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Sripada S, Roy S, Mathur M, Hamilton M, Cranfield K, Bhattacharya S. A prospective double-blind randomised controlled trial of intraoperative pelvic instillation with bupivacaine for management of pain following laparoscopy and dye. BJOG 2006; 113:835-8. [PMID: 16827769 DOI: 10.1111/j.1471-0528.2006.00959.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The aim of this randomised, double-blind, placebo-controlled trial was to evaluate the effectiveness of intraperitoneal instillation of bupivacaine following laparoscopy and dye test. Women received either 15 ml of 0.9% saline (n= 42) or 15 ml of 0.5% bupivacaine (n= 43), which was instilled intraperitoneally. Pain and nausea scores were recorded on a visual analogue scale (VAS). Pain perception was no different in the bupivacaine group compared with the control group with median values of VAS at 2 hours (18, 19; P= 0.8), 6 hours (21, 22; P= 0.5), 12 hours (19, 25; P= 0.8), 24 hours (27, 27; P= 0.9) and 48 hours (21, 13; P= 0.26). Women in the bupivacaine group were less nauseated than controls in the immediate postoperative period (with median VAS scores of 0, 8; P value = 0.03 at 2 hours and 0, 7; P= 0.01 at 6 hours).
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Forsyth PA, Roldan G, George D, Wallace C, Morris DG, Cairncross J, Vallee Matthews M, Coffey M, Thompson B, Hamilton M. A phase I trial of intratumoral (i.t.) administration of reovirus in patients with histologically confirmed recurrent malignant gliomas (MGs). J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.1563] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
1563 Background: Reovirus is an oncolytic virus which replicates preferentially in transformed cells possessing activated Ras signaling pathways. Promising activity was found in in vivo models of MGs and in a phase I trial in patients (pts.) with cutaneous metastases from systemic cancer. We performed this dose-escalation trial of i.t. administration of reovirus to determine the dose limiting toxicity (DLT) and maximum tolerated dose (MTD) in pts. with recurrent MG. Response, survival and time to progression (TTP) were secondary aims. Methods: Pts. were ≥ 18 yrs old, had a KPS ≥ 60, received prior radiotherapy ± chemotherapy, a histologically proven recurrence of MG and recurred ≤ 3 times. Reovirus was administered i.t. stereotactically at one of three dose levels (1 × 107, 1 × 108 or 1 × 109 TCID50) in a volume of 0.9 mls. Results: Twelve pts. were treated at 3 dose levels; seven were men, the median (mdn) KPS was 80, mdn age was 53.5 yrs, 10 had glioblastoma multiforme, one anaplastic astrocytoma and another anaplastic oligoastrocytoma. There were the 1st, 2nd or 3rd recurrences in 6, 5 and 1 pts., respectively. During i.t. viral administration all pts. were treated with prophylactic anticonvulsants and 6 (50%) were receiving corticosteroids. The 1st, 2nd and 3rd cohorts contained 3, 6 and 3 pts., respectively. There were no grade 3 or 4 adverse events definitely or probably related to the administration of reovirus. A transient increase in GGT was possibly related to reovirus administration and a patient experienced grade 3 motor weakness that could be related to post-injection edema. Viral shedding and systemic immune responses were examined but results are pending. There were no CR, or PR; a pt. had SD, 10 PD and one was not evaluable. The mdn survival was 20 weeks (range, 6–171), 6 pts. survived > 6 months and 3 are alive 6, 7 and 40 months from the reovirus injection. The mdn TTP was 4.3 weeks (range: 3.4–39). Conclusions: A MTD was not reached. The intratumoral administration or reovirus was well tolerated in patients with recurrent MGs. Phase 2 studies in MGs are planned. [Table: see text]
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Jakacki RI, Tersak J, Blaney S, Krailo M, Hamilton M, Dancy J, Gilbertson R, Ingle A, Adamson PC. A pediatric phase I trial and pharmacokinetic (PK) study of erlotinib (ERL) followed by the combination of ERL with temozolomide (TMZ): A Children’s Oncology Group Study. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.9015] [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
9015 Background: EGFR is potently inhibited by ERL. Aberrant cell signaling via the EGFR family has been implicated in the development of several human cancers, including certain pediatric solid tumors. Methods: A phase I dose escalation study in children with refractory solid tumors was conducted to define the maximal tolerated dose (MTD) and dose limiting toxicities (DLTs) of single agent ERL, determine the tolerability of the combination of ERL and TMZ, and to determine the PK of ERL. Pts received single agent ERL qd × 28 d followed by ERL qd continuously in combination with TMZ 180 mg/m2/day × 5d. Cycles were repeated q 28 d. ERL was initially administered using the IV formulation given orally. The tablet form was subsequently studied at the MTD to further evaluate PK. Results: 46 pts (36 fully evaluable for toxicity) median age 11.5 yrs (range 3–20 yrs), were enrolled in cohorts of 3–6 pts at ERL doses of 35, 50, 65, 85 and 110 mg/m2/d. At the 110 mg/m2/day dose level, 2/4 pts had DLT (1 rash, 1 hyperbilirubinemia). In the expanded cohort at the MTD of 85 mg/m2/d, (n=21), 3 pts had DLT (2 rash, 1 diarrhea). Non-DLTs observed during the single agent cycle included diarrhea (n=14), rash (n=9), hyperbilirubinemia (n=7), neutropenia and/or thrombocytopenia (n=5). 1 pt with a soft tissue sarcoma had a minor response after 28d of single agent ERL, continuing to a PR by cycle 4. 3 pts (2 neuroblastoma, 1 neurocytoma) had prolonged responses (13–20+ months) to the combination. Oral administration of the IV formulation resulted in a higher Cmax and a lower Cmin compared to the adult data using tablets. Median apparent clearance was 2.85 (range 1.61–6.37) L/hr/m2 with a terminal half of 8.45 (5.1–27.1) hr. No PK interaction was observed between ERL and TMZ and the combination was well tolerated. Conclusions: The pediatric recommended phase 2 dose of ERL of 85 mg/m2/day, either alone or in combination with TMZ, is well tolerated in children. A COG phase 2 trial is planned. [Table: see text]
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Caprilli R, Gassull MA, Escher JC, Moser G, Munkholm P, Forbes A, Hommes DW, Lochs H, Angelucci E, Cocco A, Vucelic B, Hildebrand H, Kolacek S, Riis L, Lukas M, de Franchis R, Hamilton M, Jantschek G, Michetti P, O'Morain C, Anwar MM, Freitas JL, Mouzas IA, Baert F, Mitchell R, Hawkey CJ. European evidence based consensus on the diagnosis and management of Crohn's disease: special situations. Gut 2006; 55 Suppl 1:i36-58. [PMID: 16481630 PMCID: PMC1859996 DOI: 10.1136/gut.2005.081950c] [Citation(s) in RCA: 328] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This third section of the European Crohn's and Colitis Organisation (ECCO) Consensus on the management of Crohn's disease concerns postoperative recurrence, fistulating disease, paediatrics, pregnancy, psychosomatics, extraintestinal manifestations, and alternative therapy. The first section on definitions and diagnosis reports on the aims and methods of the consensus, as well as sections on diagnosis, pathology, and classification of Crohn's disease. The second section on current management addresses treatment of active disease, maintenance of medically induced remission, and surgery of Crohn's disease.
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Haggarty P, Wood M, Ferguson E, Hoad G, Srikantharajah A, Milne E, Hamilton M, Bhattacharya S. Fatty acid metabolism in human preimplantation embryos. Hum Reprod 2005; 21:766-73. [PMID: 16311299 DOI: 10.1093/humrep/dei385] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Little is known of fatty acid metabolism in human embryos. This information would be useful in developing metabolic tests of embryo quality and improving embryo culture media. METHODS The fatty acid composition of human embryos and their ability to accumulate 13C labelled fatty acids was assessed in relation to the stage of development using gas-chromatography and combustion-isotope-ratio-mass spectrometry. RESULTS Compared with embryos which did not develop beyond the 4-cell stage, those that did had significantly higher concentrations of the unsaturates, linoleic (12% versus 3%; P=0.02) and oleic (14% versus 7%; P=0.02), and a lower concentration of total saturates (62% versus 77%; P=0.04). There was uptake of both 13C linoleic and palmitic, but the developmental pattern was different for each fatty acid. The net accumulation in pmol/embryo/24h for palmitic was 1 at the 2-cell to <8-cell stage, 4 at the 8-cell-morula stage and negligible at the blastocyst stage. For linoleic, there was little net accumulation at the 2-cell to <8-cell stage, 8 (8-cell-morula stage) and 17 pmol/embryo/24 h (blastocyst stage). CONCLUSION Preimplantation human embryos actively take up individual fatty acids at different rates at different stages of development. The high unsaturated concentration at the later stages of development may be explained by preferential uptake of linoleic acid.
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Wolf J, Lu J, Lum B, Zborowski D, Rakhit A, Clark G, Ptaszynski M, Hamilton M. P-964 What do we know about dosing Tarceva™ based on erlotinib pharmacokinetics in cancer patients? Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)81457-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Clark G, Cagnoni P, Ptaszynski M, Hamilton M, Santabárbara P, Christy-Bittel J, Geiger B, McCarthy S, Onetto N. P-946 Why do non smokers with non-small cell lung cancer (NSCLC) who receive erlotinib have better clinical outcomes than smokers? Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)81439-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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158
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Lum BL, Lu J, Eppler SM, Hamilton M, Wolf J, Rakhit A, Frohna P. The absolute oral bioavailability (BA) of 150-mg and bioequivalence (BE) of six 25- and one 150-mg erlotinib (E) tablets, a small molecule inhibitor of the epidermal growth factor receptor (EGFR), in healthy volunteers. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3163] [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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159
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Mendelson DS, Brewer M, Janicek M, Breitenbach E, Barrett E, Hamilton M, Ptazynski M, van Duym C, Gordon M. Phase I study of OSI-211 (liposomal lurtotecan) in combination with liposomal doxorubicin (LD) every 3 weeks in patients (pts) with advanced solid tumors; final analysis suggests benefit in refractory ovarian cancer (OC). J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2074] [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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160
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Hamilton M. The 1964 trial of antihypertensive treatment. J Hum Hypertens 2005; 19:503. [PMID: 15759022 DOI: 10.1038/sj.jhh.1001853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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161
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Mita CA, Schwartz G, Mita MM, Papadopoulos K, Wood L, de Jonge M, Yancik S, Hamilton M, Santabarbara P, Rowinsky E. A pilot, pharmacokinetic (PK), and pharmacodynamic (PD) study to determine the feasibility of intrapatient dose escalation to tolerable rash and the activity of maximal doses of erlotinib (E) in previously treated patients with advanced non-small cell lung cancer (NSCLC). J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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162
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Calvert H, Twelves C, Ranson M, Anthoney A, Plummer R, Fettner S, Dayaram B, Lum B, Hamilton M, Rakhit A. The effect of erlotinib on CYP3A4 activity, as quantified by the erythromycin breath test and oral midazolam kinetics in cancer patients: Preliminary results. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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163
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Ferguson E, Baumgartner P, Hamilton M. Accidental transection of radial [correction of radical] artery cannula. Anaesth Intensive Care 2005; 33:142-3. [PMID: 15957707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
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164
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Nakashima JK, Kobashigawa JA, Patel JK, Yamada C, Hamilton M. 31 PATIENTS WITH REFRACTORY HYPERCHOLESTEROLEMIA HAVE POOR OUTCOME AFTER HEART TRANSPLANTATION. J Investig Med 2005. [DOI: 10.2310/6650.2005.00005.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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165
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Seid A, Kobashigawa JA, Patel JK, Yamada B, Hamilton M. 107 A MULTIDISCIPLINARY NETWORK OF SOCIAL SUPPORT CAN POSITIVELY AFFECT OUTCOME IN LOWER SOCIOECONOMIC PATIENTS (MEDICAL/MEDICAID INSURANCE) AFTER HEART TRANSPLANTATION. J Investig Med 2005. [DOI: 10.2310/6650.2005.00005.106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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166
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Almeda NP, Odim J, Laks H, Patel JK, Hamilton M, Kobashigawa JA. 251 BYPASSED DONOR HEARTS: THE LONG TERM OUTCOME AFTER HEART TRANSPLANTATION. J Investig Med 2005. [DOI: 10.2310/6650.2005.00005.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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167
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Alison-Mayne S, Patel JK, Kobashigawa JA, Laks H, Hamilton M. 108 THE USE OF MARGINAL DONOR HEARTS IN HEART TRANSPLANT PATIENTS. J Investig Med 2005. [DOI: 10.2310/6650.2005.00005.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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168
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Go SE, Kobashigawa JA, Patel JK, Hamilton M. 252 ASYMPTOMATIC HUMORAL REJECTION DIAGNOSED ON ENDOMYOCARDIAL BIOPSY AFTER HEART TRANSPLANT APPEARS TO HAVE CLINICAL SIGNIFICANCE. J Investig Med 2005. [DOI: 10.2310/6650.2005.00005.251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Abstract
The increasing prevalence of obesity has been mirrored by a parallel increase in the number of commercial weight loss programmes. Research evaluating these programmes is meagre, however, compared to the numbers treated. Reluctance of commercial weight loss programmes to meaningfully evaluate their weight loss efficacy may arise from fear that competitors will use the results against them. Evaluation of commercial weight loss programmes usually progresses from testimonials, often by famous people who were successful, to uncontrolled studies of past participants evaluated either by the programme itself or by an outside entity. The gold standard, however, is a scientifically rigorous, controlled study of the programme conducted by an independent entity. Such a study, published in a peer-reviewed journal, can gain credibility for a programme, as it did with Slim Fast, if the results are positive, or herald the end of the programme, as it was with Simeons human chorionic gonadotropin injection clinics. This review of the evolution of the evaluation process of commercial weight loss programmes leads us to conclude that consumers are likely to demand greater scientific rigour in the future, a change that will favour informed choice and discourage the practice of unrealistic advertising that raises false hopes.
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Gelmon K, Hirte H, Fisher B, Walsh W, Ptaszynski M, Hamilton M, Onetto N, Eisenhauer E. A phase 1 study of OSI-211 given as an intravenous infusion days 1, 2, and 3 every three weeks in patients with solid cancers. Invest New Drugs 2004; 22:263-75. [PMID: 15122073 DOI: 10.1023/b:drug.0000026252.86842.e2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE To define the maximum tolerated dose (MTD), recommended phase II dose (RD) and dose limiting toxicity (DLT) of liposomal lurtotecan, OSI-211 (formerly known as NX211), given as a short intravenous infusion on days 1, 2, and 3 every three weeks. EXPERIMENTAL DESIGN Thirty-seven patients were enrolled and treated in a dose escalation study from a starting dose of 0.15 mg/m(2) daily x 3 to 2.1 mg/m(2) daily x 3. Detailed pharmacokinetic analyses of blood were done on both days 1 and 3 of the first cycle and toxicity was monitored. RESULTS Two MTDs were defined; one for patients defined as minimally pretreated and one for those heavily pretreated. Dose limiting toxicity was myelosuppression: primarily thrombocytopenia although neutropenia was also noted. The MTD was 2.1 mg/m(2)/d (total dose of 6.3 mg/m(2)) in minimally pretreated patients and 1.8 mg/m(2)/d (5.4 mg/m(2) total dose) in heavily pretreated patients. Pharmacokinetics revealed that AUC and C (max) increased with dose and were significantly higher than that of free lurtotecan (AUC approx. 100 fold higher). The half life and duration of the active lactone form were also significantly longer than historical data on free drug. Two partial responses were seen, one each in a patient with breast and ovarian cancer. CONCLUSIONS Two Phase II recommended doses were established for OSI-211 given as a daily x 3 schedule every three weeks. The recommended phase II dose is 1.8 mg/m(2) daily x 3 for minimally pretreated patients and 1.5 mg/m(2) for those heavily pretreated. Phase II studies should be initiated in sensitive tumours.
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Petty WJ, Dragnev KH, Memoli VA, Davis TH, Nugent WC, Williams IR, Iwata KK, Hamilton M, Rigas JR, Dmitrovsky E. Cyclin D1 repression as a marker of erlotinib response in aerodigestive tract cancers. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.3093] [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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172
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Porterfield BW, Dragovich T, Patnaik A, Rowinsky E, Huberman M, Clinebell T, Hamilton M, Zitelli A, Nadler P, Wood D. Erlotinib + gemcitabine in patients with unresectable pancreatic carcinoma: Results from a phase IB trial. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.4110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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173
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Go SE, Almeda NP, Hamilton M, Kobashigawa JA. 511 SUCCESS OF GERIATRIC HEART TRANSPLANTATION. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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174
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Sue E, Marquez A, Kobashigawa E, Hamilton M, Kobashigawa JA. 515 THE DEVELOPMENT OF LEFT VENTRICULAR HYPERTROPHY: NOT A MARKER FOR POOR OUTCOME AFTER HEART TRANSPLANTATION. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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175
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Marquez A, Sue E, Kobashigawa E, Hamilton M, Kobashigawa JA. 516 THE EFFECTS OF HIGH BLOOD PRESSURE ON OUTCOME AFTER HEART TRANSPLANTATION. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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176
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Almeda NP, Cogert G, Lee P, Go SE, Hamilton M, Kobashigawa JA. 512 CONCERN OF CORTICOSTEROID WEANING AFTER HEART TRANSPLANTATION. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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177
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Nakashima J, Marquez A, Oeser BT, Hamilton M, Kobashigawa JA. 513 EARLY DEVELOPMENT OF CARDIAC ALLOGRAFT VASCULOPATHY HAS POOR OUTCOME AFTER HEART TRANSPLANTATION. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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178
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Abbas R, Fettner S, Riek M, Davis S, Hamilton M, Frohna P, Rakhit A. 556 Clinical pharmacokinetics of erlotinib in healthy subjects. EJC Suppl 2003. [DOI: 10.1016/s1359-6349(03)90588-x] [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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179
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Hayden J, Pires J, Roy S, Hamilton M, Moore GJ. Discovery and design of novel inhibitors of botulinus neurotoxin A: targeted 'hinge' peptide libraries. J Appl Toxicol 2003; 23:1-7. [PMID: 12518330 DOI: 10.1002/jat.870] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Intoxication by the zinc protease botulinus neurotoxin A (BoNT-A) results from cleavage of a single Q-R bond in the neuronal protein SNAP-25, which disables the docking mechanism required for neurotransmitter release. In the present study, potential inhibitors of BoNT-A were assessed from their effects on the BoNT-A cleavage of a synthetic 17-mer peptide (SNAP-25, residues 187-203) spanning the Q-R cleavage site. Compounds that inhibited BoNT-A included thiols (zinc chelators) such as dithiothreitol, dimercaptopropanesulfonic acid, mercaptosuccinic acid and captopril. In addition, compounds containing multiple acidic functions, such as the SNARE motif V2 (ELDDRADALQ), the tripeptide Glu-Glu-Glu and the steroid glycoside glycyrrhizic acid, were effective inhibitors. 'Hinge' peptide mini-libraries (PMLs) having the structure acetyl-X(1)-X(2)-linker-X(3)-X(4)-NH(2) or X(1)-X(2)-linker-X(3), where X(1)-X(4) were mixtures of selected amino acids and the flexible linker was 4-aminobutyric acid, also provided effective inhibition. Targeted PMLs containing the acidic amino acids Asp and Glu, the scissile-bond amino acids Gln and Arg and the zinc chelators His and Cys produced pronounced inhibition of BoNT-A. Deconvolution of these libraries will provide novel ligands with improved inhibitory potency as leads in the design of peptide mimetics to treat BoNT poisoning.
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Gazvani R, King PM, Thompson WD, Noble DW, Hamilton M. Haemangiopericytoma of the sigmoid mesocolon. An unexpected finding during laparoscopic tubal evaluation. J OBSTET GYNAECOL 2002; 22:563-4. [PMID: 12521439 DOI: 10.1080/014436102760298926] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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181
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Tran T, McGuire J, Malcolm C, Hamilton M, Johnson D. Incidence of Delayed Intracranial Hemorrhage in Children. Paediatr Child Health 2002. [DOI: 10.1093/pch/7.suppl_a.53aa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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182
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Grocott M, Hamilton M, Bennett D, Rowan K. Perioperative increase in global blood flow to explicit defined goals and outcomes following surgery. THE COCHRANE DATABASE OF SYSTEMATIC REVIEWS 2002. [DOI: 10.1002/14651858.cd004082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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183
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Jeanes AC, Murray D, Davidson B, Hamilton M, Watkinson AF. Case report: hepatic and retro-peritoneal endometriosis presenting as obstructive jaundice with ascites: a case report and review of the literature. Clin Radiol 2002; 57:226-9. [PMID: 11952319 DOI: 10.1053/crad.2001.0667] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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184
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Meyers BS, Klimstra SA, Gabriele M, Hamilton M, Kakuma T, Tirumalasetti F, Alexopoulos GS. Continuation treatment of delusional depression in older adults. Am J Geriatr Psychiatry 2002; 9:415-22. [PMID: 11739068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Delusional depression responds poorly to acute antidepressant monotherapy but appears to respond to intensive combination pharmacotherapy, however with poor short-term outcomes after initial improvement, particularly in later life. The authors compared the efficacy and safety of continuation combination therapy to monotherapy among older patients after remission from a delusional depression. Twenty-nine older adults with SCID-diagnosed major depression with delusions received continuation treatment with nortriptyline-plus-perphenazine or nortriptyline-plus-placebo under randomized double-blind conditions after achieving remission after ECT. Of the 28 subjects included in efficacy analyses, 25% suffered relapses. The relapse frequency was nonsignificantly greater in combination therapy than in monotherapy subjects. However, combination subjects had significantly more extrapyramidal symptoms, an increased incidence of tardive dyskinesia, and a greater number of falls. Continuation treatment with a conventional antipsychotic does not decrease relapse rates but is associated with significant untoward adverse events in older persons after recovery from a delusional depression.
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185
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Stewart L, Hamilton M, McTavish A, Fitzmaurice A, Graham W. Randomized controlled trial comparing couple satisfaction with appointment and telephone follow-up consultation after unsuccessful IVF/ICSI treatment. HUM FERTIL 2002; 4:249-55. [PMID: 11719721 DOI: 10.1080/1464727012000199611] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Couples undergoing in vitro fertilization and intracytoplasmic sperm injection (IVF/ICSI) at Aberdeen Maternity Hospital come from a wide geographical area. Increasingly, telephone discussions after unsuccessful treatment have replaced appointments for those who do not live locally. The aim of this study was to compare patient satisfaction with telephone follow-up discussions versus clinic appointments. Couples were separated into those undergoing their first treatment cycle (100 couples) and those undergoing their second or subsequent treatment cycle (85 couples), and then randomized to either a telephone or appointment follow-up. Satisfaction was assessed by a postal questionnaire and analysis conducted on an 'intention to treat' basis. An overall response rate of 91% was achieved. Analysis indicated no statistically significant difference between telephone and appointment groups with regard to the degree of satisfaction. However, there was an association between the type of follow-up and the duration of discussion (P < 0.001): telephone follow-up discussions were significantly shorter than appointment follow-ups. There is the potential for significant savings in costs, both to the service and to patients, by providing telephone follow-up consultations. The savings may be achieved without compromising patient satisfaction as long as clinic appointments remain available as an option for those couples who prefer them.
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186
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Patel B, Marelli D, Patel J, Tsai FC, Moriguchi J, Fonarow G, Hamilton M, Ardehali A, Esmailian F, Plunkett M, Hage A, Kobashigawa J, Laks H. Heart transplantation in patients with diabetes mellitus in the current era. J Heart Lung Transplant 2002. [DOI: 10.1016/s1053-2498(01)00594-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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187
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Evangelista L, Dracup K, Doering L, Kobashigawa J, Hamilton M, Fonarow G. Quality of life in female heart transplant candidates and recipients. J Heart Lung Transplant 2002. [DOI: 10.1016/s1053-2498(01)00503-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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188
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Hamilton M. Opposition to the Contagious Diseases Act, 1864-1886. ALBION 2001; 10:14-27. [PMID: 11614153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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189
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190
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Marelli D, Laks H, Bresson J, Houston E, Fazio D, Tsai FC, Hamilton M, Moriguchi J, Fonarow GC, Ardehali A, Camara R, Burch C, Alejos JC, George B, Kawata N, Kobashigawa J. Sixteen-year experience with 1,000 heart transplants at UCLA. CLINICAL TRANSPLANTS 2001:297-310. [PMID: 11512323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
1. The consecutive pre- and post-1994 eras have demonstrated improved survival for all age groups. This is linked to improved preservation methods, surgical technique and immunosuppression agents. 2. The use of marginal donor hearts for Status I and alternate elderly patients has followed the model of matching donor and recipient risk without affecting patient outcome and minimized the use of implantable assist devices. 3. A donor history of systemic gram-negative infection, hypertension, or traumatic intracranial bleeds was an important marker for risk. Younger age and shorter ischemia time could compensate for other hazards. 4. Heart transplantation in carefully selected elderly recipients yielded clinical results similar to those of younger patients with less rejection. 5. An adult alternate recipient list proved useful to prevent diversion of standard donors away from younger recipients. 6. Retransplantation for TCAD is acceptable but much less satisfactory for acute graft failure. 7. Trends show an increase in the use of implantable devices; refinement in technology for mechanical assist and replacement is forthcoming.
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191
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Morley R, Grover SR, Kilpatrick N, Hamilton M. Retrospective ethical approval. Med J Aust 2001; 175:286-7. [PMID: 11587269 DOI: 10.5694/j.1326-5377.2001.tb143576.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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192
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Figg WD, Arlen P, Gulley J, Fernandez P, Noone M, Fedenko K, Hamilton M, Parker C, Kruger EA, Pluda J, Dahut WL. A randomized phase II trial of docetaxel (taxotere) plus thalidomide in androgen-independent prostate cancer. Semin Oncol 2001; 28:62-6. [PMID: 11685731 DOI: 10.1016/s0093-7754(01)90157-5] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
New therapeutic alternatives are needed to improve outcomes in patients with androgen-independent prostate cancer (AIPC). For several years, researchers at the National Cancer Institute have been interested in elucidating the importance of angiogenesis in the pathogenesis of prostate cancer and in identifying inhibitors of this process. Thalidomide has been shown to inhibit the ability of tumors to recruit new blood vessels. In a recent phase II trial of thalidomide in AIPC, 28% of patients achieved a prostate-specific antigen (PSA) decrease of >40%. The taxane docetaxel also produces PSA and measurable disease responses when used as monotherapy or as a component of combination chemotherapy for AIPC. Thus, based on the single-agent activity of thalidomide and docetaxel, we initiated a randomized phase II study of weekly docetaxel with or without thalidomide, 200 mg at bedtime, in patients with chemotherapy-naive metastatic AIPC. Docetaxel, 30 mg/m(2) intravenously, was administered every 7 days for 3 weeks, followed by a 1-week rest period. Both regimens have been well tolerated among the first 59 treated patients, with a near absence of grade (3/4) myelosuppression. Fatigue, hyperglycemia, and pulmonary toxicity were seen in both groups. Thrombotic events have been seen in the combination arm. Thirty-five percent (6 of 17) of the patients receiving docetaxel alone and 53% (19 of 36) of those receiving docetaxel and thalidomide have had a PSA decrease of at least 50%. Combining a cytotoxic agent with an angiogenesis inhibitor is a promising area of investigation for prostate cancer management.
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193
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Figg WD, Dahut W, Duray P, Hamilton M, Tompkins A, Steinberg SM, Jones E, Premkumar A, Linehan WM, Floeter MK, Chen CC, Dixon S, Kohler DR, Krüger EA, Gubish E, Pluda JM, Reed E. A randomized phase II trial of thalidomide, an angiogenesis inhibitor, in patients with androgen-independent prostate cancer. Clin Cancer Res 2001; 7:1888-93. [PMID: 11448901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
PURPOSE Thalidomide is a potent teratogen that causes dysmelia in humans. Recently, in vitro data suggested that it inhibits angiogenesis. Prostate cancer is dependent on the recruitment of new blood vessels to grow and metastasize. Based on those data, we initiated a Phase II trial of thalidomide in patients with metastatic androgen-independent prostate cancer. EXPERIMENTAL DESIGN This was an open-label, randomized Phase II study. Thalidomide was administered either at a dose of 200 mg/day (low-dose arm) or at an initial dose of 200 mg/day that escalated to 1200 mg/day (high-dose arm). RESULTS A total of 63 patients were enrolled onto the study (50 patients on the low-dose arm and 13 patients on the high-dose arm). Serum prostate-specific antigen (PSA) decline of > or = 50% was noted in 18% of patients on the low-dose arm and in none of the patients on the high-dose arm. Four patients were maintained for > 150 days. The most prevalent complications were constipation, fatigue, neurocortical, and neurosensory. CONCLUSION Thalidomide, an antiangiogenesis agent, has some activity in patients with metastatic prostate cancer who have failed multiple therapies. A total of 27% of all patients had a decline in PSA of > or = 40%, often associated with an improvement of clinical symptoms. Because our preclinical studies had shown that thalidomide increases PSA secretion, we believe that the magnitude of PSA decline seen in our trial justifies further study.
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194
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King AJ, Wireman RS, Hamilton M, Marshall MS. Phosphorylation site specificity of the Pak-mediated regulation of Raf-1 and cooperativity with Src. FEBS Lett 2001; 497:6-14. [PMID: 11376654 DOI: 10.1016/s0014-5793(01)02425-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The p21-activated kinase, Pak, has recently been shown to phosphorylate Raf-1 on serine 338 (S338), a critical regulatory residue. The specificity requirements for Pak-mediated phosphorylation of S338 were examined by substitution analysis of Raf-1 peptides and conserved region 3 (CR3) proteins. Phosphorylation was found to be very sensitive to alterations in amino acid side chains proximal to S338. Loss of N-terminal arginines resulted in decreased peptide phosphorylation while loss of these residues, as well as C-terminal glutamates and bulky C-terminal hydrophobic residues, decreased phosphorylation of the CR3 protein. Phosphorylation of Raf-1 on tyrosine 341 is significant in epidermal growth factor- and Src-mediated signaling, suggesting that cooperativity may exist between Pak and Src phosphorylation of Raf-1. Purified Pak and Src were found not to be cooperative in phosphorylating peptides or purified CR3 protein. However, the phosphorylation of Raf-1 S338 by Pak was increased in the presence of Src. The complexity of this signaling module could thus account for the different levels of Raf-1 activation required for fulfillment of different biological roles within the cell.
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Hayden J, Pires J, Hamilton M, Moore G. Novel inhibitors of botulinus neurotoxin "A" based on variations of the SNARE motif. PROCEEDINGS OF THE WESTERN PHARMACOLOGY SOCIETY 2001; 43:71-4. [PMID: 11056961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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196
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Larratt LM, Hamilton M, Coupland R, Preiksaitis JK. Recurrent Epstein-Barr virus associated disease in a cardiac transplant patient: evolution from plasmacytic hyperplasia to diffuse large cell lymphoma. Transpl Infect Dis 2001; 3:119-23. [PMID: 11400706 DOI: 10.1034/j.1399-3062.2001.003002119.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An Epstein-Barr virus (EBV)-seronegative 31-year-old male underwent cardiac transplantation in 1991 for congenital cardiomyopathy. He presented with a protracted course of waxing and waning lymphadenopathy beginning four years after transplantation with eventual progression to a fulminant EBV-positive large cell lymphoma eight years after transplantation. Risk factors for the development of post-transplant lymphoproliferative disease in this patient, the importance of a standardized approach to pathology in assessing therapeutic options, and the management strategies used are discussed.
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197
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Smith M, Dyson R, Hale T, Hamilton M, Kelly J, Wellington P. The effects of restricted energy and fluid intake on simulated amateur boxing performance. Int J Sport Nutr Exerc Metab 2001; 11:238-47. [PMID: 11426438 DOI: 10.1123/ijsnem.11.2.238] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This study examined the effects of serial reductions in energy and fluid intake on two simulated boxing performances separated by 2 days recovery. Eight amateur boxers (age: 23.6 +/- 3.2 years; height 175 +/- 5 cm; body mass [BM] 73.3 +/- 8.3 kg [Mean +/- SD]) performed two simulated boxing bouts (BB) under normal (N-trial) and restricted (R-trial) diets in a counterbalanced design over 5 days. The trials were separated by a 9-day period of normal dietary behavior (X-trial). BM was recorded on days 1, 3, and 5 of each trial. Simulated bouts of three, 3-min rounds with 1-min recovery were completed on days 3 (BB1) and 5 (BB2) of each 5-day trial. Punching force (N) was recorded from 8 sets of 7 punches by a purpose-built boxing ergometer. Heart rate (fC) was monitored continuously (PE3000 Polar Sports Tester, Kempele, Finland), and blood lactate (BLa) and glucose (BG) were determined 4-min post-performance (2300 StaPlus, YSI, Ohio). Energy and fluid intakes were significantly lower in the R-trial (p < .05). Body mass was maintained during the N-trial but fell 3% (p < .05) during the R-trial. There were no significant differences in end-of-bout fC or post-bout BG, but BLa was higher in the N- than the R-trial (p < .05). R-trial punching forces were 3.2% and 4.6% lower, respectively, compared to the corresponding N-trial bouts, but the differences did not reach statistical significance. These results suggest that energy and fluid restrictions in weight-governed sports do not always lead to a significant decrease in performance, but because of the small sample size and big variations in individual performances, these findings should be interpreted with care.
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198
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Hamilton M, Liao J, Cathcart MK, Wolfman A. Constitutive association of c-N-Ras with c-Raf-1 and protein kinase C epsilon in latent signaling modules. J Biol Chem 2001; 276:29079-90. [PMID: 11358964 DOI: 10.1074/jbc.m102001200] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Phorbol ester stimulation of the MAPK cascade is believed to be mediated through the protein kinase C (PKC)-dependent activation of Raf-1. Although several studies suggest that phorbol ester stimulation of MAPK is insensitive to dominant-negative Ras, a requirement for Ras in Raf-1 activation by PKC has been suggested recently. We now demonstrate that in normal, quiescent mouse fibroblasts, endogenous c-N-Ras is constitutively associated with both c-Raf-1 and PKC epsilon in a biochemically silent, but latent, signaling module. Chemical inhibition of novel PKCs blocks phorbol 12-myristate 13-acetate (PMA)-mediated activation of MAPKs. Down-regulation of PKC epsilon protein levels by antisense oligodeoxyribonucleotides blocks MAPK activation in response to PMA stimulation, demonstrating that PKC epsilon activity is required for MAPK activation by PMA. c-Raf-1 activity in immunoprecipitated c-N-Ras.c-Raf-1.PKC epsilon complexes is stimulated by PMA and is inhibited by GF109203X, thereby linking c-Raf-1 activation in this complex to PKC activation. These observations suggest that in quiescent cells Ras is organized into ordered, inactive signaling modules. Furthermore, the regulation of the MAPK cascade by both Ras and PKC is intimately linked, converging at the plasma membrane through their association with c-Raf-1.
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199
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Agarwal ML, Ramana CV, Hamilton M, Taylor WR, DePrimo SE, Bean LJ, Agarwal A, Agarwal MK, Wolfman A, Stark GR. Regulation of p53 expression by the RAS-MAP kinase pathway. Oncogene 2001; 20:2527-36. [PMID: 11420662 DOI: 10.1038/sj.onc.1204353] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2000] [Revised: 02/01/2001] [Accepted: 02/02/2001] [Indexed: 12/19/2022]
Abstract
Activation of MAP kinase leads to the activation of p53-dependent pathways, and vice-versa. Although the amount of p53 protein increases in response to MAP kinase-dependent signaling, the basis of this increase is not yet fully understood. We have isolated the mutant cell line AP14, defective in p53 expression, from human HT1080 fibrosarcoma cells, which have an activated ras allele. The expression of p53 mRNA and protein is approximately 10-fold lower in AP14 cells than in the parental cells. The high constitutive phosphorylation and activities of the MAP kinases ERK1 and ERK2 in HT1080 cells are greatly reduced in AP14 cells, although the levels of these proteins are unchanged, suggesting that the defect in the mutant cells affects the steady-state phosphorylation of ERK1 and ERK2. Overexpression of ERK2 in AP14 cells restored both MAP kinase activity and p53 expression, and incubation of the mutant cells with the phosphatase inhibitor orthovanadate resulted in strong coordinate elevation of MAP kinase activity and p53 expression. The levels of expression of the p53-regulated gene p21 parallel those of p53 throughout, showing that basal p21 expression depends on p53. The levels of p53 mRNA increased by 5-8-fold when activated ras was introduced into wild-type cells, and the levels of the p53 and p21 proteins decreased substantially in wild-type cells treated with the MEK inhibitor U0216. We conclude that MAP kinase-dependent pathways help to regulate p53 levels by regulating the expression of p53 mRNA.
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Hamilton M, Bhattacharya S. Should ICSI be the treatment for all cases of in-vitro conception? Hum Reprod 2001; 16:801-2. [PMID: 11278237 DOI: 10.1093/humrep/16.4.801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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