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Shafer D, Ngo J, Lamb A, Vohra S. Unusual case report of concomitant lunate and scaphoid fractures without associated dislocation in a 16-year-old male. Int J Surg Case Rep 2024; 114:109146. [PMID: 38128295 PMCID: PMC10800694 DOI: 10.1016/j.ijscr.2023.109146] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 10/17/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
INTRODUCTION AND IMPORTANCE Lunate fractures without associated dislocations are rare injuries, combination scaphoid-lunate fractures without an associated dislocation are even more rare of which few are reported in the literature. CASE PRESENTATION This case report describes a 16-year-old otherwise healthy male with ipsilateral scaphoid and lunate fractures after punching a goalpost with his left hand, for which he had surgical management. This patient had a successful treatment with two headless compression screws through a single extended carpal tunnel approach. Surgery was performed within two weeks of injury after initially immobilized with a thumb spica splint. The postoperative period was complicated by noncompliance with weight-bearing status and missed three-month followup. However, by six months, subsequent visits demonstrated radiographic and clinical healing as well as full wrist range of motion without any other sequelae. CLINICAL DISCUSSION This case offers more evidence regarding this rare injury. Lunate fractures and scaphoid fractures can both be treated with open reduction and internal fixation using headless compression screws, however little evidence exists when it comes to treating them in combination. CONCLUSION The use of headless compression screws through a single extended carpal tunnel approach led to clinical and radiographic healing in a 16 year-old-male with combined scaphoid and lunate fractures at 6 month follow up.
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Affiliation(s)
- Dylan Shafer
- Community Memorial Hospital, 147 N. Brent Street, Ventura, CA 93003, United States of America.
| | - John Ngo
- Community Memorial Hospital, 147 N. Brent Street, Ventura, CA 93003, United States of America.
| | - Ashley Lamb
- Community Memorial Hospital, 147 N. Brent Street, Ventura, CA 93003, United States of America.
| | - Sahil Vohra
- Community Memorial Hospital, 147 N. Brent Street, Ventura, CA 93003, United States of America.
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Robles AS, Piple AS, DeSanto DJ, Lamb A, Gibbs SJ, Heckmann ND, Marecek GS. Standard versus low-dose computed tomography for assessment of acetabular fracture reduction using novel step and gap measurement technique. Eur J Orthop Surg Traumatol 2023; 33:3703-3709. [PMID: 37311829 PMCID: PMC10651530 DOI: 10.1007/s00590-023-03616-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 04/08/2023] [Accepted: 06/04/2023] [Indexed: 06/15/2023]
Abstract
PURPOSE Quality of reduction is of paramount importance after acetabular fracture and is best assessed on computed tomography (CT). A recently proposed measurement technique for assessment of step and gap displacement is reproducible but has not been validated. The purpose of this study is to validate a well-established measurement technique against known displacements and to determine if it can be used with low dose CT. METHODS Posterior wall acetabular fractures were created in 8 cadaveric hips and fixed at known step and gap displacements. CT was performed at multiple radiation doses for each hip. Four surgeons measured step and gap displacement for each hip at all doses, and the measurements were compared to known values. RESULTS There were no significant differences in measurements across surgeons, and all measurements were found to have positive agreement. Measurement error < 1.5 mm was present in 58% of gap measurements and 46% of step measurements. Only for step measurements at a dose of 120 kVp did we observe a statistically significant measurement error. There was a significant difference in step measurements made by those with greater and those with fewer years in practice. CONCLUSION Our study suggests this technique is valid and accurate across all doses. This is important as it may reduce the amount of radiation exposure for patients with acetabular fractures.
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Affiliation(s)
- Abrianna S Robles
- Department of Orthopaedic Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
| | - Amit S Piple
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA
| | - Donald J DeSanto
- Department of Orthopaedic Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Ashley Lamb
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA
| | | | - Nathanael D Heckmann
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA
| | - Geoffrey S Marecek
- Department of Orthopaedic Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
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3
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Lamb A, McKinney B, Frousiakis P, Diaz G, Sweet S. A Comparative Study of Traditional Technique Guide versus Virtual Reality in Orthopedic Trauma Training. Adv Med Educ Pract 2023; 14:947-955. [PMID: 37693298 PMCID: PMC10487700 DOI: 10.2147/amep.s395087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 08/20/2023] [Indexed: 09/12/2023]
Abstract
Background Medical and surgical education is an expansive field fraught with many challenges. Technology such as virtual reality could be a new venue that can offer a solution to improve surgical training. Objective The objective of this prospective, blinded study was to evaluate virtual reality as a training model for orthopedic surgery and surgical training at large. Methods Fourth-year medical students with novice skills volunteered to participate in this observer-blinded 1:1 randomized controlled trial. They had no prior experience in tibia intramedullary nail (IMN) surgery. They were randomized into traditional technique guide education and virtual reality. The participants were timed on their mock surgery, and a blinded observer was utilized to subjectively grade their performance throughout the procedure using the Global Assessment 5-point Rating Scale and Procedure-Specific Checklist. Results Thirty-eight participants were recruited and randomized into virtual reality (19) and traditional (19) groups. There were trends in all categories favoring the virtual reality group. The VR group had improved time to completion (9.6 minutes vs 12.2 minutes, P = 0.034) and reduced need for corrections within the mock procedure (2.2 vs 2.5; P = 0.05). Conclusion Virtual reality training was more effective than traditional training in learning and completing the steps of the tibia IMN surgery for novice medical students. Virtual reality training may be a useful method to augment orthopedic education and surgical training.
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Affiliation(s)
- Ashley Lamb
- Orthopedic Surgery, Community Memorial Hospital, Ventura, CA, USA
| | - Brandon McKinney
- Orthopedic Surgery, Community Memorial Hospital, Ventura, CA, USA
| | | | - Graal Diaz
- Research Department-Graduate Medical Education, Community Memorial Healthcare System, Ventura, CA, USA
| | - Stephan Sweet
- Orthopedic Surgery, Community Memorial Hospital, Ventura, CA, USA
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McKinney B, Dbeis A, Lamb A, Frousiakis P, Sweet S. Virtual Reality Training in Unicompartmental Knee Arthroplasty: A Randomized, Blinded Trial. J Surg Educ 2022; 79:1526-1535. [PMID: 35863958 DOI: 10.1016/j.jsurg.2022.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/09/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE The objective of this study was to evaluate the effectiveness of immersive virtual reality training in orthopedic surgery education in comparison to the standard technique guide for fixed-bearing medial unicompartmental knee arthroplasty DESIGN: Participants included 22 orthopedic surgery residents who were randomized to undergo fixed-bearing medial unicompartmental knee arthroplasty (UKA) surgical training with either an immersive virtual reality technology or by studying the traditional technique guide. Participants were randomized within their training year via block randomization. Participants then performed a medial UKA on a SawBone model using standard industry system surgical trays and equipment. Proficiency, timing, number of errors made, and subjective data were obtained during and after the SawBone procedure. A blinded observer was utilized to obtain objective data. SETTING Community Memorial Health System, a primary clinical care institution in Ventura, California. PARTICIPANTS Twenty-two orthopedic surgery residents were randomly selected. There were 7 PGY-1 residents (3 TG, 4 VR), 7 PGY-2s (4 TG, 3 VR), 3 PGY-3s (1 TG, 2 VR), 3 PGY-4s (2 TG, 1 VR), and 2 PGY-5s (1 TG, 1 VR) in total. Eligibility criteria were 1) an active orthopedic surgery resident, 2) no prior immersive VR surgical training, and 3) no prior experience with the Zimmer PPK implants or its technique guide. All participants completed the study. RESULTS Residents were randomized evenly in the virtual reality (n = 11) and technique guide groups (n = 11). Analysis showed that residents who trained with the immersive VR executed significantly more steps correctly (33 vs. 27, p < 0.01) and completed their procedure in significantly faster time (26.7 vs. 35.4 minutes, p < 0.01). They also scored higher in all global assessment categories reaching significance in 4 of 5 categories. Subjective questionnaire responses demonstrated positive feedback within both groups with a trend toward virtual reality. No adverse events were recorded. CONCLUSIONS Immersive virtual reality was more effective than traditional training for the participants of this study. There are numerous potential applications of this technology and it provides an alternative learning modality to accommodate different learning styles.
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Affiliation(s)
- Brandon McKinney
- Orthopedic Surgery Resident, Graduate Medical Education, Community Memorial Hospital, Ventura, California
| | - Ammer Dbeis
- Orthopedic Surgery Resident, Graduate Medical Department, Community Memorial Hospital, Ventura, California.
| | - Ashley Lamb
- Orthopedic Surgery Trauma Fellow, Department of Orthopedic Surgery, University of Southern California, Los Angeles, California
| | - Petros Frousiakis
- Orthopedic Surgery Faculty, Department of Orthopedic Surgery, Community Memorial Hospital, Los Angeles, California
| | - Stephan Sweet
- Orthopedic Surgery Faculty, Department of Orthopedic Surgery, Community Memorial Hospital, Los Angeles, California
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Erickson A, Berglund E, He M, Marklund M, Mirzazadeh R, Schultz N, Bergenstråhle L, Kvastad L, Andersson A, Bergenstråhle J, Larsson L, Rajakumar T, Thrane K, Ji A, Tarish F, Tanoglidi A, Maaskola J, Colling R, Mirtti T, Hamdy F, Woodcock D, Helleday T, Mills I, Lamb A, Lundenberg J. The spatial landscape of clonal somatic mutations in benign and malignant prostate epithelia. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00563-2] [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: 11/04/2022]
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Charlton P, O'Reilly D, Philippou Y, Rao S, Lamb A, Higgins G, Hamdy F, Verrill C, Bryant R, Buffa F. PO-1160: A pilot dual-platform transcriptomic analysis of diagnostic prostate biopsies & radical RT response. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01178-6] [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: 11/26/2022]
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Chung J, Donelan K, Macklin EA, Schwartz A, Elsharkawi I, Torres A, Hsieh YG, Parker H, Lorenz S, Patsiogiannis V, Santoro SL, Wylie M, Clarke L, Estey G, Baker S, Bauer PE, Bull M, Chicoine B, Cullen S, Frey-Vogel A, Gallagher M, Hasan R, Lamb A, Majewski L, Mast J, Riddell T, Sepucha K, Skavlem M, Skotko BG. A randomized controlled trial of an online health tool about Down syndrome. Genet Med 2020; 23:163-173. [PMID: 32879436 DOI: 10.1038/s41436-020-00952-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/13/2020] [Accepted: 08/13/2020] [Indexed: 12/22/2022] Open
Abstract
PURPOSE We sought to determine if a novel online health tool, called Down Syndrome Clinic to You (DSC2U), could improve adherence to national Down syndrome (DS) guidelines. We also sought to determine if primary care providers (PCPs) and caregivers are satisfied with this personalized online health tool. METHODS In a national, randomized controlled trial of 230 caregivers who had children or dependents with DS without access to a DS specialist, 117 were randomized to receive DSC2U and 113 to receive usual care. The primary outcome was adherence to five health evaluations indicated by national guidelines for DS. DSC2U is completed electronically, in all mobile settings, by caregivers at home. The outputs-personalized checklists-are used during annual wellness visits with the patient's PCP. RESULTS A total of 213 participants completed a 7-month follow-up evaluation. In the intention-to-treat analysis, the intervention group had a 1.6-fold increase in the number of indicated evaluations that were recommended by the primary care provider or completed compared with controls. Both caregivers and PCPs reported high levels of satisfaction with DSC2U. CONCLUSIONS DSC2U improved adherence to the national DS health-care guidelines with a novel modality that was highly valued by both caregivers and PCPs.
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Affiliation(s)
- Jeanhee Chung
- Laboratory of Computer Science, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Karen Donelan
- Department of Medicine, Harvard Medical School, Boston, MA, USA.,Health Policy Research Center, Mongan Institute, Massachusetts General Hospital, Boston, MA, USA
| | - Eric A Macklin
- Biostatistics Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Alison Schwartz
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA.,Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Ibrahim Elsharkawi
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA
| | - Amy Torres
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA
| | - Yichuan Grace Hsieh
- Laboratory of Computer Science, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Holly Parker
- Laboratory of Computer Science, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Stephen Lorenz
- Laboratory of Computer Science, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Vasiliki Patsiogiannis
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA
| | - Stephanie L Santoro
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA.,Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Mark Wylie
- Laboratory of Computer Science, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Lloyd Clarke
- Laboratory of Computer Science, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Greg Estey
- Laboratory of Computer Science, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Sandra Baker
- Down Syndrome Association of Los Angeles, Los Angeles, CA, USA
| | | | - Marilyn Bull
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Brian Chicoine
- Advocate Medical Group Adult Down Syndrome Center, Park Ridge, IL, USA
| | - Sarah Cullen
- Massachusetts Down Syndrome Congress, Boston, MA, USA
| | - Ariel Frey-Vogel
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | | | - Reem Hasan
- Department of Internal Medicine and Pediatrics, Oregon Health & Science University, Portland, OR, USA
| | - Ashley Lamb
- Health and Wellness, University of New Hampshire, Durham, NH, USA
| | | | | | - Travis Riddell
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
| | - Karen Sepucha
- Health Decision Sciences Center, Massachusetts General Hospital, Boston, MA, USA
| | | | - Brian G Skotko
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA. .,Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
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Laggis CW, Lamb A, Secrest AM, Ufkes N, Halwani AS, Tao R, Gaffney D, Miles RR, Florell SR, Wada D. Favourable outcomes in folliculotropic mycosis fungoides after multimodality treatment in a single institution. J Eur Acad Dermatol Venereol 2020; 35:e42-e45. [PMID: 32594555 DOI: 10.1111/jdv.16790] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/11/2020] [Accepted: 06/24/2020] [Indexed: 12/16/2022]
Affiliation(s)
- C W Laggis
- Department of Dermatology, University of Utah, Salt Lake City, UT, USA
| | - A Lamb
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - A M Secrest
- Department of Dermatology, University of Utah, Salt Lake City, UT, USA.,Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA
| | - N Ufkes
- Medical University of South Carolina School of Medicine, Charleston, SC, USA
| | - A S Halwani
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA.,Department of Oncology, University of Utah, Salt Lake City, UT, USA
| | - R Tao
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA.,Department of Radiation Oncology, University of Utah, Salt Lake City, UT, USA
| | - D Gaffney
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA.,Department of Radiation Oncology, University of Utah, Salt Lake City, UT, USA
| | - R R Miles
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA.,Department of Pathology, University of Utah, Salt Lake City, UT, USA.,ARUP Laboratories, Salt Lake City, UT, USA
| | - S R Florell
- Department of Dermatology, University of Utah, Salt Lake City, UT, USA
| | - D Wada
- Department of Dermatology, University of Utah, Salt Lake City, UT, USA.,Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
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Campbell A, Omer A, Popert R, Lamb A. Local anaesthetic transperineal prostate (LATP) biopsy using the precision point access system: A step-by-step video. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/s1569-9056(19)31670-7] [Citation(s) in RCA: 2] [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: 11/28/2022]
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Hinton A, Perea-Ortiz M, Winch J, Briggs J, Freer S, Moustoukas D, Powell-Gill S, Squire C, Lamb A, Rammeloo C, Stray B, Voulazeris G, Zhu L, Kaushik A, Lien YH, Niggebaum A, Rodgers A, Stabrawa A, Boddice D, Plant SR, Tuckwell GW, Bongs K, Metje N, Holynski M. A portable magneto-optical trap with prospects for atom interferometry in civil engineering. Philos Trans A Math Phys Eng Sci 2017; 375:rsta.2016.0238. [PMID: 28652493 PMCID: PMC5487716 DOI: 10.1098/rsta.2016.0238] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/12/2016] [Indexed: 05/13/2023]
Abstract
The high precision and scalable technology offered by atom interferometry has the opportunity to profoundly affect gravity surveys, enabling the detection of features of either smaller size or greater depth. While such systems are already starting to enter into the commercial market, significant reductions are required in order to reach the size, weight and power of conventional devices. In this article, the potential for atom interferometry based gravimetry is assessed, suggesting that the key opportunity resides within the development of gravity gradiometry sensors to enable drastic improvements in measurement time. To push forward in realizing more compact systems, techniques have been pursued to realize a highly portable magneto-optical trap system, which represents the core package of an atom interferometry system. This can create clouds of 107 atoms within a system package of 20 l and 10 kg, consuming 80 W of power.This article is part of the themed issue 'Quantum technology for the 21st century'.
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Affiliation(s)
- A Hinton
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - M Perea-Ortiz
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - J Winch
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - J Briggs
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - S Freer
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - D Moustoukas
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - S Powell-Gill
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - C Squire
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - A Lamb
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - C Rammeloo
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - B Stray
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - G Voulazeris
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - L Zhu
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - A Kaushik
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - Y-H Lien
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - A Niggebaum
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - A Rodgers
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - A Stabrawa
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - D Boddice
- School of Engineering, Department of Civil Engineering, University of Birmingham, Birmingham B15 2TT, UK
| | - S R Plant
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - G W Tuckwell
- RSK, 18 Frogmore Road, Hemel Hempstead, Hertfordshire HP3 9RT, UK
| | - K Bongs
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
| | - N Metje
- School of Engineering, Department of Civil Engineering, University of Birmingham, Birmingham B15 2TT, UK
| | - M Holynski
- School of Physics and Astronomy, Metallurgy and Materials Building, University of Birmingham, Birmingham B15 2TT, UK
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Phalan B, Green RE, Dicks LV, Dotta G, Feniuk C, Lamb A, Strassburg BBN, Williams DR, Ermgassen EKHJZ, Balmford A. How can higher-yield farming help to spare nature? Science 2016; 351:450-1. [DOI: 10.1126/science.aad0055] [Citation(s) in RCA: 158] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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King D, Lamb A, Carrillo A, Appasamy P. Effects of exercise and anxiety on salivary IgA production in female college athletes (MUC9P.820). The Journal of Immunology 2014. [DOI: 10.4049/jimmunol.192.supp.199.7] [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] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
This study determined whether the fitness status of college athletes, and/or their measurable anxiety levels, had an effect on production of salivary sIgA. High-intensity physical training in elite sports has a negative effect on immune responses, while moderate-intensity training has a positive effect. In addition, psychological stress has a negative impact on immune function. Few studies have looked at the interplay between physical training and stress on the immune response. In this study, we evaluated 2 populations of female college athletes (Division III): one population participating in intense training (ice hockey), and the other group was in the “off season” (soccer). Maximal oxygen consumption (aerobic fitness) was estimated using the modified Balke sub-maximal treadmill test. Saliva samples were collected for sIgA and cortisol measurement. The anxiety levels were measured using a GAD-7 survey. We found that the team participating in their sport (hockey) had higher salivary IgA levels than the team that was “off season” (soccer). There was a wide range of anxiety levels and no correlation between anxiety and salivary IgA or sport. Higher levels of salivary IgA may confer added immune protection to the in-season athletes and these data suggest that the female college athletes were not training to the point of negatively impacting their immune responses. Strategies to maintain immune health are important to consider in designing training programs for athletes.
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Lamb A, Evans G, King JR. Mathematical Modelling of Toxicity Associated with Intracellular Chromium Reduction. Bull Math Biol 2013; 75:1472-500. [DOI: 10.1007/s11538-013-9856-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 05/20/2013] [Indexed: 11/28/2022]
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Hasan I, Lamb A, Brennan M, Lockhart P. Oral Bacterial Pathogens as a Cause of Catheter-Related Infection. Oral Surg Oral Med Oral Pathol Oral Radiol 2012. [DOI: 10.1016/j.oooo.2012.05.041] [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: 10/28/2022]
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Solomon B, Chiappori A, Lamb A, Gawlicki M, Kim D, Park K, Salgia R, Wilner K, Reisman A, Petersen J. 3030 POSTER Preliminary Characterization of Visual Events Reported by Patients (Pts) Receiving Crizotinib for the Treatment of Advanced ALK-Positive Non-Small Cell Lung Cancer (NSCLC). Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71103-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Jameson S, Lamb A, Wallace W, Sher J, Marx C, Reed M. Orthopaedic training experience in the UK and Ireland: An analysis using the elogbook. Surgeon 2009; 7:243-9. [DOI: 10.1016/s1479-666x(09)80093-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jameson SS, Lamb A, Wallace WA, Sher JL, Marx C, Reed MR. Trauma experience in the UK and Ireland: analysis of orthopaedic training using the FHI eLogbook. Injury 2008; 39:844-52. [PMID: 18632101 DOI: 10.1016/j.injury.2008.03.030] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2007] [Revised: 12/26/2007] [Accepted: 03/13/2008] [Indexed: 02/02/2023]
Abstract
Surgical trainees routinely provide evidence of their training and operative experience for assessment. National comparative data on the number of procedures performed during training was previously unavailable in the UK. Since 2003 every trainee in Trauma and Orthopaedics (T&O) in the UK and Ireland has submitted data recording their operative experience electronically via the Faculty of Health Informatics (FHI) eLogbook. This provides detailed data on trainee, trainer, hospital and training programme performance. This data has been analysed for trauma surgery. By March 2007 there were 1053 T&O Specialist Registrars with operations logged. Trauma operations performed and uploaded during the previous 3 years have been included. Each trainee's work is analysed by 'year-in-training' (YIT, 1-6). Data on levels of supervision and potentially missed opportunities (where the trainee was present but assisted rather than performed the operation) was analysed. The mean number of trauma operations performed annually by trainees was 109, 120, 110, 122, 98 and 84 (total 643) for YIT 1-6, respectively. 22% of the operations at which a trainee was present were potentially missed opportunities. A high level of experience is gained in hip fracture surgery (121 operations performed), intramedullary nailing (38) and ankle (47) stabilisation over the 6 years of training. However, the mean number of tendon repairs (18), tension band wires (13), external fixators (12) and children's supracondylar fracture procedures (9) performed is low. We also report figures for complex fracture stabilisation. The eLogbook remains a powerful tool which can provide accurate information to support in-depth analysis of trainees, trainers, and training programmes. Based on this analysis, we suggest 'standard setting' to identify trainees performing fewer operations than required during their training. We have also established a baseline which can be used to identify the consequences of changes to length of training and working hours.
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Affiliation(s)
- S S Jameson
- Orthopaedic ePortfolio Validation and Audit Committee and Specialty Registrar, Trauma & Orthopaedics, Royal Hospital for Sick Children, Dalnair Street, Glasgow, United Kingdom.
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Siu LL, Burris HA, Mileshkin LR, Camidge DR, Eckhardt SG, Lamb A, Chen EX, Jones SF, Xu H, Fingert H. A phase I clinical, pharmacokinetic (PK) and pharmacodynamic (PD) evaluation of PF-00562271 targeting focal adhesion kinase (FAK) in patients (pts) with advanced solid tumors. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.3534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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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Affiliation(s)
- J L Sher
- Department of Orthopaedics and Trauma Surgery, Wansbeck Hospital, Woodhorn Lane, Ashington, Northumberland NE63 9JJ, England, UK.
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Abstract
AbstractFaunal change at the Early-Middle Pleistocene boundary in Europe has long been a topic for discussion. However, analyses of large mammal turnover at this time in Africa have been lacking, largely because of the low number of sites dated to this interval. Recent work, particularly in the last 10 years, has resulted in a much larger published sample of sites and we synthesize these data in this paper. In our multivariate (TWINSPAN) analyses of African and Levantine large mammal faunas we found that localities were subdivided by geographic regions, not by age. There were some small-scale changes with the appearance or extinction of particular taxa, but there was no large-scale turnover such as that seen in Europe. The Levant was included as a possible route for faunal interchange with east Africa, but no similarities were found between these areas. It therefore appears that the modern zoogeographic separation of the Levant and north Africa into the Palaearctic region and sub-Saharan Africa into the African region can be traced back to at least the Early-Middle Pleistocene boundary.
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Affiliation(s)
- H. J. O’Regan
- School of Biological & Earth Sciences, Liverpool John Moores University
Liverpool, L3 3AF, UK
h.j.o’
| | - L. C. Bishop
- School of Biological & Earth Sciences, Liverpool John Moores University
Liverpool, L3 3AF, UK
h.j.o’
| | - A. Lamb
- School of Biological & Earth Sciences, Liverpool John Moores University
Liverpool, L3 3AF, UK
h.j.o’
| | - S. Elton
- Department of Anatomy, Hull York Medical School, University of Hull
Hull, HU6 7RX, UK
| | - A. Turner
- School of Biological & Earth Sciences, Liverpool John Moores University
Liverpool, L3 3AF, UK
h.j.o’
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Milders M, Crawford JR, Lamb A, Simpson SA. Differential deficits in expression recognition in gene-carriers and patients with Huntington's disease. Neuropsychologia 2003; 41:1484-92. [PMID: 12849766 DOI: 10.1016/s0028-3932(03)00079-4] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [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: 10/27/2022]
Abstract
Previous studies in symptomatic patients and asymptomatic gene-carriers of Huntington's disease (HD) reported a differential deficit in the recognition of facial expressions of disgust. This impairment may point to involvement of the basal ganglia in the recognition of disgust. In this study, we compared the performance of 20 patients with symptoms of HD, 20 gene-carriers of HD and 20 healthy controls on two tests of facial expressions in order to further investigate the role of the basal ganglia in disgust recognition. Recognition of fear, rather than disgust, was most severely impaired in the patients, who were also impaired at recognising expressions of anger, disgust and sadness. Direct testing for a differential deficit in disgust at the group level (and at the level of individual HD cases) revealed that the patients were in fact significantly more impaired on the other negative expressions than on disgust. The gene-carriers were not impaired on any expression, although there was a trend for the gene-carriers to be poorer at recognising fearful faces than the controls. We argue that the expression recognition performance of the patients and gene-carriers simply reflects differences in task difficulty, rather than dysfunction of any mechanisms dedicated to specific emotions. In contrast to previous studies in patients or gene-carriers of HD, our findings provide no evidence for a role of the basal ganglia in the recognition of disgust and cast doubt on whether results from HD patients and gene-carriers can be used in support of a double dissociation between recognition of disgust and fear.
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Affiliation(s)
- M Milders
- Department of Psychology, University of Aberdeen, Aberdeen AB24 2UB, Scotland, UK.
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Geissbuhler A, Lovis C, Lamb A, Sphani S. Experience with an XML/HTTP-based federative approach to develop a hospital-wide clinical information system. Stud Health Technol Inform 2002; 84:735-9. [PMID: 11604834] [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: 02/21/2023]
Abstract
The authors present a two-year experience with an approach aimed at federating applications into a component-based hospital-wide clinical information system. Recognizing the need for better integration, clearer separation of knowledge from applications, as well as the necessity to respect and integrate the diversity of roles in a healthcare network, a strategy was implemented that included the development of a shared vision, organizational changes to promote appropriation at all levels, and the elaboration and maintenance of a common architecture and terminology by an instrumental technical group. Choices for federative technologies were in part based on their level of acceptance and potential to evolve. XML was used as the syntactic framework and HTTP as the transfer protocol. Within twelve months, the shared vision was developed, the architecture was specified, the key central components implemented, incorporated into the applications, and applications teams started producing shareable services using XML and HTTP.
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Affiliation(s)
- A Geissbuhler
- Division of Medical Informatics, Geneva University Hospital, 1211 Geneva 14, Switzerland.
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Affiliation(s)
- A Lamb
- Publications Department, Royal College of Physicians
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Lamb A. Skilimix--new staff roles in health care. Clin Med (Lond) 2001; 1:413-4. [PMID: 11706891 PMCID: PMC4952262 DOI: 10.7861/clinmedicine.1-5-413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- A Lamb
- Publications Department, Royal College of Physicians
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Lamb A. Biopharmaceuticals: Biochemistry and Biotechnology, Edited by Gary Walsh, John Wiley and Sons, Chichester, 1998. xvi+431 pp, ISBN 0-471-977896, £29.95. Talanta 2001. [DOI: 10.1016/s0039-9140(01)00351-4] [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: 10/18/2022]
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Whatling P, Wallace WA, Lamb A. Computer assisted learning aids management of course information. BMJ 2001; 322:1428. [PMID: 11397757 PMCID: PMC1120484] [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: 02/20/2023]
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Lamb A. Are generalists still needed in a specialised world? General practice enables doctors to maintain general medical skills. BMJ 2000; 320:1728. [PMID: 10917702] [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: 02/17/2023]
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Bryndorf T, Lundsteen C, Lamb A, Christensen B, Philip J. Rapid prenatal diagnosis of chromosome aneuploidies by interphase fluorescence in situ hybridization: a one-year clinical experience with high-risk and urgent fetal and postnatal samples. Acta Obstet Gynecol Scand 2000; 79:8-14. [PMID: 10646809] [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: 02/15/2023]
Abstract
OBJECTIVES To evaluate the clinical utility of rapid prenatal and postnatal detection of common chromosome aneuploidies by interphase fluorescence in situ hybridization (FISH) analysis with DNA probes. DESIGN Four hundred and seventy-seven high-risk and/or urgent amniotic fluid, chorionic villus and fetal and postnatal blood samples were prospectively examined by FISH with probes specific for chromosomes 13, 18, 21, X, and Y and results were reported within 48 hours. All FISH results were followed by conventional chromosome analysis, if possible. SETTING Cytogenetic service laboratory at the tertiary referral center, Rigshospitalet in Copenhagen. MAIN OUTCOME MEASURES The fraction of clinically significant chromosome aneuploidies that was detected by FISH analysis, and the fraction of terminations that was based on FISH and ultrasound results rather than on conventional cytogenetic results. RESULTS The FISH assay detected 76% of the clinically significant chromosome abnormalities as determined by subsequent cytogenetic analysis. Seventy-two percent of the terminations of the chromosomally abnormal pregnancies were based on FISH and ultrasound results rather than on conventional cytogenetic results. CONCLUSION FISH analysis is a clinically useful adjunctive tool to conventional pre- and postnatal cytogenetic analysis. The assay rapidly detects the majority of clinically significant chromosome abnormalities, thus facilitating difficult pre- and postnatal clinical decisions.
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Affiliation(s)
- T Bryndorf
- Department of Clinical Genetics, The Juliane Marie Center, Rigshospitalet, University of Copenhagen, Denmark
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Evgenidou A, Konkle A, D'Ambrosio A, Corcoran A, Bowen J, Brown E, Corcoran D, Dearholt C, Fern S, Lamb A, Michalowski J, Ruegg I, Cebrián J. Effects of Increased Nitrogen Loading on the Abundance of Diatoms and Dinoflagellates in Estuarine Phytoplanktonic Communities. Biol Bull 1999; 197:292-294. [PMID: 28281808 DOI: 10.2307/1542659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Abstract
OBJECTIVE To determine the perceived benefit, pattern and problems of use of the Odstock Dropped Foot Stimulator (ODFS) and the users' opinion of the service provided. DESIGN Questionnaire sent in a single mailshot to current and past users of the ODFS. Returns were sent anonymously. SETTING Outpatient-based clinical service. SUBJECTS One hundred and sixty-eight current and 123 past users with diagnoses of stroke (CVA), multiple sclerosis (MS), incomplete spinal cord injury (SCI), traumatic brain injury (TBI) and cerebral palsy (CP). INTERVENTION Functional electrical stimulation (FES) to correct dropped foot in subjects with an upper motor neuron lesion, using the ODFS. MAIN OUTCOME MEASURES Purpose-designed questionnaire. RESULTS Return rate 64% current users (mean duration of use 19.5 months) and 43% past users (mean duration of use 10.7 months). Principal reason cited for using equipment was a reduction in the effort of walking. Principal reasons identified for discontinuing were an improvement in mobility, electrode positioning difficulties and deteriorating mobility. There were some problems with reliability of equipment. Level of service provided was thought to be good. CONCLUSION The ODFS was perceived by the users to be of considerable benefit. A comprehensive clinical follow-up service is essential to achieve the maximum continuing benefit from FES-based orthoses.
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Affiliation(s)
- P N Taylor
- Department of Medical Physics and Biomedical Engineering, Salisbury District Hospital, Wiltshire, UK.
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Chen Z, Notohamiprodjo M, Guan XY, Paietta E, Blackwell S, Stout K, Turner A, Richkind K, Trent JM, Lamb A, Sandberg AA. Gain of 9p in the pathogenesis of polycythemia vera. Genes Chromosomes Cancer 1998; 22:321-4. [PMID: 9669670 DOI: 10.1002/(sici)1098-2264(199808)22:4<321::aid-gcc8>3.0.co;2-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [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: 11/11/2022] Open
Abstract
Polycythemia vera (PV) is a clonal stem cell disorder characterized by excessive erythrocyte production, resulting in absolute erythrocytosis. No specific structural chromosomal abnormalities have been reported in PV to date. We have observed two cases of PV with an extra i(9)(p10) as the sole anomaly, and FISH analysis using a 9p-specific chromosome microdissection probe showed that two other PV patients previously identified as having an add(18p) and an add(1p) as the primary changes actually carried a der(18)t(9;18)(p12;p11.2) and a der(1)t(1;9)(p12;p12), respectively. The same FISH assay was employed to evaluate domain signals on interphase cells of 15 more cases of PV with normal karyotypes and five normal controls. Two patients were observed with a significant increase in the percentage of cells with three domain signals. Our results strongly indicate that an additional i(9)(p10) is a new and recurrent primary chromosome anomaly in PV, and, in consideration of trisomy 9 being one of the most common anomalies in PV, amplification of a gene or genes on 9p, but not on 9q, may play a crucial role in the pathogenesis of PV.
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Affiliation(s)
- Z Chen
- Genzyme Genetics, Santa Fe, New Mexico 87505, USA
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Abstract
The radiation reaction from the surface dose to a patient's skin is clinically important as an indicator of tolerance to treatment and is frequently the most visible side-effect from external beam radiotherapy. To quantify surface dose, its build-up was investigated in a solid water phantom over a range of field sizes, source to skin distances, wedge angles and beam shaping conditions. These data were analysed and used to produce an empirical model of the effect of these factors which predicted surface dose to within 5% under test conditions. The effects of changing treatment techniques was investigated by comparing fixed to dynamic wedges, and multileaf collimator (MLC) with alloy blocks. It was found that the MLC reduced the surface dose relative to alloy blocks but that dynamic wedges made no change relative to open fields. Fixed wedges reduced the relative surface dose as a consequence of beam hardening. It is hoped that routine clinical use of the model to calculate skin dose will increase awareness of situations in which the skin sparing effect of modern linear accelerators may be compromised.
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Affiliation(s)
- A Lamb
- Medical Physics Department, Royal Devon and Exeter Healthcare NHS Trust, UK
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Huys G, Kämpfer P, Altwegg M, Kersters I, Lamb A, Coopman R, Lüthy-Hottenstein J, Vancanneyt M, Janssen P, Kersters K. Aeromonas popoffii sp. nov., a mesophilic bacterium isolated from drinking water production plants and reservoirs. Int J Syst Bacteriol 1997; 47:1165-71. [PMID: 9336924 DOI: 10.1099/00207713-47-4-1165] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We examined the taxonomic position of seven Aeromonas isolates, recovered from Flemish and Scottish drinking water production plants and reservoirs, which were previously recognized by numerical analysis of genomic AFLP fingerprints as members of an unknown Aeromonas taxon that most closely resembled the species Aeromonas bestiarum (DNA hybridization group [HG] 2). The new phenotypic and DNA-DNA hybridization data obtained in this study show that the A. bestiarum-like strains constitute a separate Aeromonas species, for which the name Aeromonas popoffii sp. nov. is being proposed. The new species exhibited an internal DNA relatedness ranging from 79 to 100% and was 22 to 63% related to the type or reference strains of other Aeromonas spp. The highest DNA binding values were determined with A. bestiarum (51 to 63%), followed by Aeromonas hydrophila sensu stricto (HG1; 50 to 60%) and Aeromonas salmonicida (HG3; 39 to 55%). Although fingerprints generated by ribotyping and cellular fatty acid analysis often were highly similar, minor differences between the respective fingerprints were of significance for the differentiation of A. popoffii from its closest taxonomic neighbors, HG1, HG2, and HG3. Phenotypically, all seven strains of A. popoffii were positive for acid and gas production from D-glucose and glycerol, growth in KCN broth, arginine dihydrolase, DNase, Voges-Proskauer reaction, and resistance to vibriostatic agent O/129 and ampicillin but displayed negative reactions for production of urease, tryptophan deaminase, ornithine decarboxylase, and lysine decarboxylase (LDC). None of the strains displayed strong hemolytic activity. The lack of D-sucrose fermentation and LDC production and the ability to utilize DL-lactate as the sole energy and carbon source were useful characteristics for the biochemical separation of A. popoffii from A. bestiarum. Other Aeromonas spp. could be differentiated phenotypically from the new species by at least two features. The chromosomal G+C content of A. popoffii ranges from 57.7 to 59.6 mol%. Strain LMG 17541 is proposed as the type strain.
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Affiliation(s)
- G Huys
- Laboratorium voor Microbiologie, Universiteit Gent, Belgium.
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Richkind KE, Lamb A, Lytle C, Velasco J. A third case of apparent t(2;4)(p23;q25) represents ins(2;4) with deletion of 2p. Leukemia 1996; 10:1847. [PMID: 8892694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- K E Richkind
- Genzyme Genetics Laboratory, Santa Fe, NM 87505, USA
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Orenstein R, Reynolds L, Karabaic M, Lamb A, Markowitz SM, Wong ES. Do protective devices prevent needlestick injuries among health care workers? Am J Infect Control 1995; 23:344-51. [PMID: 8821109 DOI: 10.1016/0196-6553(95)90264-3] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.9] [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: 02/02/2023]
Abstract
OBJECTIVES To determine the effectiveness and direct of two protective devices-a shielded 3 ml safety syringe (Safety-Lok; Becton Dickinson and Co., Becton Dickinson Division, Franklin Lakes, N.J.) and the components of a needleless IV system (InterLink; Baxter Healthcare Corp., Deerfield, Ill.)--in preventing needlestick injuries to health care workers. DESIGN Twelve-month prospective, controlled, before-and-after trial with a standardized questionnaire to monitor needlestick injury rates. SETTING Six hospital inpatient units, consisting of three medical units, two surgical units (all of which were similar in patient census, acuity, and frequency of needlesticks), and a surgical-trauma intensive care unit, at a 900-bed urban university medical center. PARTICIPANTS All nursing personnel, including registered nurses, licensed practical nurses, nursing aides, and students, as well as medical teams consisting of an attending physician, resident physician, interns, and medical students on the study units. INTERVENTION After a 6-month prospective surveillance period, the protective devices were randomly introduced to four of the chosen study units and to the surgical-trauma intensive care unit. RESULTS Forty-seven needlesticks were reported throughout the entire study period, 33 in the 6 months before and 14 in the 6 months after the introduction of the protective devices. Nursing staff members who were using hollow-bore needles and manipulating intravenous lines accounted for the greatest number of needlestick injuries in the pre-intervention period. The overall rate of needlestick injury was reduced by 61%, from 0.785 to 0.303 needlestick injuries per 1000 health care worker-days after the introduction of the protective devices (relative risk = 1.958; 95% confidence interval, 1.012 to 3.790; p = 0.046). Needlestick injury rates associated with intravenous line manipulation, procedures with 3 ml syringes, and sharps disposal were reduced by 50%; however, reductions in these subcategories were not statistically significant. No seroconversions to HIV-1 or hepatitis B virus seropositivity occurred among those with needlestick injuries. The direct cost for each needlestick prevented was $789. CONCLUSIONS Despite an overall reduction in needlestick injury rates, no statistically significant reductions could be directly attributed to the protective devices. These devices are associated with a significant increase in cost compared with conventional devices. Further studies must be concurrently controlled to establish the effectiveness of these devices.
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Affiliation(s)
- R Orenstein
- Division of Hospital Epidemiology, Medical College of Virginia, Richmond, USA
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Abstract
A 15-month-old boy with mild developmental delay and several minor anomalies was found to be mosaic 46,XY/47,XY ,+mar(1). The marker r(1) was a small de novo ring identified by FISH with a painting type DNA probe.
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Affiliation(s)
- N Lanphear
- University Affiliated Cincinnati Center for Developmental Disorders, Children's Hospital Medical Center, OH 45229-2899, USA
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David KL, Puno C, Rubenstein C, Lytle C, Lamb A. Pathological case of the month. The use of fluorescence in situ hybridization technique to confirm an interchromosomal insertion. Arch Pediatr Adolesc Med 1994; 148:613-4. [PMID: 8193688 DOI: 10.1001/archpedi.1994.02170060067013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- K L David
- Genetics Unit and Cytogenetics Laboratory, Brooklyn Hospital Center, NY
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Renshaw G, Rigby P, Self G, Lamb A, Goldie R. Exogenously administered alpha-bungarotoxin binds to embryonic chick spinal cord: implications for the toxin-induced arrest of naturally occurring motoneuron death. Neuroscience 1993; 53:1163-72. [PMID: 8506023 DOI: 10.1016/0306-4522(93)90498-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [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: 01/31/2023]
Abstract
Administration of alpha-bungarotoxin and other curare-like drugs during embryogenesis arrests motoneuron death which normally occurs in the spinal cord from day 6 to day 10 of embryogenesis. The accepted explanation is that such motoneuron rescue is mediated by inhibition of neuromuscular transmission following the blockade of nicotinic cholinoceptors at the neuromuscular junction. In this study we investigated a further possibility, namely that motoneuron rescue might also involve the blockade of alpha-bungarotoxin-sensitive sites within the spinal cord. The kinetic profile of [125I]alpha-bungarotoxin binding was examined in the brachial and lumbar regions of chick spinal cord at embryonic day 15. Binding was specific and apparently saturable within the range 1-34 nM reaching a maximum after 45 min. Specific binding involved a single class of non-interacting sites with a KD of 8.0 nM and a Bmax of 106 +/- 12 fmol/mg of protein. Nicotine displaced specific [125I]alpha-bungarotoxin binding in a concentration-dependent manner. Furthermore, specific binding dissociated slowly in the absence of nicotine. Autoradiographs localizing [125I]alpha-bungarotoxin binding in embryonic spinal cord revealed that, at embryonic day 15, specific toxin binding sites could be detected throughout the gray matter. In contrast, at embryonic day 6, the ventral horn contained the majority of specific binding sites. Exogenously administered [125I]alpha-bungarotoxin reached and bound to nicotine-sensitive sites in the spinal cord at embryonic day 7. To conclude, these data demonstrate that central nicotine-sensitive sites which bind [125I]alpha-bungarotoxin in a saturable and specific manner were present at the beginning of the critical motoneuron death phase of neurogenesis and that they were accessible to exogenously administered toxin. It is proposed that the [125I]alpha-bungarotoxin binding characterized here is to a class of putative alpha-bungarotoxin-sensitive nicotinic cholinoceptors. These studies raise the possibility that alpha-bungarotoxin blockade of such putative nicotinic cholinoceptors within the spinal cord may contribute to toxin-induced arrest of naturally occurring motoneuron death.
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Affiliation(s)
- G Renshaw
- Department of Pathology, University of Western Australia, Perth, Nedlands
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Lamb A. The swab rack--an outdated ritual. Br J Theatre Nurs 1992; 2:14-7. [PMID: 1627836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The risk of Theatre Staff becoming infected from blood borne viruses such as HIV and Hepatitis B is steadily increasing. Sir David Cox's report (1988) predicted that the number of people infected with HIV by the end of 1987 would be between 20,000 and 50,000. Although these predictions are now thought to be more accurately estimated between 12,000 and 26,000, the number of people developing Aids is still expected to rise at an alarming rate. The precautions taken within the Theatre Department to reduce this risk are becoming transparently inadequate. It is no longer sufficient--or acceptable practice--to only be vigilant in avoiding blood contamination if the patient falls within a certain 'high risk' category. A happily married, middle aged woman may also be a virus carrier, particularly considering the long dormancy the HIV virus can exhibit before being detectable. It must be assumed that everyone is a potential carrier and the same precautionary measures taken for every patient, regardless of their past history, or present appearance.
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Abstract
The catalytic domain (30 kDa) of all protein kinases can be aligned for maximum homology, thereby revealing both invariant and highly conserved residues. The KIN1 locus from Saccharomyces cerevisiae was isolated by hybridization to a degenerate oligonucleotide encoding the conserved protein kinase domain, DVWSFG. The predicted amino acid sequence revealed significant homology to the catalytic domain of protein kinases. Using antibodies raised against a bacterial LacZ/KIN1 fusion protein, we have identified by immunoprecipitation the yeast KIN1 gene product as a 145,000 dalton protein (p145KIN1). In exponentially growing yeast cells, the KIN1 protein is phosphorylated primarily on serine residues. The gene product of KIN1 was shown to be a serine/threonine-specific protein kinase in immune complexes, as determined by the transfer of label from [gamma-32P]ATP to either pp145KIN1 or to an exogenously added substrate, alpha-casein. The optimal metal ion concentration in this assay was 20 mM-MnCl2. Subsequent phosphoamino acid analysis of the radiolabelled product, pp145KIN1, demonstrated that this autophosphorylation was specific for serine/threonine residues. There is no apparent difference between wild-type cells and cells containing a disrupted KIN1 gene. The biochemical characterization of protein kinases in simple eukaryotes such as yeast will aid us in determining the role of phosphorylation in cellular growth and physiology.
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Affiliation(s)
- A Lamb
- Department of Molecular Biology and Biochemistry, Wesleyan University, Middletown, Connecticut 06457
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Abstract
Those who attempt to characterize the functions of the cerebral hemispheres tend, broadly speaking, to do so either in terms of structural specializations or of different information-processing modes. Often little attention is paid to the possible importance, in determining the outcome of experiments in this field, of interhemispheric processes. An experiment is described which concurrently studies hemispheric response differences and interhemispheric processes. Sets of dot patterns are learned, each made up of an original and three distortions of the original. The degree of distortion is systematically changed and is quantified in terms of information theory. Subjects then examine pairs of patterns and decide whether they belong to the 'same' family, i.e. an original and one of its distortions, or 'different', i.e. a pattern previously learned and a completely new one. Manual response times are recorded for 'same' and 'different' responses and functions plotted of response latencies against degree of pattern distortion. The pairs of patterns are presented under three different conditions. Either both patterns in one visual field (unilateral condition), one pattern in each visual field (bilateral condition) or the patterns one above the other straddling the vertical meridian (central condition). Response latencies are shortest for the bilateral condition, next shortest for the unilateral condition and slowest for the central condition. Models which may account for these results are examined and one crucially involving changed information transmission rates with increasing distortion of patterns to be compared is found to provide the most parsimonious explanation of the results from all three experimental conditions.
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Affiliation(s)
- M A Jeeves
- Psychological Laboratory, University of St. Andrews, Fife, U.K
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Wyandt HE, Kasprzak R, Lamb A, Willson K, Wilson WG, Kelly TE. Human chromosome 2 rod/ring mosaicism: probable origin by prezygotic breakage and intrachromosomal exchange. Cytogenet Cell Genet 1982; 33:222-31. [PMID: 6957282 DOI: 10.1159/000131758] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A 5-year-old male with mild mental retardation showed a chromosomal rearrangement involving duplication of part of 2q (2q33.3 leads to 2wter) in 70% of metaphases from peripheral blood; the remaining 30% of cells had a rearrangement of chromosome 2 in the form of a ring, viz., r(2)(2p25.2 leads to 2q33.2). Both configurations appeared to be missing a tiny portion of 2p (p25.3 leads to pter). All metaphases examined from cultured skin fibroblasts from the child had the abnormal rod configuration of chromosome 2; none had the ring. The pattern of the 2q duplication/2p deletion in the rod is that expected if there were an inversion in a No. 2 in one of the parents. Q-, G-, and R-banding studies, however, revealed both parents to be chromosomally normal. Furthermore, the finding of an inversion would not explain the origin of the ring. The most probable explanation is that neither parent is mosaic for an inversion, but that the rod and ring configurations arose simultaneously from a de novo, prezygotic or early zygotic exchange in a No. 2, either between complementary DNA strands in G1 or by intrachromosomal exchange in S or G2. Differential selection against cells with the ring chromosome in blood and skin probably occurred during subsequent embryological development. Cytoplasmic malate dehydrogenase (MDH1) was excluded from the terminal band of 2p (i.e., 2p25.3) by deletion mapping.
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Lamb A. Retirement is looking forward. Nurs Focus 1979; 1:162-3. [PMID: 259950] [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: 12/14/2022]
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Whitfield CL, Thompson G, Lamb A, Spencer V, Pfeifer M, Browning-Ferrando M. Detoxification of 1,024 alcoholic patients without psychoactive drugs. JAMA 1978; 239:1409-10. [PMID: 633543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Most community-referred, ambulatory chronic alcoholics can be detoxified quickly and safety without the use of psychoactive drugs, according to our data. We believe such detoxification can be done most efficiently in a social setting, with the aid of a staff who will provide reassurance and reality orientation and who will monitor the patients' vital signs, general condition, and any specific problems.
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Lamb A, Tollefson EL. Catalytic reduction of nitric oxide in the presence of oxygen in low concentration high velocity gas streams. CAN J CHEM ENG 1975. [DOI: 10.1002/cjce.5450530111] [Citation(s) in RCA: 3] [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: 11/06/2022]
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