Auditory Cortex ; metabolism ; Humans ; Magnetic Resonance Spectroscopy

AIM:To evaluate the clinical characteristics in retinal nerve fiber layer ( RNFL) thickness of the 8~17 years old near sightedness, provide the basis for juvenile glaucoma diagnosis, to avoid missed diagnosis and misdiagnosis.
METHODS:A total of 165 eyes from 99 healthy subjects ( age range 8 ~ 17 years ) were divided into low, moderate, high myopia and normal group. Cirrus HD OCT was used to measure the RNFL thickness. Each subject was performed circular scans around the optic nerve with a circle size of 3. 46mm. Total average, mean quadrant and clock - hour RNFL thicknesses were recorded and compared between the four groups. The characteristics of the RNFL thickness of myopia were observed.
RESULTS: Compared myopia groups with normal group, the mean RNFL thickness decreased, there was statistically significant difference in high myopia group (P<0. 05). The mean RNFL thickness of superior, inferior and nasal quadrant decreased, temporal quadrant was thickened. Compared moderate and high myopia groups with normal group, superior, inferior quadrant RNFL thickness were thinning, temporal quadrant was thickening, the differences had statistical significance ( P< 0. 05 ). The RNFL measurements were statistically significant thinner in the myopia groups compared with normal group at 1:00, 5:00, 6:00 and 12:00 o'clock ( P<0.05) and thicker at 8:00, 9:00, 10:00 o'clock (P<0. 05). The RNFL measurement was statistically significant thicker in the low myopia group compared with normal group at 3:00 o'clock (P<0. 05).
CONCLUSION: Compared adolescent myopia with normal, the Avg ( mean RNFL thickness ) , S ( superior quadrant RNFL thickness ) , I ( inferior quadrant RNFL thickness), 1:00, 5:00, 6:00 and 12:00 o'clock RNFL thickness is thinner, which is decreased with the increasing SE. While the temporal ( T) quadrant, 8:00, 9:00, 10:00 o'clock RNFL thickness is thicker, which increased with the increasing SE. Analysis of RNFL thickness in the evaluation of glaucoma should always be interpreted with reference to the refractive status, so as not to cause misdiagnosis of glaucoma. The highest diagnosis efficiency position of glaucoma is infratemporal (7:00~8:00 o'clock) and superior temporal (10:00 ~11:00 o'clock), which is not thinner in juvenile myopia, if these positions become thinner, it may be the possibility of glaucoma.

Objective To verify a new revised method with low usage amount of arsenic trioxide for determining urinary iodine by As(Ⅲ)-Ce4+ catalytic spectrophotometry using ammonium persulfate digestion.Methods The standard curve linearity,sample detection limit,precision and accuracy of determining urinary iodine of this modified method were verified according to Determination Methods of Chemicals in Biological Materials.Results The linear correlative coefficients of the 0-300 μg/L range and 300-1200 μg/L range calibration curve were-0.9998--1.0000(n =6) and-0.9998--1.0000,respectively.The detection limit for iodine was 1.3 μg/L.The relative standard deviations were 1.5％ (1.1/71.3)-2.5％ (6.2/244.9) when measuring 3 urine samples with iodine concentration of 71.3-244.9 μg/L,and 0.6％(2.4/388.5)-1.7％(17.3/1018.0) when measuring 3 urine samples with iodine concentration of 388.5-1018.0 μg/L,respectively(n =6).The test results of the four urinary iodine national standard materials with iodine concentration of 73.0,206.0,556.0 and 883.0 μg,/L were all within the given value range and the average value relative deviation was 1.8％ (1.3/73.0),0.4％ (0.8/206.0),0.2％ (1.0/556.0) and-1.6％(-13.7/883.0),respectively (n =6).The average recovery was 98.8％ with a range of 93.2％ (186.3/200.0)-103.4％(51.7/50.0) when measuring 3 urine samples with iodine concentration of 64.6-144.9 μg/L and 3 urine samples with iodine concentration of 346.8-574.4 μg/L,respectively.Conclusions This new modified method greatly reduces the amount of waste containing arsenic,and can directly take urine samples with high iodine concentration to digest and determine without dilution.It is performed with good standard linear curve,better precision and high accuracy,and in line with the analysis of biological samples requirements.

OBJECTIVETo observe the changes in Aβ40, Aβ42 and ADDLs in brains of 3 month-old APPswe/PS1dE9 double transgenic mice after six-month intervention with curcumin, in order to discuss the neuroprotective effect of curcumin.

METHODAPPswe/PS1dE9dtg mice were randomly divided into the model group, the Rosiglitazone group (10 mg x kg(-1) x d(-1)) and curcumin high (400 mg x kg9-1) x d(-1)), medium (200 mg x kg(-1) x d(-1)) and low (100 mg x kg(-1) x d(-1)) dosage groups, with C57/BL6J mice of the same age and the same background in the normal control group. After 6 months, the immunohistochemical staining (IHC) and the Western blot method were used to observe the changes in positive cell of Aβ40, Aβ42 and ADDLs in hippocampal CA1 area, their distribution and protein expressions.

RESULTBoth of the immunohistochemical staining and the Western blot method showed more positive cell of Aβ40, Aβ42 and ADDLs in hippocampal CA1 area and higher protein expressions in the model group than the normal group (P < 0.01). IHC showed a lower result in the Rosiglitazone group than the model group (P < 0.05), while Western blot showed a much lower result (P < 0.01). The number of Aβ40, Aβ42 and ADDLs positive cells and the protein expressions decreased in the curcumin high group, the medium group showed a significant decrease (P < 0.01), and the low dose group also showed reductions in the protein expressions of Aβ40 and Aβ42.

CONCLUSIONThe six-month intervention with curcumin can significantly reduce the expressions of hippocampal Aβ40, Aβ42 and ADDLs in brains of APPswe/PS1dE9 double transgenic mice. Whether curcumin can impact Aβ cascade reaction by down-regulating expressions of Aβ40, Aβ42 and ADDLs and show the neuroprotective effect needs further studies.

Alzheimer Disease ; drug therapy ; genetics ; metabolism ; Amyloid beta-Peptides ; genetics ; metabolism ; Animals ; Brain ; drug effects ; metabolism ; Curcumin ; administration & dosage ; Disease Models, Animal ; Hippocampus ; drug effects ; metabolism ; Humans ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Neuroprotective Agents ; administration & dosage ; Plant Extracts ; administration & dosage

AIM: To observe the clinical efficacy and safety of vincamine sustained release capsules on non- arteritic anterior ischemic optic neuropathy ( NAION) . · METHODS: Patients who were diagnosed with monocular onset NAION in acute stage from January to September 2015 were divided into two groups. Routine treatment such as steroid pulse therapy and neurotrophic treatment were given to all the patients. Vincamine was added to the treatment group patients with 30mg twice a day for 3mo. The best corrected visual acuity ( BCVA), mean deviation ( MD) of visual field, retinal nerve fiber layer ( RNFL ) , ganglion cell complex ( GCC ) , pattern visual evoked potential ( PVEP ) and OCT results were analyzed before and after the treatment. ·RESULTS:Totally 42 eyes of 42 patients were enrolled in our study. There were 27 patients in the treatment group, aged from 33 to 79 years old, the average value was 55. 55± 11. 83 years old. The control group has 15 patients, aged from 40 to 70 years old, the average value was 55. 71 ± 10. 06 years old. There were no statistical differences between the two groups in the baseline. After 3mo of the treatment, MD value of the two groups were lower compared with the baseline, the difference was statistically significant in the treatment and control group respectively (t= 2. 342, 2. 692; P = 0. 027, 0. 041). The difference of PVEP amplitude and potential of the two groups before and after the treatment were not statistically significant. The thickness of retinal nerve fiber layer and the ganglion cell complex were all lower than the baseline, and the difference was statistically significant (P<0. 001). The treatment of the two groups were both effective, the treatment group has better treatment effect than the control group. Adverse events related to the treatment of vincamine had not been found. ·CONCLUSION:Vincamine is helpful in the treatment of non-arteritic anterior ischemic optic neuropathy.

Objective To investigate the clinical efficacy of intraoperative methylprednisolone used in combination with perioperative enteral nutrition support in improving liver synthetic function after hepatectomy and postoperative recovery.Methods In this prospective controlled trial,79 patients treated with hepatectomy at Departement of Hepatobiliary Pancreatic Surgery in Drum Tower Hospital between June 2013 and May 2014 were included and divided into control group (n =39) and steroid group (n =40) according to the order of surgery.The control group underwent hepatectomy only,while the steroid group received intraoperative methylprednisolone (500 mg) at the start of liver excision.Both of the two groups were given the same perioperative enteral nutrition support.Liver function,prealbumin (PA),and C-reactive protein (CRP) levels were measured before and on days 1,3,and 5 after the operation.Human blood albumin infusion volume,postoperative gas passing,postoperative hospital stay,and incidence of complications were recorded.Results The serum level of PA on day 3 after hepatectomy was significantly higher in the steroid group than in the control group [(101.26 ±61.17) mg/L vs.(81.84 ±43.58) mg/L,t =-1.607,P =0.049].The serum level of cholinesterase on day 1 after hepatectomy was significantly higher in the steroid group than in the control group [(5.60±1.54) kU/Lvs.(4.68±1.01) kU/L,t=-3.136,P=0.004].On day1 and day 3 after hepatectomy,the serum levels of CRP were significantly lower in the steroid group than in the control group [(41.79 ±20.86) mg/L vs.(62.08 ±38.33) mg/L,t =2.933,P=0.027;(64.14 ±32.38) mg/L vs.(102.64 ± 49.05) mg/L,t =4.127,P =0.006].The postoperative hospital stay was significantly shorter in the steroid group than in the control group [(12.62 ±5.74) d vs.(15.41 ± 10.00)d,t =1.514,P =0.002].Conclusion Intraoperative use of methylprednisolone combined with perioperative enteral nutrition support may inhibit postoperative inflammatory response,promote early recovery of liver synthetic function,and help to promote rehabilitation after hepatectomy.

Objective To analyze the correlation factors between CT imaging features of pulmonary embolism(PE)and clinical severity stratification,to explore the value of CT pulmonary angiography (CTPA)in acute PE severity stratification.Methods According to the clinical severity,48 patients with acute PE proved by CTPA were classified into two groups,including 21 critical and 27 non-critical patients. Embolism index,ratio of central pulmonary involvement,ratio of right ventricle maximum minor axis (RVMMA)to left ventricle maximum minor axis(LVMMA),namely RV:LV,dilation of main pulmonary and/or right pulmonary trunk,and dilation of bronchial arteries in both groups were analyzed comparatively. The correlation factors between CT imaging features and PE clinical severity stratification were explored.The correlation between RV:LV and embolism index of 48 patients was analyzed.Results Pulmonary embolism index(22.0%—85.0%,median 38.0%),ratio of central pulmonary involvement(42.5%),RV:LV (0.90—1.90,median 1.30),dilation of pulmonary artery(14 cases),and dilation of bronchial artery (8 cases)in critical group(21 cases)were higher than those corresponding factors(5%—48%,median 21.5%,31.25%,0.80—1.40,median 1.00,5 eases,and 3 eases)in non-critical group(27 cases) (Z=4.27,X~2=5.40,Z=2.58,X~2=11.45,X~2=4.87,P

Objective To compare the effects of vitrification with slow-freezing on the developmental ability of day 3 cleavage stage embryos.Methods Patients who had no less than 4 high quality embryos were included in this study.These embryos were cryopreserved using the methods of vitrification or slow-freezing.In the eryopreserved embryo transfer cycles,the embryos which were cryopreserved using one of the methods were chosen randomly.The developmental ability of embryos was compared between these two groups.Results A total of 80 patients were included in this study with 160 embryos.In the group of slow-freezing,73(91%)embryos were survived and achieved 15(38%)clinical pregnancies.Among these,3 were twins and the implantation rate was 25%(18/73).In the group of vitrification,71(89%)embryos were survived and achieved 19(48%)clinical pregnancies.Among these, 9 were twins and the implantation rate was 39%(28/71),which was significantly higher than the slow- freezing group(P

Objective To evaluate the clinical application and safety of CT-guided pereutaneous transthoracic biopsy in the diagnosis of mediastinal masses.Methods Thirty three cases were undertaken CT- guided percutaneous transthoraeie biopsy with automatic biopsy gun and then the sampling specimens were undergone histological examination.The accuracy of puncture,diagnostic correctness and complications were analyzed.Results The operations were performed successfully in all 33 cases(100%),the definite pathologic diagnosis were made in 28 out of 33 cases(85%)and no complications occurred.Conclusion As for midiastinal masses,CT-guided percutaneous transthoracic biopsy is a feasible,successful,efficient interventional diagnostic method with high accuracy in localization,puncture,diagnosis and few complications, which should he recommended in clinical use more widely.(J Intervent Radiol,2007,16:852-854)

Objective To investigate the drug resistance genes of extended-spectrum beta- lactamase-producing bacteria in 49 strains.Methods Extended-spectrum ?-lactamase -producing strains were detected by the disc diffusion test.The techniques of polymerase chain reaction,sequence analysis, pulsed-field gel electrophoresis were used to analyze the genotype and homology of extended-spectrum ?- lactamase-producing strains.Results The incidence of ESBL-producing strains from E.coli,K pneumoniae,K oxytoca,was 20% in 2000,and 40% in 2003.Among the 49 ESBLs producers the most common genotype was CTX-M-14( n=33).The others were CTX-M-3,CTX-M-9,CTX-M-12,CTX-M-15, CTX-M-24 and SHVSa.Both two CTX-M subtypes,CTX-M-3 and CTX-M-14,were detected in one strain. However,4 ESBL-producing strains confirmed by phenotype remained untyped.The results showed that the ESBLs producers were not closely related,except for two strains of E.coli and two strains of K.pneumoniae which were homgenic respectively.Concolusions The incidence of ESBL-producing strains increases with years.The most common genotype of ESBLs is CTX-M.There is no evidence for epidemiologic spread of ESBL-producers by pulsed-field gel electrophoresis.