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Liu W, Shi MQ, Ge YS, Wang PY, Wang X. Multisection spiral CT in the diagnosis of adhesive small bowel obstruction: the value of CT signs in strangulation. Clin Radiol 2020; 76:75.e5-75.e11. [PMID: 32859383 DOI: 10.1016/j.crad.2020.06.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 06/12/2020] [Indexed: 12/17/2022]
Affiliation(s)
- W Liu
- Department of Radiology, Yantai Affiliated Hospital of Binzhou Medical University, No 774 Jinbu Road, Yantai, 264100, PR China
| | - M Q Shi
- Department of Radiology, Yantai Affiliated Hospital of Binzhou Medical University, No 774 Jinbu Road, Yantai, 264100, PR China
| | - Y S Ge
- Department of Radiology, Yantai Affiliated Hospital of Binzhou Medical University, No 774 Jinbu Road, Yantai, 264100, PR China
| | - P Y Wang
- Department of Radiology, Yantai Affiliated Hospital of Binzhou Medical University, No 774 Jinbu Road, Yantai, 264100, PR China; Binzhou Medical University, No 346 Guanhai Road, 264003, Yantai, Shandong, PR China.
| | - X Wang
- Binzhou Medical University, No 346 Guanhai Road, 264003, Yantai, Shandong, PR China.
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Wang RD, Jia WD, Ge YS, Ma JL, Xu GL. [Influential factors for failure of enhanced recovery after surgery from hepatectomy for hepatocellular carcinoma and the establishment of risk prediction model]. Zhonghua Wai Ke Za Zhi 2018; 56:693-700. [PMID: 30157576 DOI: 10.3760/cma.j.issn.0529-5815.2018.09.010] [Citation(s) in RCA: 2] [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
Objective: To investigate the influential factors for failure of enhanced recovery after surgery(ERAS) from hepatectomy for hepatocellular carcinoma(HCC) patients and then to establish a risk prediction model. Methods: The relevant clinical data of 180 patients with HCC undergoing hepatectomy at Department of Hepatic Surgery, Affiliated Provincial Hospital, Anhui Medical University from January 2016 to June 2017 were analyzed retrospectively.There were 149 male patients and 31 female patients aging of (56.5±11.0)years(from 33 to 84 years old). The factors affecting postoperative failure of ERAS of HCC patients were identified by univariate and multivariate analyses, and then, all the obtained factors and their statistical values were used to establish the risk prediction model. Results: A total of 23 patients failed in the ERAS protocol(12.8%). The preoperative total bilirubin (TBIL), alanine aminotransferase(ALT) and amount of intraoperative bleeding were independent risk factors for failure of ERAS from hepatectomy(all P<0.05). The obtained risk prediction model was presented as follows: risk coefficient(R)=0.114×(TBIL)+ 0.082×(ALT)+ 0.008×(amount of intraoperative bleeding). At the cut of value of R=7.90, the area under the ROC curve of this model for predicting failure of ERAS was 0.866(95%CI: 0.788-0.945, P<0.01), with the sensitivity and specificity of 69.6% and 91.1%, respectively.External validation results indicated that the scoring system had good differential ability(area under the ROC curve=0.889, 95%CI: 0.811-0.967, P<0.01). Conclusions: Higher level of preoperative TBIL(>21 μmol/L) and ALT(>50 U/L) and the larger amount of intraoperative bleeding (more than 400 ml) are independent risk factors for failure of ERAS inpatients undergoing hepatectomy for HCC and the established prediction model may have certain value for risk assessment.
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Affiliation(s)
- R D Wang
- Department of Hepatic Surgery, Affiliated Provincial Hospital, Anhui Medical University, Anhui Key Laboratory of Hepatopancreatobiliary Surgery, Hefei 230001, China
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Ge YS, Han QQ, Duan W, Zhang JQ, Chen K, Wan JJ, Liu Y, Liu D. Discovery of Cdc25A Lead Inhibitors with a Novel Chemotype by Virtual Screening: Application of Pharmacophore Modeling Based on a Training Set with a Limited Number of Unique Components. ChemMedChem 2017; 12:438-447. [DOI: 10.1002/cmdc.201600644] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 02/14/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Yu-Shu Ge
- Collaborative Innovation Center of Chemistry for Life Sciences, School of Life Sciences; University of Sciences and Technology of China; Hefei 230027 P.R. China
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Qian-Qian Han
- Collaborative Innovation Center of Chemistry for Life Sciences, School of Life Sciences; University of Sciences and Technology of China; Hefei 230027 P.R. China
| | - Wenxiu Duan
- Collaborative Innovation Center of Chemistry for Life Sciences, School of Life Sciences; University of Sciences and Technology of China; Hefei 230027 P.R. China
| | - Jia-Qi Zhang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Kai Chen
- Collaborative Innovation Center of Chemistry for Life Sciences, School of Life Sciences; University of Sciences and Technology of China; Hefei 230027 P.R. China
| | - Jia-Jia Wan
- Collaborative Innovation Center of Chemistry for Life Sciences, School of Life Sciences; University of Sciences and Technology of China; Hefei 230027 P.R. China
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Dan Liu
- Collaborative Innovation Center of Chemistry for Life Sciences, School of Life Sciences; University of Sciences and Technology of China; Hefei 230027 P.R. China
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He H, Xu J, Cheng DY, Fu L, Ge YS, Jiang FL, Liu Y. Identification of Binding Modes for Amino Naphthalene 2-Cyanoacrylate (ANCA) Probes to Amyloid Fibrils from Molecular Dynamics Simulations. J Phys Chem B 2017; 121:1211-1221. [DOI: 10.1021/acs.jpcb.6b10460] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Huan He
- State
Key Laboratory of Virology, College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (MOE),
College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Juan Xu
- State
Key Laboratory of Virology, College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (MOE),
College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Dan-Yang Cheng
- State
Key Laboratory of Virology, College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (MOE),
College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Li Fu
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (MOE),
College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yu-Shu Ge
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (MOE),
College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Feng-Lei Jiang
- State
Key Laboratory of Virology, College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (MOE),
College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yi Liu
- State
Key Laboratory of Virology, College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (MOE),
College of Chemistry Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- School
of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
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Lai L, Jin JC, Xu ZQ, Ge YS, Jiang FL, Liu Y. Spectroscopic and Microscopic Studies on the Mechanism of Mitochondrial Toxicity Induced by CdTe QDs Modified with Different Ligands. J Membr Biol 2015; 248:727-40. [DOI: 10.1007/s00232-015-9785-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Accepted: 02/24/2015] [Indexed: 12/23/2022]
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6
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Ge YS, Jin C, Song Z, Zhang JQ, Jiang FL, Liu Y. Multi-spectroscopic analysis and molecular modeling on the interaction of curcumin and its derivatives with human serum albumin: a comparative study. Spectrochim Acta A Mol Biomol Spectrosc 2014; 124:265-76. [PMID: 24491667 DOI: 10.1016/j.saa.2014.01.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 01/01/2014] [Accepted: 01/03/2014] [Indexed: 05/15/2023]
Abstract
The comparative study about the interaction between curcumin and its derivatives (demothxycurcumin and bisdeoxycurcumin) with human serum albumin (HSA) has been carried out using multi-spectroscopic analysis and molecular modeling method. The characteristic of fluorescence quenching and the thermodynamic parameters have been studied by state emission fluorescence experiments under different temperatures with an interval of 6 K. Curcumin shows largest quenching constant and bisdeoxycurcumin shows the smallest at the temperature of 298 K. However, the quenching constant of curcumin drops quickly with the increase of temperature. Demothxycurcumin gives the largest quenching efficiency at the temperature of 310 K. An average distance of 6.7 nm for energy transfer has been determined based on förster resonance energy theory (FRET). The site competitive replacement experiments illustrate three compounds mainly binding on site I (Subdomain IIA) of the protein, and show tendency of binding on site II (Subdomain IIIA) with the removing of methoxyl groups. Circular dichroism spectra and Fourier transform infrared spectroscopy (FTIR) have been used to investigate the influence on protein secondary structure. Content of the α-helix increases at low concentrations of the compounds, while unfolding occurs at high concentrations. Docking simulation reveals possible mechanism for different quenching behavior and binding sites preferred by three compounds. The binding modes have effectively supported the conclusion of the experiments.
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Affiliation(s)
- Yu-Shu Ge
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education) & College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Cheng Jin
- Institution of Traditional Chinese Medicine of 302 Military Hospital, Beijing 100039, PR China
| | - Zhe Song
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education) & College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Jia-Qi Zhang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education) & College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Feng-Lei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education) & College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education) & College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China; College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432100, PR China.
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Xiang C, Li DW, Qi ZD, Jiang FL, Ge YS, Liu Y. Synthesis of F16 conjugated with 5-fluorouracil and biophysical investigation of its interaction with bovine serum albumin by a spectroscopic and molecular modeling approach. LUMINESCENCE 2012; 28:865-72. [PMID: 23161820 DOI: 10.1002/bio.2447] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 08/16/2012] [Accepted: 09/09/2012] [Indexed: 11/10/2022]
Abstract
5-Fluorouracil (5-FU) has been widely used as a chemotherapy agent in the treatment of many types of solid tumors. Investigation of its antimetabolites led to the development of an entire class of fluorinated pyrimidines. However, the toxicity profile associated with 5-FU is significant and includes diarrhea, mucositis, hand-foot syndrome and myelosuppression. In aiming at reducing of the side effects of 5-FU, we have designed and synthesized delocalized lipophilic cations (DLCs) as a vehicle for the delivery of 5-FU. DLCs accumulate selectively in the mitochondria of cancer cells because of the high mitochondrial transmembrane potential (ΔΨm). Many DLCs exhibited anti-cancer efficacy and were explored as potential anti-cancer drugs based on their selective accumulation in the mitochondria of cancer cells. F16, the DLC we used as a vehicle, is a small molecule that selectively inhibits tumor cell growth and dissipates mitochondrial membrane potential. The binding of the conjugate F16-5-FU to bovine serum albumin (BSA) was investigated using spectroscopic and molecular modeling approaches. Fluorescence quenching constants were determined using the Stern-Volmer equation to provide a measure of the binding affinity between F16-5-FU and BSA. The activation energy of the interaction between F16-5-FU and BSA was calculated and the unusually high value was discussed in terms of the special structural block indicated by the molecular modeling approach. Molecular modeling showed that F16-5-FU binds to human serum albumin in site II, which is consistent with the results of site-competitive replacement experiments. It is suggested that hydrophobic and polar forces played important roles in the binding reaction, in accordance with the results of thermodynamic experiments.
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Affiliation(s)
- Chen Xiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
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Lai L, Lin C, Xu ZQ, Han XL, Tian FF, Mei P, Li DW, Ge YS, Jiang FL, Zhang YZ, Liu Y. Spectroscopic studies on the interactions between CdTe quantum dots coated with different ligands and human serum albumin. Spectrochim Acta A Mol Biomol Spectrosc 2012; 97:366-376. [PMID: 22797377 DOI: 10.1016/j.saa.2012.06.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 06/10/2012] [Accepted: 06/16/2012] [Indexed: 06/01/2023]
Abstract
This paper investigates the interactions between human serum albumin (HSA) and CdTe quantum dots (QDs) with nearly identical hydrodynamic size, but capped with four different ligands (MPA, NAC, and GSH are negatively charged; CA is positively charged) under physiological conditions. The investigation was carried out using fluorescence spectroscopy, circular dichroism (CD) spectra, UV-vis spectroscopy, and dynamic light scattering (DLS). The results of fluorescence quenching and UV-vis absorption spectra experiments indicated the formation of the complex of HSA and negatively charged QDs (MPA-CdTe, NAC-CdTe, and GSH-CdTe), which was also reconfirmed by the increasing of the hydrodynamic radius of QDs. The K(a) values of the three negatively charged QDs are of the same order of magnitude, indicating that the interactions are related to the nanoparticle itself rather than the ligands. ΔH<0 and ΔS>0 implied that the electrostatic interactions play predominant roles in the adsorption process. Furthermore, it was also proven that QDs can induce the conformational changes of HSA from the CD spectra and the three-dimensional fluorescence spectra of HSA. However, our results demonstrate that the interaction mechanism between the positively charged QDs (CA-CdTe) and HSA is significantly different from negatively charged QDs. For CA-CdTe QDs, both the static and dynamic quenching occur within the investigated range of concentrations. According to the DLS results, some large-size agglomeration also emerged.
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Affiliation(s)
- Lu Lai
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University, Wuhan 430072, PR China
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Ge YS, Tai SX, Xu ZQ, Lai L, Tian FF, Li DW, Jiang FL, Liu Y, Gao ZN. Synthesis of three novel anionic gemini surfactants and comparative studies of their assemble behavior in the presence of bovine serum albumin. Langmuir 2012; 28:5913-5920. [PMID: 22424242 DOI: 10.1021/la204212s] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Three novel anionic sulfonate gemini surfactants, sodium 4,4'-(10,19-dioxo-9,11,18,20-tetraazaoctacosane-9,20-diyl) dibenzenesulfonate (Surfactant I), sodium 4,4'-(12,21-dioxo-11,13,20,22-tetraazadotriacontane-11,22-diyl) dibenzenesulfonate (Surfactant II), and sodium 4,4'-(14,23-dioxo-13,15,22,24-tetraazahezatriacontane-13,24-diyl) dibenzenesulfonate (Surfactant III), with different lengths of hydrophobic tail have been synthesized, and their assembly behavior in the presence of bovine serum albumin (BSA) has been studied using spectral methods and molecular modeling methods at physiological pH and 298 K. Critical micelle concentrations (CMCs) of the three surfactants have been determined by surface tension measurements. Despite the obvious decrease of CMC with the increase of tail length, fluorescence spectra have shown much closer CAC in the presence of BSA. Surfactant II shows the highest CAC of 3.19 × 10(-5) mol L(-1) compared with the other two. The polarity of the microenvironment in BSA-surfactant systems has been investigated using pyrene as the probe. In addition, far-UV CD spectra studied the change of the secondary structure content of BSA caused by the three surfactants. The features of the assembly behavior were discussed by three concentration regions. Surfactant II could unfold the protein much more efficiently than the other two surfactants at low concentration, but at high concentration, the change of the secondary structure and the formation of hydrophobic microenvironment show a direct relationship to the length of the hydrophobic tail with the increase of the surfactant concentration.
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Affiliation(s)
- Yu-Shu Ge
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
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Han XL, Tian FF, Ge YS, Jiang FL, Lai L, Li DW, Yu QL, Wang J, Lin C, Liu Y. Spectroscopic, structural and thermodynamic properties of chlorpyrifos bound to serum albumin: A comparative study between BSA and HSA. Journal of Photochemistry and Photobiology B: Biology 2012; 109:1-11. [DOI: 10.1016/j.jphotobiol.2011.12.010] [Citation(s) in RCA: 147] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2011] [Revised: 12/12/2011] [Accepted: 12/13/2011] [Indexed: 11/24/2022]
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Tian FF, Li JH, Jiang FL, Han XL, Xiang C, Ge YS, Li LL, Liu Y. The adsorption of an anticancer hydrazone by protein: an unusual static quenching mechanism. RSC Adv 2012. [DOI: 10.1039/c1ra00521a] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Zhang MF, Xu ZQ, Ge YS, Jiang FL, Liu Y. Binding of fullerol to human serum albumin: spectroscopic and electrochemical approach. J Photochem Photobiol B 2011; 108:34-43. [PMID: 22244345 DOI: 10.1016/j.jphotobiol.2011.12.006] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 12/13/2011] [Accepted: 12/15/2011] [Indexed: 01/01/2023]
Abstract
The potential impact of human exposure to carbonaceous nanomaterials in the environment becomes a concerning issue. Here we report on the interaction of fullerol with human serum albumin (HSA) using spectroscopic and electrochemical methods. The water-soluble fullerene derivative (fullerol) was synthesized and characterized by IR, (1)H NMR, TG-DSC, XRD, HR-TEM, etc. The spectroscopic methods show that the fluorescence quenching of HSA by fullerol is the result of the formation of an HSA-fullerol complex. Binding parameters such as ΔG, ΔH and ΔS were calculated, and the quenching constant K(a) at different temperatures was determined using the modified Stern-Volmer equation. The electrochemical experiments further confirmed the conclusions. In addition, the influences of coexisting heavy metal ions have also been studied in the present system. The circular dichroism spectra (CD), 3D fluorescence spectra and FT-IR spectra results suggest that the secondary structure of HSA was changed by fullerol. Based on the site marker competitive experiments, we can predict the possible binding position of fullerol on the HSA was located at the site of sub domain II A. Furthermore, the distance r between donor (HSA) and acceptor (fullerol) was obtained according to the famous fluorescence resonance energy transfer (FRET) mechanism.
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Affiliation(s)
- Mei-Fang Zhang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, PR China
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Fu JX, Ge YS, Jiang FL, Sun XH, Liu Y, Liu Y. Spectroscopic and molecular modeling studies on the interaction between a fluorine-containing triazole derivative and human serum albumin. Biol Trace Elem Res 2011; 143:562-78. [PMID: 20827515 DOI: 10.1007/s12011-010-8835-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Accepted: 08/20/2010] [Indexed: 11/26/2022]
Abstract
The interaction between 4-(4-fluorobenzylideneamino)-5-propyl-4H-1,2,4-triazole-3-thiol (FBTZ) and human serum albumin (HSA) under simulative physiological conditions was investigated by fluorescence, UV-vis absorption and circular dichroism (CD) spectroscopy as well as molecular modeling method. Fluorescence spectroscopic data showed that the fluorescence quenching of HSA was a result of the formation of FBTZ-HSA complex. According to the modified Stern-Volmer equation, the effective quenching constants (K (a)) of FBTZ to HSA were obtained at three different temperatures. The enthalpy change (ΔH) and entropy change (ΔS) were calculated on the basis of van't Hoff equation, and the results showed that hydrogen-bonding and van der Waals forces were the dominant intermolecular forces to stabilize the complex. Site marker competitive replacement experiments demonstrated that the binding of FBTZ to HSA primarily took place in sub-domain IIA (Sudlow's site I). The binding distance (r) between FBTZ and the tryptophan residue of HSA was estimated according to the theory of fluorescence resonance energy transfer. The conformational investigation showed that the presence of FBTZ induced some changes of secondary structure of HSA. Molecular modeling study further confirmed the binding mode obtained by experimental study.
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Affiliation(s)
- Jia-Xin Fu
- Department of Chemical Engineering, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, People's Republic of China
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Fu J, Wang K, Ge Y, Jiang F, Sun X, Liu Y, Liu Y. Biophysical studies of the interaction between a triazole derivative and bovine serum albumin by multi-spectroscopic and molecular modeling methods. Sci China Chem 2011. [DOI: 10.1007/s11426-011-4260-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li DW, Tian FF, Ge YS, Ding XL, Li JH, Xu ZQ, Zhang MF, Han XL, Li R, Jiang FL, Liu Y. A novel pH-sensitive (±)-α-tocopherol–5-fluorouracil adduct with antioxidant and anticancer properties. Chem Commun (Camb) 2011; 47:10713-5. [DOI: 10.1039/c1cc13821a] [Citation(s) in RCA: 9] [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: 11/21/2022]
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Tian FF, Jiang FL, Han XL, Xiang C, Ge YS, Li JH, Zhang Y, Li R, Ding XL, Liu Y. Synthesis of a Novel Hydrazone Derivative and Biophysical Studies of Its Interactions with Bovine Serum Albumin by Spectroscopic, Electrochemical, and Molecular Docking Methods. J Phys Chem B 2010; 114:14842-53. [DOI: 10.1021/jp105766n] [Citation(s) in RCA: 218] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fang-Fang Tian
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Feng-Lei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xiao-Le Han
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Chen Xiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yu-Shu Ge
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Jia-Han Li
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yue Zhang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Ran Li
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xin-Liang Ding
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
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Zhang Y, Li JH, Ge YS, Liu XR, Jiang FL, Liu Y. Biophysical Studies on the Interactions of a Classic Mitochondrial Uncoupler with Bovine Serum Albumin by Spectroscopic, Isothermal Titration Calorimetric and Molecular Modeling Methods. J Fluoresc 2010; 21:475-85. [DOI: 10.1007/s10895-010-0733-y] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 09/28/2010] [Indexed: 10/19/2022]
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Li YS, Ge YS, Zhang Y, Zhang AQ, Sun SF, Jiang FL, Liu Y. Interaction of coomassie brilliant blue G250 with human serum albumin: Probing of the binding mechanism and binding site by spectroscopic and molecular modeling methods. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.01.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [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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Ge YS, Yamaguchi A, Sakuma H. Study on the performance of anaerobic ammonium oxidation treatment using PVA gel as a carrier. Water Sci Technol 2009; 59:1037-1041. [PMID: 19273904 DOI: 10.2166/wst.2009.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A continuous experiment was carried out to study the performance of anaerobic ammonium oxidation (anammox), a novel and low cost nitrogen removal treatment process with an energy-saving characteristic. A complete mixing reactor was used with polyvinyl alcohol (PVA) gel as the carrier. In particular, performances of nitrogen removal and attachment characteristics of anammox bacteria on the PVA carrier surface were investigated. The results indicted that high concentration of anammox bacteria, up to 27,000 mg/L-carrier, had attached on the PVA carrier surface. A high nitrogen removal rate of up to 5.5 kg/m(3)-reactor/d was obtained during this continuous experiment. Furthermore, it was also confirmed that there was no generation of N(2)O gas in the anammox reaction.
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Affiliation(s)
- Y S Ge
- Ebara Corporation, Water Environmental Technology Development Department, 4-2-1Honfujisawa, Fujisawa-shi, 251-8502, Japan
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