AIM: To assess the relative agreement of GAT and NCT in IOP measurement by comparing the differences between Goldmann applanation tonometer (GAT) and non-contact tonometer (NCT) in intraocular pressure (IOP) detection.METHODS: IOP of 529 eyes of 265 volunteers were measured with both NCT and GAT, respectively.RESULTS: The measurement results of NCT were lower than that of GAT, there was significant difference between the IOP measured with NCT and GAT (19.13 vs23.43, t=22.644, P＜0.05). With the increasing of IOP values, the difference magnitude was greater, especially in IOP group that was more than 30mmHg, but the correlation coefficient became lower.CONCLUSION: The measurement results with NCT are lower than that of GAT. When the IOP with the NCT is in borderline value, it need be corrected with GAT, in order to discover the pathologically elevated IOP and avoid the misdiagnosis and mistreatment of glaucoma.

AlM:To investigate the factors and solutions of Tibetan Plateau excimer laser in situ keratomileusis ( LASlK ) for myopia overcorrection.METHODS: The relevant information, 32 cases ( 58 eyes) in 126 cases (252 eyes) had obvious overcorrection after LASlK were analyzed.RESULTS: Two months after surgery, 32 cases ( 58 eyes) overcorrection (23. 0%), uncorrected visual acuity of 0. 5 ~0. 8, overcorrection range of +1. 50 ~ +2. 25DS, subjective inserts were ≥ 1. 0; Five case ( 7 eyes ) overcorrection 6mo after surgery (2. 8%), uncorrected visual acuity 0. 8~1. 0-2 , overcorrection range is +0. 75 ~+1. 25DS, subjective inserts were≥1. 0. Corneal thickness of overcorrection was 500~563μm, preoperative refraction was -5. 00 ~ -7. 50D, astigmatism -1. 50 ~ -2. 75DC, preoperative best corrected visual acuity ≥1. 0.CONCLUSlON: Overcorrection and long recovery time after LASlK in Tibet, possibly with local factors altitude, temperature, humidity, surgical parameters and situation.

OBJECTIVETo investigate the effects of Ezrin, Moesin and E-Cadherin on the invasion and metastasis of papillary thyroid carcinoma(PTC).

METHODSThe 81 paraffin-embedded specimen of PTC treated in The Second Clinical College of Harbin Medical University from 2005 to 2008 were examined immunohistochemically for Ezrin, Moesin, and E-Cadherin. Normal thyroid tissues adjacent to cancer were control. The correlation of Ezrin, Moesin, and E-Cadherin expressions and clinical features of PTC, including gender, age, tumor size, invasion, lymph node metastasis, and TNM stage, was analyzed.

RESULTSPositive staining rates of Ezrin and Moesin in PTC were significantly higher than those in control (χ(2) were 61.691 and 57.949, P < 0.01, respectively). Positive staining rate of E-Cadherin in PTC was significantly lower than that in control (χ(2) = 64.241, P < 0.01). The positive expression rates of Ezrin and Moesin in PTC increased in the subgroups with age ≥ 45 years, local invasion, lymph node metastasis and stage III-IV, with significant difference respectively (P < 0.01), while the positive expression rate of E-Cadherin in PTC significantly decreased (P < 0.01).

CONCLUSIONSThe up-regulation expressions of Ezrin and Moesin and the down-regulation expression of E-Cadherin were associated with the invasion and metastasis of PTC. Combined detection of Ezrin, Moesin and E-Cadherin in PTC might served as an important predictor for the invasion, metastasis and prognosis of PTC.

Adult ; Aged ; Cadherins ; metabolism ; Carcinoma ; Carcinoma, Papillary ; Cytoskeletal Proteins ; metabolism ; Female ; Gene Expression Regulation, Neoplastic ; Humans ; Male ; Microfilament Proteins ; metabolism ; Middle Aged ; Neoplasm Invasiveness ; pathology ; Thyroid Neoplasms ; metabolism ; pathology ; Young Adult

The purpose of this study was to construct the IgHV and IL-2 coexpressed vector. The IgHV gene fragments were obtained from the peripheral blood of patients with lymphoma, and were cloned into eukaryotic expression vector. Meanwhile, the gene fragments of IgHV linked with gene of IL-2 were inserted into pcDNA3.0 to form a fusion gene of IgHV-IL-2. Then fusion genes were transfected into COS cells by Lipofectin and the expression of IL-2 was detected by ELISA. The results showed that the IgHV/pcDNA3.0 expression vector was successfully constructed. The 3' end of IgHV was linked to IL-2 gene, and IL-2 could be correctly expressed. In conclusion, the expression vector of IgHV-IL-2 can express IL-2 correctly in COS cells.
Cancer Vaccines ; immunology ; Eukaryotic Cells ; metabolism ; Genes, Immunoglobulin ; Genetic Vectors ; Humans ; Immunoglobulin Heavy Chains ; genetics ; Immunoglobulin Variable Region ; genetics ; Interleukin-2 ; biosynthesis ; genetics ; Lymphoma ; immunology ; Recombinant Fusion Proteins ; biosynthesis ; genetics ; immunology ; Vaccines, DNA ; biosynthesis ; genetics ; immunology

A 56-year-old female was admitted to Department of Gastroenterology at Peking Union Medical College Hospital with diarrhea for seven months, and abnormal liver function for six months. She had a history of type 1 diabetes. The main clinical manifestations were recurrent fatty diarrhea and abnormal liver function, accompanied by abdominal and retroperitoneal lymphadenopathy, elevated CA19-9 and CEA. Progressive impairment of hepatic synthetic function and shrinkage of liver developed in a short period of time. The pathology of liver biopsy suggested that nodular regeneration of hepatocytes was followed by hyperplasia of thin bile ducts after submassive necrosis. Intestinal mucosa biopsies were performed twice. The pathology showed that the intestinal villi were completely blunt, accompanied with crypt hyperplasia. Goblet cells disappeared with reduced mucin. Paneth cells were barely seen without intraepithelial infiltration of lymphocytes. Rifaximin was not effective, while glucocorticoids improved clinical situation. The diagnosis of autoimmune enteropathy was finally confirmed by multidisciplinary team including departments of gastroenterology, pathology, endocrinology, hematology, infectious diseases, and rheumatology. With the administration of glucocorticoid and sirolimus, diarrhea relieved and liver function returned to normal.

Overexpression of urokinase-type plasminogen activator receptor (uPAR) on tumor cell surface is essential for invasion and metastasis in a variety of tumor cells. To establish a retroviral-mediated antisense RNA transfer system of uPAR gene for exploring its function on down-regulation of uPAR expression in leukemia cells, the retroviral vector LaCD87SN was constructed by inserting uPAR gene into LXSN vector in an antisense orientation. An uPAR gene antisense RNA transfer system was established by liposome-mediated transfection in combination with cross infection with retrovirus. Human leukemia cells U937 were transduced with aCD87 amphotropic retrovirus, expressing uPAR antisense RNA, and the U937/aCD87 cells was obtained by G418 selection. The integration and expression of antisense uPAR gene were analyzed by polymerase chain reaction (PCR) assay. The cell surface expression of CD87 and the activities of matrix metalloproteinase (MMP) were assayed by flow cytometry (FCM) and gelatin zymography, respectively. The results showed that the amphotropic retroviral producers Am12/aCD87, which expressed antisense RNA of uPAR gene with a titer of 6.3 x 10(5) cfu/ml in supernatants, were obtained by means of transfection and superinfection. U937/aCD87 cells were established by continuative G418 selection after retrovirus infection. In U937/aCD87 cells, the integrated provirus and the overexpression of antisense uPAR gene was confirmed. Compared with U937/NeoR cells, FCM analysis revealed that CD87 expression on U937/aCD87 cell surface was not downregulated significantly. However, MMP-9 secretion was significantly suppressed in U937/aCD87 cells. In conclusion, although the retroviral-mediated antisense RNA transfer could not efficiently suppress uPAR expression on leukemic cell surface, it may interfere the uPAR-MMP interactions.
Flow Cytometry ; Gene Transfer, Horizontal ; Humans ; Leukemia ; pathology ; therapy ; Matrix Metalloproteinase 9 ; metabolism ; RNA, Antisense ; genetics ; therapeutic use ; Receptors, Cell Surface ; analysis ; antagonists & inhibitors ; genetics ; Receptors, Urokinase Plasminogen Activator ; Retroviridae ; genetics ; U937 Cells

The purpose of this study was to determine the changes of pathogens in hematological ward and susceptibility of patients received chemotherapy to antibiotics. The pathogens were taken from blood, urine and sputum of patients who accepted chemotherapy from years 2001 to 2005, then were isolated and identified. The susceptibility test was performed by disk diffusion method. The results showed that the total of 418 strains were detected. Gram-negative bacteria were the most common of nosocomial infection. Pseudomonas aeruginosa, Enterobacter cloacae, E. coli account for the most of Gram negative- bacteria infection and most resistant to broad-spectrum penicillin, Acinetobacter baumannii showed a trend of increase. The ratios of gram positive bacteria and fungi were increased slowly, mainly as Enterococcus and Candida. Enterococcus is the most common cause of Gram-positive bacterial infection. Vancomycin resistance did not occur. It is concluded that Gram-negative bacteria are main cause of nosocomial infection in patients with hematological malignancies. Gram positive bacteria and fungi had been more frequent. Strains resistant to antimicrobial agents increase.
Cross Infection ; epidemiology ; microbiology ; Drug Resistance, Bacterial ; Gram-Negative Bacteria ; drug effects ; isolation & purification ; Gram-Negative Bacterial Infections ; epidemiology ; microbiology ; Hematologic Diseases ; microbiology ; Hematologic Neoplasms ; microbiology ; Humans ; Microbial Sensitivity Tests

OBJECTIVETo explore the feasibility of regulated expansion and committed differentiation potential of JAK2 gene modified hematopoietic stem/progenitor cells in vitro.

METHODSA murine stem cell virus (MSCV) based retroviral vector MGI-F2Jak2, which encodes a green fluorescent protein (GFP) and a fusion protein containing two copies of modified FK506 binding protein (F36v) linked tyrosine kinase JAK2 was cloned. F36v served as a high-affinity binding site for dimerizer AP20187. GpE + 86 packaging cell was transfected with this vector. Bone marrow cells from C57BL/6 mice were transduced by co-cultured with irradiated (1500 cGy) GpE + 86 producer clone for 48 h. Transduced marrow cells were expanded in X-VIVO 15 and divided into four groups as follows: (1) control group; (2) AP20187 alone group; (3) SCF alone group and (4) AP20187 + SCF group. The phenotypes of the expanded cells were analyzed by directly phycoerythrin-labeled anti-Sca1, c-kit, CD(34), Gr1, CD(11b), TER119, CD(41), B220 and CD(3) monoclonal antibodies for flow cytometry. Committed differentiation, progenitor colony assay and spleen colony forming units (CFU-S) were further evaluated.

RESULTSA significant sustained outgrowth of transduced marrow cells was obtained only in the AP20187 + SCF group. Cells expanded up to 10(14)-fold after 80 days culture. The doubling time was about 30 hs. The phenotypes of the expanded cells were homogeneously strong positive for CD(34), c-kit and Sca1, while were almost negative for Gr1, CD(11b), TER119, CD(41), B220 and CD(3). Functional assay demonstrated that the expanded cells had multipotential to differentiate into granulocyte, macrophage, erythrocyte, or B-cells under different cytokines combinations. A prominent megakaryocytic differentiation was observed when cultured with SCF/Tpo/IL-11 combination. The expanded cells were also capable of forming BFU-E, CFU-GM and CFU-Mix in methylcellulose colony assay. The expanded cells over three months could still form CFU-S.

CONCLUSIONSAP20187 combined SCF mediated activation of JAK2 signaling domain can dramatically expand hematopoietic stem/progenitor cells, and the expanded cells can be regulated and committed to differentiate into multilineage cells. This system may provide important insights into stem cell biology and may be promising for gene and cell therapy.

Animals ; Cell Differentiation ; Female ; Hematopoietic Stem Cells ; cytology ; Janus Kinase 2 ; Mice ; Mice, Inbred C57BL ; Protein-Tyrosine Kinases ; genetics ; physiology ; Proto-Oncogene Proteins ; Tacrolimus ; analogs & derivatives ; pharmacology ; Transfection

Objective    To investigate the expression and biological function of centromere protein F (CENPF) in non-small cell lung cancer (NSCLC) and the association with prognosis. Methods    Through retrieving and analyzing the bioinformatics data such as Oncomine database, Human Protein Atlas (HPA), Kaplan-Meier Plotter, STRING and DAVID database, the expression of CENPF in both normal tissues and cancer tissues of lung cancer patients was identified, and the protein interaction network analysis, functional annotation and pathway analysis of CENPF with its associated genes were carried out. Results    CENPF was overexpressed in lung adenocarcinoma tissues, but not in normal tissues. The median overall survival (OS) of NSCLC patients with low expression of CENPF was significantly longer than that of patients with high expression of CENPF. Further sub-analysis showed that low expression group from lung adenocarcinoma patients had longer median disease-free survival and OS compared with high expression group patients. CENPF and its associated hub genes mainly affected the protein K11-linked ubiquitination in biological process, anaphase-promoting complex (APC) in cell composition, ATP binding in molecular function, and cell cycle in KEGG pathway. Conclusion    CENPF is regulated in tumorigenesis and progression of NSCLC, and its protein expression level has the value of early diagnosis and prognosis evaluation in lung adenocarcinoma. It is suggested that CENPF gene can be a potential target for molecular targeted therapy of NSCLC.

OBJECTIVETo compare the effects between felodipine plus irbesartan and felodipine plus metoprolol regimen on blood pressure and the sexual function in young and middle-aged hypertensive women.

METHODSIn this prospective, randomized, parallelized, controlled and fixed combined therapy trial, 99 female patients (aged 18 to 60) with grade 1 and grade 2 hypertension (BP ≥ 140/90 mm Hg and < 179/109 mm Hg, 1 mm Hg = 0.133 kPa) were assigned to felodipine 5 mg q.d + irbesartan 150 mg q.d (F + I group, n = 49) and felodipine 5 mg q.d + metoprolol 47.5 mg q.d (F + M group, n = 50) group. Target blood pressure was < 140/90 mm Hg. The female sexual function index (FSFI) questionnaire, levels of serum estradiol and testosterone were assessed. Female sexual dysfunction was defined as a FSFI score of less than 25.5. Patients were followed up for 24 weeks.

RESULTSThe rate of achieving blood pressure goal between 2 groups was similar at the 4th, 8th, 12th and 24th weeks respectively (42.9% vs. 62.0% at 4th week, 89.8% vs. 90.0% at 8th week, 93.9% vs. 94.0% at 12th week, 98.0% vs. 96.0% at 24th week, P > 0.05). Compared to baseline, scores for the items related to "desire" and "arousal" were significantly improved (P < 0.05), the level of the serum estradiol was significantly elevated [(50.3 ± 37.4) pg/L vs. (54.4 ± 10.8) pg/L before menopause, (18.4 ± 2.9) pg/L vs. (20.2 ± 3.1)pg/L after menopause, P < 0.05] and the level of the serum testosterone was significantly decreased [(722.8 ± 277.1) ng/L vs. (650.0 ± 156.0) ng/L before menopause, (841.2 ± 279.3) ng/L vs. (761.9 ± 197.8) ng/L after menopause, P < 0.05] in the F + I group, while scores for the items related to "sexual desire" and "lubrication" were statistically reduced (P < 0.01), the concentration of the serum estradiol was significantly reduced [(57.4 ± 9.7) pg/L vs. (51.1 ± 12.1) pg/L before menopause, (19.8 ± 2.3) pg/L vs. (17.8 ± 3.3) pg/L after menopause, P < 0.01] and the level of the serum testosterone was significantly increased [(775.6 ± 217.8) ng/L vs. (886.0 ± 186.4) ng/L before menopause, (812.5 ± 311.3) ng/L vs. (914.4 ± 300.2) ng/L after menopause, P < 0.01] in the F + M group. FSFI score was negatively correlated with age and systolic blood pressure levels.

CONCLUSIONfelodipine plus irbesartan or metoprolol for 24 weeks equally reduced blood pressure and the former regimen is superior to the latter on sexual function improvement in this patient cohort.

Adolescent ; Adult ; Antihypertensive Agents ; therapeutic use ; Biphenyl Compounds ; pharmacology ; therapeutic use ; Felodipine ; pharmacology ; therapeutic use ; Female ; Humans ; Hypertension ; drug therapy ; Metoprolol ; pharmacology ; therapeutic use ; Middle Aged ; Prospective Studies ; Sexual Dysfunction, Physiological ; Tetrazoles ; pharmacology ; therapeutic use ; Young Adult