6.A clinical study on the efficacy of oral minirin in transsphenoidal surgery patients with central diabetes insipidus
Qi DONG ; Ran YI ; Fengping HAN
Clinical Medicine of China 2010;26(6):631-632
Objective To observe the effect of oral minirin in postoperative transsphenoidal surgery patients with central diabetes insipidus. Methods The changes in the urine volume and osomlality after two weeks of minirin medication (0. lmg, 3 times each day) were observed in 34 patients with central diabetes insipidus underwent transsphenoidal surgery. Results After two weeks of minirin therapy,the average daily urine volume decreased from 7985.40 ±410. 36 ml to 2277. 87 ± 328. 94 ml,and the average plasmas osmolarity increased from 301. 68 ± 3. 59 ml/d to 313. 26 ±4. 87 mOsm/ kg. No adverse reaction was observed during the therapy. Conclusions Minirin is effective and safe in the therapy of postoperative transsphenoidal surgery patients with central diabetes insipidus.
8.Optimal Study on the Fermentation Conditions of S-adenosyl-L-methionine
Han-Zhu DONG ; Pei-Yi LIU ; Tian-Wei TAN ;
Microbiology 1992;0(01):-
This paper focuses mainly on the study of optimal fermentation conditions of S-adenosyl-L-methionine.Effects of carbon sources,nitrogen sources,inorganic constituents,growth factors and adding time of L-methionine on the yield,the content and biomass of S-adenosyl-L-methionine are studied.And ingredients of the culture medium are also optimized by the method of uniform design.The final optimum culture medium contains: glucose 30 g,Yeast powder 11 g,(NH_4)_2SO_4 12 g,K_2HPO_4?3H_2O 5 g,KH_2PO_4 10 g,MnSO_4?H_2O 0.09 g,ZnSO_4?7H_2O 0.14 g,MgCl_20.5 g,CaCl_2 0.3 g,CuSO_4 0.005 g per liter. Using that optimum culture medium,the yield of S-adenosyl-L-methionine can reach 0.9 g/L in Erlenmeyer flask which is 30 % higher than before.Experiment on 5 L fermenter reveals that the accumulation of S-adenosyl-L-methionine can reach 2.66 g/L.Biomass is 23.4 g/L.
9.Applications of global left ventricular myocardial strain in detection of anthracycline-induced cardiotoxicity in breast cancer survivors with postoperative chemotherapy
Yong HAN ; Yun DONG ; Yi LIU ; Lianghua XIA ; Ming CHEN
Chinese Journal of Ultrasonography 2014;23(2):104-108
Objective To assess the clinical significance of three-dimensional speckle tracking imaging (3D-STI) in the evaluation of left ventricular myocardial function in breast cancer survivors with postoperative anthracycline-based chemotherapy.Methods A total of 51 breast cancer survivors with postoperative anthracycline-based chemotherapy were recruited and 31 female healthy volunteers as the controls.Conventional echocardiography and 3D-STI derived parameters [including global longitudinal strain (GLS) and global area strain (GAS)] were measured before and at 3 and 6 anthracycline-based chemotherapeutic cycles.The receiver operating characteristics (ROC) curve was constructed to determine optimal sensitivity and specificity of 3ID-STI derived parameters for the prediction of future cardiotoxicity.Results In comparison with the controls and baseline cases,GLS and GAS deteriorated significantly (P ＜ 0.05 for both).No statistical difference in GCS and conventional parameters showed before and after the initiation of chemotherapy (P ＜0.05,respectively).The ROC curves showed that GAS as the best 3D-STI predictor of patients who develop cardiotoxicity during the follow-up.The area under ROC(AUC) of GAS was 0.894,and its optimal cut-off value was-28.4％,with a specificity of 88.0％ and a sensitivity of 82.9％.AUC of GLS was 0.802,and its optimal cut-off value was-14.3％,with a specificity of 62.0％ and a sensitivity of 85.4％.Conclusions Early decreases in GAS and GLS based on 3D-STI may allow the prediction of subsequent cardiotoxic development accurately in breast cancer survivors with postoperative anthracycline-based chemotherapy.
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