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Romano O, Stout D, Mendrek A. Age and gender differences in coping and mental health during and post COVID-19 lockdown. Eur Psychiatry 2022. [PMCID: PMC9566806 DOI: 10.1192/j.eurpsy.2022.525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction As a reaction to growing number of COVID-19 cases in Quebec, the government issued a lockdown to prevent further spread of the virus in March 2020. The novelty of the imposed restrictions warranted an assessment of adult coping and potential effects on anxiety and depressive symptoms. Objectives The purpose of the present study was to evaluate methods of coping employed during Quebec’s lockdown and their potential ramifications on anxiety and depressive symptoms post-lockdown in Quebec. Methods In a retrospective longitudinal design, two-hundred and twenty-three (n = 223) adults (65.5% female; 34.5% male) completed the study online. They were asked to fill out several questionnaires and provide demographic information. Results Analysis revealed significant improvement in anxiety symptoms post-lockdown relative to during lockdown across the entire sample. Depressive symptoms also improved significantly across the sample, but the difference was less pronounced among 18–34-year-olds than those 35 and above. Male adults aged 18-34 utilized maladaptive coping strategies to the greatest extent. Moreover, maladaptive coping was significantly associated with anxiety and depressive symptoms and predicted depressive symptoms post-lockdown. Further investigation revealed that young adult males differed from females in their use of substances and self-blame to cope. Conclusions Overall, the data suggest that the lockdown adversely affected anxiety and depressive symptoms among the general population. Furthermore, young adults, particularly males, were most susceptible to depressive symptomatology due in part to their methods of coping with the novel context. A follow-up study is warranted. Future studies should also seek to recruit individuals whose self-identified gender is non-traditional (e.g., non-binary). Disclosure No significant relationships.
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Breen MS, Isakov V, Prince S, McGuinness K, Egeghy PP, Stephens B, Arunachalam S, Stout D, Walker R, Alston L, Rooney AA, Taylor KW, Buckley TJ. Integrating Personal Air Sensor and GPS to Determine Microenvironment-Specific Exposures to Volatile Organic Compounds. Sensors (Basel) 2021; 21:s21165659. [PMID: 34451101 PMCID: PMC8402344 DOI: 10.3390/s21165659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/11/2021] [Accepted: 08/17/2021] [Indexed: 11/16/2022]
Abstract
Personal exposure to volatile organic compounds (VOCs) from indoor sources including consumer products is an understudied public health concern. To develop and evaluate methods for monitoring personal VOC exposures, we performed a pilot study and examined time-resolved sensor-based measurements of geocoded total VOC (TVOC) exposures across individuals and microenvironments (MEs). We integrated continuous (1 min) data from a personal TVOC sensor and a global positioning system (GPS) logger, with a GPS-based ME classification model, to determine TVOC exposures in four MEs, including indoors at home (Home-In), indoors at other buildings (Other-In), inside vehicles (In-Vehicle), and outdoors (Out), across 45 participant-days for five participants. To help identify places with large emission sources, we identified high-exposure events (HEEs; TVOC > 500 ppb) using geocoded TVOC time-course data overlaid on Google Earth maps. Across the 45 participant-days, the MEs ranked from highest to lowest median TVOC were: Home-In (165 ppb), Other-In (86 ppb), In-Vehicle (52 ppb), and Out (46 ppb). For the two participants living in single-family houses with attached garages, the median exposures for Home-In were substantially higher (209, 416 ppb) than the three participant homes without attached garages: one living in a single-family house (129 ppb), and two living in apartments (38, 60 ppb). The daily average Home-In exposures exceeded the estimated Leadership in Energy and Environmental Design (LEED) building guideline of 108 ppb for 60% of the participant-days. We identified 94 HEEs across all participant-days, and 67% of the corresponding peak levels exceeded 1000 ppb. The MEs ranked from the highest to the lowest number of HEEs were: Home-In (60), Other-In (13), In-Vehicle (12), and Out (9). For Other-In and Out, most HEEs occurred indoors at fast food restaurants and retail stores, and outdoors in parking lots, respectively. For Home-In HEEs, the median TVOC emission and removal rates were 5.4 g h-1 and 1.1 h-1, respectively. Our study demonstrates the ability to determine individual sensor-based time-resolved TVOC exposures in different MEs, in support of identifying potential sources and exposure factors that can inform exposure mitigation strategies.
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Affiliation(s)
- Michael S. Breen
- Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, Durham, NC 27711, USA;
- Correspondence:
| | - Vlad Isakov
- Center for Environmental Measurement and Modeling, U.S. Environmental Protection Agency, Research Triangle Park, Durham, NC 27711, USA; (V.I.); (D.S.); (R.W.); (L.A.)
| | - Steven Prince
- Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, Durham, NC 27711, USA;
| | - Kennedy McGuinness
- Institute for the Environment, University of North Carolina at Chapel Hill, Chapel Hill, NC 27517, USA; (K.M.); (S.A.)
| | - Peter P. Egeghy
- Center for Computational Toxicology and Exposure, U.S. Environmental Protection Agency, Research Triangle Park, Durham, NC 27711, USA; (P.P.E.); (T.J.B.)
| | - Brent Stephens
- Department of Civil, Architectural and Environmental Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA;
| | - Saravanan Arunachalam
- Institute for the Environment, University of North Carolina at Chapel Hill, Chapel Hill, NC 27517, USA; (K.M.); (S.A.)
| | - Dan Stout
- Center for Environmental Measurement and Modeling, U.S. Environmental Protection Agency, Research Triangle Park, Durham, NC 27711, USA; (V.I.); (D.S.); (R.W.); (L.A.)
| | - Richard Walker
- Center for Environmental Measurement and Modeling, U.S. Environmental Protection Agency, Research Triangle Park, Durham, NC 27711, USA; (V.I.); (D.S.); (R.W.); (L.A.)
| | - Lillian Alston
- Center for Environmental Measurement and Modeling, U.S. Environmental Protection Agency, Research Triangle Park, Durham, NC 27711, USA; (V.I.); (D.S.); (R.W.); (L.A.)
| | - Andrew A. Rooney
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institute of Health, Research Triangle Park, Durham, NC 27711, USA; (A.A.R.); (K.W.T.)
| | - Kyla W. Taylor
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institute of Health, Research Triangle Park, Durham, NC 27711, USA; (A.A.R.); (K.W.T.)
| | - Timothy J. Buckley
- Center for Computational Toxicology and Exposure, U.S. Environmental Protection Agency, Research Triangle Park, Durham, NC 27711, USA; (P.P.E.); (T.J.B.)
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Pires da Silva I, Ahmed T, Reijers ILM, Weppler AM, Betof Warner A, Patrinely JR, Serra-Bellver P, Allayous C, Mangana J, Nguyen K, Zimmer L, Trojaniello C, Stout D, Lyle M, Klein O, Gerard CL, Michielin O, Haydon A, Ascierto PA, Carlino MS, Lebbe C, Lorigan P, Johnson DB, Sandhu S, Lo SN, Blank CU, Menzies AM, Long GV. Ipilimumab alone or ipilimumab plus anti-PD-1 therapy in patients with metastatic melanoma resistant to anti-PD-(L)1 monotherapy: a multicentre, retrospective, cohort study. Lancet Oncol 2021; 22:836-847. [PMID: 33989557 DOI: 10.1016/s1470-2045(21)00097-8] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 02/09/2021] [Accepted: 02/15/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Anti-PD-1 therapy (hereafter referred to as anti-PD-1) induces long-term disease control in approximately 30% of patients with metastatic melanoma; however, two-thirds of patients are resistant and will require further treatment. We aimed to determine the efficacy and safety of ipilimumab plus anti-PD-1 (pembrolizumab or nivolumab) compared with ipilimumab monotherapy in patients who are resistant to anti-PD-(L)1 therapy (hereafter referred to as anti-PD-[L]1). METHODS This multicentre, retrospective, cohort study, was done at 15 melanoma centres in Australia, Europe, and the USA. We included adult patients (aged ≥18 years) with metastatic melanoma (unresectable stage III and IV), who were resistant to anti-PD-(L)1 (innate or acquired resistance) and who then received either ipilimumab monotherapy or ipilimumab plus anti-PD-1 (pembrolizumab or nivolumab), based on availability of therapies or clinical factors determined by the physician, or both. Tumour response was assessed as per standard of care (CT or PET-CT scans every 3 months). The study endpoints were objective response rate, progression-free survival, overall survival, and safety of ipilimumab compared with ipilimumab plus anti-PD-1. FINDINGS We included 355 patients with metastatic melanoma, resistant to anti-PD-(L)1 (nivolumab, pembrolizumab, or atezolizumab), who had been treated with ipilimumab monotherapy (n=162 [46%]) or ipilimumab plus anti-PD-1 (n=193 [54%]) between Feb 1, 2011, and Feb 6, 2020. At a median follow-up of 22·1 months (IQR 9·5-30·9), the objective response rate was higher with ipilimumab plus anti-PD-1 (60 [31%] of 193 patients) than with ipilimumab monotherapy (21 [13%] of 162 patients; p<0·0001). Overall survival was longer in the ipilimumab plus anti-PD-1 group (median overall survival 20·4 months [95% CI 12·7-34·8]) than with ipilimumab monotherapy (8·8 months [6·1-11·3]; hazard ratio [HR] 0·50, 95% CI 0·38-0·66; p<0·0001). Progression-free survival was also longer with ipilimumab plus anti-PD-1 (median 3·0 months [95% CI 2·6-3·6]) than with ipilimumab (2·6 months [2·4-2·9]; HR 0·69, 95% CI 0·55-0·87; p=0·0019). Similar proportions of patients reported grade 3-5 adverse events in both groups (59 [31%] of 193 patients in the ipilimumab plus anti-PD-1 group vs 54 [33%] of 162 patients in the ipilimumab group). The most common grade 3-5 adverse events were diarrhoea or colitis (23 [12%] of 193 patients in the ipilimumab plus anti-PD-1 group vs 33 [20%] of 162 patients in the ipilimumab group) and increased alanine aminotransferase or aspartate aminotransferase (24 [12%] vs 15 [9%]). One death occurred with ipilimumab 26 days after the last treatment: a colon perforation due to immune-related pancolitis. INTERPRETATION In patients who are resistant to anti-PD-(L)1, ipilimumab plus anti-PD-1 seemed to yield higher efficacy than ipilimumab with a higher objective response rate, longer progression-free, and longer overall survival, with a similar rate of grade 3-5 toxicity. Ipilimumab plus anti-PD-1 should be favoured over ipilimumab alone as a second-line immunotherapy for these patients with advanced melanoma. FUNDING None.
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Affiliation(s)
- Ines Pires da Silva
- Melanoma Institute Australia, University of Sydney, Sydney, NSW, Australia; Westmead Hospital, Sydney, NSW, Australia; Blacktown Hospital, Sydney, NSW, Australia
| | - Tasnia Ahmed
- Melanoma Institute Australia, University of Sydney, Sydney, NSW, Australia
| | | | - Alison M Weppler
- Peter MacCallum Cancer Centre, University of Melbourne, Melbourne, VIC, Australia
| | | | | | | | - Clara Allayous
- AP-HP Dermatology, INSERM U976, Université de Paris, Saint Louis Hospital, Paris, France
| | - Joanna Mangana
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - Khang Nguyen
- Westmead Hospital, Sydney, NSW, Australia; Blacktown Hospital, Sydney, NSW, Australia
| | - Lisa Zimmer
- Department of Dermatology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Claudia Trojaniello
- Cancer Immunotherapy and Development Therapeutics Unit, Istituto Nazionale Tumori IRCCS Fondazione G Pascale, Napoli, Italy
| | - Dan Stout
- Alfred Hospital, Monash University, Melbourne, VIC, Australia
| | - Megan Lyle
- Cairns Hospital, James Cook University, Cairns, QLD, Australia
| | - Oliver Klein
- Olivia Newton-John Cancer Research Institute, Melbourne, VIC, Australia
| | - Camille L Gerard
- Oncology Department, Lausanne University Hospital, Lausanne, Switzerland
| | - Olivier Michielin
- Oncology Department, Lausanne University Hospital, Lausanne, Switzerland
| | - Andrew Haydon
- Alfred Hospital, Monash University, Melbourne, VIC, Australia
| | - Paolo A Ascierto
- Cancer Immunotherapy and Development Therapeutics Unit, Istituto Nazionale Tumori IRCCS Fondazione G Pascale, Napoli, Italy
| | - Matteo S Carlino
- Melanoma Institute Australia, University of Sydney, Sydney, NSW, Australia; Westmead Hospital, Sydney, NSW, Australia; Blacktown Hospital, Sydney, NSW, Australia
| | - Celeste Lebbe
- AP-HP Dermatology, INSERM U976, Université de Paris, Saint Louis Hospital, Paris, France
| | - Paul Lorigan
- The Christie NHS Foundation Trust, Manchester, UK; Division of Cancer Sciences, University of Manchester, Manchester, UK
| | | | - Shahneen Sandhu
- Peter MacCallum Cancer Centre, University of Melbourne, Melbourne, VIC, Australia
| | - Serigne N Lo
- Melanoma Institute Australia, University of Sydney, Sydney, NSW, Australia
| | | | - Alexander M Menzies
- Melanoma Institute Australia, University of Sydney, Sydney, NSW, Australia; Royal North Shore Hospital, Sydney, NSW, Australia; Mater Hospital, Sydney, NSW, Australia
| | - Georgina V Long
- Melanoma Institute Australia, University of Sydney, Sydney, NSW, Australia; Royal North Shore Hospital, Sydney, NSW, Australia; Mater Hospital, Sydney, NSW, Australia.
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Pires Da Silva I, Ahmed T, Lo S, Reijers IL, Weppler A, Betof Warner A, Patrinely JR, Serra-Bellver P, Lebbe C, Mangana J, Nguyen K, Zimmer L, Ascierto PA, Stout D, Lyle M, Klein O, Gerard CL, Blank CU, Menzies AM, Long GV. Ipilimumab (IPI) alone or in combination with anti-PD-1 (IPI+PD1) in patients (pts) with metastatic melanoma (MM) resistant to PD1 monotherapy. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.15_suppl.10005] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
10005 Background: PD1 induces long-term responses in approximately 30% of MM pts, however 2/3 are resistant (innate or acquired) and will require further treatment. A subset of these pts will benefit from IPI or IPI+PD1, but these pts are yet to be identified. We sought to determine; i) response rate (RR) and survival to IPI+/-PD1 after PD1 progression, and ii) clinical predictors of response and survival to IPI+/-PD1. Methods: MM pts resistant to PD1 and then treated with IPI+/-PD1 were studied. Demographics, disease characteristics and baseline blood parameters were examined. Univariate, multivariate and backward elimination technique analyses were performed to create predictive models of response and overall survival (OS). Results: Of 330 MM pts resistant to PD1 (median time to prog 2.9 months [0.5 – 42.3], 12% adjuvant, 88% metastatic; 70% innate, 30% acquired), 161 (49%) had subsequent IPI and 169 (51%) had IPI+PD1. Characteristics at start of IPI+/-PD1 were similar in IPI vs IPI+PD1 groups (stage M1D 27% vs 34%; elevated LDH 38% vs 40%), except IPI group had more ECOG ≥1 (60% vs 34%) and less BRAF mutation (mut) (21% vs 37%). Median follow-up from start of IPI+/-PD1 was 22.3 months (19.8 - 25.8); RR was 22%, higher in IPI+PD1 (31%) vs IPI (12%) (p < 0.01). PFS and OS at 1 year were 20% and 48%, respectively; better with IPI+PD1 (27%/57%) vs IPI (13%/38%) (p < 0.01). PD1 setting (adjuvant/metastatic) and response did not impact response to IPI+/-PD1. Most pts progressing on adjuvant PD1 had IPI+PD1 (88%) and RR was 33%. Neither the interval between PD1 and IPI+/-PD1 nor use of other drugs affected response to IPI+/-PD1. RR was similar in BRAF WT (23%) vs BRAF mut (RR 21%) pts. In BRAF WT pts, RR was higher with IPI+PD1 vs IPI (38% vs 9%, p < 0.01), while RR was similar with IPI (24%) or IPI+PD1 (19%) in BRAF mut pts. One third of BRAF mut pts had BRAF inhibitors (BRAFi) prior to IPI+/-PD1 and lower RR (13%) vs those without BRAFi (RR = 25%, p > 0.05). High grade (≥G3) toxicity (tox) was similar with IPI+PD1 (30%) or IPI (34%, p = 0.48), and was not associated with response. Stage III/M1A/M1B, normal LDH and treatment with IPI+PD1 were the best predictors of response (AUC = 0.69). These factors, in addition to sex (male), ECOG PS = 0, BRAF mut, progressed/recurred > 3 months on PD1, and absence of bone mets were the best predictors of longer OS (AUC = 0.74). Conclusions: In pts resistant to PD1, IPI+PD1 has higher RR, longer survival, yet similar high grade tox than IPI alone. Predictive models of response & survival will help select pts for IPI+/-PD1 after progressing on PD1.
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Affiliation(s)
| | - Tasnia Ahmed
- Melanoma Institute Australia, Sydney, NSW, Australia
| | - Serigne Lo
- Melanoma Institute Australia, The University of Sydney, Sydney, NSW, Australia
| | | | | | | | | | | | - Celeste Lebbe
- APHP Dermatology and CIC, U976, Université de Paris, Hôpital Saint-Louis, Paris, France
| | | | - Khang Nguyen
- Westmead and Blacktown Hospitals, Sydney, Australia
| | - Lisa Zimmer
- Department of Dermatology, University Hospital, University Duisburg-Essen, Essen, Germany
| | | | | | - Megan Lyle
- Liz Plummer Cancer Centre, Cairns and Hinterland Hospital and Health Service, Cairns, QLD, Australia
| | - Oliver Klein
- Medical Oncology Unit, Austin Health, Heidelberg, Australia
| | - Camille Lea Gerard
- Center of Personalized Oncology, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | | | - Alexander M. Menzies
- Melanoma Institute Australia, University of Sydney, Royal North Shore Hospital, Sydney, Australia
| | - Georgina V. Long
- Melanoma Institute Australia, The University of Sydney, Royal North Shore Hospital, Mater Hospital, Sydney, Australia
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Ahn HJ, Park J, Song K, Na B, Rosanvallon S, Stout D. Radiochemical Analysis of Tritium for ITER Type B Metallic Radwastes. Fusion Science and Technology 2017. [DOI: 10.13182/fst11-a12586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. J. Ahn
- Korea Atomic Energy Research Institute, P.O. Box 105, Yuseong, Daejeon, 305-330, Korea
| | - J. Park
- Korea Atomic Energy Research Institute, P.O. Box 105, Yuseong, Daejeon, 305-330, Korea
| | - K. Song
- Korea Atomic Energy Research Institute, P.O. Box 105, Yuseong, Daejeon, 305-330, Korea
| | - B.C Na
- ITER Organization, 13067 Saint-Paul-lez-Durance Cedex, France
| | - S. Rosanvallon
- ITER Organization, 13067 Saint-Paul-lez-Durance Cedex, France
| | - D. Stout
- ITER Organization, 13067 Saint-Paul-lez-Durance Cedex, France
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Berry-Pusey BN, Chang YC, Prince SW, Chu K, David J, Taschereau R, Silverman RW, Williams D, Ladno W, Stout D, Tsao TC, Chatziioannou A. A semi-automated vascular access system for preclinical models. Phys Med Biol 2013; 58:5351-62. [PMID: 23877111 DOI: 10.1088/0031-9155/58/16/5351] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Murine models are used extensively in biological and translational research. For many of these studies it is necessary to access the vasculature for the injection of biologically active agents. Among the possible methods for accessing the mouse vasculature, tail vein injections are a routine but critical step for many experimental protocols. To perform successful tail vein injections, a high skill set and experience is required, leaving most scientists ill-suited to perform this task. This can lead to a high variability between injections, which can impact experimental results. To allow more scientists to perform tail vein injections and to decrease the variability between injections, a vascular access system (VAS) that semi-automatically inserts a needle into the tail vein of a mouse was developed. The VAS uses near infrared light, image processing techniques, computer controlled motors, and a pressure feedback system to insert the needle and to validate its proper placement within the vein. The VAS was tested by injecting a commonly used radiolabeled probe (FDG) into the tail veins of five mice. These mice were then imaged using micro-positron emission tomography to measure the percentage of the injected probe remaining in the tail. These studies showed that, on average, the VAS leaves 3.4% of the injected probe in the tail. With these preliminary results, the VAS system demonstrates the potential for improving the accuracy of tail vein injections in mice.
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Affiliation(s)
- B N Berry-Pusey
- Crump Institute for Molecular Imaging at UCLA, 570 Westwood Plaza, Los Angeles, CA 90095, USA.
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Abstract
83 participants thought about a white bear before or after trying to suppress the idea. There was no rebound effect (more expression of white-bear thoughts after than before suppression) for either introverts or extraverts.
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Affiliation(s)
- N Bourdon
- Department of Psychology, Bishop's University, Lennoxville, Québec, Canada
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Stout D. Helmets under the updated ARFF standard. Occup Health Saf 2001; 70:34-6, 38. [PMID: 11225014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Tahir SK, Gu WZ, Zhang HC, Leal J, Lee JY, Kovar P, Saeed B, Cherian SP, Devine E, Cohen J, Warner R, Wang YC, Stout D, Arendsen DL, Rosenberg S, Ng SC. Inhibition of farnesyltransferase with A-176120, a novel and potent farnesyl pyrophosphate analogue. Eur J Cancer 2000; 36:1161-70. [PMID: 10854950 DOI: 10.1016/s0959-8049(00)00067-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Farnesylation of Ras is required for its transforming activity in human cancer and the reaction is catalysed by the enzyme farnesyltransferase. Recently, we discovered a novel chemical series of potent farnesyl pyrophosphate (FPP) analogues which selectively inhibited farnesyltransferase. Our most potent compound to date in this series, A-176120, selectively inhibited farnesyltransferase activity (IC(50) 1.2+/-0.3 nM) over the closely related enzymes geranylgeranyltransferase I (GGTaseI) (IC(50) 423+/-1.8 nM), geranylgeranyltransferase II (GGTaseII) (IC(50) 3000 nM) and squalene synthase (SSase) (IC(50)>10000 nM). A-176120 inhibited ras processing in H-ras-transformed NIH3T3 cells and HCT116 K-ras-mutated cells (ED(50) 1.6 and 0.5 microM, respectively). The anti-angiogenic potential of A-176120 was demonstrated by a decrease in Ras processing, cell proliferation and capillary structure formation of human umbilical vein endothelial cells (HUVEC), and a decrease in the secretion of vascular endothelial growth factor (VEGF) from HCT116 cells. In vivo, A-176120 reduced H-ras NIH3T3 tumour growth and extended the lifespan of nude mice inoculated with H- or K-ras-transformed NIH3T3 cells. A-176120 also had an additive effect in combination with cyclophosphamide in nude mice inoculated with K-ras NIH3T3 transformed cells. Overall, our results demonstrate that A-176120 is a potent FPP mimetic with both antitumour and anti-angiogenic properties.
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Affiliation(s)
- S K Tahir
- Cancer Research, Pharmaceutical Product Research Division, Abbott Laboratories, 100 Abbott Park Road, IL 60064, Abbott Park, USA
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Stout D, Petric A, Satyamurthy N, Nguyen Q, Huang SC, Namavari M, Barrio JR. 2Beta-carbomethoxy-3beta-(4- and 2-[18F]fluoromethylphenyl)tropanes: specific probes for in vivo quantification of central dopamine transporter sites. Nucl Med Biol 1999; 26:897-903. [PMID: 10708303 DOI: 10.1016/s0969-8051(99)00073-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Dopamine reuptake transporter binding kinetics of 2beta-carbomethoxy-3beta-(4-[18F]fluoromethylphenyl)tropane (p-FWIN) and 2beta-carbomethoxy-3beta-(2-[18F]fluoromethylphenyl)tropane (o-FWIN) were determined in vervet monkeys using positron emission tomography (PET). Ligand localization was rapid and specific to the striatum with kinetic estimates comparable with those of 11C-labeled WIN 35,428 (CWIN). Binding was more specific with p-FWIN than with CWIN or o-FWIN. The relatively longer half-life of the 18F radiolabel enabled longer acquisition times with p-FWIN, resulting in less variability in the kinetic estimates.
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Affiliation(s)
- D Stout
- Department of Molecular and Medical Pharmacology, UCLA School of Medicine, Los Angeles, California 90095-6948, USA
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12
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Abstract
Participants (N = 509) were tested for backward cued recall of concrete noun pairs illustrated with pictures. Recall was considerably higher when a picture showed an interactive relationship than when the two items were drawn separately. However, with separate pictures in which the stimulus drawing appeared in a color that bore a direct relationship to the response object or when both drawings shared a color that was not related to the response object, recall was higher than with uncolored drawings. Performance was even better when the shared color was associated with the response object, although it remained below that with uncolored interactive pictures. The positive effects of shared colors did not occur with interactive pictures, but recall improved further when the response color appeared either in the stimulus or response portions of the combined drawing. It is concluded that cued recall is mediated by common elements and that the effects are additive, at least with separate pictures.
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Affiliation(s)
- S J McKelvie
- Department of Psychology, Bishop's University, Lennoxville, Quebec, Canada
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Abstract
Undergraduate university students (N = 103) participated in a study of the relationship between test anxiety and the variables of trait anxiety, self-esteem, locus of control, mental ability, and gender. Results indicated bivariate associations between total test anxiety and the other measures except for mental ability. Further analyses revealed independent relationships between the "worry" component of test anxiety and the variables of trait anxiety, internality, chance, and mental ability. We also found independent associations between the "emotionality" aspect of test anxiety and the measures of trait anxiety and chance.
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Affiliation(s)
- A F de Man
- Department of Psychology, Bishop's University, Lennoxville, Quebec, Canada
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Stout D, Stuart S. E. G. Boring's review of Brigham's A study of American intelligence: a case-study in the politics of reviews. Soc Stud Sci 1991; 21:133-142. [PMID: 11622605 DOI: 10.1177/030631291021001007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In 1923, Carl Brigham published A Study of American Intelligence. E. G. Boring was asked by R. M. Yerkes to review the book; Boring agreed, saying that he would write a favourable review. Instead, he published a highly critical review in the New Republic. Contrary to the impression that psychologists and educators in the main supported Brigham's book, Boring's assessment of American Intelligence was in step with other reviews at that time. What remains open to question is why Boring agreed in the first place to write a positive review. Although this question remains unresolved, we lay out the specific details that led Boring to alter his review. Indeed, it is the `small' politics among professionals, and not the social politics of race, that persuaded Boring to pan Brigham's book.
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Artru AA, Stout D, Katz RA, Freund PR. EEG Suppression and Increased Blood-Brain Barrier Permeability Following Intracarotid Injection of Iothalamate Meglumine (Conray) in Dogs. J Neurosurg Anesthesiol 1990; 2:105-13. [PMID: 15815329 DOI: 10.1097/00008506-199006000-00008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Over a 2-year period we observed three cases of unilateral suppression of the electroencephalogram (EEG) lasting from 45 s to 4 min following intracarotid injection of 60% iothalamate meglumine (Conray) for intraoperative carotid angiography postendarterectomy. As a result of these cases we undertook studies in 11 dogs anesthetized with isoflurane to examine causes of EEG suppression following intracarotid contrast medium injection. In group 1 (n = 6) cerebral blood flow (CBF), the cerebral metabolic rate for oxygen (CMRO2), EEG activity, and permeability of the blood-brain barrier (BBB) were determined. In group 2 (n = 5) cerebrospinal fluid (CSF) pressure, EEG activity, and BBB permeability were determined. Intracarotid injection of 5 ml of 60% Conray was associated with unilateral EEG suppression and increased BBB permeability in 1 of 11 dogs. Injection of contrast material caused no change in CBF or CMRO2 and caused a statistically significant but physiologically unimportant increase of CSF pressure (from 12 +/- 1 to 16 +/- 1 cm H2O, mean +/- SEM). It is concluded that EEG suppression following intracarotid injection of Conray is a rare event. It seems unlikely that EEG suppression resulted from cerebral ischemia or hypoxia, but rather was associated with increased BBB permeability. Increased BBB permeability likely was caused by the osmotic effect of Conray and not by hypoxic-ischemic microvascular injury or loss of autoregulation of CBF.
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Affiliation(s)
- A A Artru
- Department of Anesthesiology, University of Washington School of Medicine, Seattle, Washington, USA
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Greenberg A, Bozzelli JW, Cannova F, Forstner E, Giorgio P, Stout D, Yokoyama R. Correlations between lead and coronene concentrations at urban, suburban, and industrial sites in New Jersey. Environ Sci Technol 1981; 15:566-570. [PMID: 22283949 DOI: 10.1021/es00087a007] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Abstract
Infiltrating ductal carcinoma of the breast occurred in a total of six men from two families. In one family specimens from three men who had prophylactic mastectomies revealed focal intraductal hyperplasia, suggesting a familial tendency toward proliferation of mammary-duct epithelium. In the other family, benign and malignant breast lesions also developed in several women. Preliminary data suggest elevated urinary oestrogen excretion in three men from these families, implicating a defect in oestrogen production or metabolism in the pathogenesis of male breast neoplasms.
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Stout D. Problems of rubella control. N Engl J Med 1970; 283:819. [PMID: 5456247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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