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Wynne-Jones G, Archer L, Snell K, Stynes S, Dunn K, Foster N, van der Windt D, Hill J. The development of individualised work absence prediction models in patients with neck and/or low back pain. Physiotherapy 2021. [DOI: 10.1016/j.physio.2021.10.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Mc Gee D, Archer L, Parkes R, Fleming GTA, Santos HM, Touzet N. The role of methyl jasmonate in enhancing biomass yields and bioactive metabolites in Stauroneis sp. (Bacillariophyceae) revealed by proteome and biochemical profiling. J Proteomics 2021; 249:104381. [PMID: 34536592 DOI: 10.1016/j.jprot.2021.104381] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 09/10/2021] [Accepted: 09/11/2021] [Indexed: 12/17/2022]
Abstract
The diatom Stauroneis sp. was previously identified as a promising source of fucoxanthin and omega-3 oils. Methyl jasmonate (MJ) supplementation is known to enhance metabolite yields in this species without impacting on growth or photosynthesis. Therefore, a label-free proteomics approach was undertaken to further evaluate the functional role of MJ on the diatom's physiology. Of the twenty cultivation regimes were screened, Uf/2 medium with green+white LED's induced the greatest metabolic response when exposed to 10 μM MJ treatment. These conditions significantly enhanced the pigment and total cellular lipids contents. The increase in fucoxanthin correlating with a 20% increase in Trolox reducing equivalent in the total antioxidant assay, indicating a non-enzymatic antioxidant role of fucoxanthin to mitigate the detrimental effects of a redox imbalance within chloroplasts. The proteomics identified 197 proteins up-regulated 48 h after MJ exposure including cell signalling cascades, photosynthetic processes, carbohydrate metabolism, lipid biosynthesis and chloroplast biogenesis. MJ strengthened the dark reactions of photosynthesis to support growth and metabolite fluxes. The MJ-induced ER stress protein triggered lipid body production, facilitating metabolite turnover and trafficking between cellular organelles. Plastid terminal oxidase and glutamate 1-semialdehyde 2,1-aminomutase may act as MJ-induced ROS responsive regulatory switch to support chloroplast biosynthesis. SIGNIFICANCE STATEMENT: Phytohormones represents a promising tool to enhance the high-value metabolite yields in plants and algae, however little is known of the role of methyl jasmonate in diatoms at a molecular level. A shotgun proteomics approach was undertaken to determine the influence of MJ on the diatom's cellular physiology in the marine diatom Stauroneis sp., revealing a signal transduction cascade leading to increased lipid and pigment content and identified promising targets for genetic engineering.
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Affiliation(s)
- Dónal Mc Gee
- Centre for Environmental Research, Sustainability and Innovation (CERIS), School of Science, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland.
| | - Lorraine Archer
- Centre for Environmental Research, Sustainability and Innovation (CERIS), School of Science, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland
| | - Rachel Parkes
- Centre for Environmental Research, Sustainability and Innovation (CERIS), School of Science, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland
| | - Gerard T A Fleming
- Microbiology Department, School of Natural Sciences, National University of Ireland, Galway, Ireland
| | - Hugo M Santos
- Bioscope Research Group, Department of Chemistry, Faculty of Science and Technology, Universidade NOVA de Lisboa, 2829_516 Caparica, Portugal
| | - Nicolas Touzet
- Centre for Environmental Research, Sustainability and Innovation (CERIS), School of Science, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland
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Parkes R, Archer L, Gee DM, Smyth TJ, Gillespie E, Touzet N. Differential responses in EPA and fucoxanthin production by the marine diatom Stauroneis sp. under varying cultivation conditions. Biotechnol Prog 2021; 37:e3197. [PMID: 34337902 DOI: 10.1002/btpr.3197] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 07/06/2021] [Accepted: 07/23/2021] [Indexed: 01/03/2023]
Abstract
There has been an increasing drive toward better valorising raw biological materials in the context of the sustainability of bio-based industries and the circular economy. As such, microalgae hold the ability to biosynthesise valuable metabolites, which are sought after within the bioenergy, pharmaceuticals, cosmetics or nutrition sectors. Owing to their bioactivities, the xanthophyll pigment fucoxanthin and the omega-3 polyunsaturated fatty acid eicosapentaenoic acid (EPA) have fostered increasing interests in terms of sustainably refining them from natural sources, such as microalgae. Together with the suitability of individual species to industrial cultivation, a key challenge resides in optimizing the yields of these compounds within the microalgal biomass they are retrieved from. The marine diatom Stauroneis sp. LACW24 was batch cultivated into its stationary phase of growth prior to being subjected at high cell density (1 × 106 cells mL-1 ) to seven different regimes of light exposure in replenished medium and under nutritional limitation (silica and nitrate) for 12 days. The highest EPA proportions and yields were obtained under blue LED in f/2 medium (16.5% and 4.8 mg g-1 , respectively), double the values obtained under red LED illumination. The fucoxanthin yield was the highest when cells were subjected to blue LEDs (5.9 mg g-1 ), a fourfold increase compared to the nitrogen-limited treatment under white LEDs. These results indicate that a two-stage approach to the batch cultivation of this diatom can be used for enhancing the production of the high-value metabolites fucoxanthin and EPA post-stationary phase.
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Affiliation(s)
- Rachel Parkes
- School of Science, Department of Environmental Science, Centre for Environmental Research, Sustainability and Innovation, Institute of Technology Sligo, Sligo, Ireland
| | - Lorraine Archer
- Algal Innovation Centre, Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | | | - Thomas J Smyth
- School of Science, Department of Health and Nutritional Sciences, Cellular Health and Toxicology Research Group (CHAT), Institute of Technology Sligo, Sligo, Ireland
| | - Eoin Gillespie
- School of Science, Department of Environmental Science, Centre for Environmental Research, Sustainability and Innovation, Institute of Technology Sligo, Sligo, Ireland
| | - Nicolas Touzet
- School of Science, Department of Environmental Science, Centre for Environmental Research, Sustainability and Innovation, Institute of Technology Sligo, Sligo, Ireland
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Parker SG, Mallett S, Quinn L, Wood CPJ, Boulton RW, Jamshaid S, Erotocritou M, Gowda S, Collier W, Plumb AAO, Windsor ACJ, Archer L, Halligan S. Corrigendum to: Identifying predictors of ventral hernia recurrence: systematic review and meta-analysis. BJS Open 2021; 5:6299993. [PMID: 34131707 PMCID: PMC8205854 DOI: 10.1093/bjsopen/zrab047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Parker SG, Mallett S, Quinn L, Wood CPJ, Boulton RW, Jamshaid S, Erotocritou M, Gowda S, Collier W, Plumb AAO, Windsor ACJ, Archer L, Halligan S. Identifying predictors of ventral hernia recurrence: systematic review and meta-analysis. BJS Open 2021; 5:6220253. [PMID: 33839749 PMCID: PMC8038271 DOI: 10.1093/bjsopen/zraa071] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 12/08/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Ventra hernias are increasing in prevalence and many recur despite attempted repair. To date, much of the literature is underpowered and divergent. As a result there is limited high quality evidence to inform surgeons succinctly which perioperative variables influence postoperative recurrence. This systematic review aimed to identify predictors of ventral hernia recurrence. METHODS PubMed was searched for studies reporting prognostic data of ventral hernia recurrence between 1 January 1995 and 1 January 2018. Extracted data described hernia type (primary/incisional), definitions of recurrence, methods used to detect recurrence, duration of follow-up, and co-morbidity. Data were extracted for all potential predictors, estimates and thresholds described. Random-effects meta-analysis was used. Bias was assessed with a modified PROBAST (Prediction model Risk Of Bias ASsessment Tool). RESULTS Screening of 18 214 abstracts yielded 274 individual studies for inclusion. Hernia recurrence was defined in 66 studies (24.1 per cent), using 41 different unstandardized definitions. Three patient variables (female sex, age 65 years or less, and BMI greater than 25, 30, 35 or 40 kg/m2), five patient co-morbidities (smoking, diabetes, chronic obstructive pulmonary disease, ASA grade III-IV, steroid use), two hernia-related variables (incisional/primary, recurrent/primary), six intraoperative variables (biological mesh, bridged repair, open versus laparoscopic surgery, suture versus mesh repair, onlay/retrorectus, intraperitoneal/retrorectus), and six postoperative variables (any complication, surgical-site occurrence, wound infection, seroma, haematoma, wound dehiscence) were identified as significant prognostic factors for hernia recurrence. CONCLUSION This study summarized the current evidence base for predicting ventral hernia recurrence. Results should inform best practice and future research.
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Affiliation(s)
- S G Parker
- Abdominal Wall Unit, Department of Surgery, University College Hospital, London, UK
| | - S Mallett
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - L Quinn
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK.,University College London Medical School, London, UK
| | - C P J Wood
- Abdominal Wall Unit, Department of Surgery, University College Hospital, London, UK
| | - R W Boulton
- Abdominal Wall Unit, Department of Surgery, University College Hospital, London, UK
| | - S Jamshaid
- Abdominal Wall Unit, Department of Surgery, University College Hospital, London, UK
| | - M Erotocritou
- Abdominal Wall Unit, Department of Surgery, University College Hospital, London, UK
| | - S Gowda
- Abdominal Wall Unit, Department of Surgery, University College Hospital, London, UK
| | - W Collier
- Abdominal Wall Unit, Department of Surgery, University College Hospital, London, UK
| | - A A O Plumb
- Centre of Medical Imaging, University College Hospital, London, UK
| | - A C J Windsor
- Abdominal Wall Unit, Department of Surgery, University College Hospital, London, UK
| | - L Archer
- Centre for Prognosis Research, School of Primary, Community and Social Care, Keele University, Keele, UK
| | - S Halligan
- Centre of Medical Imaging, University College Hospital, London, UK
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Archer L, McGee D, Parkes R, Paskuliakova A, McCoy GR, Adamo G, Cusimano A, Bongiovanni A, Gillespie E, Touzet N. Antioxidant Bioprospecting in Microalgae: Characterisation of the Potential of Two Marine Heterokonts from Irish Waters. Appl Biochem Biotechnol 2020; 193:981-997. [PMID: 33215392 DOI: 10.1007/s12010-020-03467-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 11/09/2020] [Indexed: 11/25/2022]
Abstract
Microalgae constitute a heterogeneous and diverse range of organisms capable of accumulating bioactive metabolites, making them promising feedstock for applications in the nutraceutical, functional food, animal feed, biofertilisation or biofuel sectors. There has been renewed interest in recent times in natural sources of antioxidants, particularly as health products and preserving agents. Microalgae strains isolated from aquatic habitats in Ireland were successfully brought into culture. The 91 strains were grown phototrophically in nutrient-enriched media to generate biomass, which was harvested and assessed for antioxidant potential. Extracts were screened for antioxidant activity using a modified volumetric Trolox-ABTS assay and the Folin-Ciocalteu method. Two heterokont marine strains of interest were further studied to ascertain variations in antioxidant capacity across different stages of batch culture growth. The antioxidant activity of extracts of bacillariophyte cf. Stauroneis sp. LACW24 and ocrophyte cf. Phaeothamnion sp. LACW34 increased during growth with a maximum being observed during the late stationary or early death phase (2.5- to 8-fold increases between days 20 and 27). Strains LACW24 and LACW34 contained 5.9 and 3.0 mg g-1 (DW) of the xanthophyll fucoxanthin, respectively. Extracts of strains also showed no cytotoxicity towards mouse cell lines. These results highlight the potential of these strains for biomass valorisation and cultivation upscaling and to be further considered as part of ongoing bioprospecting efforts towards identifying novel species to join the relatively narrow range of commercially exploited marine microalgae species.
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Affiliation(s)
- Lorraine Archer
- School of Science, Department of Environmental Science, Centre for Environmental Research Innovation and Sustainability (CERIS), Institute of Technology Sligo, Sligo, Ireland.
| | - Dónal McGee
- School of Science, Department of Environmental Science, Centre for Environmental Research Innovation and Sustainability (CERIS), Institute of Technology Sligo, Sligo, Ireland
| | - Rachel Parkes
- School of Science, Department of Environmental Science, Centre for Environmental Research Innovation and Sustainability (CERIS), Institute of Technology Sligo, Sligo, Ireland
| | - Andrea Paskuliakova
- School of Science, Department of Environmental Science, Centre for Environmental Research Innovation and Sustainability (CERIS), Institute of Technology Sligo, Sligo, Ireland
| | - Gary R McCoy
- Bord Iascaigh Mhara, Crofton Road, Dún Laoghaire, Co, Dublin, A96 E5A0, Ireland
| | - Giorgia Adamo
- Institute for Biomedical Research and Innovation (IRIB), National Research Council (CNR) of Italy, Palermo, Italy
| | - Antonella Cusimano
- Institute for Biomedical Research and Innovation (IRIB), National Research Council (CNR) of Italy, Palermo, Italy
| | - Antonella Bongiovanni
- Institute for Biomedical Research and Innovation (IRIB), National Research Council (CNR) of Italy, Palermo, Italy
| | - Eoin Gillespie
- School of Science, Department of Environmental Science, Centre for Environmental Research Innovation and Sustainability (CERIS), Institute of Technology Sligo, Sligo, Ireland
| | - Nicolas Touzet
- School of Science, Department of Environmental Science, Centre for Environmental Research Innovation and Sustainability (CERIS), Institute of Technology Sligo, Sligo, Ireland
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Mc Gee D, Archer L, Fleming GT, Gillespie E, Touzet N. The effect of nutrient and phytohormone supplementation on the growth, pigment yields and biochemical composition of newly isolated microalgae. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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McGee D, Archer L, Fleming GTA, Gillespie E, Touzet N. Influence of spectral intensity and quality of LED lighting on photoacclimation, carbon allocation and high-value pigments in microalgae. Photosynth Res 2020; 143:67-80. [PMID: 31705368 DOI: 10.1007/s11120-019-00686-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 10/21/2019] [Indexed: 05/09/2023]
Abstract
Tailoring spectral quality during microalgal cultivation can provide a means to increase productivity and enhance biomass composition for downstream biorefinery. Five microalgae strains from three distinct lineages were cultivated under varying spectral intensities and qualities to establish their effects on pigments and carbon allocation. Light intensity significantly impacted pigment yields and carbon allocation in all strains, while the effects of spectral quality were mostly species-specific. High light conditions induced chlorophyll photoacclimation and resulted in an increase in xanthophyll cycle pigments in three of the five strains. High-intensity blue LEDs increased zeaxanthin tenfold in Rhodella sp. APOT_15 relative to medium or low light conditions. White light however was optimal for phycobiliprotein content (11.2 mg mL-1) for all tested light intensities in this strain. The highest xanthophyll pigment yields for the Chlorophyceae were associated with medium-intensity blue and green lights for Brachiomonas submarina APSW_11 (5.6 mg g-1 lutein and 2.0 mg g-1 zeaxanthin) and Kirchneriella aperta DMGFW_21 (1.5 mg g-1 lutein and 1 mg g-1 zeaxanthin), respectively. The highest fucoxanthin content in both Heterokontophyceae strains (2.0 mg g-1) was associated with medium and high white light for Stauroneis sp. LACW_24 and Phaeothamnion sp. LACW_34, respectively. This research provides insights into the application of LEDs to influence microalgal physiology, highlighting the roles of low light on lipid metabolism in Rhodella sp. APOT_15, of blue and green lights for carotenogenesis in Chlorophyceae and red light-induced photoacclimation in diatoms.
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Affiliation(s)
- Dónal McGee
- Department of Environmental Science, School of Science, CERIS, Centre for Environmental Research, Innovation and Sustainability, Institute of Technology Sligo, Sligo, Ireland.
| | - Lorraine Archer
- Department of Environmental Science, School of Science, CERIS, Centre for Environmental Research, Innovation and Sustainability, Institute of Technology Sligo, Sligo, Ireland
| | - Gerard T A Fleming
- Microbiology Department, School of Natural Sciences, National University of Ireland, Galway, Ireland
| | - Eoin Gillespie
- Department of Environmental Science, School of Science, CERIS, Centre for Environmental Research, Innovation and Sustainability, Institute of Technology Sligo, Sligo, Ireland
| | - Nicolas Touzet
- Department of Environmental Science, School of Science, CERIS, Centre for Environmental Research, Innovation and Sustainability, Institute of Technology Sligo, Sligo, Ireland
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Mc Gee D, Archer L, Smyth TJ, Fleming GT, Touzet N. Bioprospecting and LED-based spectral enhancement of antimicrobial activity of microalgae isolated from the west of Ireland. ALGAL RES 2020. [DOI: 10.1016/j.algal.2019.101704] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Archer L, Mc Gee D, Paskuliakova A, McCoy GR, Smyth T, Gillespie E, Touzet N. Fatty acid profiling of new Irish microalgal isolates producing the high-value metabolites EPA and DHA. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101671] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Pollentine A, Mortimer A, McCoubrie P, Archer L. Evaluation of two minimal-preparation regimes for CT colonography: optimising image quality and patient acceptability. Br J Radiol 2012; 85:1085-92. [PMID: 22422379 DOI: 10.1259/bjr/22421731] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE To compare a 2 day bowel preparation regime of barium, iodine and a mild stimulant laxative with a 1 day iodine-only regime for CT colonography (CTC). METHODS 100 consecutive patients underwent CTC. The first 50 patients (Regime 1) ingested 1 bisacodyl tablet twice a day 3 days before CTC and 1 dose each of 50 ml of barium and 20 ml of iodinated contrast per day starting 2 days before CTC. The second 50 patients (Regime 2) ingested 3 doses of iodinated contrast over 24 h prior to CTC. Volumes of residual stool and fluid, and the effectiveness of stool and fluid tagging, were graded according to methods established by Taylor et al (Taylor S, Slaker A, Burling D, Tam E, Greenhalgh R, Gartner L, et al. CT colonography: optimisation, diagnostic performance and patient acceptability of reduced-laxative regimens using barium-based faecal tagging. Eur Radiol 2008; 18: 32-42). A 3 day low-residue diet was taken by both cohorts. Questionnaires rating the side-effects and burden of the bowel preparation were compared to a control cohort of patients undergoing barium enema. RESULTS The proportion of colons producing none/scattered stool (score 1) was 90.3% with Regime 1 and 65.0% with Regime 2 (p<0.005). Any residual stool was significantly better tagged with Regime 1 (score 5), with 91.7% of Regime 1 exhibiting optimum tagging vs 71.3% of Regime 2 (p<0.05). No significant differences in side-effects between the bowel preparation regimes for CTC were elicited. Bowel preparation for barium enema was tolerated significantly worse than both of the CTC bowel preparation regimes. CONCLUSION Regime 1, containing a 3 day preparation of a mild laxative, barium and iodine, produced a significantly better prepared colon, with no difference in patient acceptability.
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Affiliation(s)
- A Pollentine
- Department of Radiology, Southmead Hospital, Westbury-on-Trym, Bristol, UK.
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Burdett C, Butt T, Archer L, Morley K, Searl C, Corris P, Parry G, Gould F, Dark J. 135 Evolving Experience with Donor Lung Bronchoalveolar Lavage. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Walls B, Mohammad S, Campbell J, Archer L, Beale J. Negative pressure dressings for severe hidradenitis suppurativa (acne inversa): a case report. J Wound Care 2010; 19:457-60. [DOI: 10.12968/jowc.2010.19.10.79094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- B. Walls
- HCA Largo Medical Center, Wound Care Center, Largo, FL, USA
| | - S. Mohammad
- HCA Largo Medical Center, Wound Care Center, Largo, FL, USA
| | - J. Campbell
- HCA Largo Medical Center, Wound Care Center, Largo, FL, USA
| | - L. Archer
- HCA Largo Medical Center, Wound Care Center, Largo, FL, USA
| | - J. Beale
- HCA Largo Medical Center, Wound Care Center, Largo, FL, USA
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Katz ML, Archer L, Peppercorn JM, Kereakoglow S, Collyar D, Burstein HJ, Schilsky RL, Partridge AH. The role of patient advocates in clinical trials: Perspectives from investigators and advocates in the Cancer and Leukemia Group B (CALGB). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.6148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Demmy TL, Gu L, Burkhalter JE, Toloza EM, D'Amico TA, Sutherland S, Wang XF, Archer L, Veit LJ, Kohman L. Comparison of in-dwelling catheters and talc pleurodesis in the management of malignant pleural effusions. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.9031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Khan MS, Coenen F, Reid D, Patel R, Archer L. A sliding windows based dual support framework for discovering emerging trends from temporal data. Knowl Based Syst 2010. [DOI: 10.1016/j.knosys.2009.11.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kornblith A, Archer L, Lan L, Kimmick G, Partridge A, Casey R, Bennett S, Hudis C, Winer E, Cohen H, Muss H. Quality of Life of Early Stage Breast Cancer Patients 65 Years Old or Older Randomized to Standard Chemotherapy or Capecitabine: A Cancer and Leukemia Group B Study (CALGB 49907). Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-5035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: CALGB conducted a randomized Phase III trial (49907) to test whether older cancer patients receiving capecitabine would have a similar clinical outcome as those receiving standard chemotherapy, but less toxicity. This represented an important quality of life (QoL) paradigm in which treatment recommendations might be based on QoL findings if there was less toxicity for capecitabine with similar clinical outcomes as those achieved with standard chemotherapy. Materials and Methods: A preplanned QoL assessment was preformed in 350 patients randomized to either standard chemotherapy (CMF or AC) (n= 182) or capecitabine (n=168). All patients were interviewed by telephone using standardized questionnaires conducted at baseline, mid-treatment, at 1 month post-treatment, and at 12, 18 and 24 months. Data were analyzed using pattern mixture models and analysis of covariance with repeated measures, in which the sample was divided into groups based on the period of time they had completed assessments. Results: Patients in the capecitabine arm reported a better overall QoL (EORTC p< 0.0001), less fatigue (EORTC p< 0.0001), less nausea and vomiting (EORTC, p< 0.0001), less constipation (EORTC, p< 0.0001), less systemic side effects (EORTC, p< 0.0001), better appetite (EORTC, p< 0.0001), better body image (EORTC, p< 0.0001), less psychological distress (Hospital Anxiety and Depression scale, p< 0.0001), better role (EORTC, p< 0.0001) and social functioning (EORTC, p< 0.0001) than did those in the standard chemotherapy arm at either mid-treatment and/or the end of treatment for those assessed through 24 months. Capecitabine patients reported worse diarrhea (EORTC, p< 0.0001) at mid-treatment, and worse hand–foot symptoms (p< 0.0001) at mid and end of treatment than did those receiving standard chemotherapy. There were no significant differences in most of these measures by 12 months. Discussion: With clinical results showing a significantly improved relapse-free and overall survival for patients who received standard chemotherapy vs. capecitabine (Muss et al., NEJM 2009; 360: 2118), the QoL results will not guide treatment recommendations. However, the QoL results largely confirmed that patients treated with capecitabine experience significantly better QoL vs. those treated with standard chemotherapy due to less toxicity during and at the end of treatment for the sizable group of patients who had completed interviews through 24 months (n=245). These results indicate that despite the worse clinical outcome of patients who receive capecitabine treatment, the majority of capecitabine patients did not experience a worsening QoL from 12 months through 24 months compared to patients receiving standard chemotherapy. Further, these findings are relevant in selecting treatments in the metastatic setting where QoL endpoints often drive decision-making and the goal is to achieve a reasonable level of efficacy while minimizing toxicity.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 5035.
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Affiliation(s)
| | - L. Archer
- 2Duke University Medical Center, NC,
| | - L. Lan
- 3Duke University Medical Center, NC,
| | | | | | - R. Casey
- 6Yale University School of Nursing, CT, Johns Hopkins Hospital, MD,
| | - S. Bennett
- 6Yale University School of Nursing, CT, Johns Hopkins Hospital, MD,
| | - C. Hudis
- 8Memorial Sloan-Kettering Cancer Center, NY,
| | - E. Winer
- 9Dana-Farber Cancer Institute, MA,
| | - H. Cohen
- 10Duke University Medical Center, NC,
| | - H. Muss
- 11University of North Carolina-Chapel Hill, NC,
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O'Neill A, Dunn M, Archer L, Brown K, Simpson B, Robinson J, Irvine D, O'Sullivan J. BREAST AND SUPRA-CLAVICULAR RADIOTHERAPY SET-UP: A PROSPECTIVE AUDIT OF PRACTICE. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)73196-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Schrag D, Naughton M, Kesselheim A, Archer L, Niedzwiedcki D, Romanus D, Goldberg R, Venook A. Clinical trial participants’ strategies for coping with prescription drug costs: A companion study to CALGB 80405. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.9503] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
9503 Background: The strategies used by clinical trial participants to cope with the high costs of prescription drugs are poorly characterized. Methods: We identified a cohort of newly metastatic CRC patients participating in CALGB 80405, a phase III trial comparing first-line systemic chemotherapy with Bevacizumab, Cetuximab or both agents. We surveyed trial participants about their prescription drug insurance status and strategies they used to cope with out-of-pocket prescription drug costs. We surveyed patients before trial initiation and again 3 months later to assess the extent to which embarking on chemotherapy imposes additional financial burden requiring use of coping strategies. Results: Out of 1422 trial participants, 806 (57%) completed the baseline survey. The 515 enrolled before 09/01/2007 were asked to repeat the survey by phone at 3 months; 409/505 alive at 3 months (81%) did so. The 409 patients in the analytic cohort had similar clinical and demographic features to those not surveyed. 60/409 (15%) lacked prescription drug coverage and only 48/409 (12%) discussed prescription drug costs with their physicians. Conclusions: In the context of a trial in which costs of chemotherapy are covered and most participants had prescription drug insurance, patients rarely discuss prescription drug costs with their physicians. Although a considerable minority report having used coping strategies to lessen the cost burden, only a very small minority newly adopt such strategies after starting chemotherapy on trial. [Table: see text] [Table: see text]
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Affiliation(s)
- D. Schrag
- Dana-Farber Cancer Institute, Boston, MA; Wake Forest University, Wake Forest, NC; Brigham and Women's Hospital, Boston, MA; CALGB, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of California at San Fransisco, San Fransisco, CA
| | - M. Naughton
- Dana-Farber Cancer Institute, Boston, MA; Wake Forest University, Wake Forest, NC; Brigham and Women's Hospital, Boston, MA; CALGB, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of California at San Fransisco, San Fransisco, CA
| | - A. Kesselheim
- Dana-Farber Cancer Institute, Boston, MA; Wake Forest University, Wake Forest, NC; Brigham and Women's Hospital, Boston, MA; CALGB, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of California at San Fransisco, San Fransisco, CA
| | - L. Archer
- Dana-Farber Cancer Institute, Boston, MA; Wake Forest University, Wake Forest, NC; Brigham and Women's Hospital, Boston, MA; CALGB, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of California at San Fransisco, San Fransisco, CA
| | - D. Niedzwiedcki
- Dana-Farber Cancer Institute, Boston, MA; Wake Forest University, Wake Forest, NC; Brigham and Women's Hospital, Boston, MA; CALGB, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of California at San Fransisco, San Fransisco, CA
| | - D. Romanus
- Dana-Farber Cancer Institute, Boston, MA; Wake Forest University, Wake Forest, NC; Brigham and Women's Hospital, Boston, MA; CALGB, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of California at San Fransisco, San Fransisco, CA
| | - R. Goldberg
- Dana-Farber Cancer Institute, Boston, MA; Wake Forest University, Wake Forest, NC; Brigham and Women's Hospital, Boston, MA; CALGB, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of California at San Fransisco, San Fransisco, CA
| | - A. Venook
- Dana-Farber Cancer Institute, Boston, MA; Wake Forest University, Wake Forest, NC; Brigham and Women's Hospital, Boston, MA; CALGB, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of California at San Fransisco, San Fransisco, CA
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D'Amico A, Halabi S, Vollmer R, Loffredo M, McMahon E, Sanford B, Archer L, Vogelzang N, Small E, Kantoff P. p53 Protein Expression Status and Recurrence in Men Treated With Radiation Therapy and Androgen Suppression Therapy for Higher Risk Prostate Cancer: A Prospective Phase II Cancer and Leukemia Group B Study. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Romanus D, Archer L, Wang X, Goldberg R, Mulcahy M, Kindler H, Schrag D. Does health-related quality of life (HRQL) improve for patients who respond to chemotherapy? Analysis of patients with advanced pancreas cancer (APC) receiving gemcitabine on Cancer and Leukemia Group B (CALGB) study #80303. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.9008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
9008 Background: Gemcitabine chemotherapy for APC is palliative and confers only modest survival advantage. Therefore HRQL concerns are of paramount importance. Methods: We compared HRQL scores based on response to chemotherapy at the first interval restaging (8 weeks). We evaluated HRQL at baseline on paper, and then q8 weeks by phone using the EQ5D instrument in patients with APC participating in a double-blind, randomized trial comparing overall survival for gemcitabine with bevacizumab (GB) or placebo (GP). The EQ5D is a HRQL measure whose composite (C) and visual analog scale (VAS) scores respectively reflect societal and patient valuations. Results: Among 552 patients starting protocol treatment, characteristics did not differ between 359 who did and 193 who didn’t complete baseline assessments. Patients who didn’t complete 8 week assessments were more likely to have died, progressed or discontinued protocol therapy. Changes in EQ5D scores from baseline to 8 weeks did not differ by treatment arm (p-values=0.84, 0.79 for C and VAS scales, Wilcoxon rank sum test). At 8 weeks, all patients and those with progressive disease had a modest decline in VAS scores (p-values≤0.02, Wilcoxon signed rank test). Comparisons of changes from baseline in C scores at 8 week follow-up revealed no differences within other response group strata (all p-values > 0.05). Conclusions: Based on this preliminary analysis, gemcitabine therapy was not associated with higher HRQL scores, nor was there any strong association between tumor response and HRQL. To increase data representativeness, future APC trials should assess HRQL more often than every 8 weeks. HRQL Scores Based on Gemcitabine Response Strata. Values are Mean (SD) [Table: see text] [Table: see text]
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Affiliation(s)
- D. Romanus
- Dana-Farber Cancer Institute, Boston, MA; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; University of North Carolina, Chapel Hill, NC; Northwestern University, Chicago, IL; University of Chicago, Chicago, IL; Memorial Sloan- Kettering Cancer Center, New York, NY
| | - L. Archer
- Dana-Farber Cancer Institute, Boston, MA; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; University of North Carolina, Chapel Hill, NC; Northwestern University, Chicago, IL; University of Chicago, Chicago, IL; Memorial Sloan- Kettering Cancer Center, New York, NY
| | - X. Wang
- Dana-Farber Cancer Institute, Boston, MA; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; University of North Carolina, Chapel Hill, NC; Northwestern University, Chicago, IL; University of Chicago, Chicago, IL; Memorial Sloan- Kettering Cancer Center, New York, NY
| | - R. Goldberg
- Dana-Farber Cancer Institute, Boston, MA; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; University of North Carolina, Chapel Hill, NC; Northwestern University, Chicago, IL; University of Chicago, Chicago, IL; Memorial Sloan- Kettering Cancer Center, New York, NY
| | - M. Mulcahy
- Dana-Farber Cancer Institute, Boston, MA; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; University of North Carolina, Chapel Hill, NC; Northwestern University, Chicago, IL; University of Chicago, Chicago, IL; Memorial Sloan- Kettering Cancer Center, New York, NY
| | - H. Kindler
- Dana-Farber Cancer Institute, Boston, MA; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; University of North Carolina, Chapel Hill, NC; Northwestern University, Chicago, IL; University of Chicago, Chicago, IL; Memorial Sloan- Kettering Cancer Center, New York, NY
| | - D. Schrag
- Dana-Farber Cancer Institute, Boston, MA; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; University of North Carolina, Chapel Hill, NC; Northwestern University, Chicago, IL; University of Chicago, Chicago, IL; Memorial Sloan- Kettering Cancer Center, New York, NY
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Schrag D, Archer L, Wang X, Romanus D, Mulcahy M, Goldberg R, Kindler H. A patterns-of-care study of post-progression treatment (Rx) among patients (pts) with advanced pancreas cancer (APC) after gemcitabine therapy on Cancer and Leukemia Group B (CALGB) study #80303. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.4524] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [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
4524 Background: Gemcitabine is the mainstay of Rx for pts with APC. Practice guidelines encourage participation in trials after disease progression. We evaluated Rx after APC progression for pts in CALGB 80303 a randomized trial of gemcitabine + bevacizumab (GB) or placebo (GP). Methods: Of the 552 pts who began GP or GB Rx, 457 had comprehensive medical record review. Of these 355 progressed on protocol Rx. We evaluated post-progression Rx for these 355 pts - the record review (RecR) group. We also phoned a subgroup of 126 pts to inquire about Rx delivered at sites other than the accruing center - the record review & interview group (RecR + I) to determine whether any Rx had been administered and the specific agents used. Results: ChemoRx after progression on gemcitabine was distinctly uncommon. Based on RecR 239/355=67.3% and on RecR + I, 70/126=55.6% of pts received no chemoRx after progression on the study Rx. These proportions did not vary based on Rx assignment. Worse ECOG performance status at baseline and older age were associated with lower likelihood of post progression Rx. Notably, 99/355=27.9% of pts died within 4 weeks of progression. Conclusions: After progression on a clinical trial of gemcitabine Rx, <half of pts receive 2nd line Rx and remarkably few (<2%) receive further experimental Rx. Given the lack of well established Rx options, there appear to be lost opportunities for participation in early phase clinical trials. Coordinated strategies for second line Rx options might increase the evidence base for this challenging malignancy. Patterns of Post-Progression ChemoRx after Progression on Gemcitabine ± Bevacizumab in APC. [Table: see text] [Table: see text]
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Affiliation(s)
- D. Schrag
- Memorial Sloan-Kettering Cancer Center, New York, NY; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; Dana-Farber Cancer Institute, Boston, MA; Northwestern University, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of Chicago, Chicago, IL
| | - L. Archer
- Memorial Sloan-Kettering Cancer Center, New York, NY; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; Dana-Farber Cancer Institute, Boston, MA; Northwestern University, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of Chicago, Chicago, IL
| | - X. Wang
- Memorial Sloan-Kettering Cancer Center, New York, NY; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; Dana-Farber Cancer Institute, Boston, MA; Northwestern University, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of Chicago, Chicago, IL
| | - D. Romanus
- Memorial Sloan-Kettering Cancer Center, New York, NY; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; Dana-Farber Cancer Institute, Boston, MA; Northwestern University, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of Chicago, Chicago, IL
| | - M. Mulcahy
- Memorial Sloan-Kettering Cancer Center, New York, NY; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; Dana-Farber Cancer Institute, Boston, MA; Northwestern University, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of Chicago, Chicago, IL
| | - R. Goldberg
- Memorial Sloan-Kettering Cancer Center, New York, NY; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; Dana-Farber Cancer Institute, Boston, MA; Northwestern University, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of Chicago, Chicago, IL
| | - H. Kindler
- Memorial Sloan-Kettering Cancer Center, New York, NY; Duke University, Durham, NC; CALGB Statistical Center, Durham, NC; Dana-Farber Cancer Institute, Boston, MA; Northwestern University, Chicago, IL; University of North Carolina, Chapel Hill, NC; University of Chicago, Chicago, IL
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Forrest IA, Murphy DM, Ward C, Jones D, Johnson GE, Archer L, Gould FK, Cawston TE, Lordan JL, Corris PA. Primary airway epithelial cell culture from lung transplant recipients. Eur Respir J 2006; 26:1080-5. [PMID: 16319339 DOI: 10.1183/09031936.05.00141404] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [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: 11/05/2022]
Abstract
Long-term survival in lung transplantation is limited by the development of obliterative bronchiolitis, a condition characterised by inflammation, epithelial injury, fibroproliferation and obliteration of bronchioles leading to airflow obstruction. To investigate the role of the bronchial epithelium in the pathogenesis of obliterative bronchiolitis the current study aimed to establish primary bronchial epithelial cell cultures (PBEC) from lung allografts. Four to six bronchial brushings were obtained from sub-segmental bronchi of lung allografts. Cells were seeded onto collagen-coated plates and grown to confluence in bronchial epithelial growth medium. Bronchial brushings (n=33) were obtained from 27 patients. PBECs were grown to confluence from 12 out of 33 (39%) brushings. Failure to reach confluence was due to early innate infection. Bacteria were usually isolated from both bronchoalveolar lavage and culture media, but a separate population was identified in culture media only. Primary culture of bronchial epithelial cells from lung transplant recipients is feasible, despite a high rate of early, patient-derived infection. Latent infection of the allograft, identified only by bronchial brushings, may itself be a persistent stimulus for epithelial injury. This technique facilitates future mechanistic studies of airway epithelial responses in the pathogenesis of obliterative bronchiolitis.
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Affiliation(s)
- I A Forrest
- Applied Immunobiology and Transplantation Research Group, University of Newcastle upon Tyne, UK.
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25
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Botha P, Archer L, Anderson R, Lordan J, Dark J, Corris P, Gould F, Fisher A. 382. J Heart Lung Transplant 2006. [DOI: 10.1016/j.healun.2005.11.396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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26
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Archer L, Fisher A, Botha P, Gould F. 173. J Heart Lung Transplant 2006. [DOI: 10.1016/j.healun.2005.11.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Burney K, Archer L, Grier D, Spicer R. Case report of a Wilms' tumor and a left-sided inferior vena cava. A common tumor with a normal variant of surgical significance. J Pediatr Surg 2005; 40:1482-3. [PMID: 16150353 DOI: 10.1016/j.jpedsurg.2005.05.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a case of a successful surgical resection of a Wilms' tumor in the right kidney with a coincidental preoperative imaging finding of a left-sided inferior vena cava. To our knowledge, these 2 conditions occurring together has not been previously reported in literature. Diagnostic features and the value of magnetic resonance imaging are emphasized. We also review the literature of major venous anomalies and their influence on surgical procedures carried out on such patients.
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Affiliation(s)
- Kashif Burney
- Department of Radiology, Bristol Royal Infirmary, Bristol BS16 1WA, UK
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Wearmouth D, Archer L, Corris P, Dark J, Gould F. Successful outcome following lung transplantion for recipients colonised with filamentous fungi at time of transplant. J Heart Lung Transplant 2005. [DOI: 10.1016/j.healun.2004.12.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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30
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Archer L, Morris K, Perry J, Dark J, Corris P, Gould F. Use of the Multi Combination Bactericidal Test to detect optimal antimicrobial combinations for the treatment of Pseudomonas aeruginosa and Burkholderia cepacia in patients undergoing lung transplantation. J Heart Lung Transplant 2005. [DOI: 10.1016/j.healun.2004.11.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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31
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De Soyza A, Morris K, McDowell A, Doherty C, Archer L, Perry J, Govan JRW, Corris PA, Gould K. Prevalence and clonality of Burkholderia cepacia complex genomovars in UK patients with cystic fibrosis referred for lung transplantation. Thorax 2004; 59:526-8. [PMID: 15170040 PMCID: PMC1747049 DOI: 10.1136/thx.2003.010801] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [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: 11/04/2022]
Abstract
BACKGROUND It has previously been reported that patients infected with Burkholderia cenocepacia (genomovar III) before lung transplantation have a poorer outcome than those with other B. cepacia complex infections. METHODS An extensive study was conducted to determine the prevalence and clonality of B. cepacia complex genomovars isolated from patients referred for transplant assessment between 1989 to the present and, where appropriate, whether strain type was related to transplant outcome. RESULTS Isolates from 29 patients were identified as B. cepacia complex organisms by molecular analysis. Thirteen patients (45%) were infected with the highly transmissible ET-12 strain of B. cenocepacia recA lineage III-A, while all remaining patients were infected with genetically unique B. cenocepacia, B. multivorans, and B. vietnamiensis strains. All previously reported deaths following transplantation were associated with ET-12 infection. CONCLUSIONS The ET-12 strain is the predominant cause of B. cenocepacia infections in patients with cystic fibrosis referred to our pulmonary transplant centre and is associated with poor transplant outcomes using standard treatment regimens.
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Affiliation(s)
- A De Soyza
- Transplantation and Immunobiology Group, The Freeman Hospital, High Heaton, Newcastle upon Tyne NE7 7DN, UK.
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Bailey IW, Archer L. The impact of the introduction of treated water on aspects of community health in a rural community in Kwazulu-Natal, South Africa. Water Sci Technol 2004; 50:105-110. [PMID: 15318494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A project was designed by Umgeni Water (funded by the Water Research Commission of South Africa) to monitor the implementation of water reticulation in Vulindlela and evaluate the Water Supply Scheme from a community and environmental health perspective. The findings would hopefully contribute toward the development of criteria for Health Impact Assessment on Water Reticulation Projects. One objective of this study was to evaluate the usefulness of diarrhoeal disease as opposed to other health indicators for water-associated diseases. The innovative methodology followed in the study, a "stepped wedge design", compared four discrete areas of water reticulation implementation in Vulindlela over a 15-month period. Five surveys, including a baseline and four follow-ups at each household, were carried out. Analysis (microbiological, chemical) was carried out of samples from the household drinking water and from the source of the water. Each survey included health questionnaires, the respondent being the head of the household in each case. Overall, there was no direct correlation proved between water quality and diarrhoea per se. However, there was a marked decrease in diarrhoea with the introduction of the new water supply. There was definite correlation between hygiene behaviours and diarrhoea. Diarrhoea would seem to be the health impact associated with water, of choice.
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Affiliation(s)
- I W Bailey
- Umgeni Water Box 9, Pietermaritzburg 3200, South Africa.
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Abstract
We tested whether orthodontic tooth movement (OTM) could be blocked by local administration of echistatin or an arginine-glycine-aspartic acid (RGD) peptide, agents known to perturb bone remodeling, adjacent to maxillary molars in rats. These molecules were incorporated into ethylene-vinyl acetate (ELVAX), a non-biodegradable, sustained-release polymer. In vitro experiments showed that the echistatin and RGD peptide were released from ELVAX in active forms at levels sufficient to disrupt osteoclasts. Biotinylated RGD peptide was released from ELVAX into the PDL after surgical implantation. ELVAX loaded with either RGD peptide or echistatin and surgically implanted next to the maxillary molars inhibited orthodontic tooth movement (p < 0.01). The RGD peptide also reduced molar drift (p < 0.05). This study shows the feasibility of using ELVAX to deliver integrin inhibitors adjacent to teeth to limit local tooth movement in response to orthodontic forces.
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Affiliation(s)
- C Dolce
- Department of Orthodontics, College of Dentistry, University of Florida, Box 100444, JHMHC, Gainesville, FL 32610-0444, USA.
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Abstract
Matrix metalloproteinases are involved in the regulation of bone remodeling. The hypothesis that matrix metalloproteinase inhibitors may be useful for experimentally limiting orthodontic tooth movement, a process involving perturbations of normal bone remodeling, was tested. General matrix metalloproteinase inhibitors limited the resorption of bone slices by mouse marrow cultures stimulated by calcitriol, parathyroid hormone, and basic-fibroblast growth factor. Pre-coating dentin slices with short arginine-glycine aspartic acid (RGD) peptides, but not arginine-glycine-glutamic acid (RGE) controls, restored bone resorption in the presence of matrix metalloproteinase inhibitors. Orthodontic tooth movement was inhibited by local delivery of Ilomastat, a general matrix metalloproteinase inhibitor, with the use of ethylene-vinyl-acetate (ELVAX) 40, a non-biodegradable, non-inflammatory sustained-release polymer. This study shows that orthodontic tooth movement can be inhibited with the use of matrix metalloproteinase inhibitors, and suggests a mechanistic link between matrix metalloproteinase activity and the production of RGD peptides.
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Affiliation(s)
- L S Holliday
- Department of Orthodontics, College of Dentistry, University of Florida, Box 100444, JHMHC, Gainesville, FL 32610-0444, USA
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De Soyza A, McDowell A, Archer L, Dark JH, Elborn SJ, Mahenthiralingam E, Gould K, Corris PA. Burkholderia cepacia complex genomovars and pulmonary transplantation outcomes in patients with cystic fibrosis. Lancet 2001; 358:1780-1. [PMID: 11734238 DOI: 10.1016/s0140-6736(01)06808-8] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Burkholderia cepacia is a group of organisms that comprises seven genotypically distinct species (B cepacia genomovars I-VII), which are collectively known as the B cepacia complex. Preoperative infection with B cepacia is associated with a poor prognosis in lung transplant recipients with cystic fibrosis. Many centres do not, therefore, offer transplants to these individuals. Our aim was to ascertain whether or not post-transplant mortality is affected by pretransplant genomovar status. We studied archived isolates with PCR-based methods, and recorded excessive mortality in patients infected with B cepacia genomovar III, but not in those infected with other genomovars.
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Archer L. [The human genome project from the catholic perspective]. Servir 2001; 49:117-24. [PMID: 12012708] [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: 02/25/2023]
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De Soyza A, Archer L, McDowell A, Moore J, Dark JH, Elborn S, Mahenthiralingam E, Corris PA, Gould K. Lung transplantation for cystic fibrosis; the effect of B cepacia genomovars on post transplant outcomes. J Heart Lung Transplant 2001; 20:158. [PMID: 11250232 DOI: 10.1016/s1053-2498(00)00280-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- A De Soyza
- 1Freeman Hospital, Newcastle upon Tyne, United Kingdom; 2Belfast City Hospital, Belfast, Northern Ireland, United Kingdom; 3University of Newcastle upon Tyne, Newcastle upon Tyne, United Kingdom; 4University of Wales at Cardiff, Cardiff, Wales, United Kingdom
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Abstract
OBJECTIVE DSM-IV specifies that Asperger's disorder is a type of pervasive developmental disorder without clinically significant cognitive or language delay. There are no data, however, on the outcome of children with Asperger's disorder or on whether their outcome differs from that of children with autism. The objectives of this study were to compare the outcome of groups of children with these disorders over a period of 2 years on variables independent of the defining criteria and to identify variables that might account for these differences. METHOD All children 4-6 years of age who came for assessment or were currently in treatment at a pervasive developmental disorder service of one of several centers in a large geographic region were identified. Children who received a diagnosis of autism (N=46) or Asperger's syndrome (N=20) on the basis of a diagnostic interview and had an IQ in the nonretarded range were given a battery of cognitive, language, and behavioral tests. Families were contacted roughly 2 years after the date of their enrollment in the study, and many of the tests were readministered. RESULTS Children with Asperger's syndrome had better social skills and fewer autistic symptoms 2 years after study enrollment than the children with autism. The differences in outcome could not be explained by initial differences in IQ and language abilities. Children with autism who had developed verbal fluency at follow-up were very similar to the children with Asperger's syndrome at study enrollment. CONCLUSIONS Although the exact mechanism for the differences in outcome remain to be determined, it appears that Asperger's disorder and autism represent parallel but potentially overlapping developmental trajectories.
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Affiliation(s)
- P Szatmari
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada.
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King GJ, Archer L, Zhou D. Later orthodontic appliance reactivation stimulates immediate appearance of osteoclasts and linear tooth movement. Am J Orthod Dentofacial Orthop 1998; 114:692-7. [PMID: 9844210 DOI: 10.1016/s0889-5406(98)70202-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [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: 11/29/2022]
Abstract
BACKGROUND Delays in the appearance of osteoclasts at compression sites occur after orthodontic appliance reactivation, when this is done during both the period of osteoclast recruitment and the peak expansion in the osteoclast population. This experiment examines osteoclasts and tooth movement in alveolar bone after appliance reactivation coinciding with alveolar bone formation and the time when reactivation osteoclasts first appear (ie, 10 days after initial appliance activation). METHODS Bilateral orthodontic appliances were activated to mesially tip maxillary molars with 40 cN in 144 rats. After 10 days, all rats were randomized into two groups of 72. Group I had appliances reactivated in precisely the same manner as the first activation. Group II had appliances sham-reactivated. Nine to 12 rats were then sacrificed at 1, 3, 5, 7, 10, and 14 days in both groups (eg, day 1 represents an interval of 11 days after the first appliance activation and 1 day after either sham or real reactivation). Orthodontic movement was measured cephalometrically; changes in osteoclasts and root resorption were assessed at both compression and tension sites histomorphometrically. RESULTS Teeth in the reactivated group (Group I) displayed linear tooth movement (62.6 micrometers/day), and 0.9 mm tooth movement by day 10. Significant increases in osteoclast numbers, osteoclast surface percentage, and surface per individual osteoclast were evident in these animals by 1 day postreactivation (P <.01). Significant treatment-related increases in root resorption were not evident at compression sites at any time. CONCLUSIONS These findings indicate that, after appliance reactivation during the time when reactivation osteoclasts appear, a second cohort of osteoclasts can be recruited immediately, along with immediate and substantial tooth movement and no greater risk of root resorption.
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Affiliation(s)
- G J King
- Department of Orthodontics, School of Dentistry, University of Washington, Seattle, Washington 98195-7446, USA.
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Abstract
The use of seven benzoyl-L-amino acids for the detection of carboxypeptidase activities in strains of Gram-negative aerobic and facultatively anaerobic bacteria is reported. A simple overnight assay was designed using ninhydrin for the demonstration of the amino acid released by hydrolysis. Detection of carboxypeptidase activity was shown to have some taxonomic relevance within the Enterobacteriaceae; it was also useful for differentiation within the genus Acinetobacter and for distinction between Pseudomonas aeruginosa and Pseudomonas fluorescens.
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Affiliation(s)
- J D Perry
- Department of Microbiology, Freeman Hospital, Newcastle upon Tyne, UK.
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Archer L. [Predicting the future, today]. Servir 1998; 46:144-7. [PMID: 9709129] [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: 02/08/2023]
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Archer L. [Gene therapy in catholic thought]. Servir 1998; 46:148-54. [PMID: 9709130] [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: 02/08/2023]
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Archer L. Faculty uninformed in the information age? J Prof Nurs 1997; 13:1-2. [PMID: 9183102 DOI: 10.1016/s8755-7223(97)80016-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Abstract
OBJECTIVE To determine whether subtypes of children with pervasive developmental disorder (PDD) differed on variables that were relatively independent of distinguishing criteria. METHOD Higher-functioning children with PDD, 4 through 6 years of age, were differentiated into those with autism (n = 47) and those with Asperger's syndrome (n = 21) on the basis of delayed and deviant language development. The groups were then compared on a wide range of measures including PDD symptoms, adaptive behaviors in communication, socialization, and activities of daily living, and an assessment of verbal and nonverbal cognitive skills. RESULTS Significant differences between the groups existed on many PDD symptoms, adaptive behaviors, and cognitive measures of language competence, but not on aspects of nonverbal communication, nonverbal cognition, or motor development. CONCLUSION Subtypes of children with PDD can be identified that differ on variables relatively independent of defining characteristics. These findings should provide a firm foundation into research to determine whether children with autism and Asperger's syndrome also differ on outcome, etiology, and response to treatment.
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Affiliation(s)
- P Szatmari
- Department of Psychiatry, McMaster University, Hamilton, Ontario, Canada
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Abstract
OBJECTIVES Several advisory committees have recently recommended that alcohol consumption be limited to moderate levels. Moderate drinking has been defined generally as not more than two drinks per day for healthy men and not more than one drink per day for healthy, nonpregnant women. The impact of reducing alcohol consumption to within the recommended guidelines on the prevalence of two serious alcohol-related problems was examined by modeling the relationship between average daily ethanol intake and alcohol abuse and dependence. METHODS The recommended drinking guidelines, both in their existing form and modified by a measure of impairment, were applied to the observed distribution of consumption derived from a large representative survey of the US general population. RESULTS The results demonstrated that restricting drinking to the maximum allowable levels under the existing and the modified guidelines would reduce the prevalence of alcohol abuse and dependence by 14.2% and 47.1%, respectively, in the adult US general population. CONCLUSIONS Implications of these findings are discussed in terms of the validity of the assumptions underlying the models and the nature and direction of future research that would form the basis of newly developed guidelines for safe drinking limits.
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Affiliation(s)
- L Archer
- National Institute on Alcohol Abuse and Alcoholism, Rockville, Md. 20892
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Abstract
Although it is well known that informants often disagree about the degree of psychopathology in children, this issue has not been systematically evaluated in children with autism. The objective of this paper is to estimate the extent of agreement between parents and teachers on the assessment of autistic symptoms and adaptive behavior skills. We assessed 83 children, 4-6 years of age, with a diagnosis of pervasive developmental disorder (PDD), using the Autism Behavior Checklist (ABC) and the Vineland Adaptive Behavior Scales (VABS). Parents and teachers rated each child on each measure. While there was good agreement between informants on the VABS, teachers tended to rate the PDD children higher than parents. In contrast, there was virtually no agreement on the ABC. High levels of stress experienced by parents appeared to be associated with parents reporting more autistic behaviors and less adaptive skills than teachers. As with other child psychiatric disorders, caution must be exercised in combining information from several informants.
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Affiliation(s)
- P Szatmari
- Department of Psychiatry, Chedoke-McMaster Hospitals, Hamilton, Ontario, Canada
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Archer L. Limited access to dissertations and theses. J Prof Nurs 1993; 9:307-8. [PMID: 8300963 DOI: 10.1016/8755-7223(93)90001-s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Frommer W, Archer L, Boon B, Brunius G, Collins CH, Crooy P, Doblhoff-Dier O, Donikian R, Economidis J, Frontali C. Safe biotechnology (5). Recommendations for safe work with animal and human cell cultures concerning potential human pathogens. Appl Microbiol Biotechnol 1993; 39:141-7. [PMID: 7763726 DOI: 10.1007/bf00228597] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [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: 01/27/2023]
Abstract
The benefits of using animal or human cell cultures have been clearly demonstrated in diagnostic and therapeutic research and in their application for manufacturing. Cell cultures serve as a tools for the production of vaccines, receptors, enzymes, monoclonal antibodies and recombinant DNA-derived proteins. They represent an integral part of drug development for which corresponding facilities, equipment and manufacturing processes are required. Although the cells themselves offer no particular risk to workers in laboratories and production areas or to the environment, the cell cultures may be contaminated with viruses, mycoplasma, bacteria, yeast and fungi or might contain endogenous viruses. The containment level for animal and human cells is therefore determined by the risk class of these agents. The history of animal and human cell cultures has proved that they can be handled safely. The recommendations in this publication concern the safe handling of cell cultures (tissue explants, primary cell cultures) and permanent cell lines of animal and human origin. A classification system of safety precautions has been elaborated according to the potential for contamination with the pathogenic agents involved.
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Frommer W, Archer L, Boon B, Brunius G, Collins CH, Crooy P, Donikian R, Economidis I, Frontali C, Gaal T. Safe biotechnology (4). Recommendations for safety levels for biotechnological operations with microorganisms that cause diseases in plants. Appl Microbiol Biotechnol 1992; 38:139-40. [PMID: 1369136 DOI: 10.1007/bf00174457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 10/26/2022]
Abstract
The Working Party on Safety in Biotechnology of the European Federation of Biotechnology has proposed a classification of microorganisms that cause diseases in plants. In this paper appropriate safety levels are proposed for these classes of microorganisms in order to ensure that research, development and industrial fermentation work with plant pathogens will limit the risk of outbreaks of diseases in crops that could result from work with such microorganisms when they are cultivated in laboratories, glasshouses and biotechnology installations.
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Affiliation(s)
- W Frommer
- DECHEMA, EFB Secretariate, Frankfurt/Main
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Archer L. [Ethical and social issues on the human genome analysis]. ACTA MEDICA PORT 1992; 5:139-45. [PMID: 1595382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The modern technologies for human genome analysis raise a variety of ethical and social questions. The pre-symptomatic diagnostic of diseases of late expression is becoming possible for a rapidly increasing number of situations. The use of that knowledge by employers, insurance companies, schools, and society in general, could lead to discriminations and stigmatizations, in addition to adverse psychological reactions. DNA fingerprinting raises questions of privacy and personal autonomy in its applications to paternity proof, criminal proceedings, and establishment of data banks. The project of the immediate and complete sequencing of the human genome will lead to questions of economical ethics, as well as of access, commercialization and property rights of scientific information and materials obtained. It also favours a reducionistic mentality and international unbalances. The molecular biology of humans, which will follow the complete sequencing of the genome, may foster a rethinking of the concepts of freedom of self-determination (basic for moral responsibility) and of equality. The gene therapy and its possible extension to the betterment of the human species, pose questions of ethical limits to this technology. All these problems will have to be answered in terms of the application of the principle of ethical freedom for self-fulfillment, as a right of the human person, as well as of science and society. Scientific, economic and social interests have to be subordinated to the dignity of the human person.
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Affiliation(s)
- L Archer
- Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Monte da Caparica
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