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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Kao J, Alexander L, Kao C, Eckardt P, Sangal A. Predictors of Long-Term Survival in Patients Treated for Oligometastases. Int J Radiat Oncol Biol Phys 2023; 117:e114. [PMID: 37784655 DOI: 10.1016/j.ijrobp.2023.06.896] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The purpose of this work is to report the long-term outcomes of patients with oligometastases treated with curative intent radiotherapy in the context of the recently developed ESTRO EORTC classification schema. MATERIALS/METHODS This retrospective, single institution study consists of consecutive adult patients with oligometastases from solid tumor malignancy referred to a single high volume radiation oncologist. Oligometastases were defined as 5 or fewer extracranial or intracranial metastatic lesions where all sites of active disease are amenable to treatment. Patients with a history of distant metastases requiring treatment of the primary tumor ± regional lymph nodes were included. Radical local therapies utilized included stereotactic radiotherapy (53% of patients, median dose 27 Gy in 3 fractions), intensity modulated radiotherapy (64% of patients; median dose 50 Gy in 15 fractions), surgery and/or ablation. Overall survival and progression-free survival were estimated using the Kaplan-Meier method. Predictors of survival were assessed using log-rank test for categorical variables and Cox regression for continuous variables for univariable analysis and Cox multivariable analyses. RESULTS The study population consists of 130 patients with 207 treated distant metastases referred to radiation oncology between 1/2014 and 12/2021. Key patient characteristics include median age 71, median pre-radiation albumin 3.7 g/dl, 72% ECOG 0-1 performance status, 35% lung primary, 12% prostate primary, median of 1 distant metastasis treated, 31% bone metastases, 30% brain metastases, 47% required treatment to primary tumor ± regional lymph nodes and 71% received systemic therapy after radiation. The most frequent ESTRO EORTC oligometastatic groups were synchronous oligometastases (40%) and metachronous oligorecurrence (29%). At a median follow-up of 28.8 months (IQR 16.0 to 56.3 months), the median overall survival is 37.9 months with a 4-year overall survival of 41.1%. The median progression-free survival was 12.3 months with a 4-year progression-free survival of 22.6%. On multivariable analysis, the strongest predictors of overall survival are age (HR 1.05 [1.02-1.08]; CI: 95%; p<0.001), ECOG performance status (HR 1.69 [1.15-2.47]; CI: 95%; p = 0.007), primary prostate, breast or kidney tumor (HR 2.79 [1.29-6.03]; CI: 95%; p = 0.009) and pre-radiation serum albumin (HR 0.55 [0.35-0.87]; CI: 95%; p = 0.01). The strongest predictors of progression free survival on multivariable analysis are albumin (HR 0.59 [0.39-0.88]; CI: 95%; p = 0.009) and primary prostate, breast or kidney tumor (HR 1.90 [1.06-3.38]; CI: 95%; p = 0.03). CONCLUSION Long-term overall survival is not uncommon after radical treatment for oligometastases. The ESTRO EORTC classification provides an enriched nomenclature for oligometastases but is not independently predictive of survival.
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Affiliation(s)
- J Kao
- Good Samaritan University Hospital, West Islip, NY
| | - L Alexander
- Good Samaritan University Hospital, West Islip, NY
| | - C Kao
- Good Samaritan University Hospital, West Islip, NY
| | - P Eckardt
- Good Samaritan University Hospital, West Islip, NY
| | - A Sangal
- Good Samaritan University Hospital, West Islip, NY
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Shim J, Pavlova AV, Moss RA, MacLean C, Brandie D, Mitchell L, Greig L, Parkinson E, Tzortziou Brown V, Morrissey D, Alexander L, Cooper K, Swinton PA. Patient ratings in exercise therapy for the management of tendinopathy: a systematic review with meta-analysis. Physiotherapy 2023; 120:78-94. [PMID: 37406460 DOI: 10.1016/j.physio.2023.05.002] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/26/2023] [Accepted: 05/26/2023] [Indexed: 07/07/2023]
Abstract
OBJECTIVE To synthesise exercise therapy intervention data investigating patient rating outcomes for the management of tendinopathy. DESIGN A systematic review and meta-analysis of randomized controlled trials investigating exercise therapy interventions and reporting patient rating outcomes. SETTING Any setting in any country listed as very high on the human development index. PARTICIPANTS People with a diagnosis of any tendinopathy of any severity or duration. INTERVENTIONS Exercise therapy for the management of tendinopathy comprising five different therapy classes: 1) resistance; 2) plyometric; 3) vibration; 4) flexibility, and 5) movement pattern retraining modalities, were considered for inclusion. MAIN OUTCOME MEASURES Outcomes measuring patient rating of condition, including patient satisfaction and Global Rating of Change (GROC). RESULTS From a total of 124 exercise therapy studies, 34 (Achilles: 41%, rotator cuff: 32%, patellar: 15%, elbow: 9% and gluteal: 3%) provided sufficient information to be meta-analysed. The data were obtained across 48 treatment arms and 1246 participants. The pooled estimate for proportion of satisfaction was 0.63 [95%CrI: 0.53-0.73], and the pooled estimate for percentage of maximum GROC was 53 [95%CrI: 38-69%]. The proportion of patients reporting positive satisfaction and perception of change increased with longer follow-up periods from treatment onset. CONCLUSION Patient satisfaction and GROC appear similar and are ranked moderately high demonstrating that patients generally perceive exercise therapies positively. Further research including greater consistency in measurement tools is required to explore and where possible, identify patient- and exercise-related moderating factors that can be used to improve person-centred care. SYSTEMATIC REVIEW REGISTRATION NUMBER PROSPERO ID=CRD42020168187 CONTRIBUTION OF PAPER.
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Affiliation(s)
- J Shim
- School of Health Sciences, Robert Gordon University, Aberdeen, UK.
| | - A V Pavlova
- School of Health Sciences, Robert Gordon University, Aberdeen, UK
| | - R A Moss
- School of Health Sciences, Robert Gordon University, Aberdeen, UK
| | - C MacLean
- Library Services, Robert Gordon University, Aberdeen, UK
| | - D Brandie
- Sportscotland Institute of Sport, Stirling, UK
| | | | - L Greig
- School of Health Sciences, Robert Gordon University, Aberdeen, UK
| | - E Parkinson
- School of Health Sciences, Robert Gordon University, Aberdeen, UK
| | - V Tzortziou Brown
- Wolfson Institute of Population Health, Queen Mary University of London, UK
| | - D Morrissey
- William Harvey Research Institute, School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - L Alexander
- School of Health Sciences, Robert Gordon University, Aberdeen, UK
| | - K Cooper
- School of Health Sciences, Robert Gordon University, Aberdeen, UK
| | - P A Swinton
- School of Health Sciences, Robert Gordon University, Aberdeen, UK
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Sasaninia K, Kelley M, Abnousian A, Badaoui A, Alexander L, Sheren N, Owens J, Rajurkar S, Razo-Botello B, Chorbajian A, Yoon S, Dhama S, Avitia E, Ochoa C, Yutani R, Venketaraman V. Topical Absorption of Glutathione-Cyclodextrin Nanoparticle Complex in Healthy Human Subjects Improves Immune Response against Mycobacterium avium Infection. Antioxidants (Basel) 2023; 12:1375. [PMID: 37507915 PMCID: PMC10376088 DOI: 10.3390/antiox12071375] [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: 04/30/2023] [Revised: 06/09/2023] [Accepted: 06/30/2023] [Indexed: 07/30/2023] Open
Abstract
Glutathione (GSH) is an important intracellular antioxidant responsible for neutralizing reactive oxygen species (ROS). Our laboratory previously demonstrated that the oral administration of liposomal GSH improves immune function against mycobacterium infections in healthy patients along with patients with HIV and Type 2 diabetes. We aim to determine if the topical application of a glutathione-cyclodextrin nanoparticle complex (GSH-CD) confers a therapeutic effect against mycobacterium infections. In our study, healthy participants received either topical GSH-CD (n = 15) or placebo (n = 15) treatment. Subjects were sprayed four times twice a day for three days topically on the abdomen. Blood draws were collected prior to application, and at 1, 4, and 72 h post-initial topical application. GSH, malondialdehyde (MDA), and cytokine levels were assessed in the processed blood samples of study participants. Additionally, whole blood cultures from study participants were challenged with Mycobacterium avium (M. avium) infection in vitro to assess mycobacterium survival post-treatment. Topical GSH-CD treatment was observed to elevate GSH levels in peripheral blood mononuclear cells (PBMCs) and red blood cells and decrease MDA levels in PBMCs 72 h post-treatment. An increase in plasma IL-2, IFN-γ, IL-12p70, and TNF-α was observed at 72 h post-topical GSH-CD treatment. Enhanced mycobacterium clearance was observed at 4 h and 72 h post-topical GSH-CD treatment. Overall, topical GSH-CD treatment was associated with improved immune function against M. avium infection. The findings of this pilot study suggest GSH-cyclodextrin complex formulation can be used topically as a safe alternative mode of GSH delivery in the peripheral blood.
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Affiliation(s)
- Kayvan Sasaninia
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Melissa Kelley
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Arbi Abnousian
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Ali Badaoui
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Logan Alexander
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Nisar Sheren
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - James Owens
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Shlok Rajurkar
- Division of Biological Sciences, University of California Berkeley, Berkeley, CA 94720, USA
| | - Brianna Razo-Botello
- College of Natural and Agricultural Science, University of California Riverside, Riverside, CA 92521, USA
| | - Abraham Chorbajian
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Sonyeol Yoon
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Sanya Dhama
- Keck Science Department, Pitzer College, Claremont, CA 91711, USA
| | - Edith Avitia
- WesternU Center for Clinical Research, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Cesar Ochoa
- WesternU Center for Clinical Research, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Ray Yutani
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Vishwanath Venketaraman
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
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Baby N, Alexander L, Bell J, Carson J. P236 Commit to Fit – access to gym space for young people with cystic fibrosis in partnership with Helping Hand charity. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00565-3] [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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Jones J, Alexander L, Hancock E, Cooper K. The development of a complex intervention to support exercise self-management for people with Parkinson's. Physiotherapy 2022. [DOI: 10.1016/j.physio.2021.12.180] [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: 11/30/2022]
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Edmondson RJ, O'Connell RL, Banerjee S, Mileshkin L, Sykes P, Beale P, Fisher A, Bonaventura A, Millan D, Nottley S, Benson C, Hamilton A, Sjoquist K, Alexander L, Kelly C, Carty K, Divers L, Bradshaw N, Friedlander M. Phase 2 study of anastrozole in rare cohorts of patients with estrogen receptor/progesterone receptor positive leiomyosarcomas and carcinosarcomas of the uterine corpus: The PARAGON trial (ANZGOG 0903). Gynecol Oncol 2021; 163:524-530. [PMID: 34625284 DOI: 10.1016/j.ygyno.2021.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Aromatase inhibitors have been used empirically to treat a subset of patients with hormone receptor positive uterine leiomyosarcomas(LMS) and carcinosarcomas (UCS) mainly supported by retrospective data. We evaluated the activity of anastrozole in two rare cohorts; patients with recurrent/metastatic LMS and UCS enrolled in PARAGON, a basket trial of anastrozole in estrogen receptor (ER+)/progesterone receptor positive (PR+) gynecological cancers. METHOD An investigator-initiated, single-arm, prospective open-label trial of anastrozole 1 mg/day in patients with ER &/or PR + ve LMS or UCS with measurable disease, treated until progression or unacceptable toxicity. Primary endpoint was clinical benefit (complete/partial response + stable disease) rate (CBR) at 3 months. Secondary endpoints include progression-free survival (PFS), quality of life and toxicity. RESULTS 39 eligible patients were enrolled, 32 with LMS and 7 with UCS. For the LMS cohort CBR at 3 months was 35% (95% CI: 21-53%) with a median duration of clinical benefit of 5.8 months. Best response was a partial response in one patient. Two patients remained on treatment for more than one year. The median progression-free survival was 2.8 months (95% CI: 2.6-4.9). For the UCS cohort CBR at 3 months was 43% (95% CI: 16-75%) with a median duration of clinical benefit of 5.6 months. Stable disease was seen in 3 patients but no objective responses were seen. The median progression-free survival was 2.7 months (95% CI, 1.1-8.2). Safety was acceptable with 5/39 evaluable patients showing grade 3 toxicities. CONCLUSION Whilst objective response rates with anastrozole are low, the clinical benefit rate and good tolerance suggests that aromatase inhibitor therapy may have a role in a subset of patients with metastatic LMS and UCS.
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Affiliation(s)
- R J Edmondson
- Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, St Mary's Hospital, Manchester, UK; Department of Obstetrics and Gynaecology, Manchester Academic Health Science Centre, St Mary's Hospital, Central Manchester NHS Foundation Trust, Manchester Academic Health Science Centre, Level 5, Research, Oxford Road, Manchester, UK.
| | - R L O'Connell
- NHMRC Clinical Trials Centre, University of Sydney, Sydney, NSW, Australia
| | - S Banerjee
- The Royal Marsden NHS Foundation Trust, London, UK
| | - L Mileshkin
- Peter MacCallum Cancer Centre and The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
| | - P Sykes
- Dept of Obstetrics and Gynaecology, University of Otago, New Zealand
| | - P Beale
- Chris O'Brien Lifehouse, Sydney, NSW, Australia
| | - A Fisher
- Queen Elizabeth Hospital, Gateshead, UK
| | - A Bonaventura
- School of Medicine & Public Health, University of Newcastle, Australia
| | - D Millan
- Queen Elizabeth University Hospital, Glasgow, UK
| | - S Nottley
- Royal Hospital for Women/Prince of Wales Hospital and Prince of Wales Clinical School, University of New South Wales, Sydney, Australia
| | - C Benson
- The Royal Marsden NHS Foundation Trust, London, UK
| | - A Hamilton
- Peter MacCallum Cancer Centre and The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
| | - K Sjoquist
- NHMRC Clinical Trials Centre, University of Sydney, Sydney, NSW, Australia
| | - L Alexander
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, UK
| | - C Kelly
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, UK
| | - K Carty
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, UK
| | - L Divers
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, UK
| | - N Bradshaw
- NHMRC Clinical Trials Centre, University of Sydney, Sydney, NSW, Australia
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Carson J, Alexander L, Bell J. 266: Physiotherapy during the COVID-19 pandemic: Support for the shielding patient by the shielding physiotherapist. J Cyst Fibros 2021. [PMCID: PMC8518462 DOI: 10.1016/s1569-1993(21)01691-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Harvey A, Brown MEL, Byrne MHV, Ashcroft J, Wan JCM, Alexander L, Schindler N, Brassett C. 729 “I Don’t Feel Like I’m Learning How to Be A Doctor:” The Impact of Disruptions Due to Covid-19 On Professional Identity Formation in UK Medical Students. Br J Surg 2021. [PMCID: PMC8524597 DOI: 10.1093/bjs/znab259.865] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction Professional identity formation (PIF) is a priority of medical training. Covid-19 caused disruption to medical education. We ask how this disruption impacted PIF through the lens of the activities performed – or not performed – by medical students during the first wave of the covid-19 pandemic, and perceptions of conflicts between activities. Method A pragmatic survey was distributed in spring 2020. Thematic analysis was performed of qualitative responses to two open questions. A social constructivist approach linked participants’ comments to PIF theory. Results We analysed 928 responses. Three themes surrounding students’ activities during covid-19 and their impact on identity were constructed: Conflict arose at the intersections between these themes. Students noted lack of clinical exposure was detrimental, implicitly recognising that aspects of PIF require the clinical environment. Participants were keen to volunteer but struggled with balancing academic work. Participants worried about risk to their households and the wider community and wanted their skills to add value in the clinical environment. Volunteers felt frustrated when they were unable to perform tasks aligning with their identity as a future doctor. An exception was participants who worked as interim FY1s, aligned with the role of an FY1. Conclusions Medical students feel a duty to help during crises. Conflict arises when different aspects of their identity demand different actions. Care must be taken to nurture PIF during periods of disruption.
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Affiliation(s)
- A Harvey
- GKT School of Medical Education, King's College London, London, United Kingdom
| | - M E L Brown
- Hull York Medical School, Health Professions Education Unit, Hull York, United Kingdom
| | - M H V Byrne
- University of Oxford, Department of Urology, Oxford University Hospitals Trust, Oxford, United Kingdom
| | - J Ashcroft
- University of Cambridge, Department of Surgery. Cambridge University Hospitals Trust, Cambridge, United Kingdom
| | - J C M Wan
- Guy’s and St Thomas’ Hospital, London, United Kingdom
| | - L Alexander
- Guy’s and St Thomas’ Hospital, London, United Kingdom
| | - N Schindler
- Norfolk and Norwich University Hospitals Foundation Trust, Paediatric Department, Norwich, United Kingdom
| | - C Brassett
- University of Cambridge, Department of Physiology, Development and Neuroscience, Cambridge, United Kingdom
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Byrne M, Ashcroft J, Alexander L, Wan J, Harvey A. 986 A Systematic Review of Medical Student Willingness to Volunteer and Preparedness for Pandemics and Disasters. Br J Surg 2021. [PMCID: PMC8135845 DOI: 10.1093/bjs/znab134.185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Introduction We aimed to identify motivators and barriers to volunteering during a disaster and knowledge and medical school curriculum of disaster and pandemic medicine. Method We systematically searched the literature on 28/6/2020, following PRISMA guidelines. Results A total of 37 studies met inclusion criteria including 11,168 medical students and 91 medical schools. 24 studies evaluated knowledge (64.9%), 16 evaluated volunteering (43.2%), and five evaluated medical school curricula (13.5%). Weighted mean willingness to volunteer during a disaster was 68.4% (SD = 21.7%, n = 2911), and there was a significant difference between those planning to volunteer and those who actually volunteered (P<.001). We identified a number of modifiable barriers which may contribute to this difference. Overall, knowledge of disasters was poor with a weighted mean of 48.9% (SD = 15.1%, n = 2985). Conclusions There is a large number of students who are willing to volunteer during pandemics. However, they are likely to be under-prepared for these roles due to poor overall knowledge and limited teaching. During the current COVID-19 pandemic and in future disasters, medical students may be required to volunteer as auxiliary staff. Medical schools need to develop infrastructure to facilitate this process as well as providing education and training to ensure students are adequately prepared for these roles.
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Affiliation(s)
- M Byrne
- University of Cambridge, Department of Surgery. Addenbrooke’s Hospital, Cambridge, United Kingdom
| | - J Ashcroft
- University of Cambridge, Department of Surgery. Addenbrooke’s Hospital, Cambridge, United Kingdom
| | - L Alexander
- University of Cambridge, School of Clinical Medicine, Cambridge, United Kingdom
| | - J Wan
- University of Cambridge, School of Clinical Medicine, Cambridge, United Kingdom
| | - A Harvey
- King's College London, London, United Kingdom
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Byrne M, Ashcroft J, Wan J, Alexander L, Harvey A, Schindler N, Brassett C. 967 COVID READY Study: Cross-Sectional Survey of Medical Students Volunteering During the Coronavirus Pandemic (COVID-19) In the United Kingdom. Br J Surg 2021. [PMCID: PMC8135849 DOI: 10.1093/bjs/znab135.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Introduction We aimed to identify the willingness, attitudes, and practice of medical students towards volunteering in a clinical capacity during the COVID-19 pandemic. Method We distributed a cross-sectional survey from 2/5/2020 to 14/6/2020 to all medical students at UK medical schools. Results A total of 1145 medical students from 36 medical schools completed the questionnaire. 82.7% of students were willing to volunteer, but only 34.3% had volunteered. The strongest predictors of willingness to volunteer on multiple linear regression were the beliefs that volunteering to work would benefit their medical education (estimate=0.35±0.03, adjusted P < 0.001) and that they would have a positive impact (estimate=0.33±0.03, adjusted P < 0.001). The majority of students were willing to take up a clinical role and were confident in having the necessary skills, but there was a discrepancy between the role’s students were comfortable performing and those they were assigned. Thematic analysis of the issue’s students would face when volunteering identified five themes: safety, professional practice, pressure to volunteer, finances and logistics, and education. Conclusions This study identifies areas for consideration from those responsible for workforce planning, healthcare provision, and student safety. We provide recommendations to facilitate a volunteering process that is safer for students, staff, and patients.
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Affiliation(s)
- M Byrne
- University of Cambridge, Department of Surgery, Addenbrooke's Hospital, Cambridge, United Kingdom
- University of Cambridge, Department of Physiology, Development and Neuroscience, Cambridge, United Kingdom
| | - J Ashcroft
- University of Cambridge, Department of Surgery, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - J Wan
- University of Cambridge, School of Clinical Medicine, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - L Alexander
- University of Cambridge, School of Clinical Medicine, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - A Harvey
- King’s College London GKT School of Medical Education, London, United Kingdom
| | - N Schindler
- Norfolk and Norwich University Hospital, Norwich, United Kingdom
- University of Cambridge, Institute of Continuing Education, Cambridge, United Kingdom
| | - C Brassett
- University of Cambridge, Department of Physiology, Development and Neuroscience, Cambridge, United Kingdom
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Friedlander M, Benson C, O'Connell RL, Reed N, Clamp A, Lord R, Millan D, Nottley S, Amant F, Steer C, Anand A, Mileshkin L, Beale P, Banerjee S, Bradshaw N, Kelly C, Carty K, Divers L, Alexander L, Edmondson R. Phase 2 study of anastrozole in patients with estrogen receptor/progesterone receptor positive recurrent low-grade endometrial stromal sarcomas: The PARAGON trial (ANZGOG 0903). Gynecol Oncol 2021; 161:160-165. [PMID: 33608144 DOI: 10.1016/j.ygyno.2021.02.016] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/08/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND Aromatase inhibitors are standard of care for low-grade endometrial stromal sarcomas (LGESS), based on very high response rates reported in retrospective studies. We evaluated the activity of anastrozole in recurrent/metastatic LGESS patients enrolled in PARAGON, a basket trial of anastrozole in estrogen receptor (ER±)/progesterone receptor (PR+) gynecological cancers. METHOD An investigator-initiated, single-arm, prospective open-label trial of anastrozole 1 mg/day in patients with ER ± PR + ve LGESS with measurable disease, treated until progressive disease or unacceptable toxicity. Primary endpoint was clinical benefit (complete/partial response + stable disease) rate (CBR) at 3 months. Secondary endpoints include progression-free survival (PFS), quality of life and toxicity. RESULTS 15 eligible patients were enrolled. CBR at 3 months was 73% (95% CI: 48-89.1%); unchanged at 6 months. Best response was 26.7%, including complete response in one (6.7%; 95% CI 1.2-29.8%), partial response in three (20%, 95% CI 7.1-45.2%) and stable disease in seven (46.7%). Four patients ceased treatment by 3 months due to progression. Median PFS was not reached (25th percentile: 2.9 months (95% CI: 1.2-NR)). PFS was 73.3%, 73.3% and 66% at 6, 12, and 18 months, respectively. Six patients remained on treatment for an average of 44.2 months (range 34.5-63.6) up until data cut. Toxicity was as expected, with 3 patients stopping due to adverse effects. CONCLUSION The 26.7% objective response rate with anastrozole is lower than reported in retrospective series, but the CBR was high and durable. The results underscore the importance of prospective trials in rare cancers.
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Affiliation(s)
- M Friedlander
- Royal Hospital for Women/Prince of Wales Hospital and Prince of Wales Clinical School, University of New South Wales, Sydney, Australia.
| | - C Benson
- The Royal Marsden NHS Foundation Trust, London, UK
| | - R L O'Connell
- NHMRC Clinical Trials Centre, University of Sydney, Sydney, NSW, Australia
| | - N Reed
- Beatson Oncology Centre, Gartnavel General Hospital, Glasgow, UK
| | - A Clamp
- The Christie NHS Foundation Trust and University of Manchester, Manchester, UK
| | - R Lord
- The Clatterbridge Cancer Centre, Liverpool and Wirral, UK
| | - D Millan
- Queen Elizabeth University Hospital, Glasgow, Scotland, UK
| | - S Nottley
- Queen Elizabeth University Hospital, Glasgow, Scotland, UK
| | - F Amant
- Division of Gynecologic Oncology, University Hospitals Gasthuisberg, Leuven, Belgium
| | - C Steer
- Border Medical Oncology, Albury-Wodonga Regional Cancer Centre, Albury, NSW, Australia
| | - A Anand
- Nottingham City Hospital, Nottingham, UK
| | - L Mileshkin
- Peter MacCallum Cancer Centre and The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - P Beale
- Chris O'Brien Lifehouse, Sydney, NSW, Australia
| | - S Banerjee
- The Royal Marsden NHS Foundation Trust, London, UK
| | - N Bradshaw
- NHMRC Clinical Trials Centre, University of Sydney, Sydney, NSW, Australia
| | - C Kelly
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, UK
| | - K Carty
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, UK
| | - L Divers
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, UK
| | - L Alexander
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, UK
| | - R Edmondson
- Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, St Mary''s Hospital, Manchester, UK; Department of Obstetrics and Gynaecology, Manchester Academic Health Science Centre, St Mary''s Hospital, Central Manchester NHS Foundation Trust; Manchester Academic Health Science Centre, Level 5, Research, Oxford Road, Manchester, UK; Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, St Mary''s Hospital, Manchester, UK; Department of Obstetrics and Gynaecology, Manchester Academic Health Science Centre, St Mary''s Hospital, Central Manchester NHS Foundation Trust; Manchester Academic Health Science Centre, Level 5, Research, Oxford Road, Manchester, UK
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Epperly M, Yu J, van Pijkeren J, Methe B, Li K, Fisher R, Lundy J, Zhang X, Shields D, Hou W, Leibowitz B, Wipf P, Alexander L, Huq M, Wang H, Greenberger J. Specific Taxa of the Intestinal Microbiome Mitigate the Radiation-Induced Gastrointestinal Syndrome. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2257] [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: 11/28/2022]
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Ferguson J, Alexander L, Kelly C, Chalmers A, Rahman N, Holme J, Grundy S, Ahmed L, Maskell N, Cowell G, Dick C, Tsim S, Hopkins T, Woodward R, Blyth K. Staging by Thoracoscopy in Potentially Radically Treatable Non-Small Cell Lung Cancer Associated with Minimal Pleural Effusion (STRATIFY) study: a prospective multicentre study. Lung Cancer 2020. [DOI: 10.1016/s0169-5002(20)30245-2] [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: 11/17/2022]
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SURACHMAN A, Bray B, Alexander L, Coe C, Almeida D. SUN-204 LATENT CLASSES OF CHRONIC KIDNEY DISEASE RISK FACTORS AMONG ADULTS IN THE MIDLIFE IN THE UNITED STATES (MIDUS) STUDY: SOCIOECONOMIC COVARIATES AND ASSOCIATION WITH GFR. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.607] [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: 10/26/2022] Open
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Alexander L, Carson J, McCaughan J, Moore J, Millar B. ePS3.08 Thinking inside the box - nebuliser care, safe storage and risk of infection. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30266-8] [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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Alexander L, Bechan N, Brady S, Douglas L, Moore S, Shelley R. Quality Improvement of Clinical Handover in a Liaison Psychiatry Department: A Three-Phase Audit. Ir Med J 2018; 111:767. [PMID: 30518203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Aims To audit and improve quality of clinical handover in a Liaison Psychiatry Department. Methods An 11-item Handover Checklist was used to carry out a baseline audit and immediate and delayed post-intervention re-audits. The intervention consisted of checklist posters, an electronic database and staff training. Results There was an immediate and sustained improvement in most areas, including baseline demographics and components of SBAR communication (Situation, Background, Assessment, Recommendation). The improvement between baseline and delayed re-audit was statistically significant (P=0.007). Conclusion Poor handover practices contribute to negative outcomes in healthcare but there remains a dearth of guidelines in most specialties.This audit is important as it describes an intervention which improved clinical handover at a time of significant clinical risk. This practice could be applied effectively to other services and is relevant to all specialties. Six to twelve-monthly re-audit and longitudinal assessment of clinical outcomes are recommended to maintain the practices implemented in this audit.
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Affiliation(s)
- L Alexander
- St Vincent’s University Hospital, Dublin
- University College Dublin
| | - N Bechan
- St Vincent’s University Hospital, Dublin
| | - S Brady
- St John of God of God Community Services
| | - L Douglas
- St Vincent’s University Hospital, Dublin
| | - S Moore
- St Vincent’s University Hospital, Dublin
| | - R Shelley
- St Vincent’s University Hospital, Dublin
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Ashton M, O'Rourke N, Macleod N, Laird B, Stobo J, Kelly C, Alexander L, Franks K, Moore K, Currie S, Valentine R, Chalmers AJ. SYSTEMS-2: A randomised phase II study of radiotherapy dose escalation for pain control in malignant pleural mesothelioma. Clin Transl Radiat Oncol 2018; 8:45-49. [PMID: 29594241 PMCID: PMC5862670 DOI: 10.1016/j.ctro.2017.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/14/2017] [Accepted: 11/16/2017] [Indexed: 12/11/2022] Open
Abstract
SYSTEMS-2 is a randomised study of radiotherapy dose escalation for pain control in 112 patients with malignant pleural mesothelioma (MPM). Standard palliative (20 Gy/5#) or dose escalated treatment (36 Gy/6#) will be delivered using advanced radiotherapy techniques and pain responses will be compared at week 5. Data will guide optimal palliative radiotherapy in MPM.
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Affiliation(s)
- M Ashton
- Institute of Cancer Sciences, University of Glasgow, UK
- Beatson West of Scotland Cancer Centre, Glasgow, UK
| | - N O'Rourke
- Beatson West of Scotland Cancer Centre, Glasgow, UK
| | - N Macleod
- Beatson West of Scotland Cancer Centre, Glasgow, UK
| | | | - J Stobo
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - C Kelly
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - L Alexander
- Cancer Research UK Clinical Trials Unit, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - K Franks
- St James' Institute of Oncology, Leeds, UK
| | - K Moore
- Beatson West of Scotland Cancer Centre, Glasgow, UK
| | - S Currie
- Beatson West of Scotland Cancer Centre, Glasgow, UK
| | - R Valentine
- Beatson West of Scotland Cancer Centre, Glasgow, UK
| | - A J Chalmers
- Institute of Cancer Sciences, University of Glasgow, UK
- Beatson West of Scotland Cancer Centre, Glasgow, UK
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Alexander L, Cooper K, Mitchell D. Effectiveness of vocational rehabilitation on work participation in adults with musculoskeletal disorders: an umbrella review. Physiotherapy 2017. [DOI: 10.1016/j.physio.2017.11.142] [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: 11/17/2022]
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Jones J, Alexander L. Perceived levels of physical activity amongst people with Parkinson's and the impact of age, gender, geographical location: a national survey. Physiotherapy 2017. [DOI: 10.1016/j.physio.2017.11.148] [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: 11/28/2022]
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Alexander L, Cooper K, Mitchell D, Williams H. Evaluation of a musculoskeletal physiotherapy service and associated cost benefits. Physiotherapy 2017. [DOI: 10.1016/j.physio.2017.11.173] [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]
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Martin MS, Kline HC, Wagner DR, Alexander L, Grandin T. 021 Evaluation of different captive bolt lengths and breed influence upon postmortem leg activity in fed cattle. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.021] [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: 11/13/2022] Open
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Wagner DR, Kline HC, Martin MS, Vogel K, Alexander L, Grandin T. 020 Cattle breed and head dimension effects on the performance of a captive bolt stunner equipped with three different length bolts. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.020] [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: 11/13/2022] Open
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Nicholson G, Alexander L, McCaffrey P, Farrell E. 78SOUTHERN TRUST EXPERIENCE OF ACUTE CARE AT HOME. Age Ageing 2017. [DOI: 10.1093/ageing/afx055.78] [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: 11/13/2022] Open
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van Rooijen C, Bosch G, Butré CI, van der Poel AFB, Wierenga PA, Alexander L, Hendriks WH. Urinary excretion of dietary Maillard reaction products in healthy adult female cats. J Anim Sci 2016; 94:185-95. [PMID: 26812325 DOI: 10.2527/jas.2015-9550] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
During processing of foods, the Maillard reaction occurs, resulting in the formation of advanced Maillard reaction products (MRP). Varying amounts of MRP have been found in commercially processed pet foods. Dietary MRP can be absorbed and contribute to the endogenous pool of MRP and possibly the etiology of age-related diseases. The aim of the present study was to determine urinary excretion of dietary MRP in cats fed commercial moist and dry foods. A pilot study with 10 cats, conducted to determine the adaptation time required for stable urinary excretion of MRP when changing to a diet with contrasting MRP content, showed an adaptation time of 1 d for all components. In the main study, 6 commercially processed dry and 6 moist diets were fed to 12 adult female cats in 2 parallel randomized, 36-d Latin square designs. The 24-h urine was collected quantitatively using modified litter boxes, and fructoselysine (FL), carboxymethyllysine (CML), and lysinoalanine (LAL) were analyzed using ultra high performance liquid chromatography (UHPLC) - mass spectrometer. Daily urinary excretion of FL and CML showed a positive relationship with daily intake in the dry ( = 0.03 and < 0.01, respectively) and moist ( < 0.01) foods. For LAL, no significant relationship was observed. Urinary recovery (% ingested) showed a negative relationship with daily intake for FL, CML, and LAL in the dry foods ( < 0.01, < 0.01, and = 0.08, respectively) and for CML and LAL in the moist foods ( < 0.01). The observed increase in urinary excretion with increasing dietary intake indicates that dietary MRP were absorbed from the gastrointestinal tract of cats and excreted in the urine. The adaptation time with change in diet indicates a likely effective excretion of MRP. Minimum apparent absorption of FL, CML, and LAL was found to range between 8% and 23%, 25% and 73%, and 6% and 19%, respectively. The observed decrease in urinary recovery suggests a limiting factor in digestion, absorption, metabolism, or urinary excretion. This study shows that dietary MRP in commercial diets are absorbed and excreted via the kidneys in cats.
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Sharp L, Cotton SC, Alexander L, Williams E, Gray NM, Reid JM. Reasons for participation and non-participation in a randomized controlled trial: postal questionnaire surveys of women eligible for TOMBOLA (Trial Of Management of Borderline and Other Low-grade Abnormal smears). Clin Trials 2016; 3:431-42. [PMID: 17060217 DOI: 10.1177/1740774506070812] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [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: 11/15/2022]
Abstract
Background Better understanding of motivators for, and barriers to, participation in randomized controlled trials (RCTs) in different study populations and settings has the potential to improve participation of historically under-represented groups (eg, women) in future trials. Purpose To investigate reasons why women agreed, or declined, to participate in a RCT. Methods In two postal questionnaire-based studies, we investigated women's reasons for participation or non-participation in TOMBOLA, a RCT comparing management policies for low-grade cervical abnormalities. Four-hundred and ninety-two TOMBOLA participants (response rate 56%) completed questionnaires on reasons for participation. One-hundred and thiry-seven women (38%) who declined TOMBOLA participation completed questionnaires on reasons for this. Results Eighty percent of women reported that one of their reasons for attending their TOMBOLA recruitment appointment was worries about their smear result. Ninety-four percent participated in the RCT because it was a worthwhile contribution to the cervical screening programme and other women; for 70% this was the most important reason. These proportions did not vary by socio-demographic factors. Thirty-two percent thought participation would result in better care. The most common reason for non-participation was preference for follow-up from the woman's GP. Logistical issues (eg, inconvenient appointments, travel time, arranging time off work or child-care) were commonly cited. Fourteen percent were too frightened to participate; this was unrelated to the grade of the recruitment smear. Limitations Response rates were not high, but there was little evidence of response bias. Structured questionnaires were used. Conclusions Future research should address how best to deliver information to ensure different social groups appreciate potential benefits of RCT participation and provide reassurance regarding fears about participation. Simple strategies (eg, appealing to the altruism of potential participants or offering flexible recruitment clinic locations and times) might enhance RCT recruitment rates. This in turn would ensure best use of research resources thus bringing the greatest benefits to participants and the population.
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Affiliation(s)
- L Sharp
- National Cancer Registry Ireland, Cork, Ireland.
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Abstract
Over 400,000 total knee replacement procedures (TKR) are performed annually in the United States. This paper focuses on the development of a battery-less wireless instrumented tibial tray for performance feedback in TKR implants. The proposed instrumented tibial tray is powered internally by an integrated piezoelectric energy harvesting system. Energy is harvested during the walking of the patient when forces are exerted on the tibial component. The sensors and wireless electronics are entirely powered from the harvested energy. This tibial tray is also instrumented with capacitive force sensors and an ultra low-power method to measure the capacitive force sensors. A bench top test rig is developed for testing the battery-less wireless knee replacement implant. For a person with a body weight of 55 kg, the energy harvesting system can fully charge the storage capacitors in 11 steps and can harvest an average of 1051 μJ per step. To power the force measurement system for ten seconds and to transmit the data, the piezoelectric energy harvesting system must be charged before the force measurement process is initiated by a minimum of 11 steps and a minimum of two steps must be taken during the force measurement process. During the force measurement process, each force sensor is sampled at a frequency of 10 Hz for ten seconds; thereafter, all of the data is transmitted to the RF base station. The resulting capacitive force sensors adequately represented cyclic loads; however, the sensors demonstrated some issues with repeatability.
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Affiliation(s)
| | | | - R. Rajamani
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455
| | - J. E. Bechtold
- Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN 55455
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Landau J, Sagy N, Young H, Alexander L, LaVerda N, Levine P, Patierno S. Breast cancer treatment delay in African American women in Washington, DC. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-4164] [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: 11/16/2022]
Abstract
Abstract
Abstract #4164
Background: Delays in follow-up after a positive breast cancer screen are thought to contribute to racial/ethnic disparities in breast cancer outcomes. The goal of this study was to determine the relative impact of self-identified race and other relevant socio-demographic and logistic variables on time to diagnosis after an abnormal mammogram, and time to first treatment after a cancer diagnosis within the context of data collection for a large research study of the effectiveness of patient navigation.
 Methods: Our sample includes 168 African-American and non-Hispanic white women with a documented invasive breast cancer diagnosis at an urban academic medical center during 2006 and 2007. The outcome variables were the number of days from abnormal mammogram to cancer diagnosis and from diagnosis to first treatment.
 Results: The median number of days to breast cancer diagnosis following an abnormal mammogram was 20.5 days for African-Americans compared to 15 days for non-Hispanic white women. Median days to first treatment after diagnosis was 21 days for African-American women compared to 16 days for non-Hispanic white women. Neither difference was statistically significant. In addition, 76% of African-American women had private insurance versus 81% of non-Hispanic white women.
 Conclusions: The identification of specific risk factors associated with a delay in diagnosis noted elsewhere in the literature and suggested in these preliminary findings could provide useful information regarding characteristics of women who are most likely to benefit from enhanced patient navigation efforts. Thus far, no statistically significant differences have been identified but the variety of factors that could contribute to the longer delay in disease management in African-American women compared to non-Hispanic white women, such as insurance status, provider location, household income, cultural issues, and other barriers to health care access, should be evaluated with a larger patient population.
Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 4164.
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Affiliation(s)
- J Landau
- 1 GW Cancer Institute, The George Washington University School of Medicine & Health Sciences, Washington, DC
| | - N Sagy
- 1 GW Cancer Institute, The George Washington University School of Medicine & Health Sciences, Washington, DC
| | - H Young
- 1 GW Cancer Institute, The George Washington University School of Medicine & Health Sciences, Washington, DC
| | - L Alexander
- 1 GW Cancer Institute, The George Washington University School of Medicine & Health Sciences, Washington, DC
| | - N LaVerda
- 1 GW Cancer Institute, The George Washington University School of Medicine & Health Sciences, Washington, DC
| | - P Levine
- 1 GW Cancer Institute, The George Washington University School of Medicine & Health Sciences, Washington, DC
| | - S Patierno
- 1 GW Cancer Institute, The George Washington University School of Medicine & Health Sciences, Washington, DC
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Larcombe SD, Tregaskes CA, Coffey JS, Stevenson AE, Alexander L, Arnold KE. The effects of short-term antioxidant supplementation on oxidative stress and flight performance in adult budgerigars Melopsittacus undulatus. ACTA ACUST UNITED AC 2008; 211:2859-64. [PMID: 18723545 DOI: 10.1242/jeb.017970] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [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]
Abstract
Antioxidants are known to play an important role in quenching reactive oxygen species (ROS), thus ameliorating oxidative stress. Since increased metabolism associated with exercise can increase oxidative stress, dietary antioxidants may be a limiting factor in determining aspects of physical performance. Here we tested whether oxidative stress associated with flight exercise of captive adult budgerigars, Melopsittacus undulatus differed after they received a diet containing either enhanced (EQ) or reduced levels (RQ) of a nutritional supplement (Nutrivit) rich in antioxidants for 4 weeks. We also assessed differences in take-off escape time, a potential fitness-determining physiological capability. Oxidative stress was measured in two ways: comet assay to measure DNA damage; and analysis of malondialdehyde (MDA), a by-product of lipid peroxidation. Flight exercise appeared to increase oxidative stress. Moreover, birds had a higher percentage of intact DNA (fewer alkali labile sites) in one comet measure and lower levels of MDA after an EQ diet than after an RQ diet. We found no difference in flight performance between the two diets. Our results suggested that birds exerted maximum effort in escape flights, regardless of diet. However, this was at a cost of increased oxidative stress post-flight when on a reduced quality diet, but not when on an enhanced, antioxidant-rich diet. We suggest that dietary antioxidants may prove important in reducing exercise-related costs through multiple physiological pathways. Further work is necessary to fully understand the effects of antioxidants and oxidative stress on exercise performance in the longer term.
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Affiliation(s)
- S D Larcombe
- Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, UK
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Bradley M, Alexander L, Sanchez-Martin RM. Cellular uptake of fluorescent labelled biotin-streptavidin microspheres. J Fluoresc 2008; 18:733-9. [PMID: 18330682 DOI: 10.1007/s10895-008-0334-1] [Citation(s) in RCA: 16] [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] [Received: 11/09/2007] [Accepted: 01/30/2008] [Indexed: 11/25/2022]
Abstract
Amino functionalized, cross-linked, polystyrene microspheres were covalently loaded with streptavidin to which was coupled fluorescently labeled biotin and biotinylated-tagged DNA. These biotin-streptavidin microsphere conjugates were then successfully delivered into cells. The application of the streptavidin-biotin technology to these microspheres allows the effective delivery of any biotinylated material into intact mammalian cells, without the need for delicate procedures such as micro-injection.
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Affiliation(s)
- M Bradley
- Chemical Biology Section, School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh, UK
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Baron M, Davies S, Alexander L, Snellgrove D, Sloman K. The effect of dietary pigments on the coloration and behaviour of flame-red dwarf gourami, Colisa lalia. Anim Behav 2008. [DOI: 10.1016/j.anbehav.2007.08.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Alexander L, Cotton SC, Gallager ME, Duncan I, Henderson S, Reid G, Robertson A. P-25 DOES THE PRESENCE OF KOILOCYTES IN A BNA SMEAR AFFECT CLINICAL OUTCOMES? Cytopathology 2006. [DOI: 10.1111/j.1365-2303.2006.00392_13_25.x] [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]
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Affiliation(s)
- M Pijoan
- Department of Surgery, Peter Bent Brigham Hospital, Boston
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Abstract
BACKGROUND Moderate physical activity is protective against coronary heart disease (CHD) and diabetes, both important public health problems among UK South Asian (Indian, Pakistani and Bangladeshi) ethnic groups. We assessed the evidence that physical activity is lower in South Asian groups than in the general population. METHODS We carried out a systematic literature review of studies describing levels of physical activity and fitness in UK South Asians using MEDLINE, EMBASE, the Cochrane databases, hand searching of relevant journals and review of reference lists. RESULTS We identified 12 studies in adults and five in children. Various methods were used to assess physical activity and fitness, but all the studies reported lower levels among South Asian groups. The differences were substantial, particularly among women and older people. For example, the Health Survey for England found that Indian, Pakistani and Bangladeshi men were 14, 30 and 45 per cent less likely than the general population to meet current guidelines for physical activity. Limited information was provided about translation and adaptation of questionnaires. CONCLUSION Levels of physical activity were lower in all South Asian groups than the general population and patterns of activity differed. No studies used validated measures. Insufficient attention has been paid to issues of cross-cultural equivalence. With these caveats, low levels of physical activity among UK South Asian ethnic groups may contribute to their increased risk of diabetes and CHD. Closer attention to validity, translation and adaptation is necessary to monitor changes and assess the effectiveness of interventions to increase physical activity.
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Affiliation(s)
- C M Fischbacher
- Public Health Sciences, University of Edinburgh, Edinburgh EH8 9AG.
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Abidov A, Hachamovitch R, Friedman JD, Hayes SW, Kang X, Cohen I, Germano G, Berman DS, Kjaer A, Cortsen A, Federspiel M, Hesse B, Holm S, O’Connor M, Dhalla AK, Wong MY, Wang WQ, Belardinelli L, Therapeutics CV, Epps A, Dave S, Brewer K, Chiaramida S, Gordon L, Hendrix GH, Feng B, Pretorius PH, Bruyant PP, Boening G, Beach RD, Gifford HC, King MA, Fessler JA, Hsu BL, Case JA, Gegen LL, Hertenstein GK, Cullom SJ, Bateman TM, Akincioglu C, Abidov A, Nishina H, Kavanagh P, Kang X, Aboul-Enein F, Yang L, Hayes S, Friedman J, Berman D, Germano G, Santana CA, Rivero A, Folks RD, Grossman GB, Cooke CD, Hunsche A, Faber TL, Halkar R, Garcia EV, Hansen CL, Silver S, Kaplan A, Rasalingam R, Awar M, Shirato S, Reist K, Htay T, Mehta D, Cho JH, Heo J, Dubovsky E, Calnon DA, Grewal KS, George PB, Richards DR, Hsi DH, Singh N, Meszaros Z, Thomas JL, Reyes E, Loong CY, Latus K, Anagnostopoulos C, Underwood SR, Kostacos EJ, Araujo LI, Kostacos EJ, Araujo LI, Lewin HC, Hyun MC, DePuey EG, Tanaka H, Chikamori T, Igarashi Y, Harafuji K, Usui Y, Yanagisawa H, Hida S, Yamashina A, Nasr HA, Mahmoud SA, Dalipaj MM, Golanowski LN, Kemp RAD, Chow BJ, Beanlands RS, Ruddy TD, Michelena HI, Mikolich BM, McNelis P, Decker WAV, Stathopoulos I, Duncan SA, Isasi C, Travin MI, Kritzman JN, Ficaro EP, Corbett JR, Allison JS, Weinsaft JW, Wong FJ, Szulc M, Okin PM, Kligfield P, Harafuji K, Chikamori T, Igarashi Y, Tanaka H, Usui Y, Yanagisawa H, Hida S, Ishimaru S, Yamashima A, Giedd KN, Bergmann SR, Shah S, Emmett L, Allman KC, Magee M, Van Gaal W, Kritharides L, Freedman B, Abidov A, Gerlach J, Akincioglu C, Friedman J, Kavanagh P, Miranda R, Germano G, Berman DS, Hayes SW, Damera N, Lone B, Singh R, Shah A, Yeturi S, Prasad Y, Blum S, Heller EN, Bhalodkar NC, Koutelou M, Kollaros N, Theodorakos A, Manginas A, Leontiadis E, Kouzoumi A, Cokkinos D, Mazzanti M, Marini M, Cianci G, Perna GP, Pai M, Greenberg MD, Liu F, Frankenberger O, Kokkinos P, Hanumara D, Goheen E, Wu C, Panagiotakos D, Fletcher R, Greenberg MD, Liu F, Frankenberger O, Kokkinos P, Hanumara D, Goheen E, Rodriguez OJ, Iyer VN, Lue M, Hickey KT, Blood DK, Bergmann SR, Bokhari S, Chareonthaitawee P, Christensen SD, Allen JL, Kemp BJ, Hodge DO, Ritman EL, Gibbons RJ, Smanio P, Riva G, Rodriquez F, Tricoti A, Nakhlawi A, Thom A, Pretorius PH, King MA, Dahlberg S, Leppo J, Slomka PJ, Nishina H, Berman DS, Akincioglu C, Abidov A, Friedman JD, Hayes SW, Germano G, Petrovici R, Husain M, Lee DS, Nanthakumar K, Iwanochko RM, Brunken RC, DiFilippo F, Neumann DR, Bybel B, Herrington B, Bruckbauer T, Howe C, Lohmann K, Hayden C, Chatterjee C, Lathrop B, Brunken RC, Chen MS, Lohmann KA, Howe WC, Bruckbauer T, Kaczur T, Bybel B, DiFilippo FP, Druz RS, Akinboboye OA, Grimson R, Nichols KJ, Reichek N, Ngai K, Dim R, Ho KT, Pary S, Ahmed SU, Ahlberg A, Cyr G, Vitols PJ, Mann A, Alexander L, Rosenblatt J, Mieres J, Heller GV, Ahmed SU, Ahlberg AW, Cyr G, Navare S, O’Sullivan D, Heller GV, Chiadika S, Lue M, Blood DK, Bergmann SR, Bokhari S, Heston TF, Heller GV, Cerqueira MD, Jones PG, Bryngelson JR, Moutray KL, Gegen LL, Hertenstein GK, Moser K, Case JA, Zellweger MJ, Burger PC, Pfisterer ME, Mueller-Brand J, Kang WJ, Lee BI, Lee DS, Paeng JC, Lee JS, Chung JK, Lee MC, To BN, O’Connell WJ, Botvinick EH, Duvall WL, Croft LB, Einstein AJ, Fisher JE, Haynes PS, Rose RK, Henzlova MJ, Prasad Y, Vashist A, Blum S, Sagar P, Heller EN, Kuwabara Y, Nakayama K, Tsuru Y, Nakaya J, Shindo S, Hasegawa M, Komuro I, Liu YH, Wackers F, Natale D, DePuey G, Taillefer R, Araujo L, Kostacos E, Allen S, Delbeke D, Anstett F, Kansal P, Calvin JE, Hendel RC, Gulati M, Pratap P, Takalkar A, Kostacos E, Alavi A, Araujo L, Melduni RM, Duncan SA, Travin MI, Isasi CR, Rivero A, Santana C, Esiashvili S, Grossman G, Halkar R, Folks RD, Garcia EV, Su H, Dobrucki LW, Chow C, Hu X, Bourke BN, Cavaliere P, Hua J, Sinusas AJ, Spinale FG, Sweterlitsch S, Azure M, Edwards DS, Sudhakar S, Chyun DA, Young LH, Inzucchi SE, Davey JA, Wackers FJ, Noble GL, Navare SM, Calvert J, Hussain SA, Ahlberg AM, Katten DM, Boden WE, Heller GV, Shaw LJ, Yang Y, Antunes A, Botelho MF, Gomes C, de Lima JJP, Silva ML, Moreira JN, Simões S, GonÇalves L, Providência LA, Elhendy A, Bax JJ, Schinkel AF, Valkema R, van Domburg RT, Poldermans D, Arrighi J, Lampert R, Burg M, Soufer R, Veress AI, Weiss JA, Huesman RH, Gullberg GT, Moser K, Case JA, Loong CY, Prvulovich EM, Reyes E, Aswegen AV, Anagnostopoulos C, Underwood SR, Htay T, Mehta D, Sun L, Lacy J, Heo J, Brunken RC, Kaczur T, Jaber W, Ramakrishna G, Miller TD, O’connor MK, Gibbons RJ, Bural GG, Mavi A, Kumar R, El-Haddad G, Srinivas SM, A Alavi, El-Haddad G, Alavi A, Araujo L, Thomas GS, Johnson CM, Miyamoto MI, Thomas JJ, Majmundar H, Ryals LA, Ip ZTK, Shaw LJ, Bishop HA, Carmody JP, Greathouse WG, Yanagisawa H, Chikamori T, Tanaka H, Usui Y, Igarashi U, Hida S, Morishima T, Tanaka N, Takazawa K, Yamashina A, Diedrichs H, Weber M, Koulousakis A, Voth E, Schwinger RHG, Mohan HK, Livieratos L, Gallagher S, Bailey DL, Chambers J, Fogelman I, Sobol I, Barst RJ, Nichols K, Widlitz A, Horn E, Bergmann SR, Chen J, Galt JR, Durbin MK, Ye J, Shao L, Garcia EV, Mahenthiran J, Elliott JC, Jacob S, Stricker S, Kalaria VG, Sawada S, Scott JA, Aziz K, Yasuda T, Gewirtz H, Hsu BL, Moutray K, Udelson JE, Barrett RJ, Johnson JR, Menenghetti C, Taillefer R, Ruddy T, Hachamovitch R, Jenkins SA, Massaro J, Haught H, Lim CS, Underwood R, Rosman J, Hanon S, Shapiro M, Schweitzer P, VanTosh A, Jones S, Harafuji K, Giedd KN, Johnson NP, Berliner JI, Sciacca RR, Chou RL, Hickey KT, Bokhari SS, Rodriguez O, Bokhari S, Moser KW, Moutray KL, Koutelou M, Theodorakos A, Kollaros N, Manginas A, Leontiadis E, Cokkinos D, Mazzanti M, Marini M, Cianci G, Perna GP, Nanasato M, Fujita H, Toba M, Nishimura T, Nikpour M, Urowitz M, Gladman D, Ibanez D, Harvey P, Floras J, Rouleau J, Iwanochko R, Pai M, Guglin ME, Ginsberg FL, Reinig M, Parrillo JE, Cha R, Merhige ME, Watson GM, Oliverio JG, Shelton V, Frank SN, Perna AF, Ferreira MJ, Ferrer-Antunes AI, Rodrigues V, Santos F, Lima J, Cerqueira MD, Magram MY, Lodge MA, Babich JW, Dilsizian V, Line BR, Bhalodkar NC, Lone B, Singh R, Prasad Y, Yeturi S, Blum S, Heller EN, Rodriguez OJ, Skerrett D, Charles C, Shuster MD, Itescu S, Wang TS, Bruyant PP, Pretorius PH, Dahlberg S, King MA, Petrovici R, Iwanochko RM, Lee DS, Emmett L, Husain M, Hosokawa R, Ohba M, Kambara N, Tadamura E, Kubo S, Nohara R, Kita T, Thompson RC, McGhie AI, O’Keefe JH, Christenson SD, Chareonthaitawee P, Kemp BJ, Jerome S, Russell TJ, Lowry DR, Coombs VJ, Moses A, Gottlieb SO, Heiba SI, Yee G, Coppola J, Elmquist T, Braff R, Youssef I, Ambrose JA, Abdel-Dayem HM, Canto J, Dubovsky E, Scott J, Terndrup TE, Faber TL, Folks RD, Dim UR, Mclaughlin J, Pollepalle D, Schapiro W, Wang Y, Akinboboye O, Ngai K, Druz RS, Polepalle D, Phippen-Nater B, Leonardis J, Druz R. Abstracts of original contributions ASNC 2004 9th annual scientific session September 3-–October 3, 2004 New York, New York. J Nucl Cardiol 2004. [DOI: 10.1007/bf02974964] [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: 11/29/2022]
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Robic A, Faraut T, Iannuccelli N, Lahbib-Mansais Y, Cantegrel V, Alexander L, Milan D. A new contribution to the integration of human and porcine genome maps: 623 new points of homology. Cytogenet Genome Res 2004; 102:100-8. [PMID: 14970687 DOI: 10.1159/000075733] [Citation(s) in RCA: 15] [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] [Received: 05/06/2003] [Accepted: 07/28/2003] [Indexed: 11/19/2022] Open
Abstract
In this study we examined homologies between 1,735 porcine microsatellites and human sequence. For 1,710 microsatellites we directly used the sequence flanking the repeat available in GenBank. For a set of 305 microsatellites, a BAC library was screened and end-sequencing provided 461 additional sequences. Altogether 2,171 porcine sequences were tentatively aligned with the sequence of the human genome using the fasta program. Human homologies were observed for 652 microsatellite loci and porcine chromosome assignments available for 623 microsatellites provide useful links in the human and pig comparative map. Moreover for 92 STS, a significant sequence similarity was detected using at least two sequences and in all cases corresponding human locations were consistent. The present study allowed the integration of anonymous markers and the porcine linkage map into the framework of the comparative data between human and porcine genomes (http://w3.toulouse.inra.fr/lgc/pig/msat/). Moreover all conserved syntenic segments were defined on human chromosomes.
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Affiliation(s)
- A Robic
- Institut National de la Recherche Agronomique, Laboratoire de Génétique Cellulaire, BP27, Castanet Tolosan, France.
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Abstract
OBJECTIVE To estimate and predict changes in the cat population of Australian households from 1979 to 2005. METHOD Telephone surveys were used to estimate Australia's total household cat population for each year from 1979 to 1999. A simple mathematical model based on population characteristics in 1995 was used to predict future population changes to 2005. Estimates and predictions for 1996 to 1999 were compared to validate the model. RESULTS Australia's household cat population increased steadily from 2.23 million in 1979 to peak at 3.24 million in 1988. Since then it has steadily declined to 2.60 million in 1999. The population size predicted from the mathematical model was similar to that from surveys for the years 1996 to 1999. It is predicted that the population will continue to decline to approximately 2.19 million in 2005. The proportion of Australian households owning cats fell from 31.1% in 1994 to 25.8% in 1999, while the average number of cats per cat-owning household remained relatively constant at 1.47. CONCLUSIONS Australia's household cat population is decreasing, falling by 19% between 1988, when it reached its peak, and 1999. This contrasts with the US where the population increased by 13.9% over the same period. The decline in Australia appears to be due to a decrease in the total number of cat-owning households rather than the number of cats per cat-owning household. It is likely that this trend will continue unless there is a change in household pet ownership preferences in the meantime.
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Affiliation(s)
- F C Baldock
- AusVet Animal Health Services, PO Box 3180, South Brisbane, Queensland 4101
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Tung JT, Fenton JI, Arnold C, Alexander L, Yuzbasiyan-Gurkan V, Venta PJ, Peters TL, Orth MW, Richardson DW, Caron JP. Recombinant equine interleukin-1beta induces putative mediators of articular cartilage degradation in equine chondrocytes. Can J Vet Res 2002; 66:19-25. [PMID: 11858644 PMCID: PMC226977] [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: 02/23/2023]
Abstract
Interleukin-1 is considered a central mediator of cartilage loss in osteoarthritis in several species, however an equine recombinant form of this cytokine is not readily available for in vitro use in equine osteoarthritis research. Equine recombinant interleukin-1beta was cloned and expressed and its effects on the expression and activity of selected chondrocytic proteins implicated in cartilage matrix degradation were characterized. Reverse transcriptase polymerase chain reaction methods were used to amplify the entire coding region of the equine IL-1beta mRNA, which was cloned into an expression vector, expressed in E. coli, and purified using a Ni2+ chromatographic method. The effects of the recombinant peptide on chondrocyte gene expression were determined by Northern blotting using RNA from equine chondrocyte cultures hybridized to probes for matrix metalloproteinases (MMP 1, MMP 3, MMP 13), tissue inhibitor of matrix metalloproteinases 1 (TIMP 1) and cyclooxygenase 2 (COX 2). Effects on selected mediators of cartilage degradation (nitrite concentrations and MMP activity) were determined using conditioned medium from reIL-1beta-treated equine cartilage explant cultures. A recombinant peptide of approximately 21 kd was obtained. Northern blotting analyses revealed a marked up-regulation of expression of all MMPs, TIMP 1, and COX 2 in mRNA from treated chondrocytes. Furthermore, cartilage explants exposed to reIL-1beta had augmented collagenase/gelatinase and stromelysin activities as well as increased concentration of nitrite in conditioned media. The development of a biologically active, species-specific IL-1beta provides a valuable tool in the study of osteoarthritis pathophysiology and its treatment in horses.
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Affiliation(s)
- J T Tung
- Department of Animal Science, Michigan State University, East Lansing 48824, USA
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Kaur A, Alexander L, Staprans SI, Denekamp L, Hale CL, McClure HM, Feinberg MB, Desrosiers RC, Johnson RP. Emergence of cytotoxic T lymphocyte escape mutations in nonpathogenic simian immunodeficiency virus infection. Eur J Immunol 2001; 31:3207-17. [PMID: 11745337 DOI: 10.1002/1521-4141(200111)31:11<3207::aid-immu3207>3.0.co;2-h] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [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: 11/09/2022]
Abstract
Although CTL escape has been well documented in pathogenic simian immunodeficiency virus (SIV) infection, there is no information on CTL escape in nonpathogenic SIV infection in nonhuman primate hosts like the sooty mangabeys. CTL responses and sequence variation in the SIV nef gene were evaluated in one sooty mangabey and one rhesus macaque inoculated together with the same stock of cloned SIVmac239. Each animal developed an immunodominant response to a distinct CTL epitope in Nef, aa 157-167 in the macaque and aa 20-28 in the mangabey. Nonsynonymous mutations in their respective epitopes were observed in both animals and resulted in loss of CTL recognition. These mutations were present in the majority of proviral DNA sequences at 16 weeks post infection in the macaque and >2 years post infection in the mangabey. These results document the occurrence of CTL escape in a host that does not develop AIDS, and adds to the growing body of evidence that CTL exert significant selective pressure in SIV infection.
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Affiliation(s)
- A Kaur
- Division of Immunology, New England Regional Primate Research Center, Harvard Medical School, Southborough, MA 01772, USA.
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Wang C, Hawken RJ, Larson E, Zhang X, Alexander L, Rutherford MS. Generation and mapping of expressed sequence tags from virus-infected swine macrophages. Anim Biotechnol 2001; 12:51-67. [PMID: 11370681 DOI: 10.1081/abio-100102978] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In an effort to identify genes that have a major effect on macrophage function during viral infection, we employed differential display reverse transcription (DDRT)-PCR to capture expressed sequence tags (ESTs) of swine alveolar macrophages infected by the porcine reproductive and respiratory syndrome virus (PRRSV). Sequence analyses showed that approximately 60% of these ESTs had significant similarity (> or =93%) to known pig ESTs or genes or matched sequences from other species with homology > or =80%. To determine chromosomal localization, PCR-based mapping was performed across either swine somatic cell hybrid or radiation hybrid panels. A total of 48 porcine viral response ESTs were mapped via the swine somatic cell panel or the INRA-Minnesota porcine Radiation Hybrid (IMpRH) panel (LOD > 6.0). Northern blot analyses confirmed PRRSV-induced altered transcript expression for several ESTs, including a 2'-5' oligoadenylate synthetase and a putative dual-specificity phosphatase. These virus-response ESTs represent good candidate genes for understanding PRRSV pathogenesis and for dissecting host genes which may have major effect on disease resistance.
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Affiliation(s)
- C Wang
- Department of Veterinary PathoBiology, College of Veterinary Medicine, University of Minnesota, St. Paul 55108, USA
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Alexander L, Knutson D, Kittilson JD, Sheridan MA. Localization of somatostatin mRNAs in the brain and pancreas of rainbow trout (Oncorhynchus mykiss). Comp Biochem Physiol B Biochem Mol Biol 2001; 129:221-8. [PMID: 11399453 DOI: 10.1016/s1096-4959(01)00313-x] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Rainbow trout possess three distinct mRNAs, each encoding a separate precursor: PPSS I, which contains a 14-amino acid sequence at its C-terminus (somatostatin-14) that is highly conserved among vertebrates, as well as two others, PPSS II' and PPSS II", both containing [Tyr(7), Gly(10)]-somatostatin-14 at their C-terminus. In this study, we used RNA template-specific PCR and in situ hybridization to determine the distribution and cellular localization of PPSS mRNAs in the brain and Brockmann body of rainbow trout. PPSS I, PPSS II' and PPSS II" were expressed in the Brockmann body and pituitary; the expression of PPSS mRNAs in the brain was region specific. PPSS I mRNA was expressed in the Brockmann body predominantly by cells other than those that expressed PPSS IIs; however, there were several instances where PPSS I and PPSS IIs were co-expressed within the same cell. Of the PPSS II-expressing cells, many were observed to express both PPSS II' and PPSS II" mRNA; however, some cells expressed only PPSS II' mRNA, while other cells expressed only PPSS II" mRNA. In the brain, PPSS I mRNA was expressed in the optic tectum (OT) and in many hypothalamic nuclei, including the nucleus rotundus (NR), nucleus anterioris hypothalami (NAH), nucleus anterior tuberis (NAT), nucleus lateral tuberis (NLT), as well as in the pituitary (adenohypophysis). PPSS II" mRNA was present in the same regions as PPSS I mRNA; however, PPSS II' mRNA was present primarily in OT, NAT, NLT and adenohypohysis. These results indicate that PPSS mRNAs are expressed differently by different cells, suggesting that cell-specific mechanisms are involved with the control of PPSS expression and that particular biological responses may be associated with a specific SS isoform.
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Affiliation(s)
- L Alexander
- Department of Zoology and Regulatory Biosciences Center, North Dakota State University, 58105-5517, Fargo, ND, USA
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Abstract
We analyzed virus sequences in two monkeys infected with SIVmac239 and two monkeys infected with SHIVnef that maintained high, persisting viral loads. Sequence changes were observed consistently at four loci in all four animals: a single nucleotide change in the Lys-tRNA primer binding site in the 5' long terminal repeat; two nucleotide changes that resulted in two amino acid changes in the pol gene product; and a single nucleotide change in the region of the simian immunodeficiency virus genome where the rev and env genes overlap, resulting in changes in the predicted amino acid sequences of both gene products. None of these mutations were seen in short-term cultures of CEMx174 cells infected with SIVmac239 or SHIVnef. At all four positions in all four animals, the new sequences represented consensus sequences for primate lentiviruses, whereas the inoculum sequences at these four loci have either never been or rarely been reported outside of SIVmac239. Thus, although cloned SIVmac239 is consistently pathogenic and consistently induces high viral load set points, it is clearly less than optimal at these four nucleotide positions.
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MESH Headings
- Amino Acid Sequence
- Animals
- Base Sequence
- Cell Line
- Consensus Sequence/genetics
- Evolution, Molecular
- Gene Products, env/chemistry
- Gene Products, env/genetics
- Gene Products, nef/physiology
- Gene Products, pol/chemistry
- Gene Products, pol/genetics
- Gene Products, rev/chemistry
- Gene Products, rev/genetics
- Gene Products, tat/chemistry
- Gene Products, tat/genetics
- HIV-1/genetics
- HIV-1/pathogenicity
- HIV-1/physiology
- Macaca mulatta/virology
- Molecular Sequence Data
- Mutation/genetics
- RNA, Transfer, Lys/genetics
- RNA, Viral/genetics
- RNA, Viral/metabolism
- Sequence Alignment
- Simian Immunodeficiency Virus/classification
- Simian Immunodeficiency Virus/genetics
- Simian Immunodeficiency Virus/pathogenicity
- Simian Immunodeficiency Virus/physiology
- Terminal Repeat Sequences/genetics
- Viral Load
- nef Gene Products, Human Immunodeficiency Virus
- rev Gene Products, Human Immunodeficiency Virus
- tat Gene Products, Human Immunodeficiency Virus
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Affiliation(s)
- L Alexander
- Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut 06520, USA
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Jakes RW, Alexander L, Duffy SW, Leong J, Chen LH, Lee WH. Dietary intake of soybean protein and menstrual cycle length in pre-menopausal Singapore Chinese women. Public Health Nutr 2001; 4:191-6. [PMID: 11299091 DOI: 10.1079/phn200063] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Intake of soybean protein was associated with a reduced risk of breast cancer in a case-control study. It has also been demonstrated to increase menstrual cycle length in an experimental setting. OBJECTIVE To ascertain whether the association of soybean protein intakes with menstrual cycle length persists in an uncontrolled community setting. DESIGN Cross-sectional food frequency dietary survey, menstrual cycle survey and prospective collection of menstrual cycle data. SETTING A hospital clinic and a nursing college. SUBJECTS Two hundred menstruating women. RESULTS An association (P = 0.034) of higher intakes of soybean protein with increased menstrual cycle length, as recorded by self report and by prospectively recording three consecutive cycles, was observed. The risk of menstrual cycle length being greater than the median, when comparing the upper quartile (8.7-35.2 g x day(-1)) of soybean intake and the lowest quartile (0.1-3.3 g x day(-1)) was double, and this approached statistical significance (OR = 2.02, 95% CI = 0.88-4.64 and OR = 1.93, 95% CI = 0.82-4.56 for self-reported cycle length and cycle length as recorded by diary, respectively). In terms of the absolute association with cycle length, subjects in the upper quartile of soybean intake demonstrated a cycle length 1-2 days longer than did subjects in the lowest quartile. CONCLUSIONS It is likely that the association between dietary intake of soybean protein and length of menstrual cycle prevails in the community setting. This is shown using both self-reported cycle length and cycle length as recorded in a prospective diary.
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Affiliation(s)
- R W Jakes
- NMRC Clinical Trials & Epidemiology Research Unit, Ministry of Health, 10 College Road, Singapore 169851, Singapore.
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Alexander L, John M, Cobb L, Noblitt R, Barowsky RT. U.S. clinical investigation of the Artisan myopia lens for the correction of high myopia in phakic eyes. Report of the results of phases 1 and 2, and interim phase 3. Optometry 2000; 71:630-42. [PMID: 11063268] [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: 02/18/2023]
Abstract
PURPOSE The purpose of this article is to present the results of the U.S. Clinical investigation of the Artisan anterior chamber iris fixed lens implant for the correction of myopia in phakic eyes. METHODS A prospective, multi-center, FDA-supervised trial was designed and undertaken in the United States by Ophtec USA, Inc., Boca Raton, Florida to determine the safety and efficacy of the Artisan lens as a potential refractive treatment for patients with high myopia. During the trial, two different models of the Artisan lens were used: one with a 5-mm optical zone (model 206) and the other with a 6-mm optical zone (model 204). RESULTS The data presented comprise 176 enrolled subjects and 264 implant procedures. The most frequently chosen Artisan lens power was -13.00 D (average, -12.76 D; SD, 3.24). The postoperative results at 6 months for all eyes (n = 135) showed 100% of patients were 20/40 or better best-corrected while 72% gained one or more lines and 22% gained two or more lines regardless of degree of astigmatism or postoperative goal. Through the course of the study, intraocular pressure maintained a level with a mean below 16 mmHg. In general, total reported complications in the patient cohort decreased over time, dropping from 39% at the initial visit to 10% at visit four and 0% at visit seven. CONCLUSIONS On the basis of the interim results of the U.S. Clinical Investigation of the Artisan Myopia Lens for the Correction of High Myopia in Phakic Eyes, the Artisan anterior chamber phakic IOL may offer an option for correction of high degrees of myopia. Refractive outcomes were exceptional and complications were minimal and amenable to treatment.
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Affiliation(s)
- L Alexander
- John-Kenyon Eye Center, Louisville, Kentucky 40207, USA
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