Myocardial condition after transcoronary ablation predicts the curative effect in patients with hypertrophic obstructive cardiomyopathy.
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Adult↗
Biomedical subjects
Xiao-ling Zhang
Publications and source records attributed to Xiao-ling Zhang.
[Experiment study on anoxic phosphate accumulation with nitrite].
Biological phosphorus removal with nitrite was studied in an Sequencing Batch Reactor. The results showed that nitrite can be used as electron acceptor in denitrifying phosphorus removal. Feed mode of nitrite had significant influence on denitrifying phosphorus removal. Anoxic phosphorus assimilation rate could be reached 10.44 mg/(g x h) and percentage of anoxic phosphorus assimilation amount was more than 97%. Granular sludge with denitrifying phosphorus removal activity was cultivated in an SBR. The effects of different operational conditions on formation of granular were studied such as COD loading, settling time, HRT and so on. The average dimension of granular was 315 microm. Its water content was at 96.78%-98.14%, specific gravity 1.0064-1.016 , SVI of sludge 25 40 mL/g, COD removal loading could be reached to 1 5 kg/(m3 x d), nitrogen and phosphorus removal efficiency was more than 90%.
Bacteria, Aerobic↗
[Investigation on inhibitory and apoptosis-inducing effects of saponins from Tribulus terrestris on hepatoma cell line BEL-7402].
OBJECTIVE: To investigate the inhibitory and apoptosis-inducing effects of saponins from Tribulus terrestris (STT) on liver cancer cell line BEL-7402. METHOD: MTT, SRB, Wright staining, acridine orange staining, flow cytometry, and Immunofluorescence microscopy were used to evaluate the effects of STT on BEL-7402 cell line. RESULT: SMT had potent inhibitory effect on BEL-7402 cell line in a concentration-dependent manner. BEL-7402 cells exibited typical morphological alteration of apoptosis when sub-G1 peak could be seen. The expression of Bcl-2 was decreased in STT treated cells as compared with untreated control cells. CONCLUSION: STT exerts its cytotoxic effect on BEL-7402 cells by inducing apoptosis.
Apoptosis↗
[Experiment of simultaneous denitrifying phosphorus accumulation].
Denitrifying phosphorus accumulation (DNPA) and the factors affecting it were studied in a SBR with synthetic wastewater. The results showed that the sludge acclimatized under anaerobic/aerobic operation with good phosphorus removal ability, showed DNPA soon when fed nitrate instead of aeration following the anaerobic stage. Anaerobic stage was a vital premise to DNPA. If DNPA sludge was fed with nitrate prior to anaerobic stage, the DNPA would weaken even disappear. When acetate was used as sole carbon resource in the influent and nitrate did not exist in anaerobic, 1 hour of anaerobic time was optimal. NO3- -concentration in the anoxic was one of the factors affecting DNPA. When nitrate concentration was advanced from 5mg/L to 20mg/L, the percentage of DNPA increased from 11.9% to 48.7% under the condition of anaerobic(2h)-anoxic(1h)-aerobic(2h). But when the NO3- -concentration was enhanced upwards of 20mg/L, the efficiency cannot be improved. Induced DNPA did not disappear even though there was aerobic stage following anoxic stage, but the shorter the aerobic stage lasted the higher proportions of phosphorus removal via DNPA to total removal.
Bacteria, Aerobic↗
[Determination of microamounts of palladium by triple-wavelength overlapping spectrophotometry].
The method for the determination of microamounts of palladium with 2-(3,5-dichlolor-2-pyridylazo)-5-dimethylaminoaniline (3,5-diCl-PADMA) by triple-wavelength overlapping spectrophotometry has been developed. It's shown that in the medium of 0.02-1.6 mol x L(-1) H2SO4, Pd reacts with 3,5-diCl-PADMA to form a stable 1:1 green-blue complex, which has two different positive absorption peaks and one negative absorption peak at 621 nm, 574 nm and 434 nm respectively, and their absorbance sum showed good linearity with Pd concentration. The apparent molar absorptivity is 2.03 x 10(5) L x mol(-1) x cm(-1), which is twice as high as that of single-wavelength spectrophotometry. Beer's law is obeyed in the range of 0-1.2 mg x L(-1) for palladium. Relatively large amounts of co existing elements, including other precious metal ions, can be tolerated. The method is simple, highly sensitive and selective, and has been used to the determination of microamounts of Pd in ore, alloy and molecular sieve with satisfactory results.
Light↗
[Long term observation in effects of potassium and calcium supplementation on arterial blood pressure and sodium metabolism in adolescents with higher blood pressure].
OBJECTIVE: To investigate the effects of potassium and calcium supplementation in table salt on reduction of arterial blood pressure and sodium metabolism in adolescents with higher blood pressure. METHODS: A single blind placebo-controlled trial was carried out for two years in 220 adolescents with higher blood pressure, aged 18 - 22 years, who were randomly divided into supplementary group (n = 110) and control group (n = 110). Each of the subjects in the supplementary group and their family members was given 10 mmol of potassium and 10 mmol of calcium mixed in their table salt daily for 24 months. RESULTS: Night urinary sodium and potassium excretion increased (urinary Na(+), P < 0.05; urinary K(+), P < 0.01) and blood pressure lowered by 5.3 mm Hg/1.8 mm Hg in average from the baseline in the supplementary group two years after potassium and calcium supplementation, as compared with that in the control group increased by (1.3/1.7) mm Hg. CONCLUSIONS: Adequate supplement of potassium and calcium in daily table salt intake was an effective way to prevent form hypertension and could promote their urinary sodium excretion and reduction of arterial blood pressure in adolescents with higher blood pressure.
Adolescent↗
[Detection and analysis of SARS coronavirus-specific antibodies in sera from non-SARS children].
OBJECTIVE: To examine the presence of severe acute respiratory syndrome (SARS) coronavirus-specific antibodies in the sera from non-SARS children. METHODS: Indirect immunofluorescent assay and double-antigen sandwich enzyme-linked immunosorbent assay (ELISA) were used to detect the virus-specific antibodies in sera of 1,060 non-SARS children in Guangzhou. RESULTS: All the serum samples from the 1,060 non-SARS children were negative for both IgG and IgM antibodies against SARS coronavirus as determined by indirect immunofluorescent assay, with only two serum samples showing weak positivity for SARS coronavirus-specific antibodies identified by double-antigen sandwich ELISA. CONCLUSION: No SARS coronavirus-specific antibody are present in the sera of non-SARS children.
Adolescent↗