China ; epidemiology ; Hong Kong ; epidemiology ; Humans ; Microscopy, Electron ; SARS Virus ; genetics ; growth & development ; ultrastructure ; Severe Acute Respiratory Syndrome ; epidemiology ; prevention & control ; virology

20?10 9/L) was observed (mean 41 days, range 12 to 118 days). There w as the association between the number of CD34 +CD44 + cells infusion and time to neutrophic recovery (?= -0.657 , P

Female ; Genetic Predisposition to Disease ; Hepatitis B ; genetics ; Hepatitis B virus ; Humans ; Polymorphism, Genetic ; Pregnancy ; Pregnancy Complications, Infectious ; virology ; Promoter Regions, Genetic ; genetics ; Tumor Necrosis Factor-alpha ; genetics

Objective To investigate the association between endothelial dysfunction and arterial stiffness in continuous ambulatory peritoneal dialysis (CAPD) patients.Methods Ninetyfour stable CAPD patients from a single center were enrolled in this cross-sectional study.Ultrasound evaluation was conducted on brachial artery to estimate endothelial-dependent flow-mediated dilation (FMD).Automatice pulse wave velocity (PWV) measuring system was applied to examine the carotidfemoral PWV.Blood pressure and biochemical parameters were detected.Pearson's correlation and Stepwise multiple regression analysis were performed to explore the relationship between FMD and PWV.Results PWV was significantly higher in patients with diabetes as compared to those without diabetes[(13.25± 1.66) m/s vs (11.24±1.92) m/s,P ＜ 0.01].Furthermore,PWV was positively correlated with age(r=0.319,P=0.002),SBP (r=0.289,P=0.005) and C-reactive protein (r=0.211,P=0.041),was negatively correlated with albumin (r =-0.429,P =0.001) and FMD (r=-0.466,P=0.001).In multivariate regression analysis,diabetes mellitus,albumin,FMD,age and SBP were independently associated with PWV after adjustment.Conclusion Endothelial dysfunction is associated with greater arterial stiffness in CAPD patients.

Objective To understand status and influencing factors for cervical discomfort in medical staff and to provide evidence for cervical spondylosis control. Methods We made a cervical discomfort questionnaire for medical personnel, including information about demography, life style, occupational hazard and symptoms of cervical discomfort. Then we carried out a survey from May to July 2017 in a hospital and used logistic regression model to analyze the influencing factors for cervical discomfort in medical staff. Results There were 965 medical staff participated in the survey, the response rate was 79.88% (965/1 208) . A total of 454 cases reported to have cervical discomfort, the prevalence was 47.05%. The results of multiple logistic regression analysis showed that years of service (OR4-10=2.551, 95% CI: 1.683-3.861; OR ＞10=1.767, 95% CI:1.325-2.358), air pollution in the workplace (ORgeneral=0.612, 95%CI: 0.418-0.898; ORno=0.684, 95%CI: 0.469-0.997), new business adaptability (OR=1.749, 95%CI: 1.325-2.309) were the influencing factors for cervical discomfort in medical staff. Conclusion The prevalence of cervical discomfort is high in medical staff. Years of service, working environment and new business adaptability are associated with cervical discomfort in medical staff.

The objective of this research was to explore whether the number of CD34(+)CD38(+) cells infused affects hematopoietic reconstitution after cord blood transplantation. The number of CD34(+)CD38(+) cells in cord blood was analysed with flow cytometry after freezethawing. The body weight and time for neutrophil and platelet recovery were measured in 20 children with acute leukemia. The results showed that the median number of CD34(+)CD38(+) cells infused was 29.47 (9.85 - 325.71) x 10(4)/kg. A median time for neutrophil recovery (> 5 x 10(8)/L) in 20 patients was 18.5 (11 - 32) days, and time for platlet recovery (> 2 x 10(10)/L) in 19 of 20 patients was 45 (12 - 118) days. The number of CD34(+)CD38(+) cells infused correlated with time to neutrophil and platelet recovery (r = -0.577, P < 0.01 and r = 0.503, P < 0.05, respectively). In conclusion, the number of CD34(+)CD38(+) cells infused is correlated with the time for hematologic recovery.
ADP-ribosyl Cyclase ; analysis ; ADP-ribosyl Cyclase 1 ; Adolescent ; Antigens, CD ; analysis ; Antigens, CD34 ; analysis ; Child ; Child, Preschool ; Fetal Blood ; cytology ; transplantation ; Hematopoiesis ; Hematopoietic Stem Cell Transplantation ; methods ; Humans ; Leukemia, Myeloid, Acute ; blood ; therapy ; Membrane Glycoproteins ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; blood ; therapy

OBJECTIVESeveral studies have shown that L-selectin on CD34-positive cells play a role in hematopoietic reconstitution after peripheral blood stem cell transplantation and allograft bone marrow transplantation. This study sought to investigate whether the numbers of CD(34)(+)CD(62L)(+) cells infused affect the engraftment of hematopoietic stem cells (HSC) and the time to neutrophil and platelet recovery after unrelated umbilical cord blood transplantation for the treatment of childhood acute leukemia.

METHODSTwenty-three children with acute leukemia who received unrelated umbilical cord blood transplantation of mostly mismatched HLA locus were included in this study. Flow cytometry was used to count the numbers of CD(34)(+)CD(62L)(+) cells after freezing-thawing by labelling the cells with anti-CD(34) and anti-CD62L. The patients' clinical data including body weight, engraftment of the HSC, times to neutrophil and platelet recovery were evaluated.

RESULTSTwenty-one patients who received CD(34)(+)CD(62L)(+) cell infusion at a number ranging from 1.37 x 10(5)/kg to 2.68 x 10(6)/kg (median, 3.567 x 10(5)/kg) had successful engraftment of the unrelated umbilical HSC. The numbers of CD(34)(+)CD(62L)(+) cells infused were statistically different between patients who had successful engraftment of the umbilical HSC and those who had not (P < 0.05). The engraftment occurred more commonly in patients who received > 1.3 x 10(5) CD(34)(+)CD(62L)(+) cells/kg. The time of neutrophil recovery (> 500/ microl) ranged from 11 days to 32 days (median, 17.5 days). The data of the time to platelet recovery (> 2 x 10(5)/ microl) were obtained in 18 patients, and it ranged from 12 days to 118 days (median, 14 days). There seemed to be a tendency of correlation between the numbers of CD(34)(+)CD(62L)(+) cells infused and time to platelet recovery (gamma = -0.324, 0.05 < P < 0.1), whereas the numbers of CD(34)(+)CD(62L)(+) cells infused correlated with the time to platelet recovery (gamma = -0.470, P < 0.05).

CONCLUSIONThis study suggests that the numbers of CD(34)(+)CD(62L)(+) cells infused might be involved in the engraftment of HSC and hematologic reconstitution after umbilical cord blood transplantation.

Acute Disease ; Adolescent ; Antigens, CD34 ; blood ; Blood Platelets ; metabolism ; Child ; Child, Preschool ; Cord Blood Stem Cell Transplantation ; methods ; Female ; Humans ; Infant ; Infusions, Intravenous ; L-Selectin ; blood ; Leukemia ; immunology ; therapy ; Male ; Neutrophils ; metabolism ; Treatment Outcome

OBJECTIVEB cell multiplication plays a key role in infections mononucleosis. The present study was designed to detect the expression of B-lymphocyte stimulator (BLyS) mRNA in peripheral blood using real-time fluorescence quantitative polymerase chain reaction (RFQ-PCR) in children with infectious mononucleosis in order to explore the role of BLys in this disorder.

METHODSSpecific primers and TaqMan probes of BLyS were designed, and fluorescence of the PCR products were detected continuously during amplification. According to the standard curves created by plasmid DNA, the expression level of target genes in clinical samples were calculated using Stata Software version 8.0, and the results were presented as the ratio of copies of target gene mRNA to beta2 microglobulin (beta2M) mRNA copies. BLyS mRNA expression in peripheral blood was measured by RFQ-PCR in 18 children with infectious mononucleosis and the results were compared with those measured in 15 healthy controls.

RESULTSThe range of target gene mRNA detected by REQ-PCR was from 109 ng/L to 101 ng/L. The coefficient of variation for intra-experimental and inter-experimental reproducibility ranged from 1.88% to 5.89% and 6.32% to 12.34%, respectively. BLyS mRNA expression in peripheral blood in children with infectious mononucleosis were significantly higher than that in controls (1.65+/-0.10 vs 0.56+/-0.08; P < 0.01).

CONCLUSIONSRFQ-PCR has a high sensitivity and reproducibility for the measurement of BLyS mRNA expression. BLyS may be involved in the development of infectious mononucleosis.

B-Cell Activating Factor ; genetics ; Child ; Child, Preschool ; Female ; Fluorescence ; Humans ; Infectious Mononucleosis ; etiology ; metabolism ; Male ; Polymerase Chain Reaction ; methods ; RNA, Messenger ; analysis

OBJECTIVETo explore the clinical and physical factors that might give rise to radiation-induced esophagitis in three-dimensional conformal radiotherapy for non-small cell lung cancer.

METHODSTo collect the clinical and physical records and follow-up information of 106 NSCLC patients without undergoing surgery in our hospital. χ(2) test, linear tendency test and analysis of variance were employed to analyze the relationship between occurrence of radiation-induced esophagitis and clinical and physical treatment. Logistic analysis was also used for multivariate analysis.

RESULTSAmong the 47 cases of radiation-induced esophagitis, 31 cases were of grade I, 11 of grade II, 5 of grade III, and with a total occurrence rate of 44.3% (47/106). Radiation-induced esophagitis was correlated with Karnofsky scores, radiation sensitization and tumor location (χ(2) = 11.30, 8.45, 7.67, P < 0.05). Radiation-induced esophagitis was correlated with the length of irradiated esophagus and average dose of irradiated esophagus (F = 20.82, 83.08, P < 0.001). With the increase of the irradiated volume percentage from V20, V30, V40 up to V50, the occurrence rate of radiation-induced esophagitis was also increased, almost with a linear trend (P < 0.05). Application of all the above factors to logistic model indicated that radiation sensitization,length of irradiated esophagus, average dose and V50 were all statistically significant foactors in the occurrence of radiation-induced esophagitis (OR = 0.321, 2.850, 7.307 and 8.558, P < 0.05).

CONCLUSIONSRadiation sensitization,length of irradiated esophagus, average dose of irradiated esophagus and V50 are independent factors in the occurrence of radiation-induced esophagitis. V50 is of greater importance in the judgement of occurrence of radiation-induced esophagitis.

Aged ; Carcinoma, Non-Small-Cell Lung ; radiotherapy ; Esophagitis ; etiology ; Esophagus ; pathology ; Female ; Follow-Up Studies ; Humans ; Lung Neoplasms ; radiotherapy ; Male ; Middle Aged ; Multivariate Analysis ; Radiation Injuries ; etiology ; Radiation Tolerance ; Radiotherapy Dosage ; Radiotherapy, Conformal ; adverse effects ; methods ; Retrospective Studies

OBJECTIVETo study the possible relationship between tumor necrosis factor (TNF)-alpha-238G/A gene polymorphism and the susceptibility to intrauterine HBV infection.

METHODSTwo hundred and fifty-six children, including 130 infants born to HBsAg positive mothers were divided into two groups: forty-five children with intrauterine HBV infection (group I) and 85 children without intrauterine HBV infection (group II), with a control group of 126. TNF-alpha-238G/A gene polymorphism was examined in all 256 children, by means of real-time quantitative fluorescent PCR.

RESULTSA significant difference of TNF-alpha-238A allele frequency was found between group I and group II (x2=6.797, P=0.009), and between group I and the controls group (x2=0.047, P=0.002), but there was no significant difference between group II and the control groups (x2=0.047, p=0.828).

CONCLUSIONThis study found that genetic polymorphism of tumor necrosis factor-a was associated with intrauterine HBV infection

Adult ; Child ; Disease Susceptibility ; Female ; Hepatitis B ; transmission ; Humans ; Infant ; Infectious Disease Transmission, Vertical ; Polymorphism, Genetic ; Tumor Necrosis Factor-alpha ; Tumor Necrosis Factors ; genetics