1.Xenograft of microencapsulated human pancreatic islets to diabetic mice
Hong LAI ; Li CHEN ; Chuanlong WU ;
Chinese Journal of Current Advances in General Surgery 1998;0(01):-
Objective:To observe the efficacy of microcapsules to prolong islet xenografts survival in mice.Methods:Human fetal pancreatic islets were isolated from the embryo which was obtained from legal abortion(gestational age 16~24 weeks) with collagenase and enclosed in semipermeable alginate BaCl 2 capsules.Diabetic BALB/ C mice induced with streptozotocin were divided into 3 groups.Each group had 7 mice.Then transplantation was performed.Results:Transplantation of 1000?100 encapsulated fetal islets into the peritoneal cavities of 7 BALB/ C mice restord normalglycemia for 78.4?21.27 days without immunosuppression.The second group of 7 diabetic mice received an equal number of uncultured pancreatic fragments.These unprotected xenografts were functional for only 7.43?3.42 days,but high mortality occured.There was significant differences between the two groups(P
3.Studies on Pharmacokinetics and Bioavailability of Puerarin in Yufeng Ningxin Tablet in Mice
Yanhong WU ; Ziren SU ; Xiaoping LAI ; Hong YAO ; Ji LIN
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(04):-
Objective To evaluate the pharmacokinetic parameters and bioavailability of puerarin in Yufeng Ningxin tablets in mice by determining dose-time curve and by comparing with the pharmacokinetics of puerarin injection.Methods NIH mice were randomized into different groups. 6 %HClO4 was used to precipitate plasma protein and the plasma concentration of puerarin in mice was determined by HPLC.The PK solutions 2.0 program,a non-compartmental model software,was applied to calculate the pharmacokinetic parameters and bioavailability.Results The main pharmacokinetic parameters of puerarin injection by i.v.in mice were:t1/2=98.359 min,CL=35.548 mL?min-1,AUC(0-∞)=281.3 ?g?min?mL-1;the main pharmacokinetic parameters of puerarin in Yufeng Ningxin tablets by o.p.were:t1/2 =35.562 min,CL=898.685 mL?min-1,Cmax=9.3 ?g?mL-1,Tmax=30 min,AUC(0-∞)=222.5 ?g?min?mL-1 ,F(bioavailability value)=3.95 %comparing to puerarin injection.Conclusion As compared with puerarin injection,the absorptive content of puerarin in Yufeng Ningxin tablets is very poor and the bioavailability is also low,indicating that enhancement of bioavailability of Yufeng Ningxin tablets will be beneficial to the clinical application.
4.The adverse reaction of L-asparaginase and its prevention.
Yong-hong LAI ; Zi-liang WU ; Fu-xiong CHEN
Chinese Journal of Pediatrics 2005;43(7):533-534
Antineoplastic Agents
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administration & dosage
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adverse effects
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Asparaginase
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administration & dosage
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adverse effects
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Child
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Child, Preschool
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Combined Modality Therapy
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Dose-Response Relationship, Drug
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Drug Hypersensitivity
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prevention & control
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Female
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Humans
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Hyperglycemia
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chemically induced
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prevention & control
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Male
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Precursor Cell Lymphoblastic Leukemia-Lymphoma
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drug therapy
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Severity of Illness Index
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Time Factors
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Treatment Outcome
5.Phylogenetic analysis for Fritillaria hupehensis: evidence from ITS, rpl16 and matK sequences.
Hong-wu LAI ; Yao-dong QI ; Hai-tao LIU ; Jiu-shi LIU ; Ben-gang ZHANG
China Journal of Chinese Materia Medica 2014;39(17):3269-3273
The systematic position of Fritillaria hupehensis has been in dispute. Phylogentic analyses were conducted on sequences of ITS, rpl16, matK sequences for species of F. hupehensis and allies. Lilium davidii was designed as outgroup. The analyses were performed using MP and ML methods. Conclusions could be achieved as follow. The topologies of MP and ML are consistent. The samples of F. hepehensis from different places form a supported clade with a strong bootstrap. And then form a strongly supported clade with F. anhuiensis, F. monantha. The results suggests that although F. hupehensis has a closet relation with the two ones, it exists some difference.
DNA, Plant
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chemistry
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genetics
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DNA, Ribosomal Spacer
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genetics
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Endoribonucleases
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genetics
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Fritillaria
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classification
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genetics
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Molecular Sequence Data
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Nucleotidyltransferases
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genetics
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Phylogeny
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Plant Leaves
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genetics
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Ribosomal Proteins
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genetics
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Sequence Analysis, DNA
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Species Specificity
6.Analysis and Countermeasure for Complex Cases in Adoption Paternity Testing
He ZHANG ; Yanyu LAI ; Jiasheng WU ; Chunbing QU ; Chunhe ZHAO ; Hong YUAN ; Jialong YUAN ; Jie LI
Journal of Sun Yat-sen University(Medical Sciences) 2010;31(1):17-19,73
[Objective] To explore how to deal with the paternity test of complex adoption cases. [Method] Samples from 13 families, in which adoptive parents were suspected related to biological parents, were genotyped using "Identifder + Sinofder + Powerplex 16" combined system (D8S1179, D21S11, D7S820, CSFIPO, D3S1358, TH01, D13S317, D16S539, D2S1338, D19S433, VWA, TPOX, D18S51, D5S818, FGA, D6S1043, D12S391, PentaD, PentaE) followed by further statistical analysis. [Result] Among all 13 cases, 2 were completely accordance with the Mendel law, PI > 10 000. There found more than 3 inconsistent loci in 8 cases. And found 1~2 inconsistent loci in 3 cases, needed to test more STR loci until PI≥10 000. The half sibling index (HSI) was also calculated with ITO method. The adoptive parents of 2 cases were not excluded from a full sibling with biological parents. In addition, Y-STR loci were tested for 4 cases (father/son). Two adoptive fathers of them were not excluded from the paternal relationship with biological fathers. [Conclusion] The most (76.9%) of all (13) complex adoptive cases of paternity test could be drawn a definite conclusion with combined system of "Identifder + Sinefiler + Powerplexl6". Minority (23.1%) of them was not definite yet and needed testing more STIR loci. Meanwhile, we suggested adding Y-STR tests and providing HSI for reference.
7.Effects of infective necrosis on poor prognosis in acute pancreatitis
Bo LU ; Huadan XUE ; Yamin LAI ; Jiaming QIAN ; Hong YANG ; Dong WU
Chinese Journal of Digestion 2017;37(4):244-248
Objective To evaluate the effects of infective necrosis (IN) on prognosis in moderately severe or severe acute pancreatitis (AP).Methods According to the revision of Atlanta classification,from January 2001 to January 2015,admitted patients with moderately severe or severe AP were retrospectively analyzed.According to whether with the presence of persistent organ failure (POF) and / or IN,the patients were divided into four groups:group one with weither IN nor POF,group two with IN but without POF,group three with POF but without IN,group four with both IN and POF.The differences in disease severity and prognosis among groups were compared.Logistic regression and Cox proportional hazard regression model were used to analyze the effect of IN on prognosis.Results A total of 375 moderately severe or severe AP patients were enrolled.There were 211,43,90 and 31 patients in group one,two,three and four,respectively.A total of 121 (32.3%) patients with POF,74 (19.7%) patients with IN,and death in 63 (16.8%) patients.The mortality rate in patients with IN was 32.4% (24/74),and which was 13.0%(39/301) in patients without IN.The mortality rates of group one,two,three and four were 1.9%(4/211),11.6%(5/43),38.9%(35/90) and 61.3%(19/31),respectively;mortality rate was in a trend of increasing,and the difference was statistically significant (x2 =109.672,P<0.01).Both IN (OR=8.24,95%CI2.09 to 32.46) andPOF (OR=8.31,95% CI2.48 to 27.87)were independent risk factors of mortality of AP patients (both P<0.01).Both IN (OR=2.04,95 %CI 1.19 to 3.48,0.002) and POF (OR=5.25,95%CI 2.36 to 11.65) also were independent risk factors of shortened survival time of AP patients (both P<0.01).Conclusions IN is an independent risk factor of disease severity and poor prognosis in AP.The prognosis is the worst in AP patients with both POF and IN.
8.Quality standard of Fuke Yangkun Pill
Yuhong LAI ; Yin WU ; Yixin LI ; Yingna ZHANG ; Meihua HONG ; Xiaoling WAN
Chinese Traditional Patent Medicine 1992;0(08):-
AIM:To improve the quality standard of Fuke Yangkun Pill. METHODS: Fructus Viticis was(identified) by micrology,Radix Angelica sinensis,Rhizoma Chuanxiong,Rhizoma Cyperi,Radix Aucklandiae,Rhizoma Corydalis,Radix Rehmanniae,Radix Rehmanniae preparata,Radix Paeoniae alba,Radix et Rhizoma Glycyrrhizae,Fructus Amomi were identified by TLC,baicalin content was determined by HPLC. RESULTS: The TLC spots were fairly clear and distinguishable,the linear range of baicalin was within 3.28-131.2 ?g/mL.The average recovery was 100.4% with RSD 1.0%(n=6). CONCLUSION: The method is simple,and specific,and can be used for quality control of Fuke Yangkun Pill.
9.A Validated Tool for Psychiatric Comorbidity in the Patients With Functional Dyspepsia: Author's Reply.
Larry H LAI ; Ada WY TSE ; Justin CY WU
Journal of Neurogastroenterology and Motility 2010;16(3):339-339
No abstract available.
Comorbidity
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Humans
10.Hypoglycemic effect of polysaccharide-coated insulin liposomes after oral administration in mice.
Zheng-hong WU ; Qi-neng PING ; Jia-ming LAI ; Yi WEI
Acta Pharmaceutica Sinica 2003;38(2):138-142
AIMTo evaluate the hypoglycemic effect of chitosan-coated and sodium alginate-coated insulin liposomes after oral administration in mice.
METHODSInsulin-liposomes were prepared by reverse-phase evaporation. Chitosan and alginate coating was carried out by mixing liposomal suspension with chitosan and sodium alginate solutions, followed by incubation. The particle size and morphology of insulin-liposomes were determined using laser light scattering instrument and transmission electron microscopy (TEM). The entrapment efficiency was analyzed using HPLC and ultracentrifuge. The protection of insulin from peptic and tryptic digestion was studied with HPLC. The hypoglycemic effects of polysaccharide-coated insulin liposomes were investigated using the glucose oxidase method after oral administration in mice.
RESULTSThe particle size of uncoated, chitosan-coated and alginate-coated insulin-liposomes was (138 +/- 31) nm, (230 +/- 20) nm and (266 +/- 19) nm, respectively. All insulin-liposomes were of spherical or ellipsoidal shape. The entrapment efficiencies were 81.6%, 73.5% and 68.7%, respectively. Insulin was protected from tryptic digestion by chitosan-coated liposomes and protected from peptic digestion by alginate-coated liposomes. The hypoglycemic effects of insulin-liposomes, coated with 0.1% chitosan and 0.1% sodium alginate, were observed.
CONCLUSIONChitosan-coated and sodium alginate-coated liposomes were shown to reduce peptic or tryptic digestion on insulin, and enhance enteral absorption of insulin.
Administration, Oral ; Alginates ; Animals ; Blood Glucose ; metabolism ; Chitin ; analogs & derivatives ; chemistry ; Chitosan ; Delayed-Action Preparations ; Drug Carriers ; Drug Delivery Systems ; Glucuronic Acid ; Hexuronic Acids ; Hypoglycemic Agents ; administration & dosage ; pharmacology ; Insulin ; administration & dosage ; pharmacology ; Liposomes ; Male ; Mice ; Particle Size ; Random Allocation ; Technology, Pharmaceutical ; methods