Bile Duct Neoplasms ; surgery ; Bile Ducts ; pathology ; surgery ; Bile Ducts, Intrahepatic ; pathology ; surgery ; Biliary Tract Diseases ; surgery ; Biliary Tract Surgical Procedures ; methods ; trends ; Cholecystectomy, Laparoscopic ; methods ; trends ; Cholelithiasis ; surgery ; Humans

Objective To search for a good method for generation of hematopoietic stem cells (HSC) by embryonic stem cells (ESC),and to investigate the potential of HSC derived from ESC to reconstruct hematopoiesis in vivo.Methods Using a three-step method to induce a mice ESC line, E14.1-into HSC.And identifying HSC by flow cytometry analysis cell markers with CD34 +/Sca-1+, then HSC (1×109L-1)from ESC differentiation were injected into severe combined immunodefieency (SCID) mice for observing teratoma formation.To validate function of HSC by colonngenic cells assay and to reconstitute the hematopoiesis in lethally irradiated mice.Results Combining to use more hematopoietic stimulating factor to availably promote the El4.1 cell into embryoid body (EBs) with abundant hematopoietic progenitors.EBs were induced after 14 day to fast differentiate for HSC with peak percentages of CD34+/Sca-1+ cells reached to (13.72±2.07)%.To harvested ceils from EBs by day 14 for second -step HSC differentiation, percent of CD34+/Sca-1+ cells rise to(24.62±2.50) % after day 16 induction.Cloning forming units (CFU) analysis showed that more Erythro -myeloid cloning generation was observed at this period.Cells obtained in the second step are subsequently plated on monolayer of mice bone marrow stromal cells, in the presence of TPO, FLt3 ligand and superoatant of mice fetal liver stromal cells, cultured for additional 15 days, followed fast expansion of CD34+/Sca-1+ to maximally (58.64±4.20 ) % with more CFU-E, CFU-GM and CFU-GEMM population.Wright-Giemsa stain showed that its had the character of hematopoietic progenitors.Cells from the third-step were injected into SCID mice, but no teratomas were recovered in 2 mices after 6 weeks.Positive selection of CD34+/Sca-1+ cells by magnetic sorting from the third - step differentiation were transplanted into 7 lethally irradiated female mice while predominant hematopoietic reconstitution were observed in 10 days after transplantation, with 71.4% successful engraftment rate.And 3 recipients showed that the cell population of the peripheral blood leukocytes,red cells, hemoglobin approached normal index at 40 days after transplant, hut followed relative'slow renew in platelet count.Survival rate of transplant group is 43.0%, compared to 100% mortality in control mice.Karyotyping assays confirmed female mice with XY.Conclusions The results showed that the three-step differentiation and the culture conditions described here good support differentiation of ESC into HSC.HSC derived from ESC were safe without teratomas formation in body, and its can reconstruct hematopoiesis.

Hepatectomy ; methods ; trends ; Humans ; Liver ; surgery

OBJECTIVE: To observe the chemical groups changing in rat kidney with regard to fatal hyperthermia by Fourier transform infrared microspectroscopy (FTIR-MSP) and to provide a new method to diagnose fatal hyperthermia. METHODS: Rats were sacrificed by hyperthermia, brainstem injury, massive hemorrhage and asphyxiation and divided into groups. The renal samples were dissected immediately after death. The data of infrared spectroscopy in glomerulus were measured by FTIR-MSP. RESULTS: The absorbances of 3290, 3070, 2850, 1540 and 1396 cm(-1) significantly increased (P < 0.05), and the ratios of Al650/A3290 and A1650/A1540 significantly decreased (P < 0.05) in group of hyperthermia. CONCLUSION FTIR-MSP can analyze the changes of chemical groups of kidney as an auxiliary diagnosis for discriminating hyperthermia with other causes of death.
Animals ; Fever/mortality* ; Fourier Analysis ; Kidney/metabolism* ; Microspectrophotometry ; Rats ; Spectroscopy, Fourier Transform Infrared/methods*

OBJECTIVETo evaluate and generalize the application of intermaxillary fixation screw in the jaw fracture.

METHODS41 cases of jaw fracture have been treated with intermaxillary fixation screw.

RESULTSBoth function and appearance have recuperated in 40 cases except 1 case has light malocclusion.

CONCLUSIONSApplication of intermaxillary fixation screw advanced the traditional therapy.

Adolescent ; Adult ; Bone Screws ; standards ; Female ; Humans ; Jaw Fractures ; surgery ; Male ; Maxillary Fractures ; surgery ; Middle Aged ; Orthopedic Fixation Devices ; standards ; Reconstructive Surgical Procedures ; instrumentation ; methods ; Treatment Outcome

AIM: To investigate the safety and effect of EX-PRESS glaucoma drainage device on open-angle glaucoma.
METHODS: A retrospective review of 40 patients ( 47 eyes ) whose eyes were diagnosed as open angle glaucoma through the best - corrected visual acuity ( BCVA ) , intraocular pressure ( IOP ) , gonioscope, examination of the ocular fundus, and visual fields et al. Fourty patients 6-73y old ( mean 39. 90±16. 50y old) with the BCVA from 0. 01 to 0. 6 and the IOP from 18mmHg to 65mmHg were treated with EX-PRESS glaucoma drainage device after achieving not well IOP over three drugs. Follow - up of these patients 1d, 3d and 1wk after treatment, IOP, slit lamp examination were retrospectively observed. The changes of the BCVA, IOP were used to evaluate the safety and effect before and after treatmeat.
RESULTS: The mean BCVA was 0. 26 ± 0. 29 pre -operatively, while it was 0. 24±0. 22 after treatment one week. The mean BCVA decreased slightly, but there was no statistic difference between pre-treatment and post-treatment (t=1. 56,P=0. 13). The mean IOP was (36. 62 ±14.01)mmHg pre-operatively, (10.04±5.77)mmHg after treatment one day , ( 9. 59±4. 93 ) mmHg after treatment three days, (9. 47±3. 06)mmHg after treatment one week. The IOP was decreased significantly in post-treatment after one day, three days, one week compared with pre-treatment (F=157. 20, P<0. 05). Except for 5 eyes of the IOP below 5mmHg, there was no ocular or systemic adverse events observed in all patients.
CONCLUSION:EX-PRESS glaucoma drainage device is an effective and safe treatment for the patients with open-angle glaucoma. The risk and complication are low intraoperatively and postoperatively.

AIM: To investigate the status of myopia in students from different kinds of schools in Shantou city, China.
METHODS: In this cross-sectional study, 2 418 students from 4 middle and high schools in Shantou were surveyed through randomized cluster sampling. Ophthalmic examination and auto-refraction were performed for all subjects.
RESULTS: Among all 2 394 students examined. The myopia rates for students from middle and high school were 48. 07% and 68. 28%. In normal middle school, students from rural area had lower rate of myopia than students from the urban area (χ2 = 13. 879, P<0. 01 ). Students from key rural high schools had lower rate of myopia than students from key urban high school (χ2 =175. 231, P<0. 01).
CONCLUSION:The prevalence of myopia in the middle school of urban area in Shantou was higher than rural area. The increasing rate of myopia in youngsters is correlated with study stress. In order to decrease the myopia rate, it is extremely important to improve study environment in students.

Abstract?AlM:To investigate the choice of different treatments for malignant glaucoma.? METHODS: ln this retrospective case series, 21 malignant glaucoma patients ( 21 eyes ) admitted in Wuhan General Hospital of Guangzhou Military Command from May 2012 to May 2013 were analyzed. Sixteen eyes ( 76%) developed malignant glaucoma after filtration surgery, 3 eyes ( 14%) after EX - PRESS glaucoma filtration device, 2 eyes ( 10%) after glaucoma filtration Ahmed valve implantation. Main Outcome of corrected visual acuity, intraocular pressure ( lOP ) , anterior chamber depth and complications were detected.?RESULTS: lOP recovered by drug control in 13 eyes, anterior chamber depth. Four eyes were treated by vitreous water- bag aspiration combined with anterior chambers reconstructing. Two eyes were treated by cataract extraction and intraocular lens implantation. Two eyes were treated by posterior capsule excision combined with anterior vitrectomy. lOP before and after treatment was 29. 81±4. 98, 12. 71±3. 77mmHg, respectively (P=0. 00). Anterior chamber depth before and after treatment was 0.41± 0. 34, 2. 13 ± 0. 54mm, respectively (P = 0. 00). Corrected visual acuity before treatment was 0. 19 ± 0. 17, after treatment was 0. 20±0. 16 (P= 0. 36). Except for vitreous hemorrhage in 1 eye, there were no ocular or systemic adverse events observed in all patients.? CONCLUSlON: lt is good to diagnose malignant glaucoma in early period, and treated it step by step. For this can reduce lOP and restore anterior chamber.

Biometry ; Clinical Protocols ; Cryoultramicrotomy ; methods ; Diagnostic Techniques and Procedures ; Frozen Sections ; utilization ; Humans ; Orthopedics ; methods

Objective To study the expressions of erythmpoietin(EPO)and its receptors(EPOR)in the injured brain tissue ofthe rats with traumatic brain injury(TBI).Methods A total of78 SD rats were randomly divided into three groups including control group(six rats),sham group(36rats) and fluid percussion injury group(36 rats).The rats were sacrificed at 6,24 hours,3,5,7 and 14days after TBI in the sham group and the fluid percussion injury group(six rats at each time point).Then,the injured brain tissues were removed for observation of the mRNA and protein expressions of EPO and EPOR by meaDiB of real-time PCR and Western blot. Results The expression of EPO was increased at 24 hours and reached the peak at day 3 after TBI.The hish expression level of EPO could maintain for two days or so.began to decrease at day 7 and recovered to normal at day 14 after Till.While the expression of EPOR reached the peak at 24 hours after TBI and maintained hish level at day14. Conclusions The expressions of EPO and EPOR show increase within 24 hours after TBI.In fact,the expressions of both factors are not in consistency,with more transient expression of EPO.