1.Research progress of relationship between myelodysplastic syndromes and iron overload
Cancer Research and Clinic 2014;26(3):209-211
Myelodysplastic syndromes (MDS) is a highly heterogeneous group of clonal disease,which is derived from hematopoietic.stem cells.Anemia is the main manifestation of most MDS patients and transfusion is required in about 90 % patients.Long-term blood transfusions can lead to iron overload (IOL).IOL can damage the iron balance,and excess free iron can deposite in the heart,liver and other vital organs,resulting in structural damage and organ dysfunction,which can deteriorate the prognosis,accelerate the transformation into acute myeloid leukemia,and increase the mortality.Iron chelation can improve the prognosis of patients with IOL,and prolong the overall survival and leukemia-free survival.
2.Guidelines investigation and technical considerations of virus safety during investigational new drug application of innovative monoclonal antibody products
Acta Pharmaceutica Sinica 2021;56(8):2308-2314
With the development of antibody manufacturing technology and improvement of new drug research in domestic industry, more innovative monoclonal antibody products submitted investigational new drug (IND) application. At the same time, monoclonal antibody products from abroad which have been approved marketing authorization and/or conducted clinical trials submitted IND applications in China. The National Medical Products Administration (NMPA) issued the "Guideline of Investigational New Drug Application" (No. 16, 2018) which emphasized the chemical, manufacturing, and control (CMC) regulatory, and dossier requirements in IND application, greatly promoted the application quality of innovative biological products. However, compared to the Food and Drug Administration (FDA) and European Medicines Agency (EMA), our particular guidelines are insufficient, such as guideline on virus safety evaluation of biotechnological investigational medicinal products. This review investigated the questions raised by sponsors from 2018 to 2020, including the end of production cell (EOPC) and/or unprocessed bulk (UPB) testing and virus removal or inactivation validation. Meanwhile, sponsors submitted different dossiers due to differences in understanding of stage requirements of guidelines from domestic and abroad. Based on the guidelines of virus safety from NMPA, FDA, and EMA, and the technical considerations, this review puts forward personal suggestions on the adventitious agents testing and virus removal or inactivation validation in manufacturing process, aim to ensure virus safety of innovative monoclonal antibody products in clinical trials.
3.Design and Realization of Off-label Drug Use Control System Based on B/S Structure
China Pharmacy 2015;(28):3896-3898
OBJECTIVE:To build the off-label drug use control system,and to realize automatic prompt for off-label drug use by system when physicians prescribed drugs. METHODS:The module and flow chart of off-label drug use control system were de-signed based on B/S structure. The drugs of the prescriptions were verified one by one in terms of drug indication,drug dosage, age and gender of patient,route of administration,etc. The system prompted automatically off-label drug use when drug use didn’t agree with preset value;at the same time,the management effect of the system was evaluated by taken the amount of attention about antibiotics medical orders as an example. RESULTS:At present,265 kinds of drugs were involved in the system designed by our hospital. Since the system was applied,the system had prompted more than 50 thousand items of off-label drug use prescrip-tions/medical orders,accounting for 0.3% of total. Among the types of off-label drug use,the most number of medical orders were over single dose(745 items),followed by extra-indication(706 items)and over daily dose(671 items). Within 3 months after sys-tem used,the attention numbers of antibiotics medical orders of over daily dose decreased month by month. CONCLUSIONS:Es-tablished off-label drug use control system of our hospital has a stable running and convenient manipulation,and contains powerful practicability. It can monitor off-label drug use of some drugs.
4.Protective effect of nitrates pharmacological postconditioning on ischemia-reperfusion injured myocar-di um
Na WU ; Dalin SONG ; Shanglang CAI
Chinese Journal of cardiovascular Rehabilitation Medicine 2015;24(5):540-543
Objective:To study protective effect of nitrates pharmacological postconditioning (PI‐PostC) on ischemia‐reperfusion (I/R) injured myocardium in rats .Methods :A total of 32 Wistar rats were randomly and equally divided into sham operation group ,I/R group ,ischemia postconditioning group (IPostC group) and PI‐PostC group .Myo‐cardial ischemic area ,infract size ,plasma level of cardiac troponin I (cTnI) and cell apoptotic index were measured and compared among all groups .Results:Compare with sham operation group ,there was significant rise in plasma cTnI level [ (6.39 ± 2.35)μg/L vs .(70.33 ± 6.94)μg/L vs .(41.19 ± 4.50)μg/L ,(37.47 ± 4.20)μg/L ,P<0.01 all] in I/R group ,IPostC group and PI‐PostC group ,and those of IPostC group and PI‐PostC group were significant‐ly lower than that of I/R group , P<0.01 both .Compared with I/R group ,there were significant reductions in my‐ocardial ischemic area [ (53.31 ± 3.87)% vs .(46.46 ± 2.13)% vs .(42.08 ± 4.84)% ] ,infarct size [ (52.19 ± 3.44)% vs .(41.02 ± 2.93 )% , (38.13 ± 2.05 )% ] and cell apoptotic index [ (26.92 ± 1.91 )% vs . (20.54 ± 3.05)% ,(19.49 ± 2.41)% ] in IPostC group and PI‐PostC group ,P<0.01 all .Compared with IPostC group ,ische‐mic area significantly reduced (P<0.05) in IP‐PostC group ,but there were no significant changes in infarct size , cTnI level and cell apoptotic index between IPostC group and IP‐PostC group , P>0.05. Conclusion:Nitrates phar‐macological postconditioning possesses the same protective effect on myocardial I/R injury as ischemia postcondition‐ing ,and it can reduce myocardial ischemic area more effectively .
5.Problems in information quality on medical and health websites in China
Lirong SONG ; Qun ZHANG ; Na QI
Chinese Journal of Medical Library and Information Science 2014;(9):1-6
After the types and characteristics of medical and health information websites in China were described , the problems existed on these websites and the reasons why they occurred were analyzed with some suggestions pro-posed for the development of medical and health information websites in China , such as controlling them by national policies and regulations, working out quality control standards, encouraging and supporting high level websites, es-tablishing needs-based medical and health resources database .
6.A phantom study of tumor contouring on PET imaging
Song, CHEN ; Xue-na, LI ; Ya-ming, LI ; Ya-fu, YIN ; Na, LI ; Chun-qi, HAN
Chinese Journal of Nuclear Medicine 2010;30(6):419-423
Objective To explore an algorithm to define the threshold value for tumor contouring on 18F-fluorodexyglucose (FDG) PET imaging. Methods A National Electrical Manufacturing Association (NEMA)NU 2 1994 PET phantom with 5 spheres of different diameters were filled with 18F-FDG. Seven different sphere-to-background ratios were obtained and the phantom was scanned by Discovery LS 4. For each sphere-to-background ratio, the maximum standardized uptake value ( SUVmax ) of each sphere, the SUV of the border of each sphere ( SUVborder ), the mean SUV of a 1 cm region of background (SUVbg) and the diameter (D) of each sphere were measured. SPSS 13.0 software was used for curve fitting and regression analysis to obtain the threshold algorithm. The calculated thresholds were applied to delineate 29 pathologically confirmed lung cancer lesions on PET images and the obtained volumes were compared with the volumes contoured on CT images in lung window. Results The algorithm for defining contour threshold is TH% = 33.1% + 46.8% SUVbg/SUVmax + 13.9%/D ( r = 0.994) by phantom studies. For 29 lung cancer lesions, the average gross tumor volumes ( GTV ) delineated on PET and CT are ( 7.36 ± 1.62 ) ml and (8.31 ±2.05) ml, respectively (t = -1.26, P>0.05). Conclusion The proposed threshold algorithm for tumor contouring on PET image could provide comparable GTV with CT.
7.Effect of Yoga on Heart Rate Variability in Women with Metabolic Syndrome.
Ha Na KIM ; Jin A SEO ; Sang Wook SONG
Korean Journal of Health Promotion 2014;14(4):147-154
BACKGROUND: The purpose of this study was to investigate the correlation between yoga and autonomic nervous system in women with metabolic syndrome. METHODS: A randomized controlled study was performed in participants recruited from a public center for managing chronic diseases located in Gyeong-gi Province. The 39 women participants diagnosed with metabolic syndrome were randomly assigned to the 12-week yoga exercise group (n=22) or the wait-listed control group (n=17). Biochemical laboratory tests and heart rate variability were measured before and after the 12-week program. RESULTS: In post-menopausal women, the low frequency power of frequency domain significantly decreased in the yoga exercise group compared to the control group (P=0.07). On the time domain of heart rate variability and metabolic syndrome components, there were no significant differences between the groups. CONCLUSIONS: Sympathetic activity was decreased in post-menopausal women with metabolic syndrome who practiced yoga. Our results suggest that yoga might be beneficial in improving the autonomic nervous system in post-menopausal women with metabolic syndrome.
Autonomic Nervous System
;
Chronic Disease
;
Female
;
Heart Rate*
;
Humans
;
Yoga*
8.High-level amidoglycoside resistance in enterococcus.
Mee Na KIM ; Chik Hyun PAI ; Jae Hoon SONG
Korean Journal of Clinical Pathology 1992;12(3):355-367
No abstract available.
Enterococcus*
9.High-level amidoglycoside resistance in enterococcus.
Mee Na KIM ; Chik Hyun PAI ; Jae Hoon SONG
Korean Journal of Clinical Pathology 1992;12(3):355-367
No abstract available.
Enterococcus*
10.A Review of Treatments of Keloids with Intramarginal Surgical Excision and Postoperative Irradiation to Prevent Recurrences.
Na Young LEE ; Won Keun SONG ; Kyu Kwang WHANG
Annals of Dermatology 2004;16(4):145-152
No abstract available.
Keloid*
;
Recurrence*