AIM: To evaluate the accuracy of central conreal thickness ( CCT ) using EX500 Excimer Laser workstation (EX500) in laser in situ keratomileusis (LASIK) patients.METHODS:The CCT of 120 eyes (63 patients) who had LASIK between January 2013 and June 2013 were measured by A- scan and EX500. Three groups were classified: >550μm, 500 ~550μm, <500μm according the CCT value of A-scan. The CCT were measured again by corneal flap creating by moria SBK microkeratome. The thickness of the corneal bed stroma were measured by A-scan and EX500 after keratomileusis. All outcomes were analyzed with paired t test.
RESULTS: The average preoperative CCT value was 527. 9±34. 3μm measured by A-scan, 528. 5±34. 6μm measured by EX500. There was no significant difference between these two measurements (t=1. 736, P=0. 085). In group which CCT >550μm, the average preoperative CCT value was 571. 4±17. 3μm measured by A-scan, 572.7±15. 7μm measured by EX500. There was no significant difference between these two measurements (t=1. 857, P=0. 072). In group which CCT 500 ~ 550μm, the average preoperative CCT value was 523. 4±13. 1μm measured by A-scan, 524. 2±12. 4μm measured by EX500. There was no significant difference between these two measurements ( t=1. 934, P = 0. 058 ). In group which CCT <500μm, the average preoperative CCT value 484. 5±9.8μm measured by A-scan, 483. 7±8. 9μm measured by EX500. There was no significant difference between these two measurements (t=1. 395, P=0. 174). The average CCT value after corneal flap lifting was 401. 3 ± 34. 2μm measured by A-scan, 393. 4±38. 9μm measured by EX500. There was a significant difference between these two measurements ( t = 6. 669, P = 0. 000 ). The average thickness of the corneal bed stroma value after keratomileusis was 332. 6±38. 3μm measured by A-scan, 307. 3 ± 37. 1μm measured by EX500. There was a significant difference between these two measurements ( t=17. 165, P=0. 000).
CONCLUSION: There is no significant difference between preoperative CCT value measured by A-scan and EX500. After corneal flap lifting and keratomileusis, the CCT value measured by EX500 is smaller than measured by A-scan.

Objective To investigate the effect of arsenic exposure on learning and memory ability of rats.Methods Fourty- eight weaned SD rats were randomly divided into four groups,12 in each.The control group drank tap water,the other three groups treated with sodium arsenite at doses of 2.72 mg/L,13.6 mg/L and 68 mg/L for 12 weeks.Morris water maze was used to test the spatial learning and memory ability of rats.Arsenic level in the blood and brain was assessed after Morris water maze test.Results Arsenic contents in the blood of arsenic exposed rats were significantly higher than that in control rats(P

AIM: To evaluate the changes of corneal high - order aberration (including Coma, Spab, RMSh) after laser in situ keratomileusis (LASIK) with femtosecond laser, sub- Bowman keratomileusis ( SBK ) and laser epithelial keratomileusis (LASEK). METHODS: Of 82 myopic patients ( 164 eyes ), 31 patients (62 eyes) were treated by FS-LASIK, 31 patients (62 eyes) were treated by SBK, 20 patients (40 eyes) were treated by LASEK. Sirius system was used for measuring the coma aberration, spherical aberration, and high order aberration at 1, 15d,1, 3mo after surgery. RESULTS: 1) Vision: The uncorrected visual acuity of the three groups had no differences (P>0. 05). 2) Corneal aberrations: Three kinds of surgical procedure for patients with corneal aberration had significant impact. The C7, C8, C12 and RMSh of three groups were increased significantly (P<0. 05). The C7, C8, C12 and RMSh were not recovered to preoperative levels after 3mo. But the increase of patients after FS- LASIK was smaller than the other two groups, with statistical significance (P<0. 05). CONCLUSION: Compared with SBK and LASEK, FS - LASIK has better visual acuity in the early postoperative and corneal higher-order aberrations increase is relatively small.

Objective: To investigate the efficacy of alternative donor (AD) in the treatment of aplastic anemia (AA) in children. Methods: The clinical data of AA children who received AD HSCT in our center from Apr. 2010 to Dec. 2016 were retrospectively analyzed. The overall survival (OS) rate, implant success rate, incidence of acute and chronic graft-versus-host disease (GVHD) were statistically analyzed. Results: A total of 109 children with acquired AA, including 64 severe AA (SAA) , 32 very severe AA (VSAA) and 13 transfusion dependent non-severe AA (NSAA) , were recruited in this retrospective AD HSCT study, the median age was 6 (0.8-18) years old. Of them, 44 patients with 10/10 matched unrelated donor (MUD) , 44 patients with mismatched unrelated donor (MMUD) and 21 patients with mismatched related donor (MMRD) . All patients did not receive ATG before HSCT and the active infection was excluded. Except 3 patients suffered from a second graft failure (2 of them rescued by second HSCT) , 106/109 (97.2%) were engrafted with neutrophil and platelet recovery occurring at a median of 13 days (range, 9-19) and 16 days (range, 10-81) post-transplant. Until day 100 post transplantation, the incidence was 74.3% (81/109) for acute GVHD (aGVHD) and 39.4% (43/109) for grade Ⅱ-Ⅳ aGVHD, 30.7% (31/101) and 9.9% (10/101) for overall chronic GVHD (cGVHD) and moderate cGVHD, respectively, and nobody developed an extend cGVHD. After median follow up of 39 (0.7-103) months for all patients, 13 of 109 patients died. The estimated 5-year overall survival (OS) of the entire cohort was 88.1% (95%CI 81.1%-91.4%) with no difference among the MUD, MMUD and MMRD cohort (93.2%, 84.1% and 85.7%, respectively, P=0.361) . Conclusion: These excellent outcomes suggest that unmanipulated AD PBSC is a good HSCT source for children with SAA. It's reasonable to consider AD HSCT as first line therapy for SAA children without matched sibling donor. Better strategies are required to prevent GVHD.
Adolescent ; Anemia, Aplastic ; Child ; Child, Preschool ; Graft vs Host Disease ; Hematopoietic Stem Cell Transplantation ; Humans ; Infant ; Retrospective Studies ; Tissue Donors ; Treatment Outcome

As an important part of traditional Chinese medicine (TCM), mineral medicine plays an irreplaceable role. However, little has been reported on its species and valence state of heavy metals and deleterious elements, and also the relevance to pharmacological effect and toxicology. The present paper, in a new perspective, summarized the determination of the species and valence state of heavy metals and deleterious elements in recent years, discussed the progress of the pharmacological effect and toxicology, and prospected for future study which might provide reference for mineral medicine.
Animals ; Drug Contamination ; statistics & numerical data ; Drug Therapy ; Humans ; Medicine, Chinese Traditional ; Metals, Heavy ; analysis ; toxicity ; Minerals ; analysis ; pharmacology

Objective To observe the effect of Kechuanning Oral liquid on the expression of P13K in CD4+and CD8+T cells of asthma rats induced by respiratory syncytial virus (RSV), and explore its mechanism of preventing and treating asthma induced by virus. Methods SD rats were randomly divided into phosphate-buffered saline (PBS) control group, model group, dexamethasone and salbutamol group (positive drug group), and Kechuanning oral liquid group. Ovalbumin asthma rats model was built and induced by RSV. CD4+and CD8+T cells were separated by magnetic beads method. The expressive level of PI3K-110αin T cells was detected by immumofluorescence method with flow cytometry. Results Compared with PBS control group, positive drug group and Kechuanning oral liquid group, the CD4+and CD8+T cells percentage and the expression level of PI3K-110α in CD4+ and CD8+T cells of model group were significantly higher. The differences were statistically significant (P<0.01). The CD4+and CD8+T cells percentage was not associated with the expression level of PI3K-110α in CD4+ and CD8+T cells of each group by Pearson correlation analysis. Conclusion The CD4+ and CD8+T cells involve in the asthma immunity balanced modulation, and the level of PI3K expressed by CD4+ and CD8+T cells increase distinctly. Kechuanning oral liquid can restrain the expression of PI3K in CD4+ and CD8+T cells, which might be one of the immunologic mechanisms of treating asthma.

OBJECTIVETo probe the function of interleukin-17 (IL-17) in rheumatoid arthritis (RA) patients of accumulated dampness-heat obstruction in joints syndrome (ADOJS) by detecting levels of IL-17 in serum and the synovial fluid and analyzing its correlation with erythrocyte sedimentation rate (ESR) and C reactive protein (CRP).

METHODSFrom January 2011 to January 2013, recruited were 90 RA inpatients of ADOJS at Department of Integrative Medical Rheumatism, General Hospital of Chengdu Military Region, of which 28 patients had knee joint effusion. Besides, 30 healthy volunteers who received physical examination at our hospital were recruited as the normal control group, and 30 patients with osteoarthritis (OA) who had knee joint effusion were recruited as the synovial fluid control group. The expression levels of IL-17 in serum and the synovial fluid were detected by enzyme linked immunosorbent assay (ELISA), and contents of ESR and CRP were detected in RA patients. Then correlation analyses were performed between levels of IL-17 and contents of ESR and CRP.

RESULTSCompared with the normal serum control group, the expression levels of IL-17 in serum of RA patients significantly increased (P < 0.05). Compared with the serum of RA patients and the synovial fluid of OA patients, the expression levels of IL-17 in the synovial fluid of RA patients significantly increased (P < 0.05). The expression levels of IL-17 in serum of RA patients were not correlated with ESR or CRP (r = 0.092, -0.082; P > 0.05), and the expressional levels of IL-17 in the synovial fluid of RA patients were not correlated with ESR or CRP (r = 0.113, -0.034; P > 0.05).

CONCLUSIONSIL-17 was the main effector cytokine of Th17 cells. The expressional levels of IL-17 significantly increased in serum and the synovial fluid of RA patients of ADOJS, but with no correlation to ESR or CRP. It indicated that IL-17 participated in the occurrence and development of RA. Concrete mechanisms needed to be further proved in larger samples.

Aged ; Arthritis, Rheumatoid ; blood ; diagnosis ; metabolism ; Blood Sedimentation ; C-Reactive Protein ; metabolism ; Case-Control Studies ; Female ; Humans ; Interleukin-17 ; blood ; metabolism ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Synovial Fluid ; metabolism

OBJECTIVETo study the effect of bitter-cold herbs easing dampness method (BCHEDM) plus Sanhuang Yilong Decoction (SYD) combined with methotrexate (MTX) on expression levels of interleukin-1 (IL-1), IL-6, and IL-17 in rheumatoid arthritis (RA) patients of accumulated dampness-heat syndrome (ADHS).

METHODSFrom January 2011 to January 2013 recruited were 90 RA inpatients of ADHS at Department of Integrative Medicine on Rheumatoid Disease, General Hospital of Chengdu Military Region. They were assigned to the treatment group (45 cases) and the control group (45 cases) according to the random digit table produced by SPSS 11.5 Software. Patients in the treatment group were treated by heavy bitter-cold herbs plus SYD combined with MTX, while those in the control group were treated by MTX alone. Expressional levels of IL-1, IL-6, and IL-17 in serum were detected by enzyme linked immunosorbent assay (ELISA) before treatment, at week 2 and 4 after treatment. Erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), and disease activity score in 28 joints (DAS28) were detected as well.

RESULTSAfter two or four weeks of treatment, ESR, CRP, and DAS28 decreased more in the treatment group than in the control group with statistical difference (P < 0.05, P < 0.01). After four weeks of treatment, IL-1, IL-6, IL-17, ESR, CRP, and DAS28 in the treatment group were all lower than before treatment and those of the control group at corresponding time points with statistical difference (P < 0.01).

CONCLUSIONSYD combined MTX could play roles of improving inflammatory indices within 2 weeks, and inhibiting the expression of IL-1, IL-6, and IL-17 within 4 weeks.

Arthritis, Rheumatoid ; blood ; drug therapy ; immunology ; Blood Sedimentation ; C-Reactive Protein ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Hot Temperature ; Humans ; Interleukin-1 ; blood ; Interleukin-17 ; blood ; Interleukin-6 ; blood ; Methotrexate ; therapeutic use ; Syndrome ; Treatment Outcome

OBJECTIVETo compare brain lead accumulation and neurotoxicity induced by lead under drinking purified water and tap water on rat.

METHODSAll 104 male weaning SD rats were randomly divided into eight groups, matched-four pairs according to drinking water: tap water, purified water, tap water with lead 50 mg/L(lead acetate water-solution), purified water with lead 50 mg/L, tap water with lead 200 mg/L, purified water with lead 200 mg/L, tap water with lead 800 mg/L. All were fed with normal food and environmental cognitions kept consistent Morris water maze(including Place Navigation, Spatial Probe Test, Visible Platform Trial) was measured to test rat spatial learning at the 12 and 24 week. At the end of the experiment (28 week), rats were killed and the lead of brain and blood was measured by Graphite furnace atomic absorption spectrometric method; the NR1, NR2A, NR2B of NMDAR (N-methyl-D-aspartame receptor) in hippocampus were analyzed by RT-PCR.

RESULTSUnder the same lead exposure, no significant differences were observed in blood lead, however, brain lead level showed higher in drinking purified water group than that in tap water group. Expression of NR1, NR2A and NR2B in hippocampus of the rats drinking purified water was lower than those drinking tap water, especially at low lead exposure (50 mg/L) (P < 0.05). In the 24 week Morris water maze, place navigation test's escape latency showed significantly prolonged at the rats drinking purified water as compared with those drinking tap water on the pairs of 50 mg/L and 200 mg/L pb2+ groups (P < 0.05), and the differences occurred in early 1-2 days.

CONCLUSIONCompared with drinking tap water, drinking purified water might increase the accumulation of brain lead, lower NR1, NR2A, NR2B expression and delay the spatial learning and memory ability under chronic lead exposure in water.

Animals ; Drinking ; Intelligence ; drug effects ; Lead ; toxicity ; Male ; Maze Learning ; drug effects ; Memory ; drug effects ; N-Methylaspartate ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate ; drug effects

Objective To assess the value of continuous blood purification(caP)for treatment of pediatric cerebral disease complicated by hypernatremia. Methods Nine children with cerebral disease and concurrent hypematremia admitted in the pediatric intensive care unit received CBP therapy.The sodium concentration in the exchange fluid was adjusted according to the serum sodium concentration.The correlation between the serum sodium concentration and the disease condition of the children was analyzed,and the changes in sgrum sodium and hemodynamics after CBP were observed.Results Nine children showed significantly decreased sernm sodium after CBP therapy(P＜0.05).No significant changes in the hemodynamics wgre observed during CBP in these children(P＜0.05),whose disease condition remained stable.The serum sodium Was decreased by 14.2 mmol/L daily,and lowered at the mte of 0.75 mmol/L per hour.Of the 9 children,4 died of multiple organ dysfunction syndrome,1 gave up the treatment,and 4 recovered,with a cure rate of 44.44%. Conclusion As a safe and effective treatment modality for critical patients with hypernatremia,CBP must be carried out as early as possible especially in patients with cerebral disease complicated by hypematremia.