1.Meta-Analysis on Clinical Study of Chinese and Western Medicine Treatment of Diabetic Cerebral Infarction
Yihui DENG ; Meiling XU ; Jinwen GE
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(02):-
Objective To summarize the published studies of diabetic cerebral infarction treated by integration of traditional and western medicine (ITWM) or pure western medicine and compare their clinical curative effects. Method The clinical study of ITWM for diabetic cerebral infarction were collected and seleted according to the standard. The effect of ITWM and only western medicine was compared, and Meta-analysis was made. Result 59 studies were included to analysis neurological deficit and the total efficiency. Meta-analysis revealed that the improvement of ITWM is better than pure western medicine treatment. Conclusion The existed limited evidences suggest that ITWM treatment of diabetic cerebral infarction can significantly improve neurological deficit and curative effect. More high-quality randomized, double-blind, placebo-controlled trials are needed to confirm the efficacy and safety of ITWM treatment of diabetic cerebral infarction.
2.Effect of polyethylene glycol-lipid derivatives on the stability of grafted liposomes.
Yang XU ; Li SHI ; Yihui DENG
Acta Pharmaceutica Sinica 2011;46(10):1178-86
It is reported that polyethylene glycol-lipid (PEG-lipid) derivatives increase liposomes stability, prolong the blood circulation of liposomes, enhance their tumor-targeting efficiency, and improve drug efficacy. Therefore, it is of great importance to investigate the influence of modified PEG-lipid derivatives on the physical, chemical, and biological characteristics of liposomes for the promotion of dealing with the existed problems, such as the accelerated blood clearance (ABC) phenomenon when repeated intravous injection at a certain time-interval, and developing novel targeted pharmaceutical preparations. In this review, the effects of modified PEG-lipid derivatives were summarized in many aspects. It indicats that the chemical bonds (amide, ether, ester, and disulfide) between PEG and lipid, as well as the species of lipids, such as the commonly used phosphatidylethanolamine, cholesterol, and diacylglycerol have substantial effects on the grafted liposomes stability in vitro and in vivo. Besides, the properties of lipids (the fatty acid chain length and saturation) and the groups (methoxy, carboxylic and amino) at the distal ends of the PEG chains were also considered to be important factors. In the end, the influence of the average molecular weight of PEG and the molar ratio of PEG-lipid derivatives in the total lipid were further focused.
3.Preliminary study for integrating DPRA with h-CLAT to predict skin sensitizers
Yihui KE ; Yu CHEN ; Shujun CHENG ; Jiating XU ; Weijun TAN
Acta Laboratorium Animalis Scientia Sinica 2016;24(6):611-617
Objective To establish a detection method integrating DPRA ( direct peptide reactivity assay) with h?CLAT ( human cell line activation test) to screen the skin sensitization potency of chemicals and plant extracts. Methods 12 chemicals and 7 plant extracts were chosen as the test substances. Firstly, the test substances were incubated together with two different peptides ( cysteine and lysine) respectively for reaction for 24 h. The peptide consumptions were analyzed by HPLC. Simultaneously, THP?1 cells were cultured in vitro and then exposed to different concentrations of test sub?stances for 24 h to examine the cell viability, cell surface markers CD54 and CD86 were assessed by flow cytometry. The predicting results were compared further between DPRA and h?CLAT. Results 12 chemicals were distinguished correctly by DPRA classified as 2 non?sensitizers and 10 sensitizers. The results of DPRA were in accordance with h?CLAT. Predic?ting the sensitization potency of plant extracts by DPRA showed that 6 plant extracts were determined as suspected sensiti?zers except for green tea extract. But using the method of h?CLAT, 4 plant extracts were examined as suspected sensitizers except for green tea extract, herba portulacae extract and ginseng fruit extract. The coherence of DPRA and h?CLAT was 0?57. Conclusion This detection method integrating DPRA with h?CLAT can predict single compound accurately. As for complex compound, it can achieve preliminary prediction and need other integrating methods to make a further identifica?tion.
4.Self-rated health measurement scale in health check-up
Shouqing HUANG ; Lianhua YIN ; Yihui XU ; Liuxin WU
Chinese Journal of Health Management 2014;8(6):403-405
Objective To investigate the application value of the self-rated health measurement scale (SRHMS) in health check-up.Method A total of 8 083 health check-up receivers frow Fujian Province underwent SRHMS self-assessment,and the results of the assessment were analyzed by Chi-square test.Result The results of the survey showed that the total prevalence rate of chronic disease was 57.8% top five were stomach/duodenum diseases (14.57%),hypertension (11.58%),mammary gland disease (8.04%),abnormal blood lipid (7.16%) and prostate disease (6.54%).The proportion of these five kinds of illness was 43.38%.A positive correlation between the prevalence rate of chronic disease and age was found.The difference of the prevalence rate of chronic diseases between each age group was statistically significant (x2=863.816,P=0.000).Those with family history of chronic diseases accounted for 69.27% and those with history of present illness accounted for 57.83% (4 674/8 083).Bodily pain,dietary preferences,refined grain intake,lack of exercise,and alcohol drinking was found in 75.03%,60.15%,54.84%,46.07% and 41.50% participants.Conclusion The SRHMS could reflect the chronic disease incidence and unhealthy daily habits.
5."PEG dilemma" for liposomes and its solving approaches.
Di ZHANG ; Huan XU ; Meina HU ; Yihui DENG
Acta Pharmaceutica Sinica 2015;50(3):252-60
Polyethylene glycol (PEG) is extensively used to increasing the in vivo and in vitro stability of liposomes. However, PEGylated liposomes also produce some negative effects with further research, such as low cellular uptake, poor "endosomal escape" of pH sensitive liposome (PSL) and accelerated blood clearance (ABC) phenomenon, and this situation is referred as the "PEG dilemma". "PEG dilemma" posed severe challenges for the targeted delivery of PEGylated liposomes-loaded anticancer drugs, effective intracellular release of PEGylated PSL-encapsulated gene and protein drugs, and repeated administration of PEGylated liposomes. Therefore, it is urgent to solve the "PEG dilemma". This review focused on the definition, classification of "PEG dilemma", and discussed several possible approaches to overcome "PEG dilemma".
6.Recent advances in the study of accelerated blood clearance phenomenon of PEGylated liposomes
Huan XU ; Kaiqian WANG ; Weiwei HUANG ; Yihui DENG ; Dawei CHEN
Acta Pharmaceutica Sinica 2010;45(6):677-83
It is generally believed that liposomes modified with polyethylene glycol (PEG) have no or lower immunogenicity. However, based on many recent literatures, when the PEGylated liposomes were repeatedly applied to the same animal, the immune responses occurred. The first injection of PEGylated liposomes resulted in a reduction in the circulation time and an increase in hepatic and splenic accumulation of the second dose of PEGylated liposomes in a time-interval, which was called "accelerated blood clearance (ABC)" phenomenon. Such immunogenicity of PEGylated liposomes presents a barrier in the research of liposomal formulations and their use in the clinics. This review focused on the definition, the method of verification, the development of the reason for ABC phenomenon, influencing factors of ABC phenomenon, and discussed if other PEGylated nanocarriers also induce ABC phenomenon.
7.Analysis of HA and NA Genes of Influenza A H1N1 Virus in Yunnan Province during 2009-2014.
Juan LI ; Xiaonan ZHAO ; Yihui CAO ; Deming NING ; Xiaoqing FU ; Wen XU
Chinese Journal of Virology 2015;31(6):674-678
To analyze influenza pathogen spectrum in Yunnan province during 2009-2014 years, and analyze HA and NA genes of influenza A H1N1. Analysis was made on the monitoring date of influenza cases in Yunnan province in recent 6 years, 23 strains of influenza virus of HA and NA gene was sequenced and analyzed by MEGA 5 software to construct phylogenetic tree. 4 times of influenza AH1N1 epidemic peak were monitored from 2009-2014 years in Yunnan Province, as the nucleic acid detection results of influenza A H1N1 accounted for 28.8% of the total. The sequencing result showed that HA and NA gene were divided into 3 groups, one was detected with H275Y mutation strains. Influenza A H1N1 is one of the important subtypes in Yunnan province and their genes have divided into three branches during the period of 2009-2014 years, the vast majority of influenza a H1N1 are still sensitive to neuraminidase inhibitors.
China
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epidemiology
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Hemagglutinin Glycoproteins, Influenza Virus
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genetics
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metabolism
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Humans
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Influenza A Virus, H1N1 Subtype
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classification
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enzymology
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genetics
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isolation & purification
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Influenza, Human
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epidemiology
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virology
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Molecular Sequence Data
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Mutation
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Neuraminidase
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genetics
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metabolism
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Phylogeny
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Viral Proteins
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genetics
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metabolism
8.Influence of Different Acupuncture Method on Points Transcutaneous CO2 Emission
Tao HUANG ; Ruihong WANG ; Weibo ZHANG ; Yuying TIAN ; Guangjun WANG ; Yihui XU ; Bin HAN ; Xin HUANG
Journal of Acupuncture and Tuina Science 2008;6(5):318-320
Objective: To observe the influence of transcutaneous CO2emission (TCE) at points on the meridian or beside the meridian after different stimulations like acupuncture De-qi, sham acupuncture, study the correlation between acupuncture De-qi and local energy metabolism through TCE. Methods: Twenty healthy volunteers (male 8, female 12, average age 29 years old) were selected. Before, during and after five different acupuncture Neignan (PC 6), the TCE was measured at Quze (PC 3), point A [at the lower one fourth of line between Tianquan (PC 2) and Quze (PC 3)], point B [at the middle of line between Ximen (PC 4) and Quze (PC 3)], point C (2 cm ulnar side point A) and point D (2 cm ulnar side point B) with a high sensitive C02 instrument (Frewil-Q.F., made in China). The measure results were compared. Results: The comparison on value of TCE before and after the acupuncture, in Sham acupuncture and shallow acupuncture groups, it increased in all five points; in De-qi acupuncture group, there are significant increase on point A, point B, and Quze (PC 3), it has statistic significance, but there are no significant increase on point C and D. After Ximen (PC 4) or Daling (PC 7) were pressed to block Neiguan (PC 6), the value of TCE on Quze (PC 3), point A and point B were decreased during acupuncture Neiguan (PC 6), and increased after the block was removed, but there was no significant difference. Conclusion: Sham acupuncture has also some effects on body, it can increase energy metabolism of local skin, it may be the reason that shallow acupuncture without qi amving can obtain clinical efficacy. The operation method of traditional qi arriving acupuncture can increase energy metabolism of relevant meridian skin, mechanical press can reduce this effect.
9.Phylogenetic Analysis of Influenza B Hemagglutinin Gene in Yunnan from 2009 to 2014
Yihui CAO ; Juan LI ; Xiaonan ZHAO ; Deming NING ; Chunrui LUO ; Wen XU
Journal of Kunming Medical University 2016;37(11):14-17
Objective To investigate the mutation of hemagglutinin gene and amino acid variation of influenza B.Methods Influenza B virus was isolated from throat swab samples in sentinel surveillance of Yunnan province from 2009 to 2014.HA1 gene sequence analysis was applied to determine 12 randomly-selected strains of influenza B virus.The results were analyzed,MEGA software was used to do homology comparison and HA gene phylogenetic tree was established.Results Differences on the serotype and genotype identification of influenza strains were found and it might be caused by inadequate gene mutation accumulation.Amino acid variations were found in 3 important regions of antigenic determinants in HA1 protein:ring 120,ring 150 and ring 160.The amino acid variation of position 131 in ring 120 was N131K,and in position 137 was N137H.Two strains had P187S mutation in position 187.Conclusion There are some important variations in the hemagglutinin gene of influenza B strains in Yunnan Province,with some variations being the same as vaccine strains and some being not.
10.Influence of Mechanical Pressure to Change of Transcutaneous CO2 Emission by Acupuncture
Ruihong WANG ; Tao HUANG ; Yuying TIAN ; Guangjun WANG ; Yihui XU ; Weibo ZHANG
Journal of Acupuncture and Tuina Science 2008;6(6):351-
Objective: In the authors' previous study, acupuncture had an effect along meridians. The effect ofacupuncture can be represented by local energy metabolism which can be expressed by transcutaneous CO2 emission (TCE). To study the transportation of the effect of acupuncture and the influence to the transportation when blocking the meridians, the following experiment was carried out. Methods: Twenty healthy volunteers (male 8, female 12, average age 29) were examined on pericardium meridian at points between Quze (PC 3) and Tianquan (PC 2) (Point a), between Ximen (PC 4) and Quze (PC 3) (Point b), two control points (c and d) beside a and b and Quze (PC 3). TCE was measured on these five points before, during and after acupuncturing Neiguan (PC 6) by a high sensitive CO2 instrument (Frewil-Q.F., made in China). Mechanical pressure of 1 kg (2 cm~ 1 cm area) was given on Ximen (PC 4) or Daling (PC 7) during the acupuncture and TCE were measured before acupuncture, during acupuncture and mechanical pressing, withdrawing acupuncture but keeping pressing and after withdrawing the pressure. Results: TCE increased significantly on point a, b and Quze (PC 3) during and after acupuncture without mechanical press. When mechanical press was given at Ximen (PC 4), no significantly increase was found on above three points during and after acupuncture. When pressing Daling (PC 7), there was still significant (P<0.05) increase at Quz~ (PC 3) and point during acupuncture and significant increase (P<0.05) at point b after acupuncuture while pressing was kept. Conclusion: Acupuncture can enhance the energy metabolism expressed by TCE along meridians and this effect can be eliminated by mechanical pressing along meridians on the way between acupuncture point and measured point.