Adult ; Hematopoietic Stem Cell Transplantation ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive ; complications ; surgery ; Male ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma ; complications ; surgery

Adolescent ; Adult ; Female ; Graft vs Host Disease ; etiology ; prevention & control ; HLA Antigens ; immunology ; Haplotypes ; Hematopoietic Stem Cell Transplantation ; adverse effects ; methods ; Histocompatibility Testing ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive ; therapy ; Leukemia, Myeloid, Acute ; therapy ; Male ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; therapy ; Survival Analysis ; Young Adult

Humans ; Laryngeal Neoplasms ; pathology ; Male ; Middle Aged ; Neurilemmoma ; pathology

Purpose To investigate the serum prostate specific antigen( PSA)feature of high grade prostatic intraepithe1ia1 neop1asia ( HGPIN)patients,and the association of the number of cores positive for HGPIN on initia1 biopsy and the risk of cancer deve1opment in second biopsy. Methods 492 cases of patients with suspicious prostate cancer were schedu1ed for transrecta1 u1trasound prostatic biopsy with an 8-core temp1ate. In the first biopsy,186 cases of patients with PCa,34 cases of patients with iso1ated HGPIN( on1y one core invo1ved with HGPIN)and 13 cases of patients with extensive HGPIN( two or more cores invo1ved with HGPIN),64 cases of pa-tients with LGPIN,195 cases of patients with BPH. The va1ues of PSA were ana1yzed and compared within these groups. In patients with extensive HGPIN or iso1ated HGPIN we proposed a repeat 8-core biopsy after 6 months independent of serum PSA 1eve1. The same measure was app1ied for patients diagnosed as LGPIN or BPH in the first biopsy with accompanying increase or persistent e1evation of serum PSA 1eve1. The incidence of PCa was ana1yzed and compared within these groups. Results The serum PSA 1eve1s were no sig-nificant1y different between LGPIN and BPH(P>0. 05),between iso1ated HGPIN and LGPIN(P>0. 05),and between iso1ated HG-PIN and BPH(P>0. 05). The serum PSA 1eve1s were significant1y different between extensive HGPIN and LGPIN(P<0. 05),be-tween extensive HGPIN and BPH(P<0. 05),and between extensive HGPIN and iso1ated HGPIN(P<0. 05). In the second biopsy, the incidence of PCa in patients with extensive HGPIN was 38. 48%,that in patients with iso1ated HGPIN was 9. 68%,that in patients with LGPIN was 12. 50%,and that in patients with BPH was 12. 20%. Conclusions The features of PSA in patients with iso1ated HGPIN are simi1ar to BPH,PSA 1eve1 in patients with extensive HGPIN were between PCa and BPH,and patients with extensive HG-PIN have a higher incidence of PCa in second biopsy than iso1ated HGPIN and BPH.

It has need to separate red blood cells (RBC) from marrow graft in ABO group unmatched BMT and auto-BMT with purging tumor cells, the separating effect of methylcellulose was observed. The mixture of 0.5% methylcellulose and bone marrow was laid up in an open transfusion system, and then sedimentation of RBC was performed in the transfusion tube. The separating results of 18 marrow grafts showed that the recovery rates of mononuclear cells and CD34(+) cells were (83.8 +/- 55.2)% and (90.3 +/- 7.2)%, respectively. RBC residual rate was (4.3 +/- 1.5)%. The yield of CFU-GM was (60.8 +/- 22.4)/2 x 10(5) MNC, and there was no difference to [(69.8 +/- 23.4)/2 x 10(5) MNC] yielded from same marrow samples, separated by Ficoll-Hypaque separation. It is concluded that this method could be used for bone marrow transplantation.
Bone Marrow Transplantation ; methods ; Cell Separation ; methods ; Erythrocytes ; immunology ; Humans ; Methylcellulose ; pharmacology

Brain computer interface (BCI) is an information channel independent of routine brain output ways such as peripheral nerves and muscle organization. As a special human-computer interface mode, it provides a direct communication pathway between the brain and external devices so as to exert control over those devices by ways other than primitive human communication. Controlling over mobile peripheral devices such as intelligent wheelchairs or nursing robots is a very important application of BCI technology in the future. This paper describes the newest progress of the above mentioned technology, analyzes and compares key techniques involved, and forecasts future development in this field.
Algorithms ; Brain Diseases ; rehabilitation ; Communication Aids for Disabled ; Computer Systems ; Electroencephalography ; instrumentation ; Evoked Potentials ; physiology ; Humans ; Neuromuscular Diseases ; physiopathology ; rehabilitation ; Signal Processing, Computer-Assisted ; instrumentation ; User-Computer Interface

OBJECTIVETo culture and amplify the young rabbit's bone marrow stromal cells (BMSCs) in vitro, and to observe the effect of hypothermia on the cells' growing behavior and biological function.

METHODSBMSCs were acquired from the rabbit' tibia bone marrow and induced to mature osteoblasts in vitro. The cultured cells growing well in vitro were preserved in liquid nitrogen. The anabiotic cells having cryopreserved for 1 week were chosen as the experimental group, and the routine 7th generation as the control group. Their biological function in comparion by the examination of morphological changes, cells' proliferation ability, colone forming ratio, synthesis ability of ALP and protein, mineralized nodes forming ability were observed.

RESULTSAs contrast to the control groups, the anabiotic cells also grew and proliferated well in vitro except a little more slowly than before. They had the similar general shape in all the time segments, but a little differences in cells' ultrastructure. The experimental groups also had the typical characters of mature osteoblasts, and high abilities of the synthesis of ALP and proteins. The statistic data showed that these two groups had no significant difference (P > 0.05).

CONCLUSIONThe cryopreserved osteoblasts had the same biological functions and the similar growing behaviors as before. These results suggest that it is practical to use the cryopreserved osteoblasts for further study on bone tissue engineering.

Animals ; Bone Marrow Cells ; Bone and Bones ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; In Vitro Techniques ; Osteoblasts ; Rabbits ; Tissue Engineering

BACKGROUNDGenetic factors are believed to play a role in the individual susceptibility to chronic obstructive pulmonary disease (COPD). A single nucleotide polymorphism (SNP) of tumour necrosis factor-alpha (TNF-alpha) has been reported but inconsistent results may arise from different populations and phenotypes of COPD. There are only a few published studies of interleukin-13 (IL-13) SNPs on COPD. The SNPs of TNF-alpha and IL-13 have not been studied in the Chinese population. This research was conducted to study the frequencies of IL-13 gene promoter 1055 (IL-13-1055) and TNF-alpha gene-308 polymorphisms in the patients with COPD and to investigate the effect of those genetic polymorphisms on COPD in the Chinese population.

METHODSA cohort of COPD patients and age matched controls were recruited from an inpatient hospital service in Beijing. Venous blood was obtained and genomic DNA was extracted from peripheral blood monocytes using standard method. Genomic DNA was used as a template for amplification by polymerase chain reaction (PCR) to determine the polymorphism at -1055 in the IL-13 gene promoter region. PCR restriction fragment length polymorphism (RFLP) was used to determine polymorphisms in the TNF-alpha gene-308 position. The products were investigated by sequence analysis also.

RESULTSOne hundred and eleven COPD patients and 97 controls were studied. Seventy-five cases were current smokers in COPD patients and 36 were current smokers in controls. The frequencies of TT genotype in the IL-13 gene promoter region were 11.7% (13/111) in the COPD group and 13.4% (13/97) in the controls (P = 0.713). However, the OR value of TT genotype was significantly increased to 6.4 (95% CI 1.62 - 25.39) in the smokers with COPD. TT genotype was also positively related to family history of COPD, OR = 7.7 (95% CI 1.37 - 43.80). The frequencies of A allele in the TNF-alpha gene were 5.9% in COPD and 3.1% in controls (P = 0.131). The OR value of A allele was 5.0 (95% CI 1.011 to 25.059) in smokers with COPD.

CONCLUSIONSThere is no significant difference in the frequencies of the TT genotype of IL-13-1055 or the A allele of the TNF-alpha between Han Chinese patients with COPD versus control. Thus, it does not appear that these SNPs are independent factors in COPD for Han nationality in Beijing. However, these SNPs may increase the risk of COPD among smokers.

Adult ; Aged ; China ; ethnology ; Female ; Genotype ; Humans ; Interleukin-13 ; genetics ; Male ; Middle Aged ; Polymorphism, Genetic ; Pulmonary Disease, Chronic Obstructive ; genetics ; immunology ; Tumor Necrosis Factor-alpha ; genetics

OBJECTIVETo define the main genotypes in Guizhou agricultural areas by molecular epidemiologic investigation of 21 Borrelia burgdorferi sensu lato of Lyme disease spirochetes and to provide the scientific bases for formulating a preventive policy.

METHODSPolymerase chain reaction (PCR) technique was used to amplify the 23S(rrl)-5S(rrf) intergenic spacer, and amplified products were analyzed by restriction fragment length polymorphism (RFLP) and nucleotide sequencing.

RESULTSThere were two genospecies in the strains: 20 strains belong to Borrelia valaisiana, 1 strain is Borelia sp.

CONCLUSIONBorrelia valaisiana was the main genotype in Guizhou agricultural areas. The harmness of B. valaisiana to human being has been confirmed. In order to efficiently prevent the harmness of agent to the people in Guizhou agriculture areas, we should study the risk further.

Base Sequence ; Borrelia burgdorferi ; classification ; genetics ; China ; DNA, Bacterial ; chemistry ; genetics ; DNA, Ribosomal Spacer ; genetics ; Humans ; Lyme Disease ; microbiology ; Molecular Sequence Data ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length ; RNA, Ribosomal, 23S ; genetics ; RNA, Ribosomal, 5S ; genetics ; Ribotyping ; Sequence Analysis, DNA

DNA, Viral ; genetics ; Gene Silencing ; Genetic Testing ; Hepatitis B virus ; genetics ; physiology ; Polymerase Chain Reaction ; methods ; RNA, Small Interfering ; genetics ; Virus Replication