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Hwang JY, Yoo C, Kim T, Lee J, Park D, Seo D, Lee S, Kim M, Han D, Kim S, Lee J. A randomized phase II study of FOLFOX or FOLFIRI.3 as second-line therapy in patients with advanced pancreatic cancer previously treated with gemcitabine-based chemotherapy. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.4618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4618 Background: Only few clinical trials have been conducted in patients with advanced pancreatic cancer after failure of first-line gemcitabine-based chemotherapy. We conducted a randomized phase II trial of modified FOLFOX vs. modified FOLFIRI.3 as second-line regimen for the patients with gemcitabine refractory pancreatic cancer ( NCT00786006 ). Methods: Patients with advanced pancreatic adenocarcinoma previously treated with gemcitabine were randomly assigned to FOLFOX or FOLFIRI.3 stratifying by age (≤ 65 vs. >65), performance status (0–1 vs. 2) and prior response to gemcitabine (PR/SD vs. PD). FOlFIRI.3 regimen consisted of Irinotecan 70 mg/m2 (over 60 min) D1, leucovorin 400 mg/m2 (over 2h) D1, 5-FU 2000 mg/m2 (over 46 hours) from D1, then irinotecan 70 mg/m2 (over 60 min) at the end of the 5-FU infusion every two week. FOLFOX regimen is composed of oxaliplatin 85 mg/m2 (over 120 min) D1, LV 400 mg/m2 D1, 5-FU 2,000 mg/m2 (over 46 hours) every two week. The primary end-point was 6-month overall survival (P0=20%) and Simon-Wittes-Ellenberg design was used to calculate the sample size (29 evaluable patients for each treatment arm). Results: From January 2007 to December 2008, sixty patients were enrolled and randomized to FOLFOX (N=30) or FOLFIRI.3 (N=30). Baseline characteristics were well balanced between each arm; median age 56 (35–60) vs. 56 yo (37–73); ECOG PS 0/1/2, 5/24/1 vs. 5/25/0; prior response to gemcitabine-based chemotherapy PR/SD/PD 10/13/7 vs. 10/11/9. With a median follow-up period of 6.0 months (95% CI, 4.7–7.3) the median overall survival was 4.0 months in both group (HR=0.95, 95% CI 0.52–1.75) with 6-month survival rates of 25% and 20%, respectively. The median PFS was 1.4 months for FOLFOX and 1.9 months for FOLFIRI.3 (HR=1.11, 95% CI, 0.64–1.92). Disease control (PR+SD) was achieved in 20% (5/25 in FOLFOX) and 28% (7/25 in FOLFIRI.3) of patients with measurable disease. The incidences of grade 3/4 toxicities were similar in both groups. Conclusions: Both FOLFOX and FOLFIRI.3 were tolerated with manageable toxicity, offering modest activity as second-line treatment of patients with advanced or metastatic pancreatic cancer, previously treated with gemcitabine. No significant financial relationships to disclose.
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Yu J, Han D, Zhong X, Mu D, Fu Z, Zhan g B, Zhang L, Zhang W. The optimal threshold of 18F-FLT PET and 18F-FDG PET to estimate the length of gross tumor volume in patients with squamous cell carcinoma of the thoracic esophagus verified by pathological examination. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15665 Background: To determine the optimal method of using 3-deoxy-3-18F-fluorothymidine (FLT) positron emission tomography (PET) to estimate gross tumor length in esophageal carcinoma, and compared with that of 18F- fluorodeoxyglucose(FDG) PET. Methods: Twenty patients with esophageal squamous cell carcinoma treated with radical surgery were enrolled and detected by FLT PET, eighteen of them underwent FDG PET scan. Gross tumor volumes (GTVs) were delineated using seven different methods with FLT PET: visual interpretation, standardized uptake value (SUV) 1.3, SUV 1.4, SUV 1.5, and 20% of maximum standard uptake value (SUVmax), 25% SUVmax,30% SUVmax, on FLT PET imaging, and three different methods with FDG PET: visual interpretation, SUV 2.5, and 40%SUVmax on FDG PET imaging. The length of tumors on FLT PET scan were measured and recorded as LFLTvis, LFLT1.3, LFLT1.4, LFLT1.5, LFLT20%, LFLT25%, and LFLT30%, and FDG PET scan were measured and recorded as LFDGvis, LFDG2.5, and LFDG40%, respectively, and compared with the length of gross tumor in the resected specimen measured by pathological examination (LPath). Results: The mean (±SD) LPath was 5.16±2.19cm. The mean LFLTvis, LFLT1.3, LFLT1.4, LFLT1.5, LFLT20%, LFLT25%, and LFLT30%were 5.17±2.40cm, 5.55±2.43cm, 5.17±2.41cm, 4.95±2.44cm, 5.82±2.23cm, 5.32±2.31cm, and 5.04±2.28cm, respectively. Compared with the LPath, the P value were 0.971, 0.045, 0.972, 0.255, 0.066, 0.644, and 0.714, respectively. The correlation coefficients were 0.952, 0.944, 0.959, 0.948, 0.763, 0.783, and 0.800, respectively. The mean LFDGvis, LFDG2.5, and LFDG40% were 5.41±2.27cm, 5.38±2.25cm, and 4.02±1.57cm, respectively. Compared with the LPath, the P value were 0.098, 0.085 and 0.000, respectively. The correlation coefficients were 0.984, 0.990 and 0.932, respectively. On FLT PET, LFLT1.4, and on FDG PET, L FDG2.5 seem more approximate to LPath. The difference between LFLT1.4 and LFDG2.5 was not significantly (P=0.442), the correlation coefficients was 0.960. Conclusions: An SUV cutoff of 1.4 on FLT PET, and an SUV cutoff of 2.5 on FDG PET, provided the closest estimation of GTV length in this study No significant financial relationships to disclose.
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Lee J, Lee S, Kim T, Lee J, Park D, Seo D, Lee S, Kim M, Han D, Kim S. Phase II trial of neoadjuvant fixed dose rate (FDR) gemcitabine with capecitabine (GX) combination chemotherapy in locally advanced pancreatic adenocarcinoma (LAPA). J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15553 Background: To determine the efficacy and safety of fixed dose rate (FDR) gemcitabine and capecitaibne (GX) combination chemotherapy for locally advanced pancreatic adenocarcinoma Methods: Patients with histologically confirmed LAPA were eligible for this prospective phase II trial. Dynamic pancreas/pelvic CT, MRI and FDG-PET were undertaken to assess the resectability. EUS was also performed as needed basis. ‘Borderline resectable (BR)’ and ‘unresectable (UR)’ criteria developed by our pancreatico-biliary multidisciplinary management team (PBMMT) and NCCN criteria were used. After confirmation of resectability, patients received 3 cycles of FDR gemcitabine 1,250 mg/m2 on D1 and D8 and capecitabine 950 mg/m2 from D1-D14 every 3 weeks. Thereafter, staging was repeated and patients underwent surgery if the disease was not unresectable. For patients with R0 resection, additional 6 cycles of GX were administered. For patients with R1 resection, chemoradiotherapy (CRT) (54 Gy over 5 weeks with concurrent 5-FU and leucovorin or capecitabine) followed by FDR-GX was administered. Patients with stable or better response to chemotherapy but assessed unresectable at reassessment received additional chemotherapy up to 9 cycles followed by CRT. Results: Between August 2006 and July 2008, 38 eligible patients (14 with BR and 24 with UR based on NCCN criteria; 29 with BR and 9 with UR based on our PBMMT criteria) entered on this study. The median age was 61 yo (42–76) and 71% had cT4 disease. The response to neoadjuvant chemotherapy was PR in 6 (16%), SD in 26 (68%) and PD in 3 (8%). Metabolic response was achieved in 20 patients (53%) with 2 metabolic CR out of 31 evaluable patients. Grade 3 or worse adverse effects were mainly HFS (n=5) and gastrointestinal (n=3) with no grade 4 in severity. Surgery was performed in 9 patients (24.0%, R0=8, R1=1, 6 in NCCN-BR and 3 in NCCN-UR, 9 in PBMMT-BR) and five patients refused surgery although their diseases seemed not to be unresectable. The median PFS was 9.4 months (95% CI, 8.3–10.4) and estimated median OS was 13.5 months (95% CI, 12.4- 14.5). Conclusions: FDR-GX was effective as neoadjuvnat chemotherapy in LAPA with favorable toxicity profile. No significant financial relationships to disclose.
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Sun Q, Li W, She R, Wang D, Han D, Li R, Ding Y, Yue Z. Evidence for a role of mast cells in the mucosal injury induced by Newcastle disease virus. Poult Sci 2009; 88:554-61. [PMID: 19211524 DOI: 10.3382/ps.2008-00468] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We have previously demonstrated that mast cells were significantly increased during Newcastle disease virus (NDV) infection, but their precise role in the process is unknown. In this study, we investigated the role of mast cells in this process by using ketotifen, a mast cell membrane stabilizer. A total of 60 specific-pathogen-free chickens were randomly divided into 3 groups of 20 birds each (NDV-infected group, ketotifen-pretreated group, and the control group). The ketotifen-pretreated group was administered orally with ketotifen before NDV infection. On 12, 24, and 48 h postinfection, 5 chickens from each treatment were killed. Tissues of proventriculus were collected to quantify mast cells, the content of tryptase and histamine by cytochemistry, immunohistochemistry, and fluorescence analysis, respectively. The results showed that the population of mast cells and the content of tryptase and histamine were increased significantly in the proventriculus (P < 0.01) of infected birds compared with the control group. An acute mucosal injury was observed in the infected chickens. In contrast, among chickens pretreated with ketotifen, followed by NDV infection, the mast cells number and the content of tryptase and histamine were decreased significantly (P < 0.01). Likely as a result, the mucosal injury was remitted remarkably. The overall results of this experiment suggest that mast cells are implicated in NDV-induced mucosal injury. Inhibition of mast cell mediator release may represent a novel strategy to modulate this process.
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Song S, Han D, Qu H, Gong Y, Wu H, Zhang X, Zhong N, Feng H. EDA gene mutations underlie non-syndromic oligodontia. J Dent Res 2009; 88:126-31. [PMID: 19278982 DOI: 10.1177/0022034508328627] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Recent studies have detected mutations in the EDA gene, previously identified as causing X-linked hypohidrotic ectodermal dysplasia (XLHED), in two families with X-linked non-syndromic hypodontia. Notably, all affected males in both families exhibited isolated oligodontia, while almost all female carriers showed a milder or normal phenotype. We hypothesized that the EDA gene could be responsible for sporadic non-syndromic oligodontia in affected males. In this study, we examined 15 unrelated males with non-syndromic oligodontia. Three novel EDA mutations (p.Ala259Glu, p. Arg289Cys, and p.Arg334His) were identified in four individuals (27%). A genetic defect in the EDA gene could result in non-syndromic oligodontia in affected males.
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Han D, Tsung F. The Optimal Stopping Time for Detecting Changes in Discrete Time Markov Processes. Seq Anal 2009. [DOI: 10.1080/07474940802619451] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Han B, Tang R, Han D, Wang F, Zhao S, Xu M. Effects of Chinese Herb Danshen-Dahuang on Hippocampal Gene Expression of APP and PS1 in Rats with Alzheimer Disease. Eur Psychiatry 2009. [DOI: 10.1016/s0924-9338(09)70715-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aims:To investigate the effect of Chinese herb Danshen-Dahuang on learning and memory ability in rats with Alzheimer disease (AD) induced by D-galactose and AlCl3 and its possible mechanisms.Methods:The AD model was produced by injecting D-galactose and AlCl3 intraperitoneally for 90 days. Since the 20th day of D-galactose and AlCl3 intraperitoneal injection, the rats in Danshen-Dahuang group had been treated with Danshen-Dahuang extraction by intragastric administration for 70 days. Subsequently,learning and memory ability of the mice was evaluated by Morris water maze and hippocampal gene expression of APP, PS1 was tested by reverse transcription polymerase chain reaction (RT-PCR).Results:Rats intragastric administration with Danshen-Dahuang, mice had shorter latency (P< 0.05) and less error times (P< 0.05) in water maze test compared with those in AD model group. At the same time, Danshen-Dahuang down regulated the expression of APP, PS1 mRNA (P< 0.05) in hippocampus.Conclusions:Danshen-Dahuang improves the learning and memory ability of AD rats, its mechanism may be related to the downregulated expression of APP, PS1 mRNA.
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Matsumura M, Iyenori T, Tanaka Y, Han D, Nose M, Utsugi M, Oshiman N, Shinagawa H, Odagi Y, Tabata Y. Acoustic Resonance between Ground and Thermosphere. DATA SCIENCE JOURNAL 2009. [DOI: 10.2481/dsj.8.s68] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Zhang Y, Su Q, Wang Z, Yang Y, Xin Y, Han D, Yang X, Wang H, Gao X, Zhang Z. Synthesis and Toluene Adsorption/Desorption Property of Beta Zeolite Coated on Cordierite Honeycomb by an In Situ Crystallization Method. Chem Eng Technol 2008. [DOI: 10.1002/ceat.200800260] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Han D, Fan Y, Hu Z. An evaluation of four phylogenetic markers in Nostoc: implications for cyanobacterial phylogenetic studies at the intrageneric level. Curr Microbiol 2008; 58:170-6. [PMID: 18972163 DOI: 10.1007/s00284-008-9302-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2006] [Accepted: 10/12/2006] [Indexed: 11/24/2022]
Abstract
The success of some phylogenetic markers in cyanobacteria owes to the design of cyanobacteria-specific primers, but a few studies have directly investigated the evolution "behavior" of the loci. In this study, we performed a case study in Nostoc to evaluate rpoC1, hetR, rbcLX, and 16S rRNA-tRNA(Ile)-tRNA(Ala)-23S rRNA internal transcribed spacer (ITS) as phylogenetic markers. The results indicated that the gene trees of these loci are not congruent with the phylogeny based on 16S rRNA gene. The mechanisms contributing to the incongruence include randomized variation and recombination. As the results suggested, one should be careful to choose the molecular markers for phylogenetic reconstruction at the intrageneric level in cyanobacteria.
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Zhang P, Han D, Tang T, Zhang X, Dai K. Inhibition of the development of collagen-induced arthritis in Wistar rats through vagus nerve suspension: a 3-month observation. Inflamm Res 2008; 57:322-8. [PMID: 18607536 DOI: 10.1007/s00011-008-8070-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE AND DESIGN In this study, we have investigated the effects of vagus nerve suspension in a rat model of collagen-induced arthritis (CIA) . MATERIALS AND TREATMENT CIA was induced in male Wistar rats and vagus nerve suspension or sham operation was performed on day 10 after the second immunization. All rats were monitored for macroscopic signs of clinical arthritis and cytokine titres within 2 months after the second immunization. Radiological and histological examination were performed 3 months after the second immunization. RESULTS Rats subjected to vagus nerve suspension (the test group) showed nerve activities that resemble electrical stimulation of the vagus nerve in the control group. Compared to control, the test group had reduced soft-tissue swelling, arthritic scores, TNF-alpha level and Collagen-II antibody titre, throughout the course of the experiment. Sham operation produced similar suppression on the CIA symptoms as the test group but most of the effects produced by sham operation subsided after 27 or 35 days. CONCLUSION Vagus nerve suspension is a novel approach to achieve sustained long-term stimulation of the vague nerve. This procedure can suppress the development of CIA in rats.
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Wen XR, Li C, Zong YY, Yu CZ, Xu J, Han D, Zhang GY. Dual inhibitory roles of geldanamycin on the c-Jun NH2-terminal kinase 3 signal pathway through suppressing the expression of mixed-lineage kinase 3 and attenuating the activation of apoptosis signal-regulating kinase 1 via facilitating the activation of Akt in ischemic brain injury. Neuroscience 2008; 156:483-97. [DOI: 10.1016/j.neuroscience.2008.08.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2008] [Revised: 07/23/2008] [Accepted: 08/06/2008] [Indexed: 02/05/2023]
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Yu HM, Xu J, Li C, Zhou C, Zhang F, Han D, Zhang GY. Coupling between neuronal nitric oxide synthase and glutamate receptor 6-mediated c-Jun N-terminal kinase signaling pathway via S-nitrosylation contributes to ischemia neuronal death. Neuroscience 2008; 155:1120-32. [PMID: 18676085 DOI: 10.1016/j.neuroscience.2008.03.061] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2008] [Revised: 03/22/2008] [Accepted: 03/25/2008] [Indexed: 10/22/2022]
Abstract
S-nitrosylation, as a post-translational protein modification, recently has been paid more and more attention in stroke research. S-nitrosylation regulates protein function by the mechanisms of covalent attachment that control the addition or the removal of nitric oxide (NO) from a cysteine thiol. The derivation of NO is established by the demonstration that, in cerebral neurons, NO mainly generates from neuronal nitric oxide synthase (nNOS) during the early stages of reperfusion. In the past researches, we demonstrate that global ischemia-reperfusion facilitates the activation of glutamate receptor 6 (GluR6) -mediated c-Jun N-terminal kinase (JNK) signaling pathway. The objective of this study is primarily to determine, during the early stages of reperfusion in rat four-vessel occlusion (4-VO) ischemic model, whether nNOS-derived NO affects the GluR6-mediated JNK signaling route via S-nitrosylation which is performed mainly by the biotin switch assay. Here, we show that administration of 7-nitroindazole, an inhibitor of nNOS, or ketamine, an antagonist of N-methyl-d-aspartate receptor (NMDAR), diminishes the increased S-nitrosylation of GluR6 induced by cerebral ischemia-reperfusion. In contrast, 2-amion-5,6-dihydro-6-methyl-4H-1,3-thiazine, an inhibitor of inducible NO synthase does not affect S-nitrosylation of GluR6. Moreover, treatment with sodium nitroprusside (SNP), an exogenous NO donor, increases the S-nitrosylation and phosphorylation of nNOS, leading to the attenuation of the increased S-nitrosylation of GluR6 and the assembling of GluR6* postsynaptic density protein 95 (PSD95)* mixed lineage kinase 3 (MLK3) signaling module induced by cerebral ischemia-reperfusion. The results also show that GluR6 downstream MLK3* mitogen activated protein kinase kinase 4/7* JNK signaling module and nuclear or non-nuclear apoptosis pathways are involved in the above signaling route. However, dithiothreitol (DTT) antagonizes the neuroprotection of SNP. Treatment with DTT alone, as a negative control, prevents S-nitrosylation of proteins, which indicates the existence of endogenously produced S-nitrosylation. These data suggest that GluR6 is S-nitrosylated by endogenous NO in cerebral ischemia-reperfusion, which is possibly correlated with NMDAR* PSD95* nNOS signaling module, and further activates GluR6* PSD95* MLK3 signaling module and JNK signaling pathway. In contrast, exogenous NO donor antagonizes the above action of endogenous NO generated from nNOS. Thus, our results provide the coupling of nNOS with GluR6 by S-nitrosylation during the early stages of ischemia-reperfusion, which can be a new approach for stroke therapy.
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Jang W, Kim I, Park C, Han D, Cho B, Jung H, Wang K, Kim D, Paek S, Kim S. Postoperative Radiotherapy for Patients with Intracranial Ependymoma: Patterns of Failure and Role of Craniospinal Radiotherapy. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Mineo D, Ricordi C, Xu X, Pileggi A, Garcia-Morales R, Khan A, Baidal DA, Han D, Monroy K, Miller J, Pugliese A, Froud T, Inverardi L, Kenyon NS, Alejandro R. Combined islet and hematopoietic stem cell allotransplantation: a clinical pilot trial to induce chimerism and graft tolerance. Am J Transplant 2008; 8:1262-74. [PMID: 18444924 DOI: 10.1111/j.1600-6143.2008.02230.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
To prevent graft rejection and avoid immunosuppression-related side-effects, we attempted to induce recipient chimerism and graft tolerance in islet transplantation by donor CD34+hematopoietic stem cell (HSC) infusion. Six patients with brittle type 1 Diabetes Mellitus received a single-donor allogeneic islet transplant (8611 +/- 2113 IEQ/kg) followed by high doses of donor HSC (4.3 +/- 1.9 x 10(6) HSC/kg), at days 5 and 11 posttransplant, without ablative conditioning. An 'Edmonton-like' immunosuppression was administered, with a single dose of anti-TNFalpha antibody (Infliximab) added to induction. Immunosuppression was weaned per protocol starting 12 months posttransplant. After transplantation, glucose control significantly improved, with 3 recipients achieving insulin-independence for a short time (24 +/- 23 days). No severe hypoglycemia or protocol-related adverse events occurred. Graft function was maximal at 3 months then declined. Two recipients rejected within 6 months due to low immunosuppressive trough levels, whereas 4 completed 1-year follow-up with functioning grafts. Graft failure occurred within 4 months from weaning (478 +/- 25 days posttransplant). Peripheral chimerism, as donor leukocytes, was maximal at 1-month (5.92 +/- 0.48%), highly reduced at 1-year (0.20 +/- 0.08%), and was undetectable at graft failure. CD25+T-lymphocytes significantly decreased at 3 months, but partially recovered thereafter. Combined islet and HSC allotransplantation using an 'Edmonton-like' immunosuppression, without ablative conditioning, did not lead to stable chimerism and graft tolerance.
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Han D, Karakousis GC, Huang J, Bartlett E, Pasha TL, Lee FS, Zhang PJ, Fraker DL. Clinical behavior of retroperitoneal sarcomas that express HIF-1α, PHD2 and/or VEGF. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.10589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Arnold JL, Dickinson G, Tsai MC, Han D. A survey of emergency medicine in 36 countries. CAN J EMERG MED 2008; 3:109-18. [PMID: 17610800 DOI: 10.1017/s1481803500005340] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To assess the current level of development of emergency medicine (EM) systems in the world. DESIGN Survey of EM professionals from 36 countries during a 90-day period from Aug. 25 to Nov. 24, 1998. PARTICIPANTS Thirty-six EM professionals from 36 countries and 6 continents completed the survey. Thirty-five (97%) were physicians, of whom 25 (69%) gave presentations at 1 of 4 international EM conferences during the study period. Three potential participants from 3 countries were excluded because of language barriers. Five additional participants from 5 other countries did not respond within the study period and were excluded. MEASUREMENTS Respondents completed a 103-question questionnaire about the presence of EM specialty, academic, patient care, information and management systems and the factors influencing the future of EM in their countries. RESULTS The overall response rate was 88%. Nearly all respondents (97%) stated that their countries had hospital-based emergency departments (EDs). More than 80% of respondents reported that their countries have emergency medical services (EMS), national EMS activation phone numbers and ED systems for pediatric emergency care. More than 70% stated that their countries had national EM organizations, EM research, ED systems for patient transfer and peer review and emergency physician (EP) training in Advanced Cardiac Life Support (ACLS) and the ability to perform rapid sequence intubation. More than 60% reported ED systems for trauma care and triage and EP training in Advanced Trauma Life Support (ATLS) and the ability to perform thrombolysis for acute myocardial infarction. Fifty percent reported EM residency training programs, official recognition of EM as an independent specialty, and EM journals. CONCLUSIONS Basic emergency medicine components now exist in the majority of countries surveyed. These include many specialty, academic, patient care and administrative systems. The foundation for further EM development is widely established throughout the world.
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Trinh L, Han D, Huang W, Wrin T, Larson J, Kiss L, Coakley E, Petropoulos CJ, Parkin N, Whitcomb JM, Reeves JD. Validation of an enhanced sensitivity Trofile™ HIV-1 co-receptor tropism assay for selecting patients for therapy with entry inhibitors targeting CCR5. J Int AIDS Soc 2008. [DOI: 10.1186/1758-2652-11-s1-p197] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Zhang F, Li C, Wang R, Han D, Zhang QG, Zhou C, Yu HM, Zhang GY. Activation of GABA receptors attenuates neuronal apoptosis through inhibiting the tyrosine phosphorylation of NR2A by Src after cerebral ischemia and reperfusion. Neuroscience 2007; 150:938-49. [DOI: 10.1016/j.neuroscience.2007.09.070] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2007] [Revised: 09/26/2007] [Accepted: 10/05/2007] [Indexed: 10/22/2022]
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Koh YH, Han D, Cha JH, Seong CK, Kim J, Choi YH. Vertebroplasty: magnetic resonance findings related to cement leakage risk. Acta Radiol 2007; 48:315-20. [PMID: 17453503 DOI: 10.1080/02841850601161554] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE To find magnetic resonance (MR) findings predicting cement leakage in patients receiving percutaneous vertebroplasty (PVP) due to osteoporotic compression fractures. MATERIAL AND METHODS MR was done in 43 patients (age 52-89 years) before PVP (56 vertebrae), which was done via a bipedicular approach with fluoroscopic monitoring. Shortly after the procedure, a non-contrast-enhanced computed tomography (CT) scan was done at the vertebroplasty sites for evaluation of bone cement leakage. The following MR findings of fractured vertebral bodies were retrospectively reviewed for correlation with leakage risk: severity of bone-marrow edema, presence of a T2-weighted low-signal-intensity line, percentage residual vertebral body height, presence of either a vacuum or cystic change within the vertebral body, and presence of a cortical disruption. RESULTS After PVP, cement leakage was detected in 35 vertebrae (62.5%). Leakage was most frequently observed in the anterior external vertebral venous plexus (46%). Cement leakage rate increased when there was a cortical disruption (P = 0.037), especially at the endplates, while it decreased when there was a vacuum or a cystic change within the fractured vertebra (P = 0.019). Other MR findings were not related to the risk of cement leakage. CONCLUSION The risk of cement leakage in PVP increases when MR shows cortical disruption in a fractured vertebral body, especially at the endplates. It decreases when MR shows a vacuum or cystic change within the body.
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Han D, Hu Z. Mutations Stabilize Small Subunit Ribosomal RNA in Desiccation-Tolerant Cyanobacteria Nostoc. Curr Microbiol 2007; 54:254-9. [PMID: 17334839 DOI: 10.1007/s00284-006-0095-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2006] [Accepted: 05/19/2006] [Indexed: 10/23/2022]
Abstract
The ribosomal RNA molecule is an ideal model for evaluating the stability of a gene product under desiccation stress. We isolated 8 Nostoc strains that had the capacity to withstand desiccation in habitats and sequenced their 16S rRNA genes. The stabilities of 16S rRNAs secondary structures, indicated by free energy change of folding, were compared among Nostoc and other related species. The results suggested that 16S rRNA secondary structures of the desiccation-tolerant Nostoc strains were more stable than that of planktonic Nostocaceae species. The stabilizing mutations were divided into two categories: (1) those causing GC to replace other types of base pairs in stems and (2) those causing extension of stems. By mapping stabilizing mutations onto the Nostoc phylogenetic tree based on 16S rRNA gene, it was shown that most of stabilizing mutations had evolved during adaptive radiation among Nostoc spp. The evolution of 16S rRNA along the Nostoc lineage is suggested to be selectively advantageous under desiccation stress.
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247
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Zhang H, Zou X, Han D. Hydrogen Peroxide Sensor Based on Hemoglobin Immobilized on Glassy Carbon Electrode with SiO2Nanoparticles/Chitosan Film as Immobilization Matrix. ANAL LETT 2007. [DOI: 10.1080/00032710601017730] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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248
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Choudry H, Staveley-O’Carroll K, Han D, Kimchi E. P179. J Surg Res 2007. [DOI: 10.1016/j.jss.2006.12.515] [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]
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249
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Han D. PS01.1 Sleep apnea in Asia. Sleep Med 2007. [DOI: 10.1016/s1389-9457(07)70010-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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250
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Han D, Yoon TH. Changes in the traditional Korean medical sector as a result of health related legislation. MEDICINE AND LAW 2006; 25:685-97. [PMID: 17263035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The objective of this study is to determine the effect of changes in the legal systems related to traditional Korean medicine (TKM) and their effect on health care in Korea. To cope with the many changes and challenges in the Korean health care system, health law has been used as an instrument to implement national health policies and support the developments of health systems. In particular, the Medical Service Act, amended in 1951, was the key factor for the coexistence of TKM and Western medicine in Korea. For systematizing the TKM, the roles of the National Health Insurance Act and the Medical Service Act were crucial. Considering Korea's experiences, health laws related to TKM were designed to regulate the health care system and have contributed to improve the quality and safety of TKM.
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