Child ; Hemorrhagic Fever with Renal Syndrome ; Humans

A reusable chronocoulometric adenosine triphosphate (ATP)-aptamer sensor was developed in this work.A short chain of DNA marked as cDNA containing complementary sequence was immobilized on gold electrode based on Au-S self-assembly.The ATP aptamer was hybridized with cDNA.The surface-confined DNA could bind with [Ru(NH3)63+ (RuHex) in the electrolyte via electrostatic interaction.Upon target ATP binding, the aptamer confined onto electrode surface was disassociated from the cDNA oligonucleotides into the solution.Such surface density change of DNA lead to the decrease of chronocoulometric signal for the RuHex which confined on the electrode surface.The chronocoulometric signals showed a linear relationship with logrithm of ATP concentration in the range of 1 nmol/L to 100 μmol/L, and the detection limit of this aptamer sensor could reach 0.5 nmol/L (S/N=3).This aptamer sensor could be regenerated 5 times by simple steps.With this aptamer sensor, the basal level of ATP in the brain cortex micorodialysate was determined to be 19.2±3.7 nmol/L (n=3).

AIM　To study the effects of Aβ25～35 and Apo E4 on neuronal intracellular free Ca2+(［Ca2+］i). METHODS　Hippocampal and cortical neurons suspension of newborn(0～3 days) SD rats was produced. After incubated with fura-2/AM,the neurons suspension was divided into four groups: control, Aβ25～35, Apo E4, Aβ25～35+Apo E4. Each groups ［Ca2+］i was measured using a RF-5000 dual wavelength spectrofluorometer after incubated with double distilled water, Aβ25～35, Apo E4, Aβ25～35+Apo E4 for 3 min, respectively. The neurons outocorrelation function(ACF) of the scattering light intersity was analyzed by the microscope quasi-elastic light scattering(MQLS) technique The frequency shift line width by ACF. The Γ can sympolize the cell menbrane flilidity. RESULTS　Both Aβ25～35 and Apo E4 could significantly enhance hippocampal and cortical neurons rest ［Ca2+］i, furthermore, the effect of 5 μmol*L-1 Aβ25～35 was higher than the effect of 1 μmol*L-1 Aβ25～35 (P<0.05), and they also amplified KCl-induced rise in ［Ca2+］i in hippocampal and cortical neurons(P<0.05). The interaction of Aβ25～35 and Apo E4 could also significantly enhance hippocampal and cortical neurons rest ［Ca2+］i andamplified KCl-induced rise in ［Ca2+］i in hippocampal and cortical neurons(P<0.05), but they had no synergic or additive effect.The frequency shift line widith Γ of both hippocampal and cortical neurons were decreased by both Aβ25-35 and ApoE4. CONCLUSION　Aβ25～35 and Apo E4 could enhance neuronal intracellular free Ca2+, amd decrease meirpma; ,e,brame f;iodotu. But their interaction had no synergic or additive effect. It suggested that the amplified effect of Aβ25～35 and Apo E4 on neuronal ［Ca2+］i and membane fluidity may be relative to their neurotoxity.

Objective To evaluate the prophylactic effect of abdominal breathing exercises on radiation pneumonitis in patients with chest malignant tumors.Methods 100 patients with chest malignant tumors were given radiotherapy and divided with random digit table into the exercise group and the control group with 50 patients in each group.The incidence rate of radiation pneumonitis in both groups was compared.The prophylactic effect of abdominal breathing exercises on radiation pneumonitis was evaluated.Results The incidence of radiation pneumonitis in abdominal breathing exercise group was significantly reduced [34％ (17/50) vs.56％ (28/50),Z=2.397,P＜0.05],the incidences of grade Ⅰ [22％ (11/50) vs.30％ (15/50)] and grade Ⅱ [12％ (6/50) vs.18％ (9/50)] radiation pneumonitis decreased,and no grade Ⅲ and Ⅳ radiation pneumonitis occurred.Conclusions The incidence of radiation pneumonitis in patients with chest malignant tumors treated with radiation therapy may be decreased by abdominal breathing exercises,which may be widely applied in patients treated with radiation therapy.

AIM To study the effects of A? 25～35 and Apo E4 on neuronal intracellular free Ca 2+ ([Ca 2+ ] i). METHODS Hippocampal and cortical neurons suspension of newborn(0～3 days) SD rats was produced. After incubated with fura 2/AM,the neurons suspension was divided into four groups: control, A? 25～35 , Apo E4, A? 25～35 +Apo E4. Each groups [Ca 2+ ] i was measured using a RF 5000 dual wavelength spectrofluorometer after incubated with double distilled water, A? 25～35 , Apo E4, A? 25～35 +Apo E4 for 3 min, respectively. The neurons outocorrelation function(ACF) of the scattering light intersity was analyzed by the microscope quasi elastic light scattering(MQLS) technique The frequency shift line width by ACF. The ? can sympolize the cell menbrane flilidity. RESULTS Both A? 25～35 and Apo E4 could significantly enhance hippocampal and cortical neurons rest [Ca 2+ ] i, furthermore, the effect of 5 ?mol?L -1 A? 25～35 was higher than the effect of 1 ?mol?L -1 A? 25～35 ( P

Objective To analyze the dermatology journals indexed by SCI‐E and papers published in recent 5 years ,to pro‐vide advices on periodical selection and contribution .Methods We mainly adopted the bibliometrics methods and word frequency a‐nalysis method to analyze 10 targets in 62 SCI‐E dermatology journals .Results Main publishing nationality were United States , England ,Denmark and Germany ,publishing language was English ,main publishing cycle period was bimonthly journals ,the highest impact factor was 6 .372 .The theme of published content was relatively concentrated ,reviewers′duration was fast and reasonable , 80 .7% submission of the journal was easy .Main type of literature published in recent 5 years is article ,review ,editorial and letter . 58 SCI‐E dermatology journals accept articles from China .Conclusion We suggest that the authors should firstly check the name of dermatology and cross‐disciplinary journals indexed by SCI‐E ,and evaluate the theme of published content ,rate of publishing article contributed from China ,difficulty degree for contribution ,reviewers′duration ,publishing cycle and impact factor when contribution articles .

In this paper, a new imaging method to determine the position of blood effusions or edemas in the deep position of the brain by using electric current flowing through the brain is presented. Its principle is that the existence of non-normal matters in the brain cause a disturbance to boundary potentials, while a low frenqency current flows through the brain. In terms of the measurement for the change value of boundary potentials a reconstruction for the blood effusion or the edema in the deep position of the brain can be done.

On the basis of educational psychology fundamentals and characteristics, this study constructed the experiential teaching of music therapy. The preparations made before class include the construction of experiential teaching system, improvement of multimedia resources, and the establish-ment of music therapeutic room. Music therapy activities were taken as the main body and problem-based learning as the leading factor, clinical observation as the basis, and social practice as the com-plement, etc. This study provides basis and reference for the theoretical teaching and clinical practice of music therapy in medical colleges and universities.

Objective To investigate the diagnostic value of serum tumors M2 pyruvate kinase (TuM2-PK),carcino-embryonic antigen (CEA),CA199,CA724,CA125 and CA242 in colon cancer.Methods Serum levels of TuM2-PK,CEA,CA199,CA724,CA125 and CA242 in 231 patients with colon cancer,105 patients with colon benign lesion diseases and 166 normal controls were measured by the ELISA and electrochemiluminescence assays.The operation working characteristic curve (ROC) and the logistic regression-ROC were used to evaluate the diagnostic value of tumor markers for colon cancer individually and in combination.The models of logistic regression analysis and partial least-squares discriminant analysis (PLS-DA) were established to diagnose patients with colon cancer based on the optimal panel of serum tumor markers.Resalts Concentrations of serum TuM2-PK,CEA,CA199,CA125 and CA724 in the colon cancer group are higher than those in the colon benign diseases group and the normal controls (P＜0.05).The area under the operation working characteristic curve (AUC) of CA199 is the highest 0.79 [95％ confidence interval (95％CI),0.75-0.83] at the cutoff value of 69.5 U/L with 64.1％ of sensitivity and 89.7％ of specificity.The AUC of combined serum tumor markers based on logistic regression analysis is higher than those in individuals,of which serum (CEA+ CA199+TuM2-PK) is the optimal [AUC=0.89,95％ confidence interval(95％CI),0.86-0.92].The diagnostic accuracy of logistic analysis and PLS-DA model for colon cancer is 82.7％ and 77.5％,and for colon cancer is 93.7％ and 95.6％,respectively.Conclusion The combination of serum tumor markers CEA,CA199 and TuM2-PK is more suitable as a diagnostic model for the screening of colon cancer.

Objective To explore the prognosis value of serum hydrogen sulfide (H2S) concentration and acute physiology and chronic health evaluation HI (APACHE Ⅲ) scores in critically ill patients. Methods The serum H2S levels were measured in 72 cases and 12 controls by spectrophotometry. The APACHE Ⅲ scores of the patients were assessed. The relationship between serum H2S concentration and APACHE H scores and prognosis were analyzed. Results The average serum H2S concentration of the 72 cases was (45. 6 ±17.2) μmol/L The concentration in the survival group was(41. 1 ± 14. 7) μmol/L,and which was significantly lower than in the dead group(62. 8 ±15. 5)μmol/L,(P<0. 01). The average APACHE I score was(43. 6 ±26. 0)of the 72 cases. The APACHE Ⅲ score was(37. 7 ±22. 2) in the survival group,and which was significantly lower than in the dead group (65. 0 ±29. 6) (P <0. 01). The higher of the serum H2S concentration or APACHE Ⅲ scores,the higher mortality of the patients(P <0. 01). Conclusions Serum H2S levels and APACHE Ⅲ scores of critically ill patients have a role in judging the condition and prognosis of the patients.