Objective To investigate the significance of plasma exchange (PE) treatment on children with hemolytic uremic syndrome (HUS).Methods From Jan 2008 to Dec 2010,16 patients diagnosed with HUS were included in this study,and PE was carried out on them.Frozen plasma was taken as replacement fluid,and the treatment time was 2 to 3 hours per time.Results All the 16 patients after PE treatment were survived without any apparent complications.The condition obviously alleviated after initial treatment.In 12 to 72hours,the icterus disappeared,serum creatinine [ ( 385.0 ± 189.4 ) μmol/L vs ( 100.0 ± 19.3 ) μmol/L ] and lactate dehydrogenase [ (799.3 ± 289.8 ) U/L vs (300.0 ± 100.4) U/L ] declined obviously ( P ＜ 0.05 ) and platelet count [ (45.0 ± 18.8 ) × 109/L vs ( 120.0 ± 20.0 ) × 109/L ],hemoglobin [ ( 59.3 ± 15.3 ) g/L vs ( 120.0 ± 18.3) g/L] rised( P ＜ 0.05 ).In the end,symptoms disappeared in 15 patients,laboratory examination returned to normal in 14 cases.Hospitalization time was 15 to 57 days.Conclusion PE can effectively relieve the illness and remove plasma pathogenic substances,block the pathological process of HUS and supply useful ingredients.Recommend PE as the fhst option in the treatment of HUS.

Objective: To measure and compare the color of a new and a conventional Vita shade guide(VITAPAN 3D-Master and LUMIN RVACUUM-Farbskala) in order to provide the references for clinical application.Methods: Color in the two shade guides was measured with Minolta colorimeter CR-321 under the light of D 65 and reported in CIE1976L*a*b* color system. Each tab was detected 3 times in the same dimensions at the middle facial surface. Mean values were calculated as the shade of the tab.Results: The range of color value in VITAPAN 3D-Master was larger than that in LUMIN R VACUUM-Farbaskala because the lower value tab was added. The distrbution of a* deviated to the red color , while the green color was relatively deficient. The yellow color could cover the color space of Chinese teeth, and the blue was not enough, although the distribution of b* was enlarged. The tabs of the two shade guides did not match with each other. Only a few tabs could not tell in shade by naked eyes. Conclusion: VITAPAN 3D -Master shade guide can not cover the color of Chinese teeth although it has 10 tabs added and color space enlarged.

BACKGROUND:Studies addressing reconstruction of tooth tissue engineering have shown that tooth structure can be constructed using tissue engineering technology. Tooth root and its periodontal attachment are critical for tooth survival and functions, based on which, whether we can target root tissues with simple structure for tissue engineering construction by bypassing a complex dental tissue engineering concept with the structural integrity?
OBJECTIVE:To construct a tissue-engineered dental root by seeding dental papil a cells, as seed cells, into poly(lactic-co-glycolic acid)/sodium alginate hydrogel.
METHODS:Rabbit dental papil a cells were isolated and cultured. The cells were then mixed with 1%sodium alginate hydrogel at a final density of 6×109/L. The cellsuspension was seeded into a poly(lactic-co-glycolic acid) scaffold with predetermined shape of human tooth and solidified with calcium chloride. Final y, the cel-scaffold composites were subcutaneously implanted into the back of nude mice. The specimens were harvested after 4 and 8 weeks respectively and processed for gross inspection, X-ray and CT examination and histological observation.
RESULTS AND CONCLUSION:The newly formed tissue kept the original shape of human dental root 4 and 8 weeks post-implantation. After 4 weeks of implantation, the specimen density was low;the root implants appeared to be incompletely mineralized, alginate hydrogels were degraded, but the copolymer scaffold was not degraded;a number of dentin-like structure appeared, and a fibrous membrane structure was visible on the surface of specimens paral el to the root surface, but the structure was not continuous, and no pulp cavity formed. After 8 weeks, the newly formed tissue was highly mineralized close to root tissue of the nature tooth;the copolymer scaffold was mostly degraded;specimens appeared to have a large number of mature dentin-like structure, and form continuous fibers membrane on the surface paral el to the root surface, below which, cementum-like structure formed. Artificial dental root with biological y similar structures of human dental roots can be constructed using the method of tissue engineering.

Objective To study the correlation between high resolution computed tomography manifestations and expression of transforming growth factor beta,tumor necrosis factor alpha in radiationinduced lung injury of rats,and to investigate the vslues of cytokine detection and HRCT scanning for the prediction and early diagnosis of radiation-induced lung injury.Methods Forty-eight Sprague-Dawley (SD)rats were randomly divided into eight groups,group A was normal control group.and group BH were irradiated with a single dose of 15 Gy to the lungs.HRCT scanning Wag performed before and 1 week,2,4,8,12,16,24 weeks after radiation in group A-H respectively.The expression of TGF-beta and TNF-alpha were detected with ELISA. All the rats were killed to observe pathological changes of their lungs.HRCT signs,levels of cytokine were simultaneously compared and analyzed.The t-test and Spenrman rank correlation were used for the statistics.Results Four HRCT signs were observed during the 24 weeks after radiation,including ground-glass opacity(1 case),patchy consolidation(8 cases),massive consolidation(7 cases)and fibrosis(3 cases).The average levels of TGF-beta in group B-H[(3.33±0.47),(3.20±0.65),(3.12±0.45),(3.54±0.80),(3.30±1.13),(2.49±0.67),(4.19±0.22)μg/L,respectively]were hisher than the control group[(0.45±0.14)μg/L.P＜0.05].At 24 weeks the average level increased to the highest peak[(4.19 4-0.22)μg/L,P＜0.05].At 1 week and 2,4,8,12 weeks after radiation,the average level of TNF-alpha in radiation group[(236.52±29.01),(214.91±34.53),(270.97±42.12),(208.83±86.51),(208.83±82.23)ng/L]was hisher than the control group[(31.78±0.92)ng/L,P＜0.05].The average level increased to the highest peak [(270.97±42.12)ng/L,P＜0.05]at 4 weeks.The average level at 16 and 24 weeks[(60.63±38.49),(32.07±1.05)ng/L]dropped to the level similar to the control group(P＞0.05).There were no rank correlations between HRCT manifestations and expression of TGF-beta and TNF-alpha(rs=0.5570 and 0.1013.P＞0.05).HRCT signs were correlated with pathological changes.Conciusions The monitoring of TGF-beta and TNF.alpha in the serum after irradiation can predict the development of radiation-induced lung injury.There are no rank correlations between HRCT manifestations and expression of TGF-beta and TNF-alpha.

Objective To study the effects and safety of levocarnitine and shuxuetong in treatment of the patients with chronic renal failure.Methods 94 patients with chronic renal failure were selected as research object,and they were randomly divided into group A(levocarnitine and shuxuetong group) 47 cases and group B(shuxuetong group) 47 cases.Group A were treated with levocarnitine oral solution and shuxuetong,and group B were treated with shuxuetong,then the percentage of effectiveness,incidence of adverse reactions of group A and group B and serum BUN,Scr,Hcy were analyzed.Results The percentage of effectiveness of group A was higher than that of group B,but the incidence of adverse reactions of the two groups had no difference,and the serum BUN,Scr,Hcy of group A and group B before the treatment had no differences(P＞0.05),those of group A and group B after treatment were compared there were significant differences(all P＜0.05).Conclusion The effects of levocarnitine oral solution and shuxuetong in treatment of patients with chronic renal failure were better.

Objective To study the influence of different dialysis frequence on infection and prognosis of maintenance hemedialysis patients. Methods Fifty-three maintenance hemodialysis patients with chronic kidney disease were divided into 3 groups. Groups A, B, C dialysed thrice per week (19 cases),twice per week (15 cases) and thrice per two weeks (19 cases), respectively. All the patients were dialysed for 1 year. The rate of infection, death number and death reason were recorded. Results All the cases were infected 62 times (17 times in group A, 18 times in group B and 27 times in group C). Pulmonary infection,blood vessels infection, urinary tract infection and digestive tract infection happened 35 times(56.45% ), 14 times (22.58%), 8 times (12.90%) and 5 times (8.06%) respectively. Eight cases died in three groups,and the total death rate was 15.09%, with 1 case in group A,1 case in group B and 6 cases in group C.There was significant difference in prognosis among three groups (χ2 =6.293,P <0.05). Conclusions Patients who dialysis less than twice per week have higher rate of infection and death. Dialysis program should be adjusted and dialysis frequence should be increased.

Animals ; Basilar Artery ; Brain Ischemia ; pathology ; Brain Stem ; blood supply ; Cats ; Medulla Oblongata ; blood supply

Air ; analysis ; Air Pollutants, Occupational ; analysis ; Humans ; Occupational Exposure ; Phthalic Acids ; analysis ; Spectrophotometry ; methods ; Workplace

OBJECTIVE:To improve the information system of Out-patient pharmacy intravenous admixture center (OUIVA) to improve the pharmaceutical service rendered to the transfusion patient and ensure the safety of drug use. METHODS:The defi-ciency in OUIVA information system of our hospital were analyzed,in which improvement was made with respect to ungrouped doctor’s orders,inconsistency between the total doses charged and the prescribed doses and the error of transfusion days that occurred fre-quently. The conformity rate of out-patient fluid transfusion prescriptions and the time of patients’waiting for transfusion before and after the improvement were compared and evaluated. RESULTS:Improvement was made to OUIVA information system through the optimization of transfusion process,the application of condition limit,the adding of logical operation and verification and the other measures. After improvement,the unconformity rate of out-patient prescriptions in our hospital descended from 11.24% in 2013 to 3.69% in 2014,with an obvious increase in the accuracy rate of dispensing for fluid transfusion;and the time of patients’waiting for transfusion was shortened from 30-40 min to 15-20 min,with an increase in the degree of satisfaction of transfusion patients. CONCLUSIONS:The OUIVA information system can reduce the errors of drug dispensing for fluid transfusion and improve pharmaceutical services.

The recent investigations have demonstrated that epigenetic such as DNA methylation and histone modification was closely associated with cell growth and malignant tumors, and epigenetic modification was responsible for an important cause of oncogenesis. However, for the recent years some observations have been also shown that the development of tumorigenesis was attributed to transformation expression in microRNA. The latest investigations have revealed that epigenetic was involved in modulation of microRNA expression, on the contrary some kinds of microRNAs could also control epigenetic, moreover, the reciprocal modulation between microRNA and epigenetic could regulate gene expression and induce tumorigenesis. At the same time the data likewise displayed that epigenetic adjusted microRNA expression principally in a way of DNA methylation or histone modification, nevertheless microRNA regulated epigenetic by way of methyltransferases expression, DNA methylation maintenance and histone modification. With regard to the reciprocal modulation between microRNA and epigenetic, a comprehensive and systemic review of reciprocal relationship in modulation of cell growth and oncogenesis was gived.