Objective To investigate the polysaccharides constituents from the transgenic crown gall cultures of Panax quinquefolium. Methods The crude polysaccharides PPQ50 and PPQ70 were extracted by water-ethanol method from the crown gall of P. quinquefolium. Four polysaccharides, named PPQ50-1, PPQ50-2, PPQ70-1, and PQ70-2, were isolated and purified by DEAE Sepharose and Sephacry S-100 column chromatography. Results The homogeneity of four polysaccharides was examined by gel chromatography and polarimetry. Their molecular weights were determined by gel filtration chromatography. They were 4.7?104, 2.9?105, 7.5?104, and 1.3?105, respectively. The sugar composition was analyzed by HPLC. The polysaccharides are mainly composed of neutral sugar particularly of D-glucose. The structure elucidation of PPQ50-2 was also supported by 1H-NMR and 13C-NMR spectroscopy. Conclusion All of the four polysaccharides are first isolated and purified from the transgenic crown gall cultures of P. quinquefolium.The result shows the PPQ50-2 and PPQ70-2 are both glucans.

OBJECTIVE:To study the in vitro dissolution of Enalapril maleate and folic acid tablet. METHODS:HPLC was performed on the column of Agilent HC-C18 with mobile phase A of acetonitrle-phosphate buffer solution(70:30,V/V) and mobile phase B of acetonitrle-phosphate buffer solution(5:95,V/V)(gradient elution) at a flow rate of 1.0 ml/min,detection wavelength was 215 nm,column temperature was 50 ℃,and volume injection was 80 μl. Media were water,hydrochloric acid solution(pH 1.2),phosphate buffer solution(pH 5.0)and phosphate buffer solution(pH 6.8),medium volume was 900 ml and rotation speed was 50 r/min. The dissolution behavior of enalapril maleate in Enalapril maleate and folic acid tablet in 4 media were studied and compared with the dissolution behavior in vitro in original preparation of Enalapril maleate tablet,meanwhile,the dissolution behar-ior of folic acid in Enalapril maleate and folic acid tablet in phosphate buffer solution(pH 5.0)were studied and compared with dis-solution data of folic acid preparation in Japanese Orange Book to evaluate the intrinsic quality. RESULTS:The linear range was 0.561-14.03μg/ml for enalapril maleate(r=0.999 9)and 0.043-1.085μg/ml for folic acid(r=0.999 9),respectively;RSDs of pre-cision and stability tests were lower than 2.0%;recoveries of enalapril maleate in 4 media were 100.63%-102.33%(RSD=0.72%, n=9),99.27%-100.44%(RSD=0.41%,n=9),99.71%-100.29%(RSD=0.15%,n=9)and 96.74%-99.19%(RSD=0.79%,n=9),respectively. Recoveries of folic acid were 100.18%-101.63%(RSD=0.48%,n=9),97.73%-101.81%(RSD=1.32%,n=9),99.60%-102.24%(RSD=0.74%,n=9)and 100.00%-102.76%(RSD=0.90%,n=9),respectively. In 15 min,the dissolution of enalapril maleate of 2 preparations in 4 dissolution media were more than 85%;dissolution speed of folic acid in Enalapril male-ate and folic acid tablet was faster than that in folic acid preparation in phosphate buffer solution(pH 5.0). CONCLUSIONS:The method is suitable to determine the dissolution of Enalapril maleate and folic acid tablet;the in vitro dissolution curve of enalapril maleate in Enalapril maleate and folic acid tablet is similar to Renitec,and the in vitro dissolution of folic acid is better than folic acid preparation.

Objective To assess the relationship between endometrium damage and focal distance of high intensity focused ultrasound ablation(HIFU).Methods 150 patients with requirement of atoke from Ⅱ type uterine fibroids under HIFU were collected and divided into two groups by the location of fibroids,one was antetheca group, and the other was posterior group,which were further divided into three groups,A group(25 cases),B group(25 cases), and C group(25 cases),in which their distance were 15mm,18mm,and 20mm from endometrium respectively.Those patients were treated with HIFU,and improvement of symptoms was assessed by uterine fibroids symptom (UFS) score,energy efficiency factor(EEF)was served as total energy required by treatment,the closest distance from mar-gin of necrosis of fibroids to endometrium and the rate of ablation were detected by MRI,as well as integrity of endo-metrium and vaginal bleeding were observed on postoperative 2 days and 3 months.Results After treatment by HIFU,significant improvement of symptoms was found,especially for the fibroids in antetheca(t =3.868,P =0.01), moreover,as for the fibroids in antetheca,the obvious efficacy was found in B group and C group(F =4.711,P <0.05),while for posterior fibroids,the efficacy was not associated with the location of HIFU(F =3.898,P >0.05).In addition,high rate of ablation and low EEF for the fibroids in antetheca was found(t =9.818,11.224,respectively,all P <0.01),and the highest rate of ablation in A group was revealed(F =105.673,P <0.01),followed by that of B group,the worse was C group.While in posterior fibroids,the distance was not associated with the rate of ablation(F =0.485,P >0.05).There was significant difference of integrity rate for endometrium between antetheca and posterior fibroids on postoperative 2 days(93.33% vs.77.33%,χ2 =7.67,P <0.05),and the rate in antetheca fibroids was higher than that of posterior fibroids(94.67% vs.82.67%)on postoperative 3 months.After postoperative 2 days,as for the fibroids in antetheca,the rate of integrity in B group(100.00%)and C group(100.00%)was higher than that in A group(80.00%),while in posterior fibroids,the highest rate was in C group(100.00%),followed by B group, which of A group was the worst(60.00%);After postoperative 3 months,in the fibroids of antetheca,there was no sig-nificant difference of rate between B group and C group,which were higher than that in A group(84.00%),while in posterior fibroids,the highest rate was in C group(100.00%),followed by B group(84.00%).In addition,significant difference between varied focal distance and improvement of vaginal bleeding existed in antetheca and posterior fibroids(P <0.05),for example the score of vaginal bleeding in B group and C group at postoperative 3 months was lower than that in A group(F =7.292,P <0.01),while for posterior fibroids,the efficacy of C group was higher than that of B group(F =14.559,P <0.05 ).Conclusion Although improved efficacy of Ⅱ type uterine fibroids is offered by HIFU,for the minimum damage of endometrium,its focal distance is varied with the locations of fibroids, namely,the safe distance in antetheca is more than 18mm,while that in posterior fibroids is more than 20mm.

Objective To explore the best in vitro PICC measurement in children with blood cancer. Methods 70 cases of hematology-oncology patients who aged from 1 to 7 years old from June,2009 to July, 2010 in Pediatric Hematology Oncology were selected and divided randomly into the control group and the observation group with 35 cases in each group. The measurement of the control group was from the pre-puncture point along the vein to the right chest acromioclavicular joint, the measurement of the observation group was from the pre-puncture point along the vein to 1cm below the right chest acromioclavicular joint. Results The rate of PICC placed in the lower superior vena cava was 94.29% in the observation group, and 57.14% in the control group, the difference was significant. Conclusions For children patients aged from 1 to 7 years old with blood cancer, PICC catheter length measurement from the prepuncture point along the vein to 1cm below the right chest acromioclavicular joint, can improve accuracy for the PICC into the lower superior vena cava.

Objective To investigate the biosynthesis of arbutin by suspension culture of crown gall of transgenic Panax quinquefolium. Methods Hydroquinone in methanol(60 mg/mL) was added to the medium of the crown gall of P.quinquefolium after precultured for 20 d,then they were co-cultured for another 60 h.The product was isolated and purified by column chromatography and its structure was identified by physicochemical properties and spectroscopic data.The dynamic curve of biotransformation was investigated by quantative analysis of arbutin with HPLC.Results The product could be obtained from both of the culture and medium,which was isolated and elucidated as 4-hydroxyphenyl-?-D-glucopyranoside(arbutin).After co-cultured for 60 h,the mole conversion ratio of hydroquinone is 88.4%,the product contents in culture and medium are 63.69 mg/flask and 1.86 mg/flask,respectively,and the excretion ratio of arbutin reaches the highest(2.92%).Conclusion It's the first time around the world that the crown gall of transgenic P.quinquefolium is used as a biotransformation system and arbutin which shows varied pharmacological activites have been got successfully.

Objective:To explore the combination of high risk screening and family screening for potential patients with Fabry disease in adult hemodialysis population, and to improve the diagnostic efficiency of the disease.Methods:It was a cross-sectional investigation study. High-risk screening for Fabry disease was performed on adult hemodialysis patients with end-stage kidney disease who were admitted to Yongkang First People's Hospital of Zhejiang Province between November 2022 and February 2023. Dry blood paper α-galactosidase A (α-Gal A) detection assay was performed in males, or glycosphingolipids (Lyso-GL-3) detection assay was performed in females. GLA genetic assay was performed for further diagnosis after abnormal screening results. Family screening was carried out on the family members of the confirmed Fabry disease patients, and α-Gal A activity and Lyso-GL-3 of peripheral blood were measured. Additionally, urine routine, blood biochemistry, eye examination, hearing test, cranial magnetic resonance imaging, and electrocardiogram were performed to assess organ damage. Results:Among 244 hemodialysis patients, 139 (56.97%) were males and 105 (43.03%) were females. The age ranged from 25 to 81 years (with median age of 61 years). One female patient with Fabry disease was identified GLA IVS4+919G>A mutation, resulting in a total prevalence of 0.41%. Pedigree screening was conducted on 41 family members of the patient, leading to the confirmation of 12 patients (including the proband), including 3 males and 9 females. Among them, 9 patients were abnormal in enzyme examination, 10 patients were abnormal in substrate, and 11 patients were abnormal in gene sequencing. None of the 12 patients exhibited limb pain, hypohidrosis, angiokeratoma, corneal opacity, and hearing impairment. Eight patients had heart abnormalities. Nine patients had abnormal urine routine (albuminuria or hematuria) and one patient had abnormal renal function. Four patients had abnormal cranial magnetic resonance imaging findings. Conclusions:One GLA IVS4+919G>A mutation family is successfully identified through the combination of high-risk screening and family screening in adult hemodialysis patients, with a total of 12 cases of Fabry disease. The combination of high-risk screening and family screening proves to be effective in detecting potential patients with Fabry disease, and improve the screening efficiency of Fabry disease.