AIM:To investigate the effect of tanshinone IIA on the apoptosis of human umbilical vein endothe -lial cells (HUVECs) after high glucose treatment.METHODS:The cell viability was determined by MTT assay.The cell apoptotic rate was examined by flow cytometry with Annexin V-FITC/PI double staining .The expression of Bcl-2 and Bax, and the release of mitochondrial cytochrome C ( Cyt C) were analyzed by Western blotting .RESULTS: Tanshinone IIA significantly inhibited high glucose-induced decrease in cell viability and increased the cell apoptosis .Additionally, after tanshinone IIA treatment , Bax expression and the release of mitochondrial Cyt C were significantly inhibited , while Bcl-2 expression was increased .CONCLUSION: Tanshinone IIA prevents high glucose-induced endothelial cell apoptosis via mitochondria-dependent pathway .

Objective To study the applications and outcomes of using autogeneic cartilage in hearing recon-struction surgery in patients with chronic otitis media or cholesteatoma .Methods A total of 165 patients (173 ears) in whom autogeneic cartilage was used were analyzed retrospectively .Forty -three patients (48 ears) had simple tympanic membrane perforations ,61 patients (61 ears) had cholesteatomas including 12 retraction pockets ,23 pa-tients (23 ears) had tympanoscleroses and 38 patients (41 ears) had otitis media with granulations .The cartilage grafts were used for tympanic perforation reparing in 133 patients (139 ears) ,for ossiculoplasty in 102 patients (104 ears) ,for attic reconstruction in 31 patients (31 ears) and for canal wall reconstruction of external auditory canal in 3 patients (3 ears) .The auditory outcome (0 .5 ,1 ,2 ,and 4 kHz pure tone average hearing threshold ,the average air-bone gap) and local architecture status were followed up for 1 year after surgery .Results In 133 patients (139 ears) with tympanic perforation ,the rate of successful repair of a tympanic membrame perforation in one -stage was 97 .84% with perforation repair in 136 ears and postoperative perforation in 3 ears .In 102 patients (104 ears) of os-siculoplasty ,there was no ossicular prostheses prolapse .In 31 patients (31 ears) of attic reconstruction ,no local graft shift or collapse was found .In 3 patients (3 ears) of external auditory canal repair ,no canal wall collapse occurred . In myringoplasty group (43 patients ,48 ears) ,preoperative and postoperative air -bone gap (ABG) was 23 .8 ± 3 .1 dB and 11 .6 ± 8 .7 dB ,respectively .In cholesteatoma group (61 patients ,61 ears ) ,preoperative and postoperative ABG were 39 .2 ± 24 .7 dB and 19 .0 ± 12 .1 dB ,respectively .In tympanosclerosis group (23 patients ,23 ears) ,pre-operative and postoperative ABG were 31 .2 ± 12 .4 dB and 19 .8 ± 11 .2 dB ,respectively .In otitis media with granu-lation group (38 patients ,41 ears) ,preoperative and postoperative ABG were 41 .6 ± 9 .9 dB and 15 .3 ± 13 .4 dB ,re-spectively .Conclusion Autogeneic cartilage is very valuable in hearing reconstruction surgery ,especially in compli-cated tympanic perforation ,combination with ossiculoplasty prostheses ,or reconstruction of mastoid cavity or exter-nal call wall defect .

Objective:To understand the status and association of health literacy and self-management ability of hypertensive patients in the community and to provide reference for further intervention research.Methods:From June 2019 to October 2019, a random number table method was used to randomly select multiple streets or towns/townships, and then 401 residents in the community or village aged above 18 years of age diagnosed as hypertension were selected as the subjects of this study. The general data questionnaire, high blood pressure-health literacy scale into Chinese(C-HBP-HLS) and hypertension patients self-management behavior rating scale(HPSMBRS)were used to conduct one-to-one field survey. SPSS 24.0 was used to analyze the scores of health literacy and self-management behavior of patients with hypertension. SAS 9.4 was used to analyze the canonical correlation between health literacy and self-management behavior of patients with hypertension.Results:The score of health literacy and self-management ability were (38.94±17.56) points and (129.45±16.53) points, respectively.The results of canonical correlation analysis showed that the canonical correlation coefficient between health literacy and self-management behavior reached 0.57, which was mainly reflected in the great correlation between " drug label" and " diet management" .Conclusion:Attention should be paid to the positive effect of health literacy on self-management ability, and further intervention research should take the " drug label" and " written health literacy" dimensions of health literacy as entry points to effectively improve the self-management ability of hypertension patients in the community.

Objective:To evaluate the clinical advantage and disadvantage of anatomical landmark registration(ALR) and surface registration(SR) in computer-assisted endoscopic sinus surgery(CAESS).Method:Twenty-six patients were selected for the CAESS, the preparatory times and mean target registration errors (TRE) were recorded in order to compare the difference between them two, their convenience and their value were also analyzed.Result:CAESSs were successfully used in 26 cases without complications. The average preparation time of SR was(8.5±1.9)minutes, that of ALR was(6.5±1.7)minutes. In the SR group, the TRE of naso-labial angle was(1.43±0.26)mm, that of front end of middle turbinate was(1.92±0.47)mm, that of front end of inferior turbinate was (1.82±0.49)mm, and that of back end of inferior turbinate was (2.03±0.42)mm. Them in ALR group were (1.58±0.35)mm,(2.05±0.37)mm,(1.92±0.31)mm and (2.48±0.64)mm ,respectively.24 cases (92.2%) were not affected or were slightly affected by the navigation system. The value of navigation was affirmative in 22 cases (84.6%), and its value was mainly related to TRE.Conclusion:The accuracy of surface registration was superior to that of anatomical landmark registration, but the anatomical landmark registration was more convenient and need less preparation time. The value of navigation system is its accuracy, convenience and no disturbance to surgery. The navigation system is more valuable in the complex cases than that in the general case.

BACKGROUND:In recent years,it has been shown in studies that regulation of the expression of Has1 is very important to maintain neural stem cells and regulate its differentiation during the development of embryonic nervous system.Moreover,upregulation of Hes1 expression is required for quiescent adult flbroblasts resuming proliferation.This indicates that there is a close relationship between Hes1 and some potential stem cells in adult.Therefore,the study of Hes1 expression in neural stem cells and its relationship with adult neurogenasis is put on the agenda.However,the expression of Hes1 in adult brain is still not clear.OBJECTIVE:To observe the expression of Hea1 in adult mouse brain and the cell types of Has1 positive cells.METHODS:Totally 12 adult male C57BL/6 mice were randomly evenly divided into two groups by using the random number table.For the first group,the mouse brain was removed directly and immunohistochemical staining was used to detect the expression of Has1 in the adult mouse brain.For the second group,Brdu was injected intraperitoneally to every mouse with a dosage of 200 mg/kg,once a day,for 3 days.The mouse brain was removed at 4 days and then double staining was carded out to observe and analysis the cell types of Hes1 positive cells in hippocampus.RESULTS AND CONCLUSION:Hes1 was expressed in all the observed anatomical site where neural cells exist,Brdu positive cells nearly all expressed Hea1,NeuN positive cells all expressed Has1,whereas GFAP positive cells did not express Hes1 completely.Hes1 was expressed in all neurons and neural stem cells,and glial cells did not express Hes1.

Aim To investigate the effects and possible mechanisms of kaemperol in the rats with chronic cere-bral ischemia.Methods Chronic cerebral hypoperfu-sion model was produced by permanent occlusion of bi-lateral common carotid arteries (2VO)in rats.After KAE treatment,the rats underwent Morris water maze and prehensile traction test.Neuronal morphology was observed using Nissl and HE staining.The activity of SOD and the content of MDA in brain tissue were de-termined.The DJ-1 protein expression was assayed by Western blot.Results Compared with 2VO model group,KAE significantly improved learning and memo-ry and the grasping ability.In addition,KAE signifi-cantly reduced brain tissue pathological injury induced by 2VO. Furthermore, KAE significantly increased SOD activity and enhanced antioxidant protein DJ-1 ex-pression in brain tissue.Conclusions KAE could sig-nificantly attenuate the cognitive impairment,limb bal-ance dysfunction and pathological injury in rats with chronic cerebral ischemia.The mechanism may be re-lated to improving the antioxidant system in vivo.

OBJECTIVEAtopic dermatitis affects children's behavioral, emotional and psychological development. This study aimed to investigate the quality of life in infants with atopic dermatitis.

METHODSThe quality of life in 43 children with atopic dermatitis between the age of 3-6 months was assessed by the Childhood Atopic Dermatitis Impact Scale (CADIS). The severity of atopic dermatitis was determined by the SCORing Atopic Dermatitis (SCOARD).

RESULTSThe scores of SCORAD and CADIS in children with atopic dermatitis were 56.9+/-11.1 and 38.0+/-7.9 respectively. There was a positive correlation between the CADIS and SCORAD scores (rho=0.934, P<0.05). The CADIS score was positively correlated with the area of skin lesions (rho=0.581, P<0.01), erythema (rho=0.417, P<0.01), excoriations (rho=0.579, P<0.01), edema/exanthema papulosum (rho=0.595, P<0.01), oozing/crusts (rho=0.436, P<0.01), skin dryness (rho=0.343, P<0.01), pruritus and sleeplessness (rho=0.344, P<0.05).

CONCLUSIONSAtopic dermatitis adversely affects the quality of life in children with atopic dermatitis. The worse quality of life is associated with more severe atopic dermatitis.

Objective To study the imaging manifestations and clinical significance of simple cochlear nerve canal(CNC)stenosis. Methods The HRCT findings of 14 patients(1 7 ears)with simple CNC stenosis diagnosed sensorineural hearing loss(SNHL)were retrospectively analyzed.The width of CNC and internal auditory canal was measured and compared with the normal ears,the data were statisti-cally analyzed by SPSS1 6.0.Thin-sliced MRI of internal auditory canal (axial and oblique sagittal position)was performed in 8 cases. Results HRCT displayed obvious CNC stenosis in all 14 patients(1 7 ears),2 ears with cochlear nerve canal atresia.Width of CNC and internal auditory canal was (0.5±0.3)mm and (4.6±1.0)mm,it was (2.1±0.2)mm and (5.1 ±1.3)mm in normal ears (1 1 ears),the width of CNC was of significant difference between normal ears and ears with SNHL,and there was no statistical sig-nificant difference in width of internal auditory canal.12 ears(from 1 7 ears with simple CNC stenosis)were lacking of fissure in the cribriform area,1 1 ears(normal ear)were existence of fissure in the cribriform area;cochlear nerves were not shown in 8 patients with MRI examination.Conclusion CNC stenosis can be isolated from internal auditory canal stenosis,MRI could display cochlear nerve dysplasia(CND).

Objective: To investigate the expression level of genes located in chromosome 21 in the brain tissues of Down syndrome(DS). Methods: An optimized semi-quantitative RT-PCR method was used to evaluate the expression levels of seven genes encoded in chromosome 21 in fetal cortex brain and cerebellum of DS and the control at the end of 20 weeks of gestation. B2M was used as internal reference to normalize cell loss. Results: The expression levels of 6 genes in cortex and cerebellum, including DYRK1A, SYNJ1, PCP4, C21orf5, C21orf2 and C21orf106, were comparable between DS and the control. ANA, a cell-cycle negative regulatory gene, was over-expressed dramatically in the cortex but not in the cerebellum of DS. Conclusion: Over-expression of ANA may contribute to the reduction of neuronal density in DS brain.

Objective To evaluate the capacity of atopy patch test in diagnosis of food allergy in children with atopic dermatitis (AD).Methods Egg and milk,as the most common food allergens among Chinese children,were employed in this study.Skin prick test (SPT) and atopy patch test (APT) with fresh egg and milk were carried out in 68 children with AD.Oral food challenges in an open style were performed to confirm the diagnosis of food allergy.Resuits Of these patients,58(85.3%)were sensitive to egg,40(58.8%)to milk and 34(50.0%) to both.Of 98 patients with positive challenge,47 showed late response,10 immediate reactions.and 41 mixed reactions.The sensitivity,specificity,positive predictive value (PPV),negative predictive value (NPV) and the agreement with food challenges in diagnosis of egg/milk allergy were 96.6%/67.5%.90.0%/82.1%,98.2%/84.4%,81.8%/63.9% and 95.6%/73.5%,respectively for APT alone,37.9%/30.0%,100%/89.3%,100%/80.0%,21.7%/47.2% and 47.1%/54.4%,respectively for SPT alone.APT was found to be more sensitive in diagnosis of late-phase reactions than SPT (P<0.01).No significant difference was found in the sensitivity between APT alone and the combination of APT and SPT in parallel algorithm for diagnosis of egg or milk allergy (x2=0.509,0.549,both P>0.05) or in the specificity between APT alone and that in serial algorithm( P=1.000;x2=3.514,P>0.05).Conclusions APT is superior to SPT in diagnosis of late responses to food,and the combination of SPT and APT does not facilitate the diagnosis of food or milk allergy compared with APT alone.