1.Management of primary vesicoureteral reflux in children.
Yan CHEN ; Jie DING ; Jian-ping HUANG
Chinese Journal of Pediatrics 2004;42(10):750-752
2.Review on processing mechanism of Herba Epimedii and new idea
Yan CHEN ; Xiaobin JIA ; Anwei DING
China Journal of Traditional Chinese Medicine and Pharmacy 2006;0(09):-
To elucidate the processing mechanism of Herba Epimedii from the new view of the intestinal absorption and metabolism.From analyzing the literatures of processing mechanism and togethering with the research of our lab,a new idea of processing mechanism of Herba Epimedii was brought:the pharmacologically active and easier absorbed flavonoids might be present more in the herbs when changing the heating processing parameters and thereby increased or maintained the efficacy.This thesis first pointed the new idea and method that the intestinal absorption and metabolism of herbs should be considered when studying the mechanism of processing.
3.Standardization of processing method for Pollen Typhae Carbonisatus
Hui YAN ; Peidong CHEN ; Anwei DING
Chinese Traditional and Herbal Drugs 1994;0(12):-
Objective To establish optimum processing method for Pollen Typhae Carbonisatus. Method Processing method was studied by orthogonal test and the total flavones were determined by HPLC. Conditions of HPLC used to determine the total flavones were: Waters Nove-Park C18 (150 mm?3.9 mm, 4 ?m), mobile phase: MeOH-THF-0.05%TFT (16∶24∶60), flow rate: 0.8 mL/min, column temperature: 30 ℃, detection wavelength: 360 nm. Results The optimum processing method was skir-baked for 8 min at 210 ℃. Conclusion The optimized processing method is available for the processing of Pollen Typhae Carbonisatus.
4.Efficacy of PFNA and Gamma nail in treatment of intertrochanteric fractures in elderly
Hong DING ; Yingying HE ; Yan CHEN
Journal of Regional Anatomy and Operative Surgery 2014;(3):272-274
Objective to observe the efficacy and application value of PFNA and Gamma in the treatment of intertrochanteric fractures in elderly. Methods 100 patients with intertrochanteric fractures were divided into PFNA group and Gamma group, who received PFNA treatment and Gamma treatment respectively. And the operation status of patients at different ages,postoperative recovery,and complications were observed. Results The operation time,intraoperatve blood soss of PFNA group were lower than those of Gamma group(P<0. 05). There was no significant difference in fracture healing time. The Harris score of the over 75s in PFNA group was higher than that in Gamma group(P<0. 05),and the complications were less than Gamma group(P<0. 05). Conclusion PFNA was suitable for the patients at differ-ent ages with the advantages of more rigid fixation,good anti-rotation,fewer trauma and fewer complications.
5.Influence of intraoperative posture intervention on drainage in patients after gynecological laparoscopic surgery
Yun CHEN ; Ming ZHANG ; Yan DING
Chinese Journal of Nursing 2010;45(4):314-316
Objective To investigate the influence of intraoperative posture intervention on drainage in patients after gynecological laparoscopic surgery. Methods A total of 1250 patients who were scheduled for gynecological laparoscopic surgery including laparoscopic-assisted salpingoplasty,oophorocystectomy,ectopic pregnancy,vaginal hysterectomy,myomectomy and appendectomy were randomly divided into two groups. The patients' posture was changed from Trendelenburg position to level lithotomic position during suction by the circulating nurses in the experimental group,while after surgery in the control group. The volume and time of drainage,and the length of stay after surgery were compared between the two groups. Results The volume and time of drainage,as well as the length of stay after surgery had significant differences between the two groups (P<0.05). Conclusions Intraoperative posture intervention is helpful for the treatment effect of drainage after gynecological laparoscopic surgery.
6.Advances in the research of pharmacogenomics of cyclophosphamide.
Ling-Yan CHEN ; Xue-Ding WANG ; Min HUANG
Acta Pharmaceutica Sinica 2014;49(7):971-976
Cyclophosphamide (CPA) is the most common alkylating antineoplastic agent, as well as a strong immunosuppressant that is frequently applied to autoimmune diseases and organ transplantation. It is metabolized by cytochrome P450 oxidases (CYPs) to its active metabolite which played a critical role in therapy. CPA has serious and even fatal side effects, and its efficacy and adverse reactions are significantly varied among individuals. In this review, the association of the genetic polymorphisms in the metabolic enzymes and transporters involved in the disposition of CPA with the efficacy and adverse effects of CPA were summarized, thereby providing fundamental reference for further pharmacogenomic study of CPA.
Antineoplastic Agents, Alkylating
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pharmacology
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Cyclophosphamide
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pharmacology
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Humans
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NADPH-Ferrihemoprotein Reductase
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metabolism
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Pharmacogenetics
7.A study on the diagnosis and a clinicopathologic characteristics of gastrointestinal stromal tumors
Jueji WANG ; Kefeng DING ; Lirong CHEN ; Haijun WANG ; Yan ZHOU ;
Chinese Journal of General Surgery 1997;0(06):-
Objective To study the diagnosis, pathomorphological and immunohistochemical features of gastrointestinal stromal tumor (GIST) and to explore the reference parameters for malignancy. Methods Light microscopy was used to study the morphologic characteristics in 54 cases of gastrointestinal mesenchymal tumors, and the expression of CD117,CD34 and S 100 was detected by EnVision immunohistochemical method. ResultsMost borderline and malignant tumors were found in male. CD117 showed diffuse strong expression, CD34 mostly showed diffuse strong expression, S 100 incidentally showed focal expression, and the positive rates were 100%, 59% and 16% respectively. Conclusions CD117 is a sensitive and specific marker for the diagnosis of GIST. Tumor necrosis, high tumor cellularity and intestinal tumor mitotic activity over 1/50HPF were helpful parameters for judgement of malignancy, tumors are most often seen in male.
8.Role of interleukin-9 in the pathogenesis of chronic obstructive pulmonary disease
Zheng LIU ; Wanzhen YAO ; Yan CHEN ; Yanling DING ;
Journal of Peking University(Health Sciences) 2003;0(04):-
Objective:To study the role of interleukin 9 in the airway inflammation from patients with COPD. Methods: Induced sputum was obtained from 30 COPD patients with stable disease(group A) ,31 asthmatics patients with stable disease(group B) and 15 healthy individuals(group C). IL 9,IL 5 and IL 8 in sputum supernatants were measured by sandwich enzyme linked immunosorbent assay(ELISA) and IL 9 positive expression and quantitative analysis were conducted by Streptavidin peroxidase method and image analysis technology. Results:The levels of IL 9 in group A and B were all significantly higher than those in groups C. IL 9 positive expression mainly located in the cytoplasm of macrophages. The positive rates of IL 9 in group A and B were all significantly higher than that of group C(? 2=20.821, 19.908, P
9.Protective effects of mycophenolate mofetil on kidneys of type 2 diabetic rats
Tanghong YU ; Ruhan JIA ; Guohua DING ; Yan XIONG ; Jian CHEN ;
Chinese Journal of Clinical Pharmacology and Therapeutics 2004;0(10):-
AIM: To evaluate the protective effects of mycophenolate mofetil on the kidneys of type 2 diabetic rats and discover their mechanisms. METHODS: Wistar rats were divided into three groups, such as normal control rats, diabetic rats, and diabetic rats in the treatment with mycophenolate mofetil (MMF, 15 mg?kg -1 ?d -1 ). Thirteen weeks later, urinary albumin excretory rate (UAE), creatine clearance (Ccr), blood glucose, blood insulin and blood lipid were measured, and kidney pathology was observed. Inmmunohistochemistry was used to analyze the expression of CTGF, ColI and ColⅢ. RESULTS: Mycophenolate mofetil decreased UAE, Ccr and reduced glomerular volume. The expression of CTGF and deposition of ECM decreased after diabetic rats received mycophenolate mofetil. CONCLUSION: Mycophenolate mofetil can protect the kidney of diabetic rats. Its mechanism may be related to the decrease of CTGF expression and extracellular matrix deposition in renal tissue.
10.Effect of Repeated Immobilization Stress on Ovarian Function in Female Rats
Xiaoyuan LIAN ; Yan DING ; Qi CHEN ; Juntian ZHANG
Traditional Chinese Drug Research & Clinical Pharmacology 2000;0(06):-
Objective To observe the effects of repeated immobilization on rats ovarian function and to observe the changes of ovarian function in menopause animals.Methods Daily vaginal smears were permfored to follow the estrous cycle in adult female rats.The animals with regular cycle were exposed to the scheduled daily repeated immobilization for 15-day,which included 5 stress episodes with each episode consisting of three immobilizations (one time per day). The duration of immobilization was progressively increased with the subsequent episode. Serum levels of estradiol (E2) and progesterone (P) were measured throughout the estrous cycle before and after the stress.Results The repeated stress resulted in the disruption of the estrous cycle characterized by longer phase of diestrus or by fewer epithelium from vagina in proestrus and estrus.In the stressed rats, a significant decrease of serum E2 and an increase of P were shown throughout the cycle compared to that before stress;the normal secretion cycle was interrupted or even disappeared; changes of serum P level in some rats were similar to the menopause animals.Conclusion Repeated immobilization can cause the disruption or degeneration of ovarian function,indicating that rats with stress-induced ovarian dysfunction is an appropriate animal model for testing protective effects of agents against aging and for the diseases related to ovarian dysfunction.