1.Determination of tauroursodeoxycholic acid in compound bile capsule by HPLC.
Fei CHEN ; Hai-Lin LONG ; Hai-Min LEI ; Qiang LI
China Journal of Chinese Materia Medica 2014;39(5):838-840
OBJECTIVETo discriminate and determine of the artificial bear bile of the compound bile capsule.
METHODTaking the pharmacopoeia as reference, the artificial bear bile was discriminated and determined by HPLC.
RESULTThe compound bile capsule and the control sample had chromatographic peak at the same time from HPLC. The content of the artificial bear bile was above 10 mg per tablets.
CONCLUSIONThe artificial bear bile of compound bile capsules can be discriminated effectively and determined accurately by HPLC method.
Animals ; Bile ; chemistry ; Capsules ; analysis ; Chromatography, High Pressure Liquid ; methods ; Discriminant Analysis ; Medicine, Chinese Traditional ; Taurochenodeoxycholic Acid ; analysis ; Ursidae
2.Lead compound optimization strategy (2)--structure optimization strategy for reducing toxicity risks in drug design.
Hai-Long LIU ; Jiang WANG ; Dai-Zong LIN ; Hong LIU
Acta Pharmaceutica Sinica 2014;49(1):1-15
Idiosyncratic adverse drug reactions (IDR) induce severe medical complications or even death in patients. Alert structure in drugs can be metabolized as reactive metabolite (RM) in the bodies, which is one of the major factors to induce IDR. Structure modification and avoidance of alert structure in the drug candidates is an efficient method for reducing toxicity risks in drug design. This review briefly summarized the recent development of the methodologies for structure optimization strategy to reduce the toxicity risks of drug candidates. These methods include blocking metabolic site, altering metabolic pathway, reducing activity, bioisosterism, and prodrug.
Binding Sites
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Cytochrome P-450 Enzyme System
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metabolism
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Drug Design
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Drug Discovery
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methods
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Drug Recalls
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Drug-Related Side Effects and Adverse Reactions
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prevention & control
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Humans
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Structure-Activity Relationship
4.Determination of benzyl glucosinolate in Lepidium meyenii from different regions by HPLC.
Lin TANG ; Hong-jun YIN ; Cong-cong SI ; Xiao-yan HU ; Zheng-hai LONG
China Journal of Chinese Materia Medica 2015;40(23):4541-4544
The content of benzyl isothiocyanate (BITC) which as the enzymatic hydrolysis product of benzyl glucosinolate through thioglucosidase was determined by HPLC. The content of benzyl isothiocyanate (BITC) which as the enzymatic hydrolysis product of benzyl glucosinolate through thioglucosidase was determined by HPLC. The chromatography condition was as follows: Kaseisorb LC ODS 2000 (4.6 mm x 150 mm, 5 min) column with the mobile phase of acetonitrile(A)-water( B) under gradient elution (0-5 min, 3%-8% A; 5-9 min, 8%-48% A; 9-23 min, 48%-62% A; 23-28 min, 62%-99% A); the flow rate was 1.0 mL x min(-1) with 10 microL injection volume; detection wavelength was 246 nm and temperature of column was 40 degrees C. The content of benzyl glucosinolate was in the range of 10.76-17.91 g x L(-1). The method is simple, accurate and good reproducibility which can be used for the determination of benzyl glucosinolate in Lepidium meyenii, effectively.
Chromatography, High Pressure Liquid
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methods
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Glucosinolates
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analysis
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Lepidium
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chemistry
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Plant Extracts
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analysis
6.Clone the Alcohol Dehydrogenase and L-lactate Dehydrogenase of Bio-hydrogen Producing Bacteria Ethanoligenens harbinense B49 and Its Sequence Analysis
Hai-Long LIN ; Nan-Qi REN ; Guo-Xiang ZHENG ; Kun ZHANG ;
Microbiology 1992;0(05):-
Designed the degenerate primers of alcohol dehydeogenase and L-lactate dehydrogenase to aug- ment Ethanoligenens harbinense B49 genomic DNA, and obtained about 780 bp and 610 bp PCR product respectively. Augmented flank sequences of the two PCR fragments with the Cassette PCR method. Similar- ity alignment showed that the products of the cloned DNA were very high similar to those of alcohol dehy- drogenase genes and L-lactate dehydrogenase genes respectively. One of the two sequences was 1902 bp long, and the ORF of adh was 1101 bp long and encoded 366 amino acids. Its putative molecular weight was about 39.71 kD, its calculational isoionic point was pH 5.93. The maximal identity and positive was 51% and 73% with Clostridium thermocellum ATCC 27405 adh. The other one was 2490 bp long, and the ORF of adh was 951 bp long and encoded 316 amino acids. Its putative molecular weight was 34.23 kD, its calcula-tional isoionic point was pH 6.09. The maximal identity and positive was 55% and 74% with Bacillus megaterium L-ldh. Successfully cloning these two genes would not only enrich the gene resources of L-lactate dehydrogenase and alcohol dehydrogenase genes, but also give the scientific warrant for the meta- bolic engineering research and the construction of the gene-engineering bacteria.
7.The Discussion on the General Microbiology Course Arrangement for Pharmacy Specialty in Higher Vocational Colleges
Zheng-Hai LONG ; Hui JIN ; Bei-Bei HUANG ; Shuang-Lin ZHOU ; Dan-Ling YE ;
Microbiology 2008;0(12):-
Based on the teaching fact and feature of pharmacy specialty. In this article, curriculum location of general microbiology about object, character, function, content design for the higher vocational colleges were disscused. The result would provide some gist to reform teaching methods for microbiology course.
8.Correlation between Plasma Orexin A and Energy Intake in Obese Children
hua, WU ; hai-mei, YANG ; ji-tao, LIN ; xiang-rong, LI ; yu, LONG
Journal of Applied Clinical Pediatrics 2004;0(08):-
Objective To explore the change of plasma orexin A concentration and the correlation between plasma orexin A concentration and energy intake in obese children.Methods Fasting plasma orexin A concentrations,boaly mass index(BMI) and energy intake were measured in 48 obese children(obese group) and 48 healthy children(healthy control group),and these indexes were compared,the correlation between plasma orexin A concentration and BMI,energy intake were analyzed.Results 1.The plasma orexin A concentration in obese group was significantly lower than that in healthy control group(F=5.632 P=0.008).2.In obsess group,there were negative correlation between plasma orexin A concentration and BMI(r=-0.478 P=0.012),positive correlation between plasma orexin A concentration and total energy intake(r=0.503 P=0.007),fat intake(r=0.659 P=0.006) and protein intake(r=0.381 P=0.026),and there was negative correlation between plasma orexin A concentration and carbohydrate(r=-0.316 P=0.022).3.In healthy control group,there were negative correlation between plasma orexin A concentration and BMI(r=-0.491 P=0.018),positive correlation between plasma orexin A concentration and total energy intake(r=0.512 P=0.009),fat intake(r=0.406 P=0.005),protein intake(r=0.313 P=0.020),and carbohydrate(r=0.432 P=0.025).Conclusions Orexin A may be involved in regulation of energy metabolism in obese children,and the interaction between plasma orexin A and energy intake might be different in different nutritional status in children.
9.Common clinical factor analysis of heart rate variability in patients with cerebral infarction
Chinese Journal of Neuromedicine 2010;9(2):176-180
Objective To explore the characteristics of heart rate variability (HRV) and its impact factors in patients with cerebral infarction and provide evidence for treatment of cerebral infarction. Methods The clinical data of 190 patients with cerebral infarction were analyzed. These patients admitted to our hospital from May 2007 to June 2009 and CT or MRI confirmed their diagnoses. Fifty healthy subjects in the same period were chosen as control group. The 24 h HRV analysis technology was employed to compare the activity impairment of their cardiac autonomic nervous. According to age, gender, type of infarction, infarct location, severity and prognosis, patients with cerebral infarction were divided into several subgroups; the impact of these factors on patients with HRV was analyzed. Results HRV indexes in patients with cerebral infarction were lower than those in the control group (P<0.05). Patients that were older than or equal to 60-year-old showed lower HRV indexes as compared with the patients that were younger than 60-year-old (P<0.05). Except for the temporal frequency, the other HRV indexes satisfied the following conditions: lower HRV indexes in female were showed as compared with those in male (P<0.05); the HRV indexes in patients with lacunar infarction were significantly higher than those in patients with atherosclerotic cerebral infarction or cerebral embolism (P<0.05); patients with right insula infarction showed significantly lower time domain HRV indexes than patients with other position infarction (P<0.05); HRV indexes were low in patients with low GCS scores. The lowest HRV indexes were noted in patients with the incidence of death, followed by patients with improvement and cured patients. Conclusion Autonomic nervous system in patients with cerebral infarction is overbalanced. Early dynamic monitoring of HRV can determine the extent of brain injury and the evolution of the disease, contributing to early identification of high risk patients and guiding the clinical treatment.