2.The dose-effect and its mechanisms of preventive effects of ~(103) Pd radioactive stent on in-stent restenosis in rabbits
Jiyan CHEN ; Hong YAN ; Shuguang LIN
Chinese Journal of Interventional Cardiology 2003;0(05):-
Objective To investigate the dose-response and its mechanisms of preventive effect of 103 Pd radioactive stent on restenosis in rabbits after balloon injury. Methods The abdominal arteries of the rabbits randomized into common or radioactive stent groups (including 5 Gy, 15 Gy, 25 Gy, 35 Gy groups) were balloon injured, and then stented. Intravascular ultrasound and angiography on abdominal arteries, immunohistochemical study of PCNA, and TUNEL assay were performed 8 weeks after stenting. Results Both the minimal lumen diameters and in-stent lumen areas in 103 Pd radioactive stent groups [(1.94?0.21) mm and (5.99?0.43) mm2, (2.17?0.12) mm and (7.01?0.93) mm2, (2.43?0.22) mm and (8.09?0.89) mm2, (2.56?0.27) mm and (8.49?0.54) mm2 in turn in 5 Gy, 15 Gy, 25 Gy, 35 Gy groups, respectively]were significantly improved with increases of the doses at the end of 8 weeks,revealing a dose-response effect. The positive ratio of PCNA in each 103 Pd stent group was reduced as compared with that in commen stent group (P
3.Pharmacokinetic Characteristics of Meropenem During the Shock Phase of Severely Burned Patients
Hong YAN ; Cai LIN ; Yuesheng HUANG
Journal of Chinese Physician 2000;0(11):-
Objectives To investigate the parmacokinetic characteristics of Meropenem used during the shock phase of severely burned patients. Methods The concentration of Meropenem in the plasma, blister and urine of 11 burn patients during the shock phase (S group) were determined by high performance liquid chromatography after the iv injection of Meropenem. Pharmacokinetic parameters were thus produced by 3P97 software. 6 healthy volunteers served as control group (C group). The t test was used to analyze difference between pharmacokinetic parameters of burned patients and healthy volunteers. Results Compared to those in control group, pharmacokinetic parameters of Meropenem in S group showed significant difference, such as prolonged elimination half-life (t1/2?):[(2 29?0 54)h vs (1 34?0 16)h] and decreased clearance(CLs): [(11 34?3 08)L? h-1 vs (18 76?4 60)L?h -1 ], and enlarged area under the serum concentration versus time curve(AUC):[(47 85?16 15)?g?h?ml -1 vs (27 54?10 76)?g?h?ml -1 ]. Conclusions Meropenem at the dose 500mg iv 3/d can show good activity (both in plasma and wound tissues)against most of pathogens which are common in burn clinic. The intervals should be prolonged when maximum dosage of Meropenem was administered in burn patients during the shock phases.
4.Study on changes of serum T helper cell type 1 and 2 cytokines after active immunotherapy in women with unexplained habitual abortion
Lihua QIU ; Qide LIN ; Yan HONG
Chinese Journal of Obstetrics and Gynecology 2001;0(07):-
Objective To investigate the changes of serum T helper cell (TH)1/TH2 type cytokines after the active immunotherapy in unexplained habitual abortion (UHA) women. Methods Concentrations of interleukin (IL) 2, IL 12, interferon (IFN) ?, IL 4, IL 10 and transforming growth factor (TGF) ?1 were measured by enzyme linked immunosorbant assay (ELISA) method in sera from thirty three cases of unexplained habitual abortion (UHA) women before and after active immunotherapy. Thirty normal non pregnancy (NNP) women and thirty normal pregnancy (NP) women were taken as control. Results (1) Serum concentrations of IL 2 and IL 12 were higher significantly (P
5.Comparison of fundus fluorescein angiography and indocyanine green angiography for imaging of subretinal hemorrhage in age-related macular degeneration
Yonghao LI ; Lin LU ; Hong YAN
Chinese Journal of Ocular Fundus Diseases 2001;0(03):-
Objective To compare the effects of fundus fluorescein angiography (FFA) and indocyanine green angiography (ICGA) on classifications and locations of choroidal neovascularization (CNV) located under subretinal hemorrhage in age-related macular degeneration, and on the area-measuring of subretinal hemorrhage. Methods The medical record of 177 patients with subretinal hemorrhage associated with AMD confirmed by photochrome of ocular fundus, FFA and ICGA examinations were retrospectively reviewed. The locations and classifications of CNV on the images of FFA and ICGA in the 177 patients and the area of subretinal hemorrhage of 30 patients randomly selected from the 177 patients were analyzed and measured. Results On the images of FFA, the locations and classifications of CNV could be defined in 160 patients (90.4%), and CNV was considered eligible for laser therapy in 24 patients (13.6%). On the images of ICGA, the locations and classifications of CNV could be defined in 175 patients (98.9%),and CNV was considered eligible for laser therapy in 51 patients (28.8%). There was no statistical difference of the locations (Z=-0.383,P=0.701) and classifications (?2=2.993,P=0.810) of CNV on the images of FFA and ICGA. The areas of blocked fluorescence measured on the images of FFA (=26.610 mm2 and M= 13.548 mm2) were larger than those of ICGA (=24.714 mm2, M=12.875 mm2) with statistical differences (Z=-3.000,P=0.003) between FFA and ICGA. Conclusions ICGA is beneficial for imaging CNV located under subretinal hemorrhage, and may increase the number of the patients who are considered eligible for laser treatment. The effect of measurement of the area of subretinal hemorrhage in AMD evaluated by FFA is better.
7.Quantification of posterior capsular opacification after cataract surgery
Yan, DING ; Lin, LIU ; Shi-Hong, ZHAO
International Eye Science 2009;09(3):405-408
AIM: To evaluate posterior capsular opacification (PCO) with hydrophobic acrylic intraocular lens (IOL, Sensar AR40e) and silicone IOLs after cataract surgery, to use a software program developed to provide an objective assessment of the amount of PCO in the digital images of the posterior capsule to quantify PCO. METHODS: Ninety-eight eyes underwent standardized phacoemulsification and "in the bag" IOL placement, were randomized to receive a three piece lens of hydrophobic acrylic or silicone, but lens materials were different in one case. In year 1 and 2, digitized retro-illumination images were taken from the posterior capsule. Images were analyzed by POCO software program, removing the Purkinje light reflexes, contrast enhancement, filtering to enhance low-density PCO. RESULTS: The percentage of PCO were 0.32±0.13 of hydrophobic acrylic IOLs in year 1, compared with 0.39±0.17 of silicone (P=0.37). In year 2, the percentage of PCO were 0.42±0.20 with hydrophobic acrylic IOLs and 0.34±0.18 with silicone IOLs (P=0.50). Of those patients with PCO in year 1 and 2, severity grades were 0.50±0.30 and 0.82±0.58 of hydrophobic acrylic cases, compared with 0.63±0.35 and 0.55±0.35 of patients with silicone IOLs (P=0.52,P=0.69) with no statistical significance.CONCLUSION: The POCO system is capable of producing an objective and repeatable measure of PCO that is relevant to assessing techniques of PCO prevention.
9.Embedding catgut acupoint and blood-letting at trigger point for 58 cases of primary trigeminal neuralgia.
Hong-Yan HAN ; Yong-Qing LIN ; Pei-Yu WANG
Chinese Acupuncture & Moxibustion 2012;32(7):591-592
Acupuncture Points
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Acupuncture Therapy
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methods
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Adult
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Aged
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Catgut
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Female
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Humans
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Male
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Middle Aged
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Phlebotomy
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Trigeminal Neuralgia
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therapy
10.Application of photodynamic therapy combined with compound betamethasone in treatment of hypertrophic scar.
Fang FANG ; Zhang HONG ; Zhao YAN ; Lin MEILING
Chinese Journal of Plastic Surgery 2015;31(5):343-346
OBJECTIVETo investigate the effect of photodynamic therapy combined with compound betamethasone in the treatment of hypertrophic scar.
METHODS37 cases of keloid were divided into two groups, 19 cases in the treatment group, 18 cases in the control group. The patients in treatment group were treated with photodynamic therapy combined with compound betamethasone injection therapy. The patients in the control group were treated by compound betamethasone injection. The effect and recurrence rate were compared before and after treatment.
RESULTSThe effective rate was 89.5% in the treatment group, 55. 6% in the control group, showing significant difference between the two groups (P = 0.029) The relapse rate in treatment group was significantly lower than that in the control group (P = 0.047) CONCLUSIONS: Photodynamic therapy combined with compound betamethasone has good effect and safety for the treatment of hypertrophic scar. The combined treatment can reduce the treatment period and side effects
Betamethasone ; therapeutic use ; Case-Control Studies ; Cicatrix, Hypertrophic ; drug therapy ; Combined Modality Therapy ; methods ; Glucocorticoids ; therapeutic use ; Humans ; Photochemotherapy ; methods ; Recurrence