Objective To approach therapy of acute lymphoblastic leukemia(ALL) complicating acute respiratory distress syndrome (ARDS) in children.Methods The therapy of seven children diagnosed as ALL complicating ARDS was analyzed, who were treated by anti-infection, methyllprednisolone, ambroxol and constant positive airway pressure (CPAP) assisted ventilation.Results Six cases were recovery and one was death. The cure rate was 85.7%. Conclusion The cure rate is high, when employing combined therapy to treat ALL complicating ARDS.

1.0 mmol/L).The clinical side effects after medication circa were compared between two groups.Results There was no significant difference in myelosuppression,liver functional lesion,gastrointestinal tract reaction and infection in 2 groups.But following the increase of MTX blood drug level,the incidence rate of skin mucosa contamination,electrocardiographic abnormality,the cardiac creatase abnormity and nervous system symptoms significantly increased.Conclusions In the course of child ALL treatment with HD-MTX+CF,the side effects are common and individual difference is obvious.Specific treatment on individuals is suggested.J Appl Clin Pediatr,2006,21(3):170-171

Child ; Erdheim-Chester Disease ; Female ; Humans

Animals ; Apoptosis ; Caspase 3 ; metabolism ; Caspase 8 ; metabolism ; Cells, Cultured ; HSP70 Heat-Shock Proteins ; metabolism ; Heat Stress Disorders ; metabolism ; Myocytes, Cardiac ; metabolism ; Rats ; Rats, Wistar

This article was aimed to study pretreatment method of styrene type macroporous resin and its application in the industrial production. The organic residues and heavy metals of styrene type macroporous resin were detected respectively by gas chromatography and atomic absorption spectrophotometry before and after pretreatment to optimize the pretreatment process. The results showed that contents of organic residues and heavy metals of styrene type macroporous resin with the preferred method of pretreatment are in line with relevant regulations. It was concluded that this pretreatment method was simple and feasible, which is suitable to be applied in the industrial production.

Objective To investigate the effects of dibutylphthalate (DBP) on the proliferation and apoptosis of HL-60 leukemic cells and to study its mechanism to purge leukemic cells.Methods The effects of DBP on proliferation of HL-60 leukemic cells were measured by cell culture method. The effects on apoptosis were measured by the percentage of the apoptotic cells in morphology and of the DNA fragmentation and by DNA gel electrophoresis. The intracellular free Ca~(2+) concentration ([Ca~(2+)]i) of leukemic cells were measured by Fura-2AM method. The protein expressions of c-myc and bcl-2 genes of leukemic cells were measured by immunohistochemical assay.Results DBP could suppress the proliferation of HL-60 leukemic cells in a dose-dependent and time-dependent manner and induce them to die via apoptosis.It could elicit a intracellular Ca~(2+) redistribution and a potent extracellular calcium influx. It also down-regulated the protein expressions of c-myc and bcl-2 genes of HL-60 leukemic cells.Conclusion DBP can purge (HL-60) leukemic cells in vitro by increasing [Ca~(2+)]i of cells to initiate apoptosis and down-regulating bcl-2 and c-myc proto-gene expressions to promote cell apoptosis.

BACKGROUND:Lumbar spine MRI and electrophysiological test are reliable methods for evaluating nerve root injury caused by lumbar disc herniation.
OBJECTIVE:To analyze the correlation between the MRI-based grading system and the latency and frequency of F wave as wel as latency and amplitude of H-reflex in patients with lumbar disc herniation.
METHODS:MRI imaging of the lumbar spine was performed with a 3.0-T imager and a dedicated TCL coil to classify lumbar disc herniation and nerve root compression. F wave and H reflex were detected on the patient bilateral tibial nerves using Oxford myoelectricity evoked potential instrument.
RESULTS AND CONCLUSION:Spearman correlation analysis showed that the MRI-based grading of patients with lumbar disc herniation had a negative correlation with F wave frequency (r=-0.594 0, P<0.000 1), and a positive correlation with F wave latency (r=0.825 6, P<0.000 1) and H-reflex latency (r=0.875 0, P<0.000 1), but no correlation with H-reflex amplitude (R=0.117 4, P=0.257 3). With MRI grading increased, F wave frequency was decreased, and F wave and H-reflex latency were prolonged gradual y, indicating aggravating nerve root compression.

BACKGROUND: Exercise has been proved to accelerate the proliferation of intervertebral disc cells and extracellular matrix production in healthy rats. For the degenerative intervertebral disc, whether exercise also has positive effects on its cell proliferation, extracellular matrix production or pain relief remains unclear. OBJECTIVE: To investigate the effect of exercise on the extracellular matrix production in a rat model of intervertebral disc degeneration.METHODS: A rat model of intervertebral disc degeneration was prepared by Freund's complete adjuvant injection into the intervertebral disc at L5-6 levels. Then, the model rats were allowed to have a rest for 2 weeks. All rats were then randomly divided into exercise and control groups. Rats in the exercise group were forced to run every day, while the controls allowed free activities in the cage. The behavioral tests were performed at 7, 14, 28, 42, 56 and 70 days after modeling; meanwhile, the intervertebral disc samples were collected used for alcian blue staining and immunohistochemical staining to detect the levels of proteoglycan, aggrecan and collagen type Ⅱ in the intervertebral disc cells, respectively.RESULTS AND CONCLUSION: Vocalization threshold on the rat back of punctured disc was significantly decreased, while grooming and wet-dog shaking were significantly increased at 7 days after modeling compared with the baseline (P < 0.05), suggesting that Freund's complete adjuvant injection successfully induces disc degeneration, hyperalgesia and abnormal behaviors. Further, the vocalization threshold and wet-dog shaking in the exercise group showed significant improvement compared with the control group after 14 days of exercise (P < 0.05), while the grooming was significantly reduced until the 28th day (P < 0.01), indicating that exercise can alleviate pain caused by disc degeneration in model rats. At 21 days after modeling, the levels of proteoglycan, aggrecan and collagen type Ⅱ in the nucleus pulposus and annulus fibrosus were significantly decreased compared with the baseline (P < 0.01), indicating the occurrence of disc degeneration. After 14 days of training, the levels of proteoglycan, aggrecan, and collagen type Ⅱ in the nucleus pulposus and annulus fibrosus in the exercise group were significantly increased compared with the control group (P < 0.01). Moreover, after 8-week exercise, the level of proteoglycan in the nucleus pulposus and annulus fibrosus in the exercise group was increased by 4-5 times compared with the control group, and levels of aggrecan and collagen type Ⅱ in the nucleus pulposus in the exercise group also was increased by 3-4 times compared with the control group. To conclude, exercise can promote extracellular matrix increased by production by increasing the levels of proteoglycan, aggrecan, and collagen type II in the degenerative intervertebral disc.

Objective · To investigate the difference in myocardial strain of left ventricle between obstructive hypertrophy cardiomyopathy (HCM) and nonobstructive HCM. Methods · Cardiac magnetic resonance imaging (MRI) exam was performed on 48 sequential enrolled patients with HCM (18 with obstructive HCM, and 30 with nonobstructive HCM), whose left ventricular ejection fractions (LVEF) were over 50%. Twenty-five healthy volunteers were examined as normal controls. Global longitudinal strain (GLS), global radial strain (GRS), global circumferentialstrain (GCS), LVEF, left ventricular end diastolic volume (LVEDV), left ventricularmass (LVM), left ventricular end diastolic volume index (LVEDVI), and left ventricular mass index (LVMI) were collected and compared. Radial strain, circumferential strain and peak radial displacement were also measured in medial segment of left ventricle according to American Heart Association (AHA) 17-segment model. Results · ① LVEF of the patients with obstructive HCM was bigger than those of nonobstructive HCM patients and control group (P<0.05). LVM and LVMI of the HCM groups were bigger than those of control group (P<0.01). ② Left ventricle GLS, GRS, and GCS significantly decreased in the patients with nonobstructive HCM compared to those with obstructive HCM (P<0.05). The three parameters of two HCM groups were significantly lower than those of healthy volunteers (P<0.05). ③ Compared with obstructive HCM patients,the segmental parameters of left ventricule, the medial segment circumferential strain and radial strain of nonobstructive HCM patients significantly decreased (P<0.05), and the two parameters of both HCM groups were lower than those in healthy volunteers. Compared with obstructive HCM patients and healthy volunteers, peak radial displacement of left ventricule medial segment in nonobstructive HCM witnessed a significant decrease, while no significant difference was observed between obstructive HCM patients and healthy volunteers. Conclusion · In the LVEF preserved HCM patients, the myocardial strain of left ventricle in nonobstructive HCM patients decrease significantly than that in obstructive HCM patients, which may result in the different clinical outcomes intwo types of HCM patients. It is suggested that the myocardial strain is more sensitive than ejection fraction in the evaluation of myocardial performance of HCM patients.

Objective:To explore the therapeutic effect of psychological and drug intervention on anxiety and depres‐sion in patients after coronary artery bypass graft (CABG) .Methods :A total of 115 patients performed CABG were randomly divided into combined intervention group (n=60) and routine nursing group (n=55) .During peropera‐tive period ,combined intervention group received psychological intervention ,flupentixol and melitracen tablet and sertraline based on routine nursing .A total of 25 matching normal people were selected from community and regar‐ded as normal control group ,scores of Zung self‐rating anxiety scale (SAS) and self‐rating depression scale (SDS) were evaluated and compared among three groups before and after operation .Results :Before intervention ,there were no significant difference in standard scores of SAS and SDS between combined intervention group and routine nursing group ( P > 0.05) ,but they were all significantly higher than those of normal control group , P < 0.01 all . After operation ,standard scores of SAS and SDS in combined intervention group were significantly lower than be ‐ fore operation ( P < 0.01 both) ,and they were significantly lower than those of routine nursing group [SAS : (41.31 ± 6.13) scores vs .(51.35 ± 8.95) scores ,SDS : (40.20 ± 5.80) scores vs .(51.22 ± 8.78) scores , P < 0.01 both] . Conclusion :Psychological combined drug intervention could significantly relieve anxiety and depression in patients after coronary artery bypass graft ,which is helpful for improving postoperative prognosis .