1.Gene markers for early detection of colorectal cancer
Peng LI ; Yun-Feng ZHU ;
Academic Journal of Second Military Medical University 2000;0(08):-
It has been indicated that the oncogene and anti-oncogene are closely related to the development and progression of cancer.With the development of molecular biology,detection of oncogene and anti-oncogene has become an important approach for clinical warning and diagnosing of cancer.Since the establishment of the molecular model of colon cancer by Fearon and Vogelstein in 1990,the genetics of colorectal cancer has gained major advances in early diagnosis.Early detection of related gene mutations is helpful for the early warning of colorectal cancer,especially for palients with hereditary cancer(the detection rate is fairly high).This review summarizes the progression of study on biomarkers of colorectal cancer.
2.Impact of storage conditions and time on herb of Lonicera macranthoides.
Peng MA ; Long-Yun LI ; Ying ZHANG
China Journal of Chinese Materia Medica 2014;39(6):981-991
To study the effect of different storage conditions and storage time on herb quality of Lonicera macranthoides, different packaging materials including vacuum plastic bags, plastic bags, woven bags, sealed with endometrial bags, paper bags, sack bags were selected for the study under different storage conditions including room temperature, 5 degrees C refrigerator, low temperature of - 20 degrees C refrigerator and desiccator. Twenty-four batches of samples were used for the study, and active ingredients were determined. The experimental results showed that the ingredients in each storage group changed with the storage time, storage conditions (storage environment, packaging). Under the same storage time, the storage environment (temperature, humidity) had effect on the stability of herb quality. Low temperature had less effect on herb quality. The effect of packaging on herb quality was as following: plastic vacuum packaging > woven with endometrial sealed packaging > plastic bag > woven bag > sack bags > paper bags. Under the same storage conditions, with the increase of storage time, caffeic acid content increased slowly, and other five ingredients content decreased gradually. Storage time affected significantly on the intrinsic quality (chemical composition) and appearance of herb. It is suggested that low temperature (5 degrees C), dark and sealed storage are suitable for storage of L. macranthoides herb, the storage time should be not more than 24 months.
Desiccation
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Drug Packaging
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Drug Storage
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methods
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Drugs, Chinese Herbal
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chemistry
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Lonicera
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chemistry
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Organic Chemicals
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analysis
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Quality Control
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Time Factors
3.Extended lymph node dissection for pancreatic head carcinoma: controversy and update
Yun JIN ; Jiangtao LI ; Shuyou PENG
Chinese Journal of Hepatobiliary Surgery 2017;23(6):423-425
Lymph node dissection was the key procedure of pancreatic surgery.The majority of guidelines indicated that extended lymph node dissection was helpless for improving survival rate.However,there were still quite a few researches which demonstrated that the extended dissection was a valuable procedure.It was still a controversial topic considering lymph node dissection.To review the shortcomings of previous randomized controlled trials (RCT),this article combined the experience of new techniques in pancreatic surgery,which are developing rapidly in recent years,and our theory and practice of radical resection of retroperitoneal lipo-lymphatic layer (RRRLLL).Therefore,the controversy and update of extended lymph node dissection for pancreatic head carcinoma were discussed,which could provide references for standardizing the treatment of extended lymph node dissection in clinical practice.
4.Diagnosis and Treatment of 6 Children with Anomalous Origin of the Left Coronary Artery from the Pulmonary Artery
hui, LIU ; xiao-feng, LI ; yun, PENG ; fang-yun, WANG
Journal of Applied Clinical Pediatrics 2006;0(19):-
Objective To analyze diagnostic experience of children with anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) and assess its surgical results.Methods Six children with ALCAPA had been diagnosed in our hospital from Mar. 2006 to Oct.2007 aged from 6 months to 10 years old(median 43.5 months).The medical data included common clinical presentations,the findings of electrocardiogram(ECG),the echocardiogram,ECG-gated 64-slice computed tomography,the digital subtraction angiogram (DSA),surgical records and the outcome.Results Diaphoresis,fantod,breathlessness and difficult feeding were commonly presented in 5 cases ALCAPA and the 5 children presented with left ventricular failure in infancy.The predominant ECG findings were Q waves and ST segment changes in the anterolateral chest leads in 4 cases,ST changes in 1 case,and normal ECG in 1 case.Cross-sectional echocardiography showed dilated left ventricles with poor contractility in 4 cases,medium mitral regurgitation in 2 cases and severe mitral regurgitation in 2 cases,aneurysmal dilatation of the right coronary artery(RCA) in 2 cases.CT and DSA examinations showed characteristic changes in these children.The surgical reestablishment of a two-coronary system was performed in 5 cases,direct reimplantation in 2 cases and creation of an autologous extrapulmonary tunnel in 3 cases.Simultaneous mitral annuloplasty was performed in 2 cases.After operation,the symptoms of 5 cases were all improved and none died.Conclusions Understanding the clinical manifestations and lab findings of ALCAPA is helpful to making an early diagnosis of ALCAPA.Early surgical treatment can improve the patients′ outcome.
8.Studies on sLe~(a/x) and Hematogenous Metastasis of Cancer
Yun-Li PENG ; Jing LI ; Mei-Yu GENG ;
China Biotechnology 2006;0(06):-
The expression of sLea/x which correlates with conventional histopathologic parameters serves as a useful indicator for the prognosis of metastatic disease. The bindings between sLea/x and their common ligand E-selectin initiate hematogenous metastasis of cancer. Certain bioactive conformation is crucial for the interaction between sLea/x and their ligands. Thus, a new class of compounds that mimic the structures of sLea/x can potently inhibit not only their functional bindings to selectins, but also the metastasis of cancer. This review is mainly on the sLea/x molecular structure,biosynthesis,distribution, especially the relationship between sLea/x and hematogenous metastasis of cancer and the design of drugs that mimic the structures of sLea/x.
9.To optimize the concentrate process ofDanshen injection by nanofiltration technique
Cunyu LI ; Yun MA ; Tao CHEN ; Hongyang LI ; Guoping PENG
International Journal of Traditional Chinese Medicine 2016;38(6):543-545
Objective To optimize the concentrate process ofDanshen injection.Methods The concentration changes of Salvianic acid A sodium, Protocatechuic aldehyde and Salvianolic acid B were selected as indexes to compare mospheric concentrate, vacuum concentrate, nanofiltration concentrate and nanofiltration-vacuum coupling concentrate methods with HPLC. Results Phenolic acid composition changed when atmospheric and vacuum concentrate method were used. Retention rate of three phenolic acids were over 93% after nanofiltration concentration, but the concentration efficiency was limited by solution viscosity. Nanofiltration-vacuum coupling concentrate methods could solve the above problems, meanwhile, retention rate of three phenolic acids were over 91%.Conclusions Nanofiltration technology takes advantage in medicine extraction concentrate with heat sensitive ingredients, and its application prospect in traditional Chinese medicine pharmaceutical industry would be broad.
10.Effects of Coix seed oil on human retinal capillary endothelial cells proliferation and VEGF expression in high glucose environment
Min, LI ; Yun-Sheng, ZHANG ; Fang, LI ; Hui-Can, PENG
International Eye Science 2014;(12):2147-2150
AlM: To study the effects of different concentrations of Coix seed oil on human retinal capillary endothelial cells ( HRCECs ) proliferation and vascular endothelial growth factor ( VEGF) expression in high glucose environment.
METHODS: HRCECs extracted from human fresher eyeball and cultured in vitro, and ultimately used in the experiment were the growth of 3rd ~ 4th cells, the experimental were divided into blank control group, low glucose control group, high glucose control group, high glucose + ( 50ü L/mL, 100ü L/mL, 200ü L/mL ) different concentrations Coix seed oil group. Detecting the multiplication of HRCECs by MTT, the immunocytochemical method was employed to detect the each group HRCECs of VEGF expression.
RESULTS:MTT assay results showed that: different concentrations of coix seed oil acted at HRCECs for 48h, inhibition of cell proliferation was significant difference compared with high glucose control group (P<0. 05). Within 48h showed concentration dependence. There was no statistical difference between the low glucose group and high glucose control group (P>0. 05). lmmunocytochemical assay showed that:50ü L/mL, 100ü L/mL, 200ü L/mL Coix seed oil acted at HRCECs 48h, the expression of VEGF decreased significantly compared with the high glucose control group ( P< 0. 05 ), and in a dose- dependent manner. However, in high glucose control group, the expression of VEGF was obvious higher than that of low glucose control group (P<0. 05).
CONCLUSlON:Coix seed oil can inhibit the HRCECs proliferation and suppress the VEGF expression in high glucose environment.