Objective To assess the value of low dose CT scanning applied in nasal sinus examination. Methods 100 cases were divided into two groups,including youth group and adult group,with 50 cases for each group.After scanned by standard dose(150mAs),all the patients were scanned with low dose. Those in youth group were scanned with 40mAs and 25mAs,and the others in adult group were scanned with 50mAs and 30mAs.CT images were evaluated by three doctors using blind method.The image quality was evaluated according to 3 grades:normal image,image with mild artifact,and image with serious artifact and the results were analyzed statistically. Results The CTDlw of low-dose CT scanning was obviously lower than that of standard dose(P

AIM: To develop a method to detemine pinostrobin in Weitengning Talets (Lindera reflexae Hemsl.) by HPLC. METHODS:A C_(18) column was used,methyl alcohol-water(80∶20) was used as a mobile phase and the wavelength of UV detector was set at 290 nm. RESULTS:The linearity of this method was good with the average recovery of 97.9%,RSD was 0.74%(n=5). CONCLUSION:The methed is simple,reliable,sensitivity,and with good reproducibility.It can be used in quality control of Weitengning Tablets.

Objective:To examine the adiponectin level in gingival crevicular fluid(GCF)in patients of chronic periodontitis with dia-betes mellitus type 2.Methods:20 patients of diabetes mellitus type 2 with chronic periodontitis(DM&CP),20 of periodontitis(CP) and 20 health subjects(H)were included.The periodontal indexes (SBI,PLI,PD and AL)were measured,GCF samples were quan-tified by periotron 8000,the adiponectin content in GCF was tested by adiponectin ELISA kit.The relationship between the adiponectin level in GCF and the periodontal indexes of the DM&CP patients was analyzed statistically.Results:The adiponectin level in GCF in group DM&CP was significantly lower than that in the other 2 groups(P <0.05).The adiponectin levels in GCF in group CP and H were not statistically different.The adiponectin level in GCF was negatively correlated with PD and AL(P <0.05),but had no correlation with SBI and PLI(P >0.05).Conclusion:Decrease of adiponectin in GCF may play a role in the development of DM&CP.

AIM:To study the effects and mechanisms of ethanol on chloride channels in poorly differentiated nasopharyngeal carcinoma CNE-2Z cells.METHODS:The effect of ethanol on the cell growth was analyzed by MTT as-say.The technique of whole-cell patch-clamp was used to detect the chloride current .The characteristics of the chloride current were analyzed by using the chloride channel blockers .The siRNA technique was used to analyze the molecular basis of the ethanol-sensitive chloride channels .RESULTS: Under isotonic conditions , the background current was weak and stable.Ethanol at concentrations of 0.17~170 mmol/L activated a chloride current in a concentration-dependent manner (an inverted U-shape), with a maximum effect at the concentration of 17 mmol/L.The currents showed obviously outward rectification and were susceptible to extracellular hypertonicity and the chloride channel blocker , 5-nitro-2-(3-phenylpropyl-amino) benzoic acid ( NPPB) .ClC-3 siRNA obviously decreased the currents activated by ethanol .CONCLUSION:Ex-tracellular ethanol induces chloride currents through activating the ClC-3 chloride channels .

Objective: To investigate the changes of B cell-activating factor (BAFF) and a proliferation- inducing ligand (APRIL) in serum of children with Henöch- Schönlein purpura nephritis (HSPN), and to explore their role in the pathogenesis of children HSPN. Methods: A total of 28 children with HSPN who were before treatment were selected in Department of Pediatrics Nephrology and Rheumatology, Shengjing Hospital of China Medical University from November 2017 to August 2018.Sixteen children with Henöch-Schönlein purpura were selected as HSP group, and 20 healthy children were selected as healthy control group.Followed the HSPN guideline to cure the patients for 6-8 weeks.The clinical data were collected.Serum levels of BAFF and APRIL were measured by adopting enzyme-linked immunosorbent assay (ELISA). Results: (1)Changes of serum BAFF level: the serum levels of BAFF in HSPN children were significantly lower than those in the HSP group and the healthy control group[ HSPN group (0.652±0.360) μg/L, HSP group (1.276±0.459) μg/L, healthy control group (1.285±0.299) μg/L, F=17.519, P=0.000]. Moreover, the serum levels of BAFF in before treatment were significantly lower than those in after treatment [before treatment (0.652±0.360) μg/L, after treatment (0.860±0.262) μg/L, P<0.05). However, there were no significant di-fferences in the serum levels of BAFF between HSP group and healthy control group (P>0.05). (2)Changes of serum APRIL level: the serum levels of APRIL in HSPN and HSP children were both significantly higher than those in healthy control group, but there were no marked differences between the 2 groups [HSPN group (2.285±1.015) μg/L, HSP group (2.609±1.264) μg/L, healthy control group (1.677±0.118) μg/L, F=3.647, P=0.016]. There were no significant differences in the serum levels of APRIL between before treatment and after treatment [ before treatment (2.285±1.015) μg/L, after treatment (2.042±0.695) μg/L, P>0.05]. (3)Pearson correlation analysis results showed that the serum levels of BAFF were negatively correlated with 24 h urinary protein, urinary microalbumin, and urine red blood cell count (r=-0.587, -0.608, -0.515, all P<0.05). The serum levels of APRIL were positively correlated with serum IgA(r=0.588, P<0.05). Conclusions The level of serum BAFF decreased and APRIL increased in children with HSPN, which was related to the degree of renal involvement.It suggests that BAFF and APRIL may be related to the pathogenesis of HSPN in children.

Objective Ischemic stroke with elevated serum immunoglobulin E ( IgE) in some young patients is regarded as cerebral vasculitis clinically though without sufficient pathological evidence .This study was to investigate the characteristics of vascular lesions in these patients by temporal artery biopsy . Methods We performed histopathologic examinations on the temporal arteries of 32 young ischemic stroke patients with unknown etiology , 16 with normal and the other 16 with elevated serum IgE .We observed inflammatory cells infiltration and mast cells by HE staining and toluidine blue stai-ning respectively and determined the expressions of matrix metalloproteinase -9 (MMP-9), monocyte chemotaxis protein -1 (MCP-1) and serum IgE by immunohistochemistry . Results Compared with the patients with normal IgE , those of the elevated IgE group showed a significantly higher rate of inflammatory cells infiltration (12.5%vs 62.5%, P<0.01), with 1 case of focal necrosis and fi-brinous exudation in the adventitia in the latter group .The average optical density ( OD) of monocyte chemotaxis protein-1 ( MCP-1) in the temporal artery was also dramatically higher in the elevated IgE group than in the normal controls ([9.25 ±5.79] ×10 -5 vs [4.41 ±2.87] ×10 -5, P<0.01).The average OD of matrix metalloproteinase 9 (MMP-9) and intima-media thickness were both increased in the elevated IgE group ([32.79 ±21.38] ×10 -4 and [0.25 ±0.06] mm) but showed no statistically significant differ-ence from those in the normal IgE group ([25.23 ±12.78] ×10 -4 and [0.22 ±0.06] mm) (both P>0.05).Nor was any signifi-cant difference observed in the number of the mast cells between the normal and elevated IgE groups (2.8 ±1.5 vs 3.6 ±2.3, P>0.05). Conclusion The infiltration and necrosis of inflammatory cells and fibrin exudation in the temporal artery of the young pa-tient with elevated serum IgE are likely to be the manifestations of vasculitis , and MCP-1 may play a role in the pathogenesis of the disease.

Background: Although the prognostic impact of body mass index (BMI) in patients with non?metastatic naso?pharyngeal carcinoma (NPC) had been extensively studied, its effect among metastatic NPC patients remains unknown. The purpose of this study was to evaluate the prognostic effect of BMI in patients with metastatic NPC. Methods: We retrospectively studied 819 patients who were diagnosed with distant metastasis from NPC and received treatment between 1998 and 2007. The patients were divided into three subgroups according to the World Health Organization classifications for Asian populations: underweight (BMI <18.5 kg/m2), normal weight (BMI 18.5–22.9 kg/m2), and overweight/obese (BMI ≥23.0 kg/m2). The associations of BMI with overall survival (OS) andprogression?free survival (PFS) were determined by Cox regression analysis. Results: Of the 819 patients, 168 (20.5%) were underweight, 431 (52.6%) were normal weight, and 220 (26.9%) were overweight/obese. Multivariate analysis adjusted for covariates showed that overweight/obese patients had a longer OS than underweight patients [hazard ratio (HR), 0.64; 95% confidence interval (CI), 0.49–0.84] and normal weight patients (HR, 0.72; 95% CI, 0.57–0.90); no significant difference in PFS was observed among these three groups (P = 0.407). Moreover, in stratified analysis, no statistically significant differences in the effect of overweight/obesestatus among different subgroups were observed. Conclusion: For patients with metastatic NPC, overweight/obese status was associated with longer OS but not longer PFS compared with underweight or normal weight status.

OBJECTIVETo analyze the imaging manifestations of third molar (M3) in aged 11, and to explore the relationship of development between M3 and second molar (M2), canine (C).

METHODSA total of 399 cases, aged 11, of West China School of Stomatology in June-August 2010 were selected as the imaging database. The M3, M2, C on the panoramic images were observed and the development degree in 399 was divided. And then the correlation analysis was done.

RESULTS45.5% of M3 in aged 11 was in stage C. 30.8% of M2 was in stage F. 36.1% of C was in stage G. The development of M3 appeared earlier in girls than in boys, and earlier in the mandible than in the maxillary. There was no significant difference between the left and right side. The correlation coefficient between M3 and M2 was 0.437, and the correlation coefficient between M3 and C was 0.132.

CONCLUSIONThe general trends of the developments of M3 and M2, C were the same. The development of M3 can be used to describe the development of M2 and C, according to the close relationship in radiograph.

Objective To explore the effect of corilagin on proliferation of glioma U251 cells and glioma stem cells and IκB-α and nuclear factor (NF)-κB P65 protein expressions in these cells.Methods The glioma stem cells were isolated from glioma U251 cells by using immune magnetic beads.The cells were intervened by different corilagin concentrations (0,25,50 and 100 μg/mL) for 48 h,respectively.Cell morphology changes were observed by microscope;cell counting kit (CCK)-8 assay was used to detect the cell proliferation;dual-luciferase reporter assay was employed to detect the P65 gene promoter expression;Western blotting was used to investigate the protein expressions of Iκ B-α in cytoplasm and NF-κB P65 in nucleus.Results (1) Cell morphology observation results showed that the cells became shrunken,cell density was decreased,and cell structure was destroyed with a great deal of cell debris.(2) CCK-8 assay results showed that as compared with those in the 0 μg/mL corilagin group,the survival rates ofU251 glioma cells and glioma stem cells were significantly decreased in the 25,50 and 100 μg/mL corilagin groups (P＜0.05);while in the presence of the same corilagin concentration,the survival rate of U251 glioma cells was significantly higher than that of glioma stem cells (P＜0.05).(3) Dual-luciferase reporter assay results showed that as compared with the 0μg/mL group,the P65 gene promoter expressions of U251 glioma cells and glioma stem cells in the 25 μg/mL corilagin group were significantly increased (P＜0.05),but with increasing concentrations of corilagin,the expressions were gradually decreased.(4) Western blotting results showed that the IκB-α expressions in cytoplasm of U251 cells and U251 stem cells were significantly increased,but the NF-κB P65 expression in nucleus of U251 cells and U251 stem cells was significantly decreased with increasing concentrations of corilagin (0,25,50 and 100 μg/mL),with signficant differences between each two groups (P＜0.05).Conclusion Corilagin could inhibit the expression of P65 gene promoter,promote the IκB-α protein expression in cytoplasm,reduce NF-κB P65 protein into the nucleus,thereby to inhibit the NF-κB signaling pathway,and it is likely to be one of the important mechanisms to inhibit the proliferation of glioma cells and glioma stem cells.

Objective To explore the efficacy of the retrosigmoid sinus approach through the cerebellopontine angle in the treatment of pontine hemorrhage.Methods A retrospective analysis was performed on 108 patients with pontine hemorrhage in Kaifeng Central Hospital from January 2016 to June 2022.They were divided into two groups according to the treatment methods,the conservative treatment group and the craniotomy treatment group(transcerebellopontine angle sigmoid sinus posterior approach).There were 94 cases in the conservative treatment group and 14 cases in the surgical treatment group.First analysis was conducted to examined whether there are differences in gender,age,Glasgow Coma Score(GCS)on admission,bleeding volume,comorbidities and complications between the two groups.Additional analysis was performed to analyze modified Rankin(modified Rankin scale,mRS)score and mortality rate after three month follow-up in case there was no significant difference at first analysis.Results There were no statistical differences in gender,age,Glasgow Coma Score(GCS)on admission,bleeding volume,comorbidities and complications between the two groups.After 3 months of follow-up,49 patients died in the conservative treatment group and 3 patients in the craniotomy treatment group.The mortality rates of the two groups were 52.1％and 21.4％respectively(χ2=4.600,P<0.05)).There was a statistical difference in the mortality rate between the two groups,and the mortality rate of the craniotomy treatment group was significantly lower than that of the conservative group.The modified Rankin score was 4(3,5)in the conservative treatment group and 3(2,3)in the craniotomy group(Z=-2.994,P<0.01).The modified Rankin score in the craniotomy group was lower than that in conservative treatment group after 3 months.Conclusion Microsurgery through the cerebellopontine angle retrosigmoid sinus approach to treat pontine hemorrhage can significantly reduce patient mortality and improve prognosis and is an effective surgical treatment method.