Weanling rats and mice were fed on an iron-deficient diet. By the end of the 4th week, the rats were sacrificed for the determination of immune function and the mice were infected with S. typhimurium. The rate of peripheral blood lymphocytes transformation, total serum complement activity (CH50) and splenic tissue cAMP levels in the iron-deficient rats were 26.3? 5.86%, 58.39?14.79u/ml and 0.93?0.48 pmol/mg respectively, but that in the controls were 38.3?4.61%, 75.17?19.51u/ml and 2.69?1.17pmol/mg respectively. The former were significantly lower than the latter. The serum hemolysin (HC50) and serum lysozyme in the iron-deficient rats were 330.62 ?21.90 and 29.50 ?16.85ug/ml respectively; and that in the controls were 353.24?29.77 and 30.08?10.39ug/ml respectively. The differences between these two groups were not significant. Gross histological changes were found in the spleen of the iron-deficient rats, but no changes in the thymus. After the intraperitoneal injection of S. typhimurium, the mortality of iron-deficient mice were significantly higher than the controls.

Objective To investigate the specific humoral immunity and the therapeutic effect of nasal tolerance with a dual analogue (Lys262-Ala207) in the patients with myasthenia gravis (MG). Methods The levels of serum anti-AChR IgG and anti-AChR IgG isotype were determined with ABC-ELISA in 39 MG patients before and after treatment with Lys262-Ala207 and also in controls. cAMP was measured at the same time. The clinical severity and prognosis of MG were evaluated with Xu′s clinical scoring system. Results There was different in total IgG content among all groups. However the IgG 2 content was lower after the treatment and that of control (P

[Objective]To evaluate the surgical results of spinal scoliosis in the elderly and to investigate the indications,surgical techniques and factors which may contribute to the outcome. [Methods]A retrospective study was held.Sixty-four patients≥65 years undergoing different kinds of operation for lumbar spinal scoliosis from Sep.2004 to Apr.2008 were recruited.The mean patient age at surgery was 69.2 years(61~75 years).[Results]There were a variety of treatment methods of degenerative scoliosis based on symptomatology and radiologic measurements of scoliosis and stenosis.Sixty-four patients were followed up for an average of 37 months.The average correction rate of scoliosis was 51.2% after operation.No case was found spinal cord injury.Clinical symptoms and functional tolerance for daily activities improved after surgery.Radiographic evaluation showed a reduction in the deformity on the frontal and sagittal planes.There were no infections,pseudoarthrosis,instrument related failures or reoperations in this series.[Conclusion]The surgical results of lumbar scoliosis in the elderly are better than to those reported for the general population.Carefully perioperative preparation is very important in the treatment of elderly patients with lumbar spinal scoliosis.

[Objective]To review the clinical data on patients suffering from multi-level lumbar spine fracture treated with TSRH-3D pedicle screw system,and to investigate the post-operative efficacy.[Method]Eighteen patients with multi-level lumbar spine fracture were treated with TSRH-3D pedicle screw system.The operations were performed 4 hours to 2 days after injury,and the follow-up period was 15-32 months(average,23 months).The X-ray and CT scan were taken preoperatively and postoperatively.[Result](1)Twelve patients injured from height falling(67%),5 from traffic accident(28%) and 1 from crush injury(5%).(2)The improvement rates of the spine motion,back pain and the lower extremity pain were 67%,94% and 78%,respectively.(3) Compared with preoperation,the height of anterior border of vertebra improved by 59.2%,lost by 5.2% on average(P

Objective To investigate the surgical effect on complex spinal canal stenosis of lumbar spine through the technical of transforaminal lumbar interbody fusion (TLIF).Methods The retrospective analysis was performed on 46 patients admitted from December 2008 to March 2012.Of all patients,spinal canal stenosis of lumbar spine associated with lumbar scoliosis were 13 cases,lumbar sondylolisthesis for 17 cases,lumbar discogenic pain for 11 cases,lumbar revision surgery for 5 cases.All were underwent the surgical procedures including correction,internal fixation with pedicle screw,then use TLIF technology to compression and fusion.JOA,VAS,Nahal evaluating standards were applied to evaluate the therapeutic effect.The intervertebral height and bone fusion were observed by X ray.Results Forty-six patients were get follow-up for 6-36 months with an average of 12 months.There was significant difference (P ＜0.05) in JOA score between preparation (11.5 ± 2.2) and postoperation (22.5 ± 3.5).VAS score was (2.68 ± 2.08) at pre-operation,lower than that in postoperation (7.25 ± 1.85).There showed the excellent bone fusion,non loss of correction angle and the height of intervertebral disc space.Conclusion The complex of lumbar stenosis is difficult to operate and with high risk.Application of the TLIF procedure combined with clinical symptom,imaging of the spinal cord to decompression,fusion and fixation can restore the spine physical curve and improve patient's symptom.

Objective To discuss the clinical characteristics,injury mechanisms,and treatment options of atlantoaxial complex fractures.Methods Twenty-three patients with atlantoaxial complex fractures were enrolled in the study,including 13 men and 10 women with age ranging from 23 to 63 years (average 42.6 years).Treatment options were determined on the basis of injury patterns of the patients,including nonoperative treatments for 11 patients and operative treatments for 12 patients.Complications and prognosis were evaluated for all patients in follow-up.Results All patients were followed up for average 32 months (range,6-58 months),which showed the recovery of atlantoaxial stability and the bony union or fusion.At postoperative six months,Japanese Orthopedics Association (JOA) score of all patients averaged 14.1 points (range,11.5-15.8 points) with the improvement rate of 82.7％.No complications like spinal cord injury,vertebral artery injury or cerebrospinal fluid leakage occurred in operative treatment group.Conclusions Mechanisms of atlantoaxial complex fractures are largely overextension/compression and lateral bending/compression.Furthermore,treatment plans should be determined in the light of fracture types.

A 28-year-old male patient presented with a 4-year history of a solitary brown mass, and a 1-year history of multiple small papules on the left chest. Skin examination showed a quasi-round brown firm mass measuring about 1.2 cm × 1.1 cm × 1.0 cm in size on the left chest, and several brown papules with diameters ranging from 3 to 5 mm on the right side of the mass; no enlarged lymph nodes were detected in the left axilla on palpation. The mass and papules were completely resected, and histopathological examination showed clustered nevus cells in the superficial dermis of the mass and small papules, and the diagnosis of intradermal nevus was considered. There was a desmoplastic nodule in the mass, nevus cells were scattered among the fibers in the nodule, and giant nevus cells were also observed; the nevus cells in the nodule were relatively larger, epithelioid or spindle-shaped with round or spindle-shaped nuclei, obvious nucleoli, and rare mitotic figures. Immunohistochemical study showed that the nevus cells in both the intradermal nevus and proliferative nodule were positive for S100; the nevus cells in the superficial dermis of the intradermal nevus were positive for Melan-A and HMB45, while the nevus cells in the proliferative nodule were negative for Melan-A and HMB45; both the intradermal nevus and proliferative nodule tissues showed a Ki-67 index of 1%, positive staining for CD34, but negative staining for P16 and P63. Finally, the patient was diagnosed with intradermal nevus associated with desmoplastic nodule.

Objecitve To investigate the relationship between the level of pregnancy-assoiated plasma protein-A(PAPP-A) and high-sensitivity C-reactive protein(hs-CRP) in patiente with acute coronary syndrome(ACS) and the role of PAPP-A in predicting the stability of atherosclerotic plaques.Methods A total of 43 patients were selected as ACS group,25 patients as stable angina(SA) and 13 persons as control.ACS group ansisted of 20 patients with unstable angina(UA) and 23 patients with acute myocardial infarction(AMI).The peripheral venous blood samples of the both control and angina groups were drawn on the morning of the following day after hospitalization, and of the AMI group were drawn 24 hours after episode.The concentration of PAPP-A was detected by enzyme-linked immune sorbent assay(ELISA),and the concentration of C-reactive protein(CRP) was detected by scatter turbidimetry method.The concentration of PAPP-A and CRP in each group was compared.Results The plasma hs-CRP and PAPP-A levels in patients with AS increased significantly compared with those in UA and healthy volunteers; PAPP-A was significantly related with hs-CRP(r=0.308);using the method of multiple regression and correlation PAPP-A had linear relationship with hsCRP in all of the cases.Conclusion PAPP-A can play a role in evaluating the clinical stability of patients with coronary disease,and may serve as one of the biomarkers of vulnerable plaques.

Objective To investigate the genetic polymorphisms of 27 Y-chromosomal short tandem repeats (Y-STR) loci included in Yfiler(R) Plus kit in Han population of Chaoshan area,and explore the population genetic relationships and evaluate its application value on forensic medicine.Methods By detecting 795 unrelated Chaoshan Han males with Yfiler(R) Plus kit,haplotype frequencies and population genetics parameters of the 27 Y-STR loci were statistically analyzed and compared with available data of other populations from different races and regions for analyzing the genetic distance and clustering relation of Chaoshan Han population.Results Seven hundred and eighty-seven different haplotypes were observed in 795 unrelated male individuals,of which 779 haplotypes were unique,and 8 haplotypes occurred twice.The haplotype diversity (HD) was 0.999975 with discriminative capacity (DC) of 98.99％.The gene diversity (GD) at the 27 Y-STR loci ranged from 0.3637(DYS391) to 0.9559(DYS385a/b).Comparing with Asian reference populations,the genetic distance (Rst) between Chaoshan Han and Guangdong Han was the smallest (0.0036),while it was relatively larger between Chaoshan Han and Gansu Tibetan population (0.0935).The multi-dimensional scaling (MDS) plot based on Rst values was similar to the results of clustering analysis.Conclusion Multiplex detection of the 27 Y-STR loci reveals a highly polymorphic genetic distribution in Chaoshan Han population,which demonstrates the important significance of Yfiler(R) Plus kit for establishing a Y-STR database,studying population genetics,and for good practice in forensic medicine.