ObjectiveTo investigate the cause and characteristics of sports-related spinal cord injury. MethodsAll 38 sports-related spinal cord injury patients admitted in China Rehabilitation Research Center were analyzed retrospectively. Results84.2% （32/38） were male, mean of age was 23.4 (5～58). Diving was the most cause to sports-related spinal cord injury (27/38). Except 2 patients with no fracture and 1 with lumbar fracture, other patients were all with the cervical fractures, in which 57.9% were burst fractures, 18.4% were fracture and dislocations. 47.2% were complete spinal cord injury, 58.2% were incomplete. As for their professions, 10.5% were athletes, 31.6% were students. ConclusionSports-related spinal cord injury can happen in athletes and others, most of them are younger, disability of different degree remains. It is important to prevent sports-related spinal cord injury.

There is still evident gap between the humanity education of medical college in China and the foreign country's.We can find the heart of the matter and explore ways of solving the problem,by comparing the present condition of the humanity education of medical college in China and the foreign country's.

Objective: To investigate the nootropic components of Hovenia dulcis. Methods: Six saponins were isolated from Hovenia dulcis and Step-down test was used to examine the memory ability of mice. The escape latency and the times of wrong performance within 3 min were used to evaluate the memory ability of mice. To study the effects of saponins on learning and memory in mice, we divided the mice into 6 groups: youth group, aged group, aged plus piracetam(0.3 g/kg) group, aged plus saponins (0.6 g/kg) group, aged plus saponins (0.3 g/kg) group, and aged plus saponins(0.15 g/kg) group. To study the influence of saponins on impairment of memory acquirement, consolidation, and reoccurrence (induced by scopolamine, sodium nitrite and 40% ethanol, respectively), mice were also divided into the following 7 groups: control group, untreated group, Piracetam group (0.3 g/kg), compound 3 group(0.3 g/kg), compound 4 group(0.3 g/kg), compound 5 group(0.3 g/kg), and compound 6 group (0.3 g/kg). Results: The chemical structures of six saponins were elucidated as 3-O-stigmasterol-(6-O- palmitoyl)-β-D-glucopyranoside (1), β-daucosterin (2), hovenidulcioside A1 (3), hoduloside I (4), hoduloside IV (5), and saponins C2 (6). Among them, compounds 1 and 2 were isolated from this plant for the first time. Compounds 5 and 6 had enhancing effect on the learning and memory ability of natural senile mice, and they could improve the impairment of memory acquirement, consolidation and recurrence in mice induced by scopolamine, sodium nitrite and 40% ethanol, respectively. Conclusion: The aglycone of jujubogenin might be the main saponins contributing to the nootropic effect of total saponins from Hovenia dulcis.

Objective: To observe the differential expression of epithelial membrane antigen (EMA) and renal cell carcinoma marker (RCC-Ma) in early renal carcinoma and corresponding adjacent (0.5, 1.0, and 2.0 cm) tissues, so as to estimate the safe margin of laparoscopic partial nephrectomy for renal tumors. Methods: Tissue microarrys, including 44 tissues of clear cell renal cell carcinoma[A] and normal renal cortex tissues of different distances to the tumor: 0.5 cm[B], 1.0 cm[C] and 2.0 cm [D], were constructed. The expression of EMA and RCC-Ma was examined by immunohistochemical staining in the four groups. Results: Intensive membranous and (or) cytoplasmic staining of EMA and RCC-Ma was observed in the cancer and adjacent tissues. The positive rate in group A was significantly higher than those of the other three groups (A [15.91%/ 18.18%], B[84.09%/79.55%], C[86.36%/77.27%] and D[79.55%/75.00%], P<0.01). The positive rates of EMA and RCC-Ma expression were not significantly different between the group B, C, and D(P>0.05). Conclusion: Our data denote that, when laparoscopic partial nephrectomy is done for early renal carcinoma, at least 5 mm of normal parenchyma tissue beyond the pesudocapsule should be excised with the tumor.

One of the important approaches for further prolonging remission duration and eradicating minimal residual disease in acute leukemia is immunotherapy. Four kinds of immunotherapy for acute leukemia are under investigation: (1) monoclonal antibodies, among them, Mylotarg (cytotoxic antibiotic calicheamicin linked to CD33 Mab) is given for the treatment of refractory or relapsed acute myeloid leukemia and molecular relapse in acute promyelocytic leukemia with good results, Campath-1H (antiCD52 Mab) is administered in the treatment of prolymphocytic leukemia and Rituximab (anti-CD20 Mab) in B-PLL with high complete remission rates. Other Mabs under preclinical and clinical trials include anti-IL-2 receptor Mab for the treatment of acute T lymphocytic leukemia, anti-220 kD Mab-6G7 for acute leukemias, recombinant immune toxin BL22 (anti-CD22) for hairy cell leukemia and Mabs labeled with radio-isotopes for different types of acute leukemias; (2) adoptive cellular immunotherapy using cytokine-induced killer cell, alloreactive NK cells, allogeneic or autologous leukemic-specific CD8(+) cytotoxic T lymphocytes, and other immune effector cells; (3) cytokines and other immune modulators comprising IL-2, IL-12, GM-CSF, CD40L, FLT-3L and thalidomide and its derivatives; (4) leukemia vaccines of several different formulations including antigen-specific, leukemia cell-based, leukemia antigen-pulsed dendritic cell (DC) and leukemia-derived DC vaccines, the latter two formulations are more attractive. In conclusion, up to now, the most effective example of immunotherapy in acute leukemia is provided by the administration of Mabs, and the majority of other approaches in immunotherapy for acute leukemia although promising, need further studies.
Acute Disease ; Adoptive Transfer ; methods ; Antibodies, Monoclonal ; immunology ; therapeutic use ; Cancer Vaccines ; therapeutic use ; Humans ; Immunotherapy ; methods ; trends ; Leukemia ; immunology ; therapy

Prostate cancer is one of the most common malignant tumors in the male urinary system as well as the second leading cause of cancer death in men. Prostate specific antigen (PSA) screening is the main method for the early diagnosis of prostate cancer, but has a low specificity for its detection. In recent years, a variety of tumor markers with high sensitivity and specificity have been found. This review focuses on some of the more promising tumor biomarkers such as prostate cancer antigen 3, early prostate cancer antigen, prostate-specific membrane antigen, alpha-methylacyl-CoA racemase, and vascular endothelial growth factor.
Antigens, Neoplasm ; blood ; Antigens, Surface ; blood ; Biomarkers, Tumor ; blood ; Early Detection of Cancer ; GPI-Linked Proteins ; blood ; Glutamate Carboxypeptidase II ; blood ; Humans ; Male ; Neoplasm Proteins ; blood ; Prostate-Specific Antigen ; blood ; Prostatic Neoplasms ; diagnosis ; Racemases and Epimerases ; blood ; Sensitivity and Specificity ; Vascular Endothelial Growth Factor A ; blood

AIM:To evaluate the efficacy and stability by comparing acuity and diopter of small incision lenticule extraction ( SMILE) , femtosecond laser in situ keratomileusis ( FS-LASIK ) and laser in situ keratomileusis ( LASIK ) in treating myopia with a follow-up of 6mo.
METHODS: A retrospective study, 42 cases ( 84 eyes ) received SMILE, 37 cases ( 74 eyes ) received FS-LASIK and 31cases (62 eyes) undergone LASIK in our hospital during Apr. 2014 to Jun. 2014 were involved. The follow-up data of 6mo was analyzed. The preoperative spherical equivalent was -5. 91±1. 83D, -5. 89±1. 96D, -5. 88±1. 68D in SMILE, FS-LASIK and LASIK group, respectively. The differences of preoperative best corrected visual acuity ( BCVA ) , pupil diameter ( PD ) and central corneal thickness ( CCT ) had no statistically significant between three groups. The postoperative uncorrected visual acuity ( UCVA) , BCVA and diopter were comparative analyzed at 1wk, 1, 3 and 6m after surgery.
RESULTS:1) No patients lost to follow-up of 1wk and 1mo. A total of 10 eyes (5 cases), 10 eyes (5 cases) and 8 eyes (4 cases) lost to follow-up of 3m in SMILE、FS-LASIK and LASIK group, respectively, and raised to 18 eyes (9 cases), 12 eyes (6 cases) and 14 eyes (7 cases) in follow-up of 6m. 2) At 1wk follow-up, the differences of UCVA between SMILE group, FS- LASIK group vs LASIK group was statistically significant respectively ( t=4. 098, P=0. 000;t=2. 493, P=0. 004). 3) In LASIK group, the differences of UCVA between 1wk vs 3, 6m follow-up was statistically significant respectively (t=3. 410, P=0. 001;t=3. 771, P=0. 000), the differences of UCVA between 1m and 6m follow-up was statistically significant (t=2. 283, P=0. 026). 4) The differences of diopter were not statistically significant among three groups at 1wk, 1, 3 and 6mo follow-up respectively (χ2=0. 119, P=0. 942;χ2=1. 504, P=0. 471;χ2=0. 949, P=0. 622; χ2=0. 277, P=0. 871). 5) the differences of eyes with UCVA≥5. 0 was statistically significant between SMILE group vs FS-LASIK group, LASIK group at 1wk follow-up (χ2=9. 249, P=0. 002<0. 05/3;χ2=12. 906, P=0. 000<0. 05/3), there was no significant statistical difference between FS-LASIK group and LASIK group (χ2=0. 500, P=0. 604). 6) there was no significant statistical difference of eyes with SE (±0. 50D) at any time post operation among three groups (χ2=0. 809, P=0. 697;χ2=1. 176, P=0. 634;χ2=0. 871, P=0. 736;χ2=0. 683, P=0. 770).CONCLUSION: All of SMILE, FS-LASIK and LASIK are effective and stable on treating myopia according to follow-up of 6mo. However, in this study, SMILE group shows more effective than FS-LASIK and LASIK at 1wk, which could enhance postoperative UCVA more rapidly.

Objective To analyze the advantages of combined analysis of allergen skin prick test(SPT)and phadiatop/specific IgE antibody on the allergen diagnosis in asthmatic children.Methods Inhalant allergen SPT and Phadiatop test were done in 57 asthmatic children.Thirty-three cases of those asthmatic children were measured serum specific IgE antibody against dermatophagoids pteronyssinus.Results Dermatophagoids,molds and pets were the main inhalant allengens in asthmatic children.The positive rates of SPT and Pha-(diatop) in 57 asthmatic children were 86% and 79%,respectively,and the consistence rate between SPT and Phadiatop was 86%.Five cases with negative Phadiatop were confirmed to have molds allergy via SPT and molds specific IgE test.The consistence rate of dermatophagoids pteronyssinus SPT and specific IgE was 97%.Conclusion It is helped to improve the sensitivity and specificity of allergen diagnosis in asthmatic children when doctors combined analyze the results of allergen skin prick test and specific IgE test.

Objective To observe the ultrastructural changes of end-plate and gastrocnemius muscle of rats with spastic palsy after injected with botulinum toxin type A in order to provide scientific base of histomorphology for clinical use of botulinum toxin type A.Methods Wistar rats′ pyramidal tracts in experiment group were injured by electric current 2.5 mA for 30 s,twice,but 36 normal control rats were only drilled hole in skull(control group).Seventy-two rats were successful in building spastic palsy model.Botulinum toxin type A (6 U/kg) were injected into right gastrocnemius muscles of 36 spastic palsy rats (group B),and physiological saline were injected into the same muscles in 36 spastic palsy rats as control(group A).Control group were not injected.The rats of group A,group B were sacrificed on 3,7,15,30,60 and 90 days after botulinum toxin therapy,and right gastrocnemius muscles was separated for histological analysis.Results Under the electron microscope,the structure of muscle fiber in group B had changed(Z line rupture,disorder and abolition,myofilament lysis,triad tract diso-rder,vacuolar degeneration) and these changes in group B occurred earlier and were severer than those in group A.There was compensatory hypertrophy of muscle fiber at later stages in group B.During the first 15 days after botulinum toxin type A injection,there were many synaptic vesicle without pre-synaptic membranes near terminal portion of nonmedullated nerve fibers.Following this,between 15 to 30 days,there were many folds similar to postsynaptic membranes in the cellular membranes and there were many grains in it.But there was no synaptic vesicle and pre-synaptic membranes near them.Compensatory hypertrophy and atrophy of muscle fiber coexist at 90 days after injection in group B.Conclusions Injection of botulinum toxin type A maybe induce the sprout of nerve and degeneration of the partial postsynaptic where there are many grains.It also accelerates muscle atrophy,but it induces compensatory hypertrophy of muscle fiber at later stage.It implies that injection of botulinum toxin type A can improve spasm symptom of the gastrocnemius muscles and this is good for muscle fiber repairing.

AIM: To assess the prevalence of refractive errors in middle school students in Lanzhou city and explore the risk factors for myopia.METHODS: A cross-sectional survey was conducted. A questionnaire assessed the students' socioeconomic background and visual tasks followed by visual acuity assessment and a full eye examination including slit lamp examination, fundus evaluation, retinoscopy, and subjective refraction.RESULTS: Among 2 256 enumerated students aged 15-19 years, 2 037 (90.3%) students had significant refractive errors. Myopia was the leading refractive error (1 951/2 256,86.5%), astigmatism was the second most common refractive error (921/2 256, 40.8%), but amblyopia (10/2 256, 0.4%),strabismus (5/2 256, 0.2%), hyperopia (4/2 256, 0.2%) and other treatable eye disorders were uncommon. Almost 95.3% of students with significant refractive errors wore spectacles before the survey. Age, sex, visual tasks, and a parental history of myopia were risk factors for myopia.CONCLUSION: The prevalence of refractive errors and the risk factors for myopia in schoolchildren in Lanzhou city are similar to those reported in other regions of China.Interventions of myopia progression should be performed to protect the visual acuity of school-aged students.