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Su XL, Jiang ZN, Guo LQ, Mao J, Wang X. [Colorectal cap polyposis: report of a case]. Zhonghua Bing Li Xue Za Zhi 2023; 52:515-517. [PMID: 37106299 DOI: 10.3760/cma.j.cn112151-20221012-00849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- X L Su
- Department of Pathology, Lanzhou University Second Hospital, Lanzhou 730030, China
| | - Z N Jiang
- Department of Pathology, Sir Run Run Shao Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China
| | - L Q Guo
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou 730030, China
| | - J Mao
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou 730030, China
| | - X Wang
- Department of Gastroenterology, Lanzhou University Second Hospital, Lanzhou 730030, China
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Gao KJ, Yan ZL, Yu Y, Guo LQ, Hang C, Yang JB, Zhang MC. Port-site metastasis of unsuspected gallbladder carcinoma with ossification after laparoscopic cholecystectomy: A case report. World J Clin Cases 2020; 8:5729-5736. [PMID: 33344567 PMCID: PMC7716338 DOI: 10.12998/wjcc.v8.i22.5729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/23/2020] [Accepted: 10/01/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Unsuspected gallbladder carcinoma (UGC) refers to cholecystectomy due to benign gallbladder disease, which is pathologically confirmed as gallbladder cancer during or after surgery. Port-site metastasis (PSM) of UGC following laparoscopic cholecystectomy is rare, especially after several years.
CASE SUMMARY A 55-year-old man presenting with acute cholecystitis and gallstones was treated by laparoscopic cholecystectomy in July 2008. Histological analysis revealed unexpected papillary adenocarcinoma of the gallbladder with gallstones, which indicated that the tumor had spread to the muscular space (pT1b). Radical resection of gallbladder carcinoma was performed 10 d later. In January 2018, the patient was admitted to our hospital for a mass in the upper abdominal wall after surgery for gallbladder cancer 10 years ago. Laparoscopic exploration and complete resection of the abdominal wall tumor were successfully performed. Pathological diagnosis showed metastatic or invasive, moderately differentiated adenocarcinoma in fibrous tissue with massive ossification. Immuno-histochemistry and medical history were consistent with invasion or metastasis of gallbladder carcinoma. His general condition was well at follow-up of 31 mo. No recurrence was found by ultrasound and epigastric enhanced computed tomography.
CONCLUSION PSM of gallbladder cancer is often accompanied by peritoneal metastasis, which indicates poor prognosis. Once PSM occurs after surgery, laparoscopic exploration is recommended to rule out abdominal metastasis to avoid unnecessary surgery.
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Affiliation(s)
- Kai-Jun Gao
- Medical School of Ningbo University, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Zhi-Long Yan
- Department of Gastrointestinal Surgery, Ningbo First Hospital, Ningbo 315000, Zhejiang Province, China
| | - Yu Yu
- Department of Gastrointestinal Surgery, The Affiliated People's Hospital of Ningbo University, Ningbo 315100, Zhejiang Province, China
| | - Liang-Qi Guo
- Medical School of Ningbo University, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Chen Hang
- Medical School of Ningbo University, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Jia-Bin Yang
- Medical School of Ningbo University, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Mou-Cheng Zhang
- Department of Gastrointestinal Surgery, Ningbo First Hospital, Ningbo 315000, Zhejiang Province, China
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Du YJ, Li J, Wang HL, Du JY, Qu PF, Zhang R, Guo LQ, Yan H, Dang SN. [Epidemiological characteristics of serum vitamin B(12) and folate levels in women awaiting delivery]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1359-1364. [PMID: 32867450 DOI: 10.3760/cma.j.cn112338-20190927-00707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objectives: To analyze the epidemiological characteristics and levels of vitamin B(12) and folate as well as their relationship in women awaiting delivery, in Shaanxi province. Methods: Data were collected from healthy pregnant women who gave birth at six top hospitals in Shaanxi, from January 2014 to December 2016. Blood samples were taken prenatally to determine the levels of vitamin B(12) and folate. Quantile regression model was used to analyze the relationship between the levels of vitamin B(12) and folates in women awaiting delivery. Results: A total of 1 277 women awaiting delivery were included in this study. Among them, the median level of serum vitamin B(12) was 164.7 pg/ml, in women at late pregnancy, with the deficiency rate as 69.6%, while the median level of serum folate was 7.6 ng/ml, with the deficiency rate as 12.1%. 58.4% of these women presented simple vitamin B(12) deficiency and 0.9% with simple folate deficiency. Women living in rural areas showed lower levels of both vitamin B(12) and folate than the women from the urban areas. Both the levels of vitamin B(12) and folate increased with age but were significantly lower in women under the age of 25. Among those with or without folate deficiency, the average difference in the levels of vitamin B(12) was 37.62 pg/ml. Quantile regression models showed that the vitamin B(12) levels in women with folate deficiency were significantly lower than those without, despite the different levels of vitamin B(12). This difference appeared increasing along with the increase of the vitamin B(12) levels. Conclusions: Our data showed that both vitamin B(12) and folate were deficient in women awaiting delivery, in Shaanxi. We suggest that vitamin B(12) should also be added into the folic acid supplementation program, together with the reinforcement on health education program to improve the awareness of nutrient supplementation in rural and young women. Hopefully, these strategies could increase the levels of both vitamin B(12) and folate, in the province.
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Affiliation(s)
- Y J Du
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - J Li
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - H L Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - J Y Du
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - P F Qu
- Assisted Reproduction Center, Northwest Women's and Children's Hospital, Xi'an 710003, China
| | - R Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - L Q Guo
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - H Yan
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - S N Dang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
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Li MM, Guo LQ, Li SS, Zhang Q, Zhao DD, Zhang BY, Dang SN, Yan H. [Association between congenital heart disease and medication taken during pregnancy among women of childbearing age]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:1333-1338. [PMID: 30453433 DOI: 10.3760/cma.j.issn.0254-6450.2018.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the relationship between medication taken during pregnancy and congenital heart disease of the newborns. Methods: A large cross-sectional survey was conducted between August and November 2013. A questionnaire survey was conducted among the childbearing aged women, selected through multistage stratified random sampling in Shaanxi from 2010 to 2013. All of the childbearing aged women under study were in pregnancy and with definite pregnancy outcomes. Multivariable Poisson regression was conducted for data analyses. Results: A total of 28 680 cases were included in this study. The proportion of medication taken at any time during pregnancy was 16.0%, and the prevalence of congenital heart disease among the newborns was 67.9/10 000. After adjustment for factors as general demographic characteristic, history of heart disease and drug allergy and the situation of disease during pregnancy of these women, results from the multivariable Poisson regression showed that, factors as taking drugs (RR=1.95, 95%CI: 1.42- 2.68), cold medicine (RR=1.68, 95%CI: 1.07-2.64), antibiotics (RR=1.90, 95%CI: 1.25-2.90), salicylates (RR=5.01, 95%CI: 1.84-13.64) and antifungal drugs (RR=10.22, 95%CI: 3.25-32.19) during pregnancy were all related to congenital heart disease, and with the history of taking cold medicine (RR=1.90, 95%CI: 1.01-3.61), antibiotics (RR=2.18, 95%CI: 1.17-4.06), salicylates (RR=6.07, 95%CI: 1.45-25.41), antifungal drugs (RR=21.01, 95%CI: 4.17-105.87) and other drugs (RR=2.31, 95%CI: 1.19-4.47) during early pregnancy. These factors were with higher risks for congenital heart disease. Conclusion: Women of childbearing age who took cold medicine, antibiotics, salicylic acid drugs, antifungal drugs and other drugs during early pregnancy would increase the risks related to congenital heart diseases.
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Affiliation(s)
- M M Li
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
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Guo LQ, Zhao DD, Liu R, Wang HL, Qu PF, Zhang R, Mi BB, Yan H, Dang SN. [A propensity score-matched study on relationship between maternal respiratory infection in early pregnancy and gestational age]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:920-924. [PMID: 30060305 DOI: 10.3760/cma.j.issn.0254-6450.2018.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the association between maternal respiratory infection in early pregnancy and gestational age of single live birth. Methods: A face to face questionnaire survey was conducted among child bearing aged women in 30 counties (district) of Shaanxi province selected through stratified multistage sampling. Propensity score (PS) matched (1∶1) analysis was used to match participants with respiratory infections to those without respiratory infections. A multilevel linear model was used to investigate the association between respiratory infections and gestational age. Through the control of the confounders step by step, three models were established in this study: model 1 for the variable of respiratory infections before PS matching, model 2 was adjusted for variables in model 1 plus some other individual differences of mother and baby, and model 3 for the variable of respiratory infections after PS matching. Results: Of 28 848 child bearing aged women surveyed, 3 676 (12.74%) had respiratory infections in early pregnancy. After PS matching, 2 762 pairs were matched. Analysis with model 1 indicated that a decrease of 0.111 week (P<0.001) in gestational age was associated with a respiratory infection during the first trimester. Analysis with model 2 and model 3 indicated that a decrease of 0.058 week (P=0.025) and a decrease of 0.076 week (P=0.036) were associated with respiratory infection during the first trimester, respectively. Conclusion: The respiratory infection during the first trimester was associated with the decrease of the gestational age of newborn.
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Affiliation(s)
- L Q Guo
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - D D Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - R Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - H L Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - P F Qu
- Women and Children Health Research Center, Northwest Women's and Children's Hospital, Xi'an 710003, China
| | - R Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - B B Mi
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - H Yan
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - S N Dang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
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Guo LQ, Zhang Q, Zhao DD, Wang LL, Chen Y, Mi BB, Dang SN, Yan H. [Relationship between air pollution exposure during pregnancy and birth weight of term singleton live-birth newborns]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 38:1399-1403. [PMID: 29060988 DOI: 10.3760/cma.j.issn.0254-6450.2017.10.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: This study explored the association between air pollution exposure and birth weight by using the multilevel linear model, after controlling related meteorological factors and individual differences of both mothers and babies. Methods: Women of childbearing age who were pregnant in Xi'an from 2010 to 2013, were selected as objects of this study. Multistage random sampling method was used to select 4 631 subjects followed by a self-designed questionnaire survey. Data related to quality of air and meteorology were gathered from routine monitoring system. Gestational age and date of birth, together with the average levels of air pollution were calculated for each trimester on each mother, and then the impact of air pollution on birth weight was assessed. A multilevel linear model was employed to investigate the association between the levels of exposure to air pollution by birth weight. Confounding factors were under control. We established three models in this study: Model 1 which involving the variable of air pollution exposure. Model 2 was adjusted for variables in Model 1 plus some other individual differences of both mother and baby. Model 3 was adjusted for variables in Model 2 plus meteorological factors. Results: There were significant differences seen in birth weight within the subgroups of gender, gestational age, mother's reproductive age, maternal education, residential areas and family incomes (P<0.01) of the infants. However, there was no difference found in Model 1 (P>0.05). Data from Model 3 indicated that a decrease of 13.3 g(10.9 g in Model 2) and 6.6 g (5.9 g in Model 2) in birth weight that were associated with an increase of 10 μg/m(3) in the average level of NO(2) and PM(10) during the second trimester; A decrease of 13.7 g (9.8 g in Model 2) in birth weight was associated with an increase of 10 μg/m(3) in the average level of NO(2) during the third trimester. Conclusion: After controlling for meteorological factors, the levels of exposure to NO(2) and PM(10) during the second trimester and NO(2) during the third trimester were negatively associated with birth weight.
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Affiliation(s)
- L Q Guo
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Q Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - D D Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - L L Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Y Chen
- Medical Records Department, The First Hospital of Yulin, Yulin 718000, China
| | - B B Mi
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - S N Dang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - H Yan
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
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Abstract
A novel Bacillus subtilis KD1 strain was isolated and identified from healthy broilers, and its phylogenetic classification was subsequently analyzed. To evaluate its probiotic availability, its growth characteristics and tolerance for the gut environment were evaluated in vitro. The results suggest that B. subtilis KD1 is superior in secreting neutral protease and is highly tolerant of gastric acid and bile salt. In the logarithmic growth phase, the neutral protease reached a maximum of 1,369.3 U/mL. When all live bacteria had become spores in the broth, B. subtilis KD1 was freeze dried and fed to broilers at 10(9), 5 × 10(9), and 10(10) bacilli/kg of feed. The animal trial results suggest that the addition of the new strain significantly improved intestinal flora by increasing lactobacilli and reducing Escherichia coli (P < 0.05) as compared with the control; hence, B. subtilis KD1 is a promising probiotic organism in broilers.
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Affiliation(s)
- B Q Wu
- South China Agricultural University, Guangzhou, Guangdong Province, People's Republic of China
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8
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Liu CS, Carolina sañudo E, Hu M, Zhang Q, Guo LQ, Fang SM. A cobalt(II) coordination polymer with mixed 4-(5-mercapto-1H-tetrazol-1-yl)benzoate and 4,4′-bipyridine ligands: synthesis, crystal structure, and magnetic properties. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.514337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Chun-Sen Liu
- a Henan Provincial Key Laboratory of Surface and Interface Science , Zhengzhou University of Light Industry , Zhengzhou, Henan 450002, P.R. China
| | - E. Carolina sañudo
- b Institut de Nanociència i Nanotecnologia i Departament de Química Inorgànica , Universitat de Barcelona , Diagonal, 647, 08028 Barcelona, Spain
| | - Min Hu
- a Henan Provincial Key Laboratory of Surface and Interface Science , Zhengzhou University of Light Industry , Zhengzhou, Henan 450002, P.R. China
| | - Qiang Zhang
- a Henan Provincial Key Laboratory of Surface and Interface Science , Zhengzhou University of Light Industry , Zhengzhou, Henan 450002, P.R. China
| | - Liang-Qi Guo
- a Henan Provincial Key Laboratory of Surface and Interface Science , Zhengzhou University of Light Industry , Zhengzhou, Henan 450002, P.R. China
| | - Shao-Ming Fang
- a Henan Provincial Key Laboratory of Surface and Interface Science , Zhengzhou University of Light Industry , Zhengzhou, Henan 450002, P.R. China
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Han F, Liu Y, Guo LQ, Zeng XL, Liu ZM, Lin JF. Heterologous expression of the immunomodulatory protein gene from Ganoderma sinense in the basidiomycete Coprinopsis cinerea. J Appl Microbiol 2010; 109:1838-44. [PMID: 20659187 DOI: 10.1111/j.1365-2672.2010.04811.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS FIP-gsi, a fungal immunomodulatory protein found in Ganoderma sinense, has antitumour, anti-allergy and immunomodulatory activities and is regulated by the fip-gsi gene. In this study, we aimed to express the fip-gsi gene from G. sinense in Coprinopsis cinerea to increase yield of FIPs-gsi. METHODS AND RESULTS A fungal expression vector pBfip-gsi containing the gpd promoter from Agaricus bisporus and the fip-gsi gene from the G. sinense was constructed and transformed into C. cinerea. PCR and Southern blotting analysis verified the successful integration of the exogenous gene fip-gsi into the genome of C. cinerea. RT-PCR and Northern blotting analysis confirmed that the fip-gsi gene was transcribed in C. cinerea. The yield of the FIP-gsi protein reached 314mg kg(-1) fresh mycelia. The molecular weight of the FIP-gsi was 13kDa, and the FIP-gsi was capable of hemagglutinating mouse red blood cells, but no such activity was observed towards human red blood cells in vitro. CONCLUSIONS The fip-gsi from G. sinense has been successfully translated in C. cinerea, and the yield of bioactive FIP-gsi protein was high. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report using the C. cinerea for the heterologous expression of FIP-gsi protein and it might supply a basis for large-scale production of the protein.
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Affiliation(s)
- F Han
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China
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Hu M, Ma ST, Guo LQ, Zhou LM, Gao LJ, Fang SM, Liu CS. Cadmium(II) Complexes with 2,2′-Dithiodibenzoate Ligand: Syntheses, Crystal Structures, and Emission Properties. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.200900307] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Fang SM, Ma ST, Guo LQ, Zhang Q, Hu M, Zhou LM, Gao LJ, Liu CS. A photoluminescent 3D silver(I) polymer with mixed 2-naphthol-5-carboxylate and hexamethylenetetramine ligands, showing an unusual (3,4)-connected (6·7·8)2(4·6·7)2(4·7·8)2(72·8)2(62·7·83)(62·72·8·10) topology. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2009.10.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Liu CS, Sañudo EC, Hu M, Zhou LM, Guo LQ, Ma ST, Gao LJ, Fang SM. Metal–organic coordination polymers based on a flexible tetrahydrofuran-2,3,4,5-tetracarboxylate ligand: syntheses, crystal structures, and magnetic/photoluminescent properties. CrystEngComm 2010. [DOI: 10.1039/b912972n] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Liu CS, Hu M, Guo LQ. Bis(μ-6-hydroxynaphthalene-1-carboxylato)bis[(6-hydroxynaphthalene-1-carboxylato)(1,10-phenanthroline)cadmium(II)] tetrahydrate. Acta Crystallogr Sect E Struct Rep Online 2009; 65:m1432-3. [PMID: 21578166 PMCID: PMC2971052 DOI: 10.1107/s1600536809043475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Accepted: 10/21/2009] [Indexed: 12/03/2022]
Abstract
The title complex, [Cd2(C11H7O3)4(C12H8N2)2]·4H2O, has a centrosymmetric binuclear structure in which two CdII atoms are both six-coordinated and bridged by 6-hydroxynaphthalene-1-carboxylate ligands, with a Cd⋯Cd separation of 3.671 (1) Å. The remaining coordination sites are occupied by two N atoms of a 1,10-phenanthroline ligand and two O atoms of a 6-hydroxynaphthalene-1-carboxylate ligand. The crystal packing is stabilized by O—H⋯O hydrogen-bonding interactions.
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Liu CS, Ma ST, Guo LQ, Hu M. Cobalt(II) complexes of a pyridyl/benzimidazol-1-yl-based ligand: syntheses, crystal structures, and photoluminescent properties. TRANSIT METAL CHEM 2009. [DOI: 10.1007/s11243-009-9223-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hu M, Ma ST, Guo LQ, Fang SM. Poly[[diaqua-bis(μ(2)-4,4'-bipyridine)-manganese(II)] bis-[2-(2-carboxy-phenyl-di-sulfanyl)benzoate]]. Acta Crystallogr Sect E Struct Rep Online 2009; 65:m538-9. [PMID: 21583776 PMCID: PMC2977590 DOI: 10.1107/s1600536809013646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Accepted: 04/10/2009] [Indexed: 12/04/2022]
Abstract
The title complex, {[Mn(C(10)H(8)N(2))(2)(H(2)O)(2)](C(14)H(9)O(4)S(2))(2)}(n), contains an octa-hedrally coordinated Mn(II) cation and 2-(2-carboxy-phenyl-disulfan-yl)benzoate anions. The Mn(II) center is situated on a crystallographic center of inversion and is coordinated by four 4,4'-bipyridine (4,4'-bipy) ligands and two water mol-ecules. The 4,4'-bipy ligands act as bridging ligands, producing a fishing-net-like two-dimensional framework. In the crystal structure, this positively charged framework is charge balanced by 2-(2-carboxy-phenyl-disulfan-yl)benzoate anions that form a separate anionic two-dimensional framework via inter-molecular O-H⋯O hydrogen bonds and C-H⋯π stacking inter-actions. Additional inter-molecular O-H⋯O hydrogen bonds link the cationic and anionic frameworks to form the three-dimensional crystal structure.
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Affiliation(s)
- Min Hu
- Zhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science, Henan, Zhengzhou 450002, People’s Republic of China
| | - Song-Tao Ma
- Zhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science, Henan, Zhengzhou 450002, People’s Republic of China
| | - Liang-Qi Guo
- Zhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science, Henan, Zhengzhou 450002, People’s Republic of China
| | - Shao-Ming Fang
- Zhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science, Henan, Zhengzhou 450002, People’s Republic of China
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Hu M, Ma ST, Guo LQ, Fang SM. Diaqua-bis[5-(2-pyrid-yl)tetra-zolato-κN,N]iron(II). Acta Crystallogr Sect E Struct Rep Online 2009; 65:m382. [PMID: 21582333 PMCID: PMC2968821 DOI: 10.1107/s1600536809007892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2009] [Accepted: 03/04/2009] [Indexed: 11/10/2022]
Abstract
The title complex, [Fe(C6H4N5)2(H2O)2], was synthesized by the reaction of ferrous sulfate with 5-(2-pyridyl)-2H-tetrazole (HL). The FeII atom, located on a crystallographic center of inversion, is coordinated by four N-atom donors from two planar trans-related deprotonated L ligands and two O atoms from two axial water molecules in a distorted octahedral geometry. The FeII mononuclear units are further connected by intermolecular O—H⋯N and C—H⋯O hydrogen-bonding interactions, forming a three-dimensional framework.
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Affiliation(s)
- Min Hu
- Zhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface & Interface Science, Henan, Zhengzhou 450002, People's Republic of China
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Liu CS, Zhou LM, Guo LQ, Ma ST, Fang SM. catena-Poly[[dichloridomercury(II)]-μ-1-(2-pyridylmethyl)-1H-benzotriazole]: the effect of different metal centers on the self-assembly of coordination complexes. Acta Crystallogr C 2008; 64:m394-7. [DOI: 10.1107/s0108270108038146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2008] [Accepted: 11/16/2008] [Indexed: 11/10/2022] Open
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Hu M, Ma ST, Guo LQ, Sun GH, Fang SM. Bis[μ-2-(3-pyridylmeth-yl)-2H-benzo-triazole]bis-[nitratosilver(I)]. Acta Crystallogr Sect E Struct Rep Online 2008; 64:m1473-4. [PMID: 21580908 PMCID: PMC2959521 DOI: 10.1107/s160053680803479x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2008] [Accepted: 10/24/2008] [Indexed: 11/20/2022]
Abstract
In the title centrosymmetric binuclear AgI complex, [Ag2(NO3)2(C12H10N4)2], each AgI center is coordinated by one pyridine and one benzotriazole N-donor atom of two inversion-related 2-(3-pyridylmethyl)-2H-benzotriazole (L) ligands, and an O atom of a coordinated NO3− anion in a distorted T-shaped geometry. This forms a unique box-like cyclic dimer with an intramolecular non-bonding Ag⋯Ag separation of 6.327 (2) Å. Weak intermolecular Ag⋯O(nitrate) interactions [2.728 (4) and 2.646 (3) Å] link the binuclear units, forming a two-dimensional network parallel to (100). Intermolecular C—H⋯O hydrogen-bonding interactions, involving the L ligands and the coordinated NO3− anions, link the sheets, forming a three-dimensional framework.
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Affiliation(s)
- Min Hu
- Zhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface & Interface Science, Henan, Zhengzhou 450002, People's Republic of China
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Liu CS, Guo LQ, Ma ST, Hu M. Bis{mu-3-[3-(2-pyridyl)pyrazol-1-ylmethyl]pyridine}disilver(I) bis(trifluoromethanesulfonate): effect of counter-anions on the self-assembly of coordination complexes. Acta Crystallogr C 2008; 64:m308-10. [PMID: 18758009 DOI: 10.1107/s0108270108024189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Accepted: 07/29/2008] [Indexed: 11/10/2022] Open
Abstract
As part of a study on the effect of different counter-anions on the self-assembly of coordination complexes, a new dinuclear Ag(I) complex, [Ag(2)(C(14)H(12)N(4))(2)](CF(3)SO(3))(2), with the 3-[3-(2-pyridyl)pyrazol-1-ylmethyl]pyridine (L) ligand was obtained through the reaction of L with AgCF(3)SO(3). In this complex, each Ag(I) center in the centrosymmetric dinuclear complex cation is coordinated by two pyridine and one pyrazole N-atom donor of two inversion-related L ligands in a trigonal planar geometry. This forms a unique box-like cyclic dimer with an intramolecular nonbonding Ag...Ag separation of 6.379 (7) A. Weak Ag...CF(3)SO(3) and C-H...X (X = O and F) hydrogen-bonding interactions, together with pi-pi stacking interactions, link the complex cations along the [001] and [1\overline{1}0] directions, respectively, generating two different one-dimensional chains and then an overall two-dimensional network of the complex running parallel to the (110) plane. Comparison of the structural differences with previous findings suggests that the presence of different counter-anions plays an important role in the construction of such supramolecular frameworks.
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Affiliation(s)
- Chun-Sen Liu
- Zhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science, Henan, Zhengzhou 450002, People's Republic of China.
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20
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Liu CS, Guo LQ, Yan LF, Wang JJ. Tetrakis(μ-anthracene-9-carboxylato)-κ4O:O′;κ3O,O′:O′;κ3O:O,O′-bis[(anthracene-9-carboxylato-κ2O,O′)(1,10-phenanthroline-κ2N,N′)erbium(III)]: effects of a noncoordinating anthracene ligand ring system on the final structure of a coordination complex. Acta Crystallogr C 2008; 64:m292-5. [DOI: 10.1107/s0108270108019975] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2008] [Accepted: 06/30/2008] [Indexed: 11/10/2022] Open
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21
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Liu CS, Sun GH, Guo LQ. Dichlorido[1-(1-naphthyl-meth-yl)-3-(2-pyrid-yl)-1H-pyrazole-κN,N]palladium(II). Acta Crystallogr Sect E Struct Rep Online 2007; 64:m69. [PMID: 21200638 PMCID: PMC2914949 DOI: 10.1107/s1600536807062927] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Accepted: 11/24/2007] [Indexed: 11/10/2022]
Abstract
In the title compound, [PdCl(2)(C(19)H(15)N(3))], the Pd(II) centre is four-coordinated by two N-atom donors from one 1-[3-(2-pyrid-yl)pyrazol-1-ylmeth-yl]naphthalene (L) ligand and by two Cl atoms in a distorted square-planar coordination geometry. In the crystal structure, adjacent Pd(II) mononuclear units form inter-molecular C-H⋯π inter-actions involving the benzene and pyridine rings of different L ligands and π-π stacking inter-actions between the pyrazolyl-pyridine and naphthalene rings of neighbouring L ligands, with a centroid-centroid separation of 3.522 (1) Å.
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Guo LQ, Connelly MJ. All-optical AND gate with improved extinction ratio using signal induced nonlinearities in a bulk semiconductor optical amplifier. Opt Express 2006; 14:2938-2943. [PMID: 19516432 DOI: 10.1364/oe.14.002938] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
An all-optical AND gate based on optically induced nonlinear polarization rotation of a probe light in a bulk semiconductor optical amplifier is realized at a bit rate of 2.5Gbit/s. By operating the AND gate in an up and inverted wavelength conversion scheme, the extinction ratio is improved by 8dB compared with previously published work.
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Tao S, Guo LQ, Wang XJ, Liu WX, Ju TZ, Dawson R, Cao J, Xu FL, Li BG. Use of sequential ASE extraction to evaluate the bioavailability of DDT and its metabolites to wheat roots in soils with various organic carbon contents. Sci Total Environ 2004; 320:1-9. [PMID: 14987922 DOI: 10.1016/s0048-9697(03)00452-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2003] [Revised: 07/26/2003] [Accepted: 07/31/2003] [Indexed: 05/24/2023]
Abstract
An accelerated solvent extraction (ASE) procedure using water, n-hexane and a mixture of n-hexane and acetone as solvents in sequence was developed and tested to evaluate the bioavailability of DDT and its metabolites including p,p'-DDT, o,p'-DDT, p,p'-DDE, and p,p'-DDD (SigmaDDTs) to wheat uptake from soils characterized by varied organic carbon contents. Results indicated that the extractability of SigmaDDTs with water was enhanced considerably in the presence of water soluble organic carbon (WSOC), while the amount of SigmaDDTs extracted with n-hexane was negatively correlated to the content of water insoluble organic carbon (WIOC). The interaction between SigmaDDTs and WIOC also reduced the bioavailability of the pesticides to wheat roots during uptake. There was a good positive correlation between the amount of SigmaDDTs extracted by n-hexane and the amount of SigmaDDTs accumulated in wheat roots, suggesting some potential for the use of the n-hexane ASE-extracted fraction as an indicator of SigmaDDTs' bioavailability to plant uptake. As such, the three sequentially extracted fractions may be viewed as representing the mobile, bioavailable, and fixed pools of SigmaDDTs in the soil.
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Affiliation(s)
- S Tao
- Laboratory for Earth Surface Processes, College of Environmental Sciences, Peking University, Beijing 100871, PR China.
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Guo LQ, Taniguchi M, Chen QY, Baba K, Yamazoe Y. Inhibitory potential of herbal medicines on human cytochrome P450-mediated oxidation: properties of umbelliferous or citrus crude drugs and their relative prescriptions. Jpn J Pharmacol 2001; 85:399-408. [PMID: 11388644 DOI: 10.1254/jjp.85.399] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
To investigate the possible drug interaction with herbal medicine, hot water decoctions or 40% ethanol infusions of several Umbelliferous or Citrus crude drugs and their prescriptions were examined in vitro for their abilities to inhibit human cytochrome P450 3A (CYP3A). Addition of each decoction or infusion from Baizhi (Angelica dahurica and varieties), Qianghuo (Notopterygium incisum or N. forbesii), Duhuo (Angelica biserrata), Fangfeng (Saposhnikovia divaricata), Danggui (Angelicasinensis), Zhishi or Zhiqiao (Citrus aurantium) resulted in various degrees of human CYP3A inhibition as determined by microsomal testosterone 6beta-hydroxylation. The inhibitory potency was consistent with the abundance of the hydrophobic components for each sample. Experiments on the infusion of a Japanese Baizhi (BZ1) showed the major role of furanocoumarins on human CYP3A inhibition. Some of the crude drugs and a related prescription showed increased inhibition after the preincubation, suggesting the involvement of a mechanism-based inhibition. Some formulated prescriptions, however, showed intense inhibition with their hydrophobic fractions rather than with their hydrophobic fractions, suggesting that components other than furanocoumarins in herbal prescriptions may also cause CYP3A inhibition. These results indicate the necessity of intensive investigations on the possible drug interaction with traditional medicines.
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Affiliation(s)
- L Q Guo
- Division of Drug Metabolism and Molecular Toxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
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Guo LQ, Fukuda K, Ohta T, Yamazoe Y. Role of furanocoumarin derivatives on grapefruit juice-mediated inhibition of human CYP3A activity. Drug Metab Dispos 2000; 28:766-71. [PMID: 10859150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
With juices of grapefruit and related fruits, possible relationships between contents of six different furanocoumarins and extents of inhibition of microsomal CYP3A activity have been studied in vitro. Microsomal CYP3A-mediated testosterone 6beta-hydroxylation was inhibited by the addition of a fruit juice (2.5%, v/v) from eight different grapefruit sources, two sweeties, three pomelos, and one sour orange, whereas no clear inhibition was observed with two sweet orange juices. The inhibitory component in grapefruit juice resides mainly in the precipitate rather than in the supernatant after centrifugation. Higher amounts of (R)-6',7'-dihydroxybergamottin (DHB) were distributed in the supernatant, whereas GF-I-1, GF-I-2, GF-I-4, and the newly isolated GF-I-5 and GF-I-6 were detected predominantly in the precipitate. Mixing of five representative furanocoumarins at their detectable levels in grapefruit juice reproduced roughly the inhibitory potencies of grapefruit juice, but omission of any of the components resulted in decreased potencies. These results suggested that all the major furanocoumarins contributed to the CYP3A inhibitory properties of grapefruit juice. Furthermore, all six furanocoumarins showed stronger CYP3A inhibitory potencies after preincubation in the presence of NADPH, suggesting that both competitive and mechanism-based inhibition occur in a grapefruit juices-drug interaction.
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Affiliation(s)
- L Q Guo
- Division of Drug Metabolism and Molecular Toxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
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26
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Abstract
Five compounds including furanocoumarin monomers (bergamottin, 6', 7'-dihydroxybergamottin (DHB)), furanocoumarin dimers (4-¿¿6-hydroxy-71-¿(1-hydroxy-1-methyl)ethyl-4-methyl-6-(7-oxo-7H- furo¿3,2-g1benzopyran-4-yl)-4-hexenyl]oxy]-3,7-dimethyl- 2-octenyl]oxy]-7H-furo[3,2-g]¿1benzopyran-7-one (GF-I-1) and 4-¿¿6-hydroxy-7¿¿4-methyl-1-(1-methylethenyl)-6-(7-oxo-7H-furo¿3, 2-g1benzopyran-4-yl)-4-hexenylŏxy-3, 7-dimethyl-2-octenylŏxy-7H-furo¿3,2-g1benzopyran-7-one (GF-I-4)), and a sesquiterpene nootkatone have been isolated from grapefruit juice and screened for their inhibitory effects toward human cytochrome P450 (P450) forms using selective substrate probes. Addition of ethyl acetate extract of grapefruit juice into an incubation mixture resulted in decreased activities of CYP3A4, CYP1A2, CYP2C9, and CYP2D6. All four furanocoumarins clearly inhibited CYP3A4-catalyzed nifedipine oxidation in concentration- and time-dependent manners, suggesting that these compounds are mechanism-based inhibitors of CYP3A4. Of the furanocoumarins investigated, furanocoumarin dimers, GF-I-1 and GF-I-4, were the most potent inhibitors of CYP3A4. Inhibitor concentration required for half-maximal rate of inactivation (K(I)) values for bergamottin, DHB, GF-I-1, and GF-I-4 were calculated, respectively, as 40.00, 5. 56, 0.31, and 0.13 microM, whereas similar values were observed on their inactivation rate constant at infinite concentration of inhibitor (k(inact), 0.05-0.08 min(-1)). Apparent selectivity toward CYP3A4 does occur with the furanocoumarin dimers. In contrast, bergamottin showed rather stronger inhibitory effect on CYP1A2, CYP2C9, CYP2C19, and CYP2D6 than on CYP3A4. DHB inhibited CYP3A4 and CYP1A2 activities at nearly equivalent potencies. Among P450 forms investigated, CYP2E1 was the least sensitive to the inhibitory effect of furanocoumarin components. A sesquiterpene nootkatone has no significant effect on P450 activities investigated except for CYP2A6 and CYP2C19 (K(i) = 0.8 and 0.5 microM, respectively).
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Affiliation(s)
- W Tassaneeyakul
- Department of Pharmacology, KhonKaen University, KhonKaen, 40002, Thailand
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Guo LQ, Taniguchi M, Xiao YQ, Baba K, Ohta T, Yamazoe Y. Inhibitory effect of natural furanocoumarins on human microsomal cytochrome P450 3A activity. Jpn J Pharmacol 2000; 82:122-9. [PMID: 10877530 DOI: 10.1254/jjp.82.122] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
To investigate the possible drug interaction with herbal medicine, furanocoumarin derivatives isolated from several Umbelliferous crude drugs were examined for their inhibitory effects on a typical human drug metabolizing enzyme, cytochrome P450 3A (CYP3A). Most furanocoumarins tested at 0.1 mM reduced microsomal testosterone 6beta-hydroxylation as an index of CYP3A activity to less than 50% of the control. In particular, the dimer and trimer derivatives of furanocoumarins showed striking inhibition, whose potencies were similar to that of a typical CYP3A inhibitor, ketoconazole. Preincubation of dimer types of furanocoumarins increased suppression but not most of the monomer derivatives, suggesting that the inhibition on CYP3A activity was caused by at least plural mechanisms. These results raised the possibility that the furanocoumarin containing herbal medicines may alter pharmacokinetics of co-ingested drugs similar to the case with grapefruit juice.
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Affiliation(s)
- L Q Guo
- Division of Drug Metabolism and Molecular Toxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
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Lu JF, Cao XM, Liu ZH, Cao W, Guo LQ, Zhuo HT, Ling SS, Chen YL, Zhao Q, Wang WP, Li FQ. Genetic analysis of N-acetyltransferase polymorphism in a Chinese population. Zhongguo Yao Li Xue Bao 1998; 19:347-51. [PMID: 10375782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
AIM To study the genetic basis of N-acetylatransferase polymorphism in Chinese. METHODS Genotypes in 120 healthy Han volunteers from 19 provinces of China were assayed. The 3 common mutant alleles (M1, M2, M3) and one normal wild-type (WT) allele of the N-acetyltransferase (NAT2) gene were detected by allele-specific polymerase chain reaction technique. RESULTS The NAT2 allele frequencies in 120 Chinese (WT = 0.625, M1 = 0.0458, M2 = 0.188, M3 = 0.142) were different (P < 0.01). The NAT2 genotype distribution for all detected combinations of NAT2 alleles in 120 Chinese subjects was consisitent with Hardy-Weinberg equilibrium (chi 2 = 7.27, nu = 8, 0.7 > P > 0.5). Fifty subjects (41.7%) were homozygous wildtypes, 50 subjects (41.7%) were heterozygous mutants, and 20 subjects (16.7%) were homozygous mutants. CONCLUSION The lower frequency of mutant M1 allele compared with that of Caucasians explains the low frequency of slow acylators in Chinese.
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Affiliation(s)
- J F Lu
- Department of Clinical Pharmacology, Jinling Hospital, Nanjing, China.
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Guo LQ, Tan HS, Chen G. Pharmacokinetics and relative bioavailability of nimodipine capsules and tablets in 8 Chinese healthy men. Zhongguo Yao Li Xue Bao 1993; 14:295-7. [PMID: 8249618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A single oral dose of tablets or capsules of 239 mumol nimodipine was given to 8 healthy volunteers of Han nationality in a randomized crossover study. Plasma levels were determined with HPLC method. The plasma concentration-time curve fitted to a first order absorption, 1-compartment open model, and the T1/2K was around 2 h. Although the capsules could reach peak level faster, the bioavailability was not significantly different from that of the tablets.
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Affiliation(s)
- L Q Guo
- Department of Clinical Pharmacology, Jinling Hospital, Nanjing, China
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