[ABSTRACT]OBJECTIVETo investigate the clinic significance of nasal septal swell body by observing and measuring it in the normal and deviated nasal septum on CT images.METHODSThe locations of the nasal septal swell bodies on horizontal CT images in 50 normal subjects and 30 patients with deviated nasal septum were studied, and their length, width and the thicknesses of the mucosa of the both sides were measured. The data were analyzed with SPSS.RESULTSSeptal swell bodies were observed in most of CT images. The swell body was fusiform and located anterior to the middle turbinate, with mean(SD) width of (10.30±1.27) mm and length of (31.35±5.18) mm. There no marked difference in thickness of the nasal septal swell body between two sides of the nasal septum in normal nasal septum, but the thickness of the nasal septal swell body in camber side was thicker than that in the other side of the deviate nasal septum.CONCLUSIONThe shape and location of spetal swell body suggests its potential capacity may be to alter the nasal airflow. Additional study is required for its clinical significance.

OBJECTIVE: To observe anatomic structure of jugular foramen region by endoscope, to provide anatomic data for avoiding damnification in the surgery. METHOD: We performed the retrolabyrinthine and retrosigmoid endoscopic surgery on 8 fomalin-fixed adult cadaver specimens and observed the structures of jugular foramen by endoscope and compared the different surgeries at the same time. We excised the calvarium and cereburm and exposured and observed the nerves and vessels. Moreover we measured the the distance from internal accoustic pore to glossopharyngeal and analyse the data by SPSS. RESULT: All retrolabyrinthine endoscopic surgeries were performed successfully. Only 4 postsigmoid endoscopic surgeries were performed without damage of cerebellum which is the major obstacles. The distance from internal accoustic pore to glossopharyngeal was(8.26 ± 1.05) mm. About half of posterior inferior cerebellar arteries located to inboard of nerves. CONCLUSION The jugular foramen region endoscopic surgery can be performed successfully by retrolabyrinthine. The "lockhole" technology by retrosigmoid is more difficult for blocking of cerebella. The internal acoustic porus is a fixed structure of the cerebellopontine angleand a perfect landmark to the surgery.
Adult ; Cadaver ; Endoscopy ; Foramen Magnum ; anatomy & histology ; Humans ; Jugular Veins ; anatomy & histology ; Temporal Bone ; anatomy & histology

Objective To study the gene expression profiles of megakaryocytes(MKs) from human cord blood CD34+ cells in vitro expanded and to understand megakaryopoiesis at the molecular level. Methods CD34+ cells were isolated using density gradient centrifugation and magnetic activated cell sorting. The cells were cultured and stimulated with recombinant human TPO ( 100 ng/ml). After 12 days, the MKs fraction was separated using an anti-CD41 monoclonal antibody by immunomagnetic sorting. The gene expression profiles of MKs, non-MKs as well as meg-01 cells were studied by gene chip assay. THBSI, HOX A9,β-actin, lL-8,Annexin A6, FGF-8 were selected to validate the gene chip results by RT-PCR. Results A total of 116 genes between MKs and non-MKs cells were significantly different, 52 genes were up-regulated and 64 genes were down-regulated. In addition, 158 genes between MKs and meg-01 cells were significantly different, 71 genes were up-regulated and 87 genes were down-regulated. THBSI showed higher expression in MKs than in non-MKs. HOXA9 showed lower expression in MKs than in non-MKs. The expression of β-actin did not show any significant difference in MKs and non-MKs. IL-8 showed higher expression in MKs than in meg-01 cells, while ANXA6 showed lower expression in MKs than in meg-01 cells. The expression of FGF-8 did not show any significant difference between MKs and meg-01 cells. Conclusions MKs, non-MKs and meg-01 cells show different gene expression profiles. The regulatory genes include stress response genes,immune related genes, DNA synthesis and repair genes, metabolism genes, pro-onco genes and tumor suppressor genes.

Objective To construct a prokaryotic expression system for major histocompatibility complex class Ⅰ chain-related gene B ( MICB) and to establish an ELISA method for the detection of anti-MICB antibodies in patients with kidney transplantation. Methods The MICB cDNA fragments were ob-tained by RT-PCR with a pair of specific primers. The MICB cDNA and the prokaryotic expression vector pET-28a were digested by two restriction enzymes and ligated to construct the recombinant expression plas-mid pET-28a-MICB. The transformed E. coli BL21 DE3 strains carrying recombinant expression plasmid were induced by IPTG to express MICB protein. The expressed recombinant proteins were identified by Western blot assay and purified by Ni-NTA Spin column. The purified proteins were coupled to ELISA for the detection of anti-MICB antibodies in patients with kidney transplantation. Results Three common MICB fragments contained the exons 2 and 3 were obtained. The recombinant proteins were expressed in E. coli BL21 DE3 strains carrying pET-28a-MICB and successfully purified by the Ni-NTA Spin column. Results of the Western blot assay confirmed that the obtained proteins were the target proteins. The ELISA method was successfully established and used for the detection of anti-MICB antibodies in 24 patients with kidney trans-plantation. The absorbance values indicated that the sensitivities of three recombinant MICB proteins were different. Conclusion The expression system for MICB gene was successfully constructed. The established ELISA for the detection of anti-MICB antibodies would pave the way for further investigation on the correla-tions between MICB protein and transplantation immunity.

Objective To investigate the effect of local mild hypothermia on the cerebral hemodynamic parameters,plasma Endothelin-1 (ET-1s) and calcitonin gene-related peptide (CGRPs) of the subarachnoid hemorrhage patients (SAH).Methods Sixty patients were divided randomly into local mild hypothermia group and control group (n =30 patients each group).The middle cerebral artery average blood flow rates (VMCAs) and pulse index (PIs) were detected with transcranial Doppler (TCD),plasma ET-1 s and CGRPs were tested on the D1,D7,D10,and D14,respectively.Results The VMCAs in the mild hypothermia group were lower on the D7,D10,and D14 [7 d:(95.46 ±22.48)cm/s vs (110.35 ±32.38) cm/s,t =2.07,P ＜ 0.05 ; 10 d:(85.57 ± 17.47) cm/s vs (97.64 ± 20.55) cm/s,t =2.45,P＜0.05 ;14 d:(57.16 ± 14.36)cm/s vs (70.56 ± 19.42) cm/s,t =3.04,P ＜ 0.01],PIs and plasma ET-1s were lower on the D10 and D14 compared with the control group [PIs:10 d:0.76 ±0.21 vs 0.88±0.25,t =2.01,P ＜0.05;14 d:0.72±0.18 vs 0.84 ±0.19,t =2.51,P ＜0.05] [ET-1s:10 d:(71.37 ± 16.63) pg/ml vs (81.46 ±21.38)pg/ml,t =2.04,P ＜0.05 ;14 d:(55.73 ± 15.18) pg/ml vs (68.28 ± 20.57) pg/ml,t =2.69,P ＜ 0.01].Plasma CGRPs were higher compared with the control group on the D7,D10,and D14 [7 d:(26.55 ±6.45)pg/ml vs (23.64 ±4.56)pg/ml,t =2.02,P ＜0.05;10 d:(24.15 ±7.35)pg/ml vs (20.52 ±6.18) pg/ml,t =2.07,P ＜0.05;14 d:(30.37 ±6.28)pg/ml vs (26.88 ± 4.39) pg/ml,t =2.49,P ＜ 0.05].Conclusions The mild hypothermia treatment could reduce the plasma ET-1s,improve plasma CGRPs,and improve the prognosis of the patients.

Objective To investigate the effects of methylated CpG islands in the promoter region on the expression of killer cell immunoglobulin-like receptor 3DL1 (KIR3DL1).Methods Three voluntary unpaid blood donors carrying high expression allele KIR 3DL1*01502 and three donors carrying low expres-sion allele KIR3DL1*005 were recruited in this study .The nucleotide sequences and the methylated CpG islands in the promoter regions of KIR 3DL1*01502 allele and KIR3DL1*005 allele were analyzed .The NK cells expressing KIR3DL1*01502 and KIR3DL1*005 were respectively treated with 5-aza for the dem-ethylation of CpG islands within the promoters .The expression of KIR3DL1 protein on the surface of NK cells was measured with flow cytometer .Results Two differences at nucleotide sites -65 and -269 were detected within the promoter regions of KIR3DL1*01502 and KIR3DL1*005, resulting in two distinct CpG islands.The CpG islands within the promoter of KIR 3DL1*01502 allele were highly methylated .The ex-pression of KIR3DL1 protein on NK cells which carried KIR 3DL1*01502 allele was significantly increased after the demethylation of CpG islands .However , the treatment of demethylation had no significant effects on the expression KIR3DL1 protein on NK cells harboring KIR3DL1*005 allele.Conclusion The methylated CpG islands within the promoter of KIR 3DL1*01502 allele affected the antigen expression on the surface of NK cells.Different KIR3DL1 alleles might show different mechanisms in regulating antigen expression .

Objectives: To evaluate the effect of TPN plus argine on nutrition status, immune function and postoperative complications in radical treatment of gastro intestinal cancer patients. Methods: 88 cases undertaking radical treatment were randomized into TPN group (normal group)(30 cases), argine group (plus argine)(30 cases) and control group (28 cases). Since POD+1, the former two groups were given intravenous nutrition support continuously for 7 days and argine 80～100ml/day in argine group.Controlled group was given glucose, amino acid solution and electrolytes first, then transited to normal oral food intake. On AOD-1 and POD+8, albumin, pre albumin, transferrin and immune parameters were analyzed; postoperative complications were observed as well. Results: On POD+8, pre albumin and transferrin were improved in normal and argine group. In argine group, IgG?IgE?CD3?CD4?CD4/CD8?NKC activity and IL 2 concentration were obviously higher than that in other two groups( P

OBJECTIVE: To estimate the value of endoscope on postlabyrinthine approach of cerebellopontine angle surgery. METHOD: Transpostlabyrinthine endoscopic excision of glossopharyngeal nerve to treat 2 glossopharyngeal neuralgia patients. Observe the endoscopic eyespot and estimate the appliance and virtue of the surgery. RESULT: The two patients both have satisfied outcomes and remained free of disease after surgical treatment. We got a wide eyespot from trigeminal to vagus nerve. The internal acoustic porous is a fixed structure of the cerebellopontine angle and it is also a perfect landmark during the surgery. CONCLUSION Endoscopic postlabyrinthine approach provides a shorter path to cerebellopontine angle and endoscope provides a unique way to explore the cerebellopontine angle and to identify the exact location of the pathological changes, including a multipoint of view. Complicated and skilled operation restricts the surgery.
Cerebellopontine Angle ; surgery ; Ear, Inner ; surgery ; Endoscopy ; methods ; Humans ; Male ; Middle Aged ; Trigeminal Neuralgia ; surgery

OBJECTIVETo establish a polymerase chain reaction sequencing-based typing (PCR SBT) method for HLA-DPB1 exons 2 and 3, and to analyze their polymorphisms.

METHODSBased on the sequences of HLA-DPB1 loci, locus-specific primers were designed and applied to amplify the target sequences encompassing the entire exons 2 and 3 of HLA-DPB1. The amplification products were digested by enzymes and directly sequenced in both directions. The genotype was assigned by Assign 3.5+ SBT software.

RESULTSSpecific target fragment was obtained with the PCR amplification, and good quality electropherogram was derived by direct sequencing. Among 242 individuals from Zhejiang Han population, 18 HLA-DPB1 alleles were detected. Alleles with a frequency of > 0.05 have included DPB1*05:01:01/135:01 (0.4112), DPB1*02:01:02 (0.1901), DPB1*04:01:01 (0.1136) and DPB1*02:02 (0.0620). A novel HLA-DPB1*168:01 allele has also been identified. Nine polymorphism sites were founded in the exon 3 region, which included a new SNP site 517 A>T.

CONCLUSIONThe PCR-SBT method for exons 2 and 3 of HLA-DPB1 is reliable, which allowed detection of polymorphisms in exon 3 of the HLA-DPB1 gene.

Alleles ; Exons ; HLA-DP beta-Chains ; genetics ; Humans ; Polymerase Chain Reaction ; Polymorphism, Genetic

OBJECTIVETo study the serological characteristics and molecular mechanism for a rare Pk phenotype of the P1Pk blood group system.

METHODSThe blood group of the proband was identified by serological techniques. The coding region and flanking intronic sequences of the β-1,3-N-acetylgalactosyltransferase gene (B3GALANT1) associated with the Pk phenotype were analyzed using polymerase chain reaction sequence-based typing.

RESULTSThe proband was identified as having a rare Pk phenotype including anti-P in her serum. The blood group of her daughter and husband showed a P2 phenotype. The nucleotide sequences of the B3GALANT1 gene of her husband and two randomly-chosen individuals were the same as the reference sequence (GenBank AB050855). Nucleotide position 433 C>T homozygous mutation in the B3GALANT1 was found in the proband, which has resulted in a stop codon at amino acid position 145, which may produce a premature protein capable of decreasing or inhibiting the activity of the β -1,3-N-acetylgalactosyltransferase. The nucleotide position 433 C/T heterozygous in the B3GALANT1 was found in her daughter.

CONCLUSIONThe Pk phenotype resulted from 433 C>T mutation in the B3GALANT1 gene has been identified.

ABO Blood-Group System ; genetics ; Adult ; Base Sequence ; Blood Grouping and Crossmatching ; Female ; Genotype ; Humans ; Male ; Molecular Sequence Data ; N-Acetylgalactosaminyltransferases ; genetics ; Pedigree ; Phenotype ; Point Mutation