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Lin Y, Ying X, Wang F, He P. Abstract P5-13-06: Survival Benefit of Bisphophonates in Early Breast Cancer: A Meta-Analysis. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p5-13-06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Objectives: Bone is one of the most common metastatic sites of breast cancer. Recent date from randomized clinical studies suggested that the use of bisphophonates affect bone metastasis and survival in early breast cancer patients. Results from some of these trials are encouraging but somewhat contradictory. We conducted a meta analyses to assess the effect of bisphosphonates on bone metastasis and survival in primary breast cancer patients.
Methods: Trials were retrieved by searching the PubMed database, Cochrane Library and major cancer scientific conferences up to January 2010. All tirals randomized patients to receive any bisphosphonate versus non-use or placebo. Hazard ratios (HR) and its 95% CIs for bone metastasis free survival and overall survival were estimated.
Results: 8 eligible trials including 6132 patients entered the analysis. 3049 patients were treated with bisphosphonates and 3083 received either placebo or no treatment. Compared with no use, bisphophonates in the adjuvant setting improved the overall survival (HR=0.808; 95%CI 0.708-0.923; P = 0.022). However, the reduction of bone metastasis was failure to be seen (HR = 1.011; 95% CI 0.996-1.027; P = 0.667). Conclusion: Our meta-analysis provides additional evidence that adjuvant breast cancer treastment with bisphosphonates brought a survival benefit. However, the result should be carefully interpreted for that the statistical significance was not consistent in the bone benefit. Results of new clinical trials were awaited.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P5-13-06.
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Sun H, Liu N, Wang L, He P. Determination of Melamine Residue in Liquid Milk by Capillary Electrophoresis with Solid-Phase Extraction. J Chromatogr Sci 2010; 48:848-53. [DOI: 10.1093/chromsci/48.10.848] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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He P, Wang HH, Yan HG, Hu W, Shi JX, Gong ML. A strong red-emitting carbazole based europium(III) complex excited by blue light. Dalton Trans 2010; 39:8919-24. [PMID: 20714628 DOI: 10.1039/c0dt00424c] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel 2-positional linked carbazole based β-diketone with methoxyl in the 7-position (EMOCTFBD), and its europium(III) ternary complex Eu(EMOCTFBD)(3)phen were synthesized via a dexterously designed indirect routine, where EMOCTFBD was 1-(9-ethyl-7-methoxyl-9H-carbazol-2-yl)-4,4,4-trifluorobutane-1,3-dione and phen was 1,10-phenanthroline. Eu(EMOCTFBD)(3)phen shows high thermal stability. The introduction of a methoxyl in the 7-position of the carbazole ring remarkably enhanced the excitation band intensity in the blue region, and the complex exhibited intense red emission under blue-light excitation. The lowest triplet state energy was measured and suggests the photoluminescence process as a ligand-sensitized luminescence process (antenna effect). A bright red-emitting diode was fabricated by coating the complex phosphor onto a ∼460 nm-emitting InGaN chip. All the results indicate that Eu(EMOCTFBD)(3)phen is an interesting red-emitting material excited by blue light, and therefore may be applied in many fields without UV radiation.
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Mao Q, Yang Z, Yu X, He P, Wu X, Liang Z. PP-181 Analyses of the seroepidemiology of three kinds of enterovirus of infants from 7 to 30 months. Int J Infect Dis 2010. [DOI: 10.1016/s1201-9712(10)60249-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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He P. A new graphical representation of similarity/dissimilarity studies of protein sequences. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2010; 21:571-580. [PMID: 20818589 DOI: 10.1080/1062936x.2010.510481] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Based on chaos game representation, a two-dimensional-graphical representation of protein sequences is described in which 20 amino acids are rearranged in a cyclic order using a PAM250 substitution matrix. A numerical characterisation has been developed as a descriptor to compare protein sequences. Finally, an example is given in which the dehydrogenase subunit 5 (ND5) protein sequences of nine species are compared.
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Yao X, Mao Q, Zhou C, He P, Zhu X, Zhang W, Lu F, Liang Z, Li F, Wang J. PL-002 Genetic characteristic of Enterovirus 71 and Coxsackievirus A16 complete genome isolated in Beijing, 2008. Int J Infect Dis 2010. [DOI: 10.1016/s1201-9712(10)60009-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Liu L, He P, Cai K, Zhang Y, Li J, Cao F, Ding Z, Zhang N. Lentivirus-mediated expression of MxA in chicken spermatogonial stem cells. Reprod Domest Anim 2010; 45:e131-7. [PMID: 20412511 DOI: 10.1111/j.1439-0531.2009.01534.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aim of this study was to construct a lentivirus vector that carries the human myxovirus-resistant A (MxA) anti-virus gene for efficiently infecting rooster spermatogonial stem cells (SSCs). A lentiviral vector carrying the enhanced green fluorescent protein (EGFP) and MxA fusion gene (EGFP-MxA) was constructed using TOPO technology in this study. Enhanced green fluorescent protein-MxA was inserted in the right orientation as determined by restriction enzyme digest. No gene recombination in the vector occurred. After infecting 293FT cells, EGFP-MxA fusion protein was expressed as granular green fluorescence characteristic of EGFP-MxA expression, suggesting that the TOPO expression vector was properly constructed and the fusion protein expressed correctly. The EGFP-MxA recombinant lentivirus was packaged by cotransfecting 293FT cells with EGFP-MxA and the packaging plasmids. We also purified SSCs from testicle tissues from 25-day-old roosters for infection with the EGFP-MxA recombinant virus. After infecting rooster SSCs with the recombinant virus for 72 h, EGFP-MxA expression was detected by EGFP expression. Enhanced green fluorescent protein-MxA expression in SSCs was further confirmed at the transcription level by RT-PCR and at the protein level by immunocytochemistry. Staining with Hoechst 33342 showed that infected SSCs differed from the sertoli cells. Similar to stem cells, SSCs were positive for alkaline phosphoric acid enzyme and for stage-specific embryonic antigen-1 stem cell factor. The results demonstrated that the recombinant virus made in our study can infect rooster SSCs efficiently to express the anti-virus protein MxA, establishing the basis of transferring MxA into SSCs to obtain virus-resistant, genetically-modified roosters.
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Shao Z, Huang B, Zhang J, Zhou S, He P, Chen D, Cui S, Ren C, Cai L, Shi J. 22 First interim analysis of a randomized trial comparing capecitabine/epirubicin/cyclophosphamide (XEC) vs 5-FU/epirubicin/cyclophosphamide (FEC) as adjuvant therapy for medium- or high-risk early breast cancer (EBC). EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)70053-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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He P, Zhou Z, Wang Z, Zhou J, Cen K. Visualization of circular subsonic jet flow by DNS. J Vis (Tokyo) 2009. [DOI: 10.1007/bf03181869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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He P, Wang HH, Liu SG, Shi JX, Wang G, Gong ML. Visible-Light Excitable Europium(III) Complexes with 2,7-Positional Substituted Carbazole Group-Containing Ligands. Inorg Chem 2009; 48:11382-7. [DOI: 10.1021/ic901210c] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Shen Z, Liu G, Shao Z, Wang S, Zhang B, Jiang Z, He P. 0143 First efficacy report for China TAX 619 study: Docetaxel in combination with anthracycline and cyclophosphamide or docetaxel followed by anthracycline and cyclophosphamide in adjuvant therapy for operable node positive breast cancer. Breast 2009. [DOI: 10.1016/s0960-9776(09)70174-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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137
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Vavilin VA, Qu X, Qu X, Mazéas L, Lemunier M, Duquennoi C, Mouchel JM, He P, Bouchez T. Similar evolution in delta 13CH4 and model-predicted relative rate of aceticlastic methanogenesis during mesophilic methanization of municipal solid wastes. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2009; 60:3173-3179. [PMID: 19955641 DOI: 10.2166/wst.2009.724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Similar evolution was obtained for the stable carbon isotope signatures delta (13)CH(4) and the model-predicted relative rate of aceticlastic methanogenesis during mesophilic methanization of municipal solid wastes. In batch incubations, the importance of aceticlastic and hydrogenotrophic methanogenesis changes in time. Initially, hydrogenotrophic methanogenesis dominated, but increasing population of Methanosarcina sp. enhances aceticlastic methanogenesis. Later, hydrogenotrophic methanogenesis intensified again. A mathematical model was developed to evaluate the relative contribution of hydrogenotrophic and aceticlastic pathways of methane generation during mesophilic batch anaerobic biodegradation of the French and the Chinese Municipal Solid Wastes (FMSW and CMSW). Taking into account molecular biology analysis reported earlier three groups of methanogens including strictly hydrogenotrophic methanogens, strictly aceticlastic methanogens (Methanosaeta sp.) and Methanosarcina sp., consuming both acetate and H(2)/H(2)CO(3) were considered in the model. The total organic and inorganic carbon concentrations, methane production volume, methane and carbon dioxide partial pressures values were used for the model calibration and validation. Methane isotopic composition (delta (13)CH(4)) evolution during the incubations was used to independently validate the model results. The model demonstrated that only the putrescible solid waste was totally converted to methane.
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Serada S, He P, Takahashi T, Iwahori K, Souma Y, Kim A, Naka T. 101 POSTER Identification of alpha-enolase autoantibody as a novel biomarker in non-small cell lung cancer. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)72033-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Huang W, Qu ZQ, Li XD, He P, Ding N, Zhang SL, Wu M. The effect of transcatheter arterial chemoembolization on CYP1A2 activity in patients with hepatocellular carcinoma. J Clin Pharm Ther 2008; 33:489-93. [DOI: 10.1111/j.1365-2710.2008.00937.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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140
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Xue X, You J, He P. Simultaneous Determination of Five Fat-Soluble Vitamins in Feed by High-Performance Liquid Chromatography Following Solid-Phase Extraction. J Chromatogr Sci 2008; 46:345-50. [DOI: 10.1093/chromsci/46.4.345] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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141
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Qiao R, He P. Mapping of dissipative particle dynamics in fluctuating hydrodynamics simulations. J Chem Phys 2008; 128:126101. [DOI: 10.1063/1.2897991] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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142
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Zeng Y, Tang Z, Wang Q, He P, Fang Y. Simultaneous Determination of Active Ingredients in Ethnomedicine Gaultheria leucocarpa var. yunnanensis and its Medicinal Preparation by Capillary Electrophoresis with Electrochemical Detection. J Chromatogr Sci 2007; 45:610-5. [DOI: 10.1093/chromsci/45.9.610] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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143
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Qiao R, He P. Simulation of heat conduction in nanocomposite using energy-conserving dissipative particle dynamics. MOLECULAR SIMULATION 2007. [DOI: 10.1080/08927020701286511] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Garrett CR, Siu LL, Giaccone G, El-Khoueiry A, Marshall J, LoRusso P, Velasquez L, Kollia G, He P, Feltquate D. A phase I study of BMS-582664 (brivanib alaninate), an oral dual inhibitor of VEGFR and FGFR tyrosine kinases, in combination with full-dose cetuximab in patients (pts) with advanced gastrointestinal malignancies (AGM) who failed prior therapy. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.14018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
14018 Background: Brivanib is an oral prodrug of BMS-540215, a dual tyrosine kinase inhibitor of VEGFR and FGFR signaling. Prior studies have validated both VEGF and EGF signaling pathways as targets in AGM. The MTD of single-agent brivanib is 800 mg qd (ASCO #3051, 2006). Methods: An open-label Phase I dose-escalation study of brivanib in combination with cetuximab was conducted in pts with AGM who failed prior therapy. Brivanib was given po Day 1 and qd from Day 8, starting at 320 mg. Cetuximab was given IV Day 8 (400 mg/m2) then weekly (250 mg/m2). Dose escalation of brivanib continued to 800 mg qd, when an expansion cohort for pts with colorectal cancer (CRC) was opened for additional safety and efficacy. Fresh tissue and blood sampling for biomarker and pharmacokinetic (PK) analysis was performed. FDG-PET was obtained at Baseline X 2, Days 15 and 56. Tumor response (modified WHO) was evaluated q 8 weeks. Results: 18 pts (15 CRC, 2 esophageal, 1 other) were treated with 320, 600 or 800 mg qd of brivanib in combination with cetuximab for a median of 8 weeks (range 1 - 20+). A single DLT, bilateral pulmonary emboli, occurred at 320 mg qd. Few treatment-related AEs occurred across the 3 cohorts (Table). PK/biomarker data is pending. Available FDG-PET results from measurements in 8 pts with 2–3 target lesions showed good baseline reproducibility in SUVpeak, SUVmean and SUVmax, with intra-subject CV of 3.6%, 7.2% and 9.3%, respectively. Conclusions: Brivanib in combination with full-dose cetuximab was well tolerated at ≤800 mg qd and did not result in enhancement of cetuximab associated AEs. Pre-treatment FDG-PET is a highly reproducible imaging modality. [Table: see text] [Table: see text]
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He P, Goethel D, Smith T. Design and Test of a Topless Shrimp Trawl to Reduce Pelagic Fish Bycatch in the Gulf of Maine Pink Shrimp Fishery. ACTA ACUST UNITED AC 2007. [DOI: 10.2960/j.v38.m591] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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He P, Kahle M, Wilson G, Russell C. Removal of Ocular Artifacts from EEG: A Comparison of Adaptive Filtering Method and Regression Method Using Simulated Data. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2007; 2005:1110-3. [PMID: 17282383 DOI: 10.1109/iembs.2005.1616614] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We recently proposed an adaptive filtering method for removing ocular artifacts from EEG recordings. In this study, the accuracy of this method is evaluated quantitatively using simulated data and compared with the accuracy of the time domain regression method. The results show that when transfer of ocular signal to EEG channel is frequency dependent, or when there is a time delay, the adaptive filtering method is more accurate in recovering the true EEG signals.
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DeMarse T, Cadotte A, Douglas P, He P, Trinh V. Computation within cultured neural networks. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2007; 2004:5340-3. [PMID: 17271548 DOI: 10.1109/iembs.2004.1404491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
In this paper we present three related areas of research we are pursuing to study neural computation in vitro. Rat cortical neurons cultured on 60 channel multielectrode array (MEA) allow the researcher to measure from and stimulate sixty different sites across a small population of neurons grown in vitro. Using this system we can send stimulation patterns into the network and study how these living neural networks compute by measuring its outputs. Our first series of studies uses chaotic control techniques to study the dynamics and potentially control the behavior of cortical network. At the same time, we are beginning to apply a model of computation called the liquid state machine or LSM model developed by Wolfgang Maass to provide a firm mathematical framework from which to proceed with our investigations. Each of these components is integrated into a third area investigating the role of computation and feedback using a real-time sensory-motor feedback robotic flight system.
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Nishimura K, Oozono S, Urata H, He P, Soh T, Yamauchi N, Hattori MA. 394 DEVELOPMENT OF A RAT ENDOMETRIAL SPHEROID AS A MODEL FOR THE ANALYSIS OF ENDOMETRIAL FUNCTIONS. Reprod Fertil Dev 2007. [DOI: 10.1071/rdv19n1ab394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The endometrium is one of the most complex tissues; it undergoes dynamic changes in response to implantation and pregnancy processes.An in vitro model may provide a tool for clarifying the complex implantation process. However, there is no suitable in vitro model for investigation of endometrial functions. The spheroid has been utilized in cell biology research because it appears to mimic the morphology and physiology of cells in living tissues and organs, which is unlike conventional monolayer culture. Multicellular spheroids composed of normal adult cells may provide a more useful model for the study of the endometrium. The purpose of the present study was to develop a spheroid composed of rat endometrial stromal (RES) cells as an in vitro model for analysis of endometrial functions. The RES were prepared from rat endometrium at Day 5 of pregnancy. Spheroids were generated using salmon aterocollagen (SAC). The cells were plated on 12-well SAC gels (Imoto Suisan Co.) and cultured in DMEM/F12 containing 10% fetal bovine serum. After the cells reached confluence at Day 7 in culture, SAC gels were digested by collagenase to promote the detachment of RES cell sheets. Then the floating cell sheets were transferred to agarose-coated plates and cultured to form spheroids. The cell sheet shrank and became an aggregated cell mass in a few days; it finally formed a round-shaped spheroid. Diameters of the spheroids were about 516.7 � 28.9 �m at Day 5 after detachment from SAC gels. TUNEL examination of cell viability in the spheroid suggested that no cell was apoptotic until 15 days after cell sheet detachment; TUNEL-positive cells appeared at 20 days. Additionally, no positive staining of proliferating cell nuclear antigen (PCNA) was observed in the spheroids in contrast to strong staining in proliferating monolayer cultured cells. The results of gelatin zymography showed that both matrix metalloproteinases (MMP)-2 and-9 were produced in monolayer culture. However, after the detachment of the cell sheet, the production of both MMPs decreased immediately and could not be detected until 15 days after detachment. In vitro decidualization of the spheroids was induced by arachidonic acid (AA) treatment. RT-PCR analysis showed that typical marker genes for the decidualization, desmin and decidual/trophoblast prolactin-related protein (d/tPRP), were expressed in the spheroids after 2 days of AA treatment, but not in the control groups without treatment. The results of the present study indicate that rat endometrial stromal cells are capable of being regenerated as a spheroid using SAC gels in vitro. Importantly, the present spheroid displays an endometrium-mimicking feature in both structural and functional similarities. The present method is simple and convenient, and therefore provides a new insight into the study of endometrial functions and implantation.
This research was supported by a grant from the Ministry of Education, Culture, Sport, Science, and Technology of Japan (Kiban-kenkyu C 18580282).
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Qu ZQ, Li XD, Liu HL, He P, Zhang X, Wu MC. Impaired clearance of phenacetin in hepatic cirrhosis and fibrosis. Int J Clin Pharmacol Ther 2007; 45:55-62. [PMID: 17256451 DOI: 10.5414/cpp45055] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE CYP450 1A2 is constitutively expressed in liver. Phenacetin O-de-ethylation is a marker reaction for CYP450 1A2 activity. In this paper, the metabolism of phenacetin has been studied in patients with chronic hepatitis B or cirrhosis secondary to a hepatitis B virus infection. The possibility of using the phenacetin test in the evaluation of liver function in these subjects has also been tested. SUBJECTS AND METHODS Phenacetin pharmacokinetics and the recovery of its urinary metabolites were studied in 8 normal subjects, 16 patients with chronic hepatitis B and 12 patients with cirrhosis. The phenacetin test was performed in 18 normal subjects and 52 hepatocellular carcinoma (HCC) patients. The test was repeated in HCC patients after treatment with transcatheter arterial chemoembolization (TACE). RESULTS Compared with normal controls, phenacetin apparent clearance decreased by 47.0% (p < 0.05) and 78.7% (p < 0.01) in patients with chronic hepatitis B and cirrhosis, respectively. The recovery of phenacetin O-de-ethylated metabolites decreased by 24.6 and 72.4% (p < 0.01). 46 of 52 HCC patients (88.4%) had an abnormal phenacetin test before TACE, where the ratio of plasma total acetaminophen to phenacetin was below the lower limit of the normal control range. The ratio was less than 50% of normal controls in 6 HCC patients who had a deterioration in liver function from Child-Pugh class A to Child-Pugh class B after TACE. CONCLUSION The metabolism of phenacetin is impaired in patients with chronic hepatitis B and cirrhosis. The phenacetin test can predict the susceptibility of liver function to TACE in HCC patients.
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Wang JH, Zhou YJ, He P, Chen BY. Roles of mitogen-activated protein kinase pathways during Escherichia coli-induced apoptosis in U937 cells. Apoptosis 2006; 12:375-85. [PMID: 17191113 DOI: 10.1007/s10495-006-0623-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Escherichia coli (E. coli) infections play an important and growing role in the clinic. In the present study, we investigated the involvement of members of the mitogen-activated protein kinase (MAPK) superfamily, including extracellular signal-regulated kinase (ERK), c-Jun NH(2)-terminal kinase (JNK) and p38 MAPK, and caspase-3 and 9 activity in E. coli-induced apoptosis in human U937 cells. We found that E. coli induces apoptosis in U937 cell lines in a dose- and time-dependent manner, p38 MAPK and JNK were activated after 10 min of infection with E. coli. In contrast, ERK1/2 was down-regulated in a time-dependent manner. The levels of total (phosphorylation state-independent) p38 MAPK, JNK and ERK1/2 did not change in E. coli-infected U937 cells at all times examined. Moreover, exposure of U937 cells to E. coli led to caspase-3 and 9 activity. For the evaluation of the role of MAPKs, PD98059, SB203580 and SP600125 were used as MAPKs inhibitors for ERK1/2, p38 MAPK and JNK. Inhibition of ERK1/2 with PD98059 caused further enhancement in apoptosis and caspase-3 and 9 activity, while a selective p38 MAPK inhibitor, SB203580 and JNK inhibitor, SP600125 significantly inhibited E. coli-induced apoptosis and caspase-3 and 9 activity in U937 cells. The results were further confirmed by the observation that the caspase inhibitors Z-DEVD-FMK and Z-LEHD-FMK blocked E. coli-induced U937 apoptosis. Taken together, we have shown that E. coli increase p38 MAPK and JNK and decrease ERK1/2 phosphorylation and increase caspase-3 and 9 activity in U937 cells.
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