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Penvose KN, Reed SD, Sepulveda JMG, Mastylak A, Scott A, Hayes T, Shank J, Havrilesky LJ. Development and testing of patient-centered education about hormone replacement therapy for women at high genetic risk of breast and ovarian cancer. Gynecol Oncol 2024; 181:91-98. [PMID: 38150837 DOI: 10.1016/j.ygyno.2023.11.022] [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: 07/05/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 12/29/2023]
Abstract
OBJECTIVE In this study, we aimed to develop education to assist BRCA mutation carriers in making informed decisions about HRT in the context of risk-reducing surgery, while simultaneously clarifying their treatment-specific values and reducing decisional conflict. METHODS We enrolled premenopausal BRCA mutation carriers ages 19-49 without prior cancer or risk-reducing salpingo-oophorectomy to structured interviews in which they reviewed education about the risks and benefits of HRT. Materials included literature-derived data demonstrating associations between HRT and commonly considered health outcomes (breast cancer, vasomotor symptoms, sexual functioning, cardiovascular disease, osteoporosis, and blood clots). Participants completed the 16-item Decisional Conflict Scale (DCS) before and after education, communicated their preferences by rating and ranking the six outcomes, and provided feedback to inform iterative revisions of the educational content. RESULTS 25 participants completed interviews. DCS scores decreased significantly from 54.6 to 22.8 following education (p < 0.001); sub-scores for uncertainty (71.7 to 37.3), informed (71.7 to 15.3), values clarity (53.7 to 17.0), effective decision (44.2 to 25.5), and support (35.0 to 17.7) also decreased significantly. Participants ranked cardiovascular disease as the most important outcome to consider, followed by breast cancer, osteoporosis, blood clots, decline in sexual function, and hot flashes. Participants with prior mastectomy (N = 10) ranked breast cancer as the most important outcome 25% of the time, compared to 80% in participants without mastectomy (N = 15). CONCLUSION Following education, BRCA mutation carriers had significantly less decisional conflict regarding the choice to use HRT. This pilot study was successful in generating a prototype educational aid for further testing.
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Affiliation(s)
- Katherine N Penvose
- Duke University School of Medicine, Duke University Health System, Durham, NC, USA
| | - Shelby D Reed
- Preference Evaluation Research Group, Duke Clinical Research Institute, Duke University, Durham, NC, USA
| | | | - Alicja Mastylak
- Preference Evaluation Research Group, Duke Clinical Research Institute, Duke University, Durham, NC, USA
| | - Amelia Scott
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Duke Cancer Institute, Durham, NC, USA
| | - Taylor Hayes
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Duke Cancer Institute, Durham, NC, USA
| | | | - Laura J Havrilesky
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Duke Cancer Institute, Durham, NC, USA.
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Anastasio MK, Unnithan S, Scott A, Hayes T, Shah S, Moss HA, Erkanli A, Havrilesky LJ. Cryocompression to Reduce Peripheral Neuropathy in Gynecologic Cancer: A Randomized Controlled Trial. Obstet Gynecol 2023; 142:1459-1467. [PMID: 37883997 DOI: 10.1097/aog.0000000000005419] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 08/24/2023] [Indexed: 10/28/2023]
Abstract
OBJECTIVE To investigate the efficacy of cryocompression therapy to prevent chemotherapy-induced peripheral neuropathy. METHODS This single-institution, randomized, self-controlled trial of cryocompression enrolled gynecologic cancer patients planned for five to six cycles neurotoxic chemotherapy. Exclusion criteria were prior neurotoxic chemotherapy or baseline peripheral neuropathy. Participants were randomized to cryocompression on dominant versus non-dominant hand and foot (treatment), with no intervention on the opposite side (control). Compression socks and gloves and ice bags were applied 15 minutes before, during, and 15 minutes after infusion. Primary outcome measures included the PNQ (Patient Neurotoxicity Questionnaire) and the Semmes-Weinstein monofilament test; secondary outcomes included the FACT/GOG-NTX (Functional Assessment of Cancer Therapy/Gynecologic Oncology Group - Neurotoxicity) and patient acceptability and tolerability. Sixty patients completing the study were necessary to detect a 70% reduction in the odds of PNQ grade C or higher peripheral sensory neuropathy with 80% power. RESULTS Ninety-one patients were enrolled from January 2021 to October 2022; 69 were eligible for final analysis. Of the 91 patients, 64.8% were White, 30.8% were Black, and 1.1% were Hispanic or Latina. With successive cycles, more patients had sensory PNQ grade C or higher neuropathy on the control side compared with the cryocompression side. Cryocompression decreased the odds of sensory neuropathy (PNQ grade C or higher) by 46% at final visit (odds ratio 0.54, 95% CI 0.31-0.94; P =.03). There was no difference in tactile sensitivity based on the monofilament test between sides at the final visit. At the final visit, average FACT/GOG-NTX-11 (Functional Assessment of Cancer Therapy/Gynecologic Oncology Group - Neurotoxicity 11 Item Version) scores were significantly lower on the cryocompression than the control side (estimate -0.97, 95% CI -1.89 to -0.06; P =.04), as were FACT/GOG-NTX-4 (Functional Assessment of Cancer Therapy/Gynecologic Oncology Group - Neurotoxicity 4 Item Version) scores (estimate -0.35, 95% CI -0.64 to -0.05; P =.02). More than 85% of patients assessed the intervention as acceptable and tolerable. CONCLUSIONS Cryocompression therapy reduces subjective chemotherapy-induced peripheral sensory neuropathy in patients who are receiving paclitaxel or cisplatin for gynecologic cancer. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov , NCT04563130.
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Affiliation(s)
- Mary Katherine Anastasio
- Department of Obstetrics and Gynecology, the Department of Biostatistics and Bioinformatics, the Department of Neurology, and the Duke Cancer Institute, Duke University Medical Center, and the Division of Gynecologic Oncology, Duke Cancer Institute, Durham, North Carolina
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Watson CH, Spinosa D, Hayes T, Scott A, Jackson L, Thacker JK, Sherman KL, Moss HA, Havrilesky LJ, McNally JL. A Pilot Study of a Screening Program for Human Papillomavirus-Related Squamous Intraepithelial Lesion and Malignancy in Gynecologic Oncology Patients. J Low Genit Tract Dis 2023; 27:120-124. [PMID: 36745862 DOI: 10.1097/lgt.0000000000000723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Human papillomavirus (HPV)-related squamous intraepithelial lesion (SIL) or malignancy is associated with a significantly increased risk of second-site SIL or malignancy. The primary objective of this study was to determine the feasibility and acceptability of concurrent anal, cervical, and vulvovaginal screening in patients with a history of HPV-related gynecologic high-grade SIL or malignancy. The secondary objective was to assess subjects' knowledge regarding HPV screening and risks. METHODS Women with high-grade cervical, vulvar, or vaginal SIL or malignancy were enrolled during a 1-year pilot period. Subjects with cervical SIL or malignancy underwent vulvar examination and anoscopy. Subjects with vulvovaginal SIL or malignancy underwent Pap test if indicated and anoscopy. Appropriate referrals were made for abnormal findings. Feasibility was assessed by compliance using study acceptance rate, screening procedure adherence, and referral adherence. Acceptability was assessed using a Likert-scaled question after completion of screening procedures. RESULTS One hundred three women with a diagnosis of high-grade vulvovaginal or cervical SIL or carcinoma were approached regarding study enrollment; of these, 74 (71.8%) enrolled. The median score on the HPV knowledge assessment was 8.1 ± 1.6 (max score 10). Seventy-three (98.6%) of 74 patients rated the screening procedures as acceptable (score of 5/5). On examination, 14 (18.9%) subjects had abnormalities noted; 7 (9.5%) were referred for colorectal surgical evaluation, and 6/7 (85.7%) were compliant with their referral appointments. CONCLUSIONS Screening examinations for other HPV-related SILs and malignancies, including Pap tests, vulvovaginal inspection, and anoscopy, are acceptable to patients, with abnormal findings in almost 1 in 5 women.
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Affiliation(s)
- Catherine H Watson
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, TN
| | - Daniel Spinosa
- Department of Obstetrics and Gynecology, University of Colorado, Denver, CO
| | | | | | - Louise Jackson
- Division of Colorectal Surgery, Department of Surgery, Duke University, Durham, NC
| | - Julie K Thacker
- Division of Colorectal Surgery, Department of Surgery, Duke University, Durham, NC
| | - Karen L Sherman
- Division of Colorectal Surgery, Department of Surgery, Duke University, Durham, NC
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4
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Eichenberger EM, Dent A, Hayes T, Woc-Colburn L. A Horse of a Different Color: A Case Report of Streptococcus Equi Meningitis in a Kidney Transplant Recipient. Transplant Proc 2023; 55:664-666. [PMID: 36973146 DOI: 10.1016/j.transproceed.2023.02.061] [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] [Received: 02/08/2023] [Accepted: 02/25/2023] [Indexed: 03/29/2023]
Abstract
Streptococcus equi is an opportunistic pathogen in horses that has rarely been transmitted to humans. Here we present a zoonotic S. equi meningitis case in a kidney transplant recipient with exposure to infected horses. We discuss the patient's risk factors, clinical presentation, and management in the context of the limited literature on S. equi meningitis.
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Affiliation(s)
- Emily M Eichenberger
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia.
| | - Alexander Dent
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Taylor Hayes
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Laila Woc-Colburn
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
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Gwilym BL, Pallmann P, Waldron CA, Thomas-Jones E, Milosevic S, Brookes-Howell L, Harris D, Massey I, Burton J, Stewart P, Samuel K, Jones S, Cox D, Clothier A, Edwards A, Twine CP, Bosanquet DC, Benson R, Birmpili P, Blair R, Bosanquet DC, Dattani N, Dovell G, Forsythe R, Gwilym BL, Hitchman L, Machin M, Nandhra S, Onida S, Preece R, Saratzis A, Shalhoub J, Singh A, Forget P, Gannon M, Celnik A, Duguid M, Campbell A, Duncan K, Renwick B, Moore J, Maresch M, Kamal D, Kabis M, Hatem M, Juszczak M, Dattani N, Travers H, Shalan A, Elsabbagh M, Rocha-Neves J, Pereira-Neves A, Teixeira J, Lyons O, Lim E, Hamdulay K, Makar R, Zaki S, Francis CT, Azer A, Ghatwary-Tantawy T, Elsayed K, Mittapalli D, Melvin R, Barakat H, Taylor J, Veal S, Hamid HKS, Baili E, Kastrisios G, Maltezos C, Maltezos K, Anastasiadou C, Pachi A, Skotsimara A, Saratzis A, Vijaynagar B, Lau S, Velineni R, Bright E, Montague-Johnstone E, Stewart K, King W, Karkos C, Mitka M, Papadimitriou C, Smith G, Chan E, Shalhoub J, Machin M, Agbeko AE, Amoako J, Vijay A, Roditis K, Papaioannou V, Antoniou A, Tsiantoula P, Bessias N, Papas T, Dovell G, Goodchild F, Nandhra S, Rammell J, Dawkins C, Lapolla P, Sapienza P, Brachini G, Mingoli A, Hussey K, Meldrum A, Dearie L, Nair M, Duncan A, Webb B, Klimach S, Hardy T, Guest F, Hopkins L, Contractor U, Clothier A, McBride O, Hallatt M, Forsythe R, Pang D, Tan LE, Altaf N, Wong J, Thurston B, Ash O, Popplewell M, Grewal A, Jones S, Wardle B, Twine C, Ambler G, Condie N, Lam K, Heigberg-Gibbons F, Saha P, Hayes T, Patel S, Black S, Musajee M, Choudhry A, Hammond E, Costanza M, Shaw P, Feghali A, Chawla A, Surowiec S, Encalada RZ, Benson R, Cadwallader C, Clayton P, Van Herzeele I, Geenens M, Vermeir L, Moreels N, Geers S, Jawien A, Arentewicz T, Kontopodis N, Lioudaki S, Tavlas E, Nyktari V, Oberhuber A, Ibrahim A, Neu J, Nierhoff T, Moulakakis K, Kakkos S, Nikolakopoulos K, Papadoulas S, D'Oria M, Lepidi S, Lowry D, Ooi S, Patterson B, Williams S, Elrefaey GH, Gaba KA, Williams GF, Rodriguez DU, Khashram M, Gormley S, Hart O, Suthers E, French S. Short-term risk prediction after major lower limb amputation: PERCEIVE study. Br J Surg 2022; 109:1300-1311. [PMID: 36065602 DOI: 10.1093/bjs/znac309] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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] [Received: 01/27/2022] [Revised: 05/06/2022] [Accepted: 07/31/2022] [Indexed: 01/22/2023]
Abstract
BACKGROUND The accuracy with which healthcare professionals (HCPs) and risk prediction tools predict outcomes after major lower limb amputation (MLLA) is uncertain. The aim of this study was to evaluate the accuracy of predicting short-term (30 days after MLLA) mortality, morbidity, and revisional surgery. METHODS The PERCEIVE (PrEdiction of Risk and Communication of outcomE following major lower limb amputation: a collaboratIVE) study was launched on 1 October 2020. It was an international multicentre study, including adults undergoing MLLA for complications of peripheral arterial disease and/or diabetes. Preoperative predictions of 30-day mortality, morbidity, and MLLA revision by surgeons and anaesthetists were recorded. Probabilities from relevant risk prediction tools were calculated. Evaluation of accuracy included measures of discrimination, calibration, and overall performance. RESULTS Some 537 patients were included. HCPs had acceptable discrimination in predicting mortality (931 predictions; C-statistic 0.758) and MLLA revision (565 predictions; C-statistic 0.756), but were poor at predicting morbidity (980 predictions; C-statistic 0.616). They overpredicted the risk of all outcomes. All except three risk prediction tools had worse discrimination than HCPs for predicting mortality (C-statistics 0.789, 0.774, and 0.773); two of these significantly overestimated the risk compared with HCPs. SORT version 2 (the only tool incorporating HCP predictions) demonstrated better calibration and overall performance (Brier score 0.082) than HCPs. Tools predicting morbidity and MLLA revision had poor discrimination (C-statistics 0.520 and 0.679). CONCLUSION Clinicians predicted mortality and MLLA revision well, but predicted morbidity poorly. They overestimated the risk of mortality, morbidity, and MLLA revision. Most short-term risk prediction tools had poorer discrimination or calibration than HCPs. The best method of predicting mortality was a statistical tool that incorporated HCP estimation.
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Affiliation(s)
- Brenig L Gwilym
- South East Wales Vascular Network, Aneurin Bevan University Health Board, Royal Gwent Hospital, Newport, UK
| | | | | | | | | | | | - Debbie Harris
- Centre for Trials Research, Cardiff University, Cardiff, UK
| | - Ian Massey
- Artificial Limb and Appliance Centre, Rookwood Hospital, Cardiff and Vale University Health Board, Cardiff, UK
| | - Jo Burton
- Artificial Limb and Appliance Centre, Rookwood Hospital, Cardiff and Vale University Health Board, Cardiff, UK
| | - Phillippa Stewart
- Artificial Limb and Appliance Centre, Rookwood Hospital, Cardiff and Vale University Health Board, Cardiff, UK
| | - Katie Samuel
- Department of Anaesthesia, North Bristol NHS Trust, Bristol, UK
| | - Sian Jones
- c/o INVOLVE Health and Care Research Wales, Cardiff, UK
| | - David Cox
- c/o INVOLVE Health and Care Research Wales, Cardiff, UK
| | - Annie Clothier
- South East Wales Vascular Network, Aneurin Bevan University Health Board, Royal Gwent Hospital, Newport, UK
| | - Adrian Edwards
- Division of Population Medicine, Cardiff University, Cardiff, UK
| | - Christopher P Twine
- Bristol, Bath and Weston Vascular Network, North Bristol NHS Trust, Southmead Hospital, Bristol, UK
| | - David C Bosanquet
- South East Wales Vascular Network, Aneurin Bevan University Health Board, Royal Gwent Hospital, Newport, UK
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Wong J, Gonzalez R, Albright B, Hayes T, Swartz A, Havrilesky LJ, Lee PS, Previs RA. Telemedicine and gynecologic oncology: caring for patients remotely during a global pandemic. AJOG Global Reports 2022; 2:100124. [DOI: 10.1016/j.xagr.2022.100124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Watson C, Spinosa D, Lorenzo A, Hayes T, Thacker J, Jackson K, Sherman K, Moss H, Havrilesky L, McNally L. A pilot study of a collaborative screening program for HPV-related dysplasia and malignancy in gynecologic oncology patients (376). Gynecol Oncol 2022. [DOI: 10.1016/s0090-8258(22)01598-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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8
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Hayes T, Cunningham M, Trepanier A. Investigating factors that influence genetic counselors' decisions to refer patients to mental health providers. J Genet Couns 2022; 31:1113-1124. [PMID: 35460529 DOI: 10.1002/jgc4.1582] [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: 08/13/2021] [Revised: 04/06/2022] [Accepted: 04/11/2022] [Indexed: 11/09/2022]
Abstract
Genetic counselors (GC) serve patients who are often in distress at the time of their consultation. GC competency includes providing short-term, client-centered counseling, while using community resources, such as mental health providers (MHPs), for psychosocial support. The purpose of this study was to assess the mental health referral practices of GCs; specifically, the rate of referrals, factors influencing a GC's decision to refer, and barriers to referrals. GCs working in direct patient care for at least one year were recruited to take a novel 27 question survey created based on the results of a previous qualitative study. A link to the web-based survey was distributed through the National Society of Genetic Counselors Student Research Program and American Board of Genetic Counselors by email. A total of 144 individuals opened the survey for an estimated response rate of 3%. A majority of respondents (54.3%) reported they assess a patient's need for a mental health referral at least half of the time. The mean number of referrals made in the past 12 months was 5.13. After post-hoc analyses, there were no differences in referral rates between specialties. Common referral indications included patient history of mental illness, distress about having a genetic condition, and limited social support. Common barriers to referral were financial or insurance related, patient receptiveness, and the patient not perceiving a benefit. GCs felt that providing psychosocial support is within their scope of practice, but that MHPs are better equipped to manage long-term needs and those related to a mental health condition. This study provides insight into how GCs decide when they can manage patient distress, circumstances that prompt a referral to MHPs, and barriers. Recognizing common referral indications and barriers may lead to better strategies for connecting patients with such services.
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Affiliation(s)
- Taylor Hayes
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan, USA.,Henry Ford Health System, Detroit, Michigan, USA
| | - Mitchell Cunningham
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan, USA.,Mercy Clinic - Genetics, Mercy Hospital St. Louis, St. Louis, Missouri, USA
| | - Angela Trepanier
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan, USA
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Hayes T, Henderson J. Scene Inversion Interferes with Meaning-based Guidance in Real-world Scenes. J Vis 2021. [DOI: 10.1167/jov.21.9.2883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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10
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Gonzalez R, Wong J, Hayes T, Havrilesky L, Albright B, Watson C, Davidson B, Previs R. Telemedicine and gynecologic oncology: caring for patients remotely during a global pandemic. Gynecol Oncol 2021. [DOI: 10.1016/s0090-8258(21)00776-9] [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: 10/20/2022]
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11
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Charlesworth M, Hayes T, Erdoes G. Reversal Agents for the Management of Direct Oral Anticoagulant-Related Bleeding in Cardiac Surgical Patients: The Emperor's New Clothes? J Cardiothorac Vasc Anesth 2021; 35:2480-2482. [PMID: 33985882 DOI: 10.1053/j.jvca.2021.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 04/05/2021] [Indexed: 12/19/2022]
Affiliation(s)
- M Charlesworth
- Department of Cardiothoracic Anaesthesia, Critical Care and ECMO, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - T Hayes
- Department of Cardiothoracic Anaesthesia, Critical Care and ECMO, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - G Erdoes
- Adult and Paediatric Cardiovascular Anaesthesia, Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Paz-Ares L, Spigel D, Chen Y, Jove M, Juan-Vidal O, Rich P, Hayes T, Calderón VG, Caro R, Mendivil AN, Dowlati A, Zhang B, Moore Y, Wang T, Kokhreidze J, Ponce S, Bunn P. P48.14 RESILIENT Part 2: A phase 3 Study of Liposomal Irinotecan in Patients with Small-Cell Lung Cancer in the Second-Line Setting. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.884] [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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13
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Paz-Ares L, Spigel D, Chen Y, Jove M, Juan-Vidal O, Rich P, Hayes T, Gutiérrez Calderón V, Caro R, Navarro A, Dowlati A, Zhang B, Moore Y, Yao X, Kokhreidze J, Ponce S, Bunn P. FP10.04 RESILIENT Part 1: Safety and Efficacy of Second-Line Liposomal Irinotecan in Patients with Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.126] [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: 10/21/2022]
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14
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Spigel D, Paz-Ares L, Chen Y, Jove M, Juan-Vidal O, Rich P, Hayes T, Calderón V, Caro R, Navarro A, Dowlati A, Zhang B, Moore Y, Wang T, Nazarenko N, Kokhreidze J, Ponce S, Bunn P. MO01.39 Liposomal Irinotecan in Adults with Small Cell Lung Cancer who Progressed on Platinum-Based Therapy: Subgroup Analyses by Platinum Sensitivity. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2020.10.143] [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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15
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Kiat J, Hayes T, Henderson J, Luck S. Assessing the time course of saliency and meaning: Representational similarity analysis of ERP responses to natural scenes. J Vis 2020. [DOI: 10.1167/jov.20.11.1629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Abstract
The COVID‐19 pandemic has caused an unprecedented challenge for the provision of critical care. Anticipating an unsustainable burden on the health service, the UK Government introduced numerous legislative measures culminating in the Coronavirus Act, which interfere with existing legislation and rights. However, the existing standards and legal frameworks relevant to critical care clinicians are not extinguished, but anticipated to adapt to a new context. This new context influences the standard of care that can be reasonably provided and yields many human rights considerations, for example, in the use of restraints, or the restrictions placed on patients and visitors under the Infection Prevention and Control guidance. The changing landscape has also highlighted previously unrecognised legal dilemmas. The perceived difficulties in the provision of personal protective equipment for employees pose a legal risk for Trusts and a regulatory risk for clinicians. The spectre of rationing critical care poses a number of legal issues. Notably, the flux between clinical decisions based on best interests towards decisions explicitly based on resource considerations should be underpinned by an authoritative public policy decision to preserve legitimacy and lawfulness. Such a policy should be medically coherent, legally robust and ethically justified. The current crisis poses numerous challenges for clinicians aspiring to remain faithful to medicolegal and human rights principles developed over many decades, especially when such principles could easily be dismissed. However, it is exactly at such times that these principles are needed the most and clinicians play a disproportionate role in safeguarding them for the most vulnerable.
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Affiliation(s)
- N Coghlan
- Lincoln's Inn, London, UK.,European University Institute, Florence, Italy
| | - D Archard
- Queen's University Belfast, Belfast, UK
| | - P Sipanoun
- Centre for Outcomes and Experience Research in Children's Health, Illness and Disability, Great Ormond Street Hospital for Children NHS Foundation Trust and University College London Great Ormond Street Institute of Child Health, London, UK
| | - T Hayes
- Department of Vascular Surgery, Lister Hospital, Stevenage, UK
| | - B Baharlo
- General Intensive Care Unit, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
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Fedotov AV, Altinbas Z, Belomestnykh S, Ben-Zvi I, Blaskiewicz M, Brennan M, Bruno D, Brutus C, Costanzo M, Drees A, Fischer W, Fite J, Gaowei M, Gassner D, Gu X, Halinski J, Hamdi K, Hammons L, Harvey M, Hayes T, Hulsart R, Inacker P, Jamilkowski J, Jing Y, Kewisch J, Kankiya P, Kayran D, Lehn R, Liaw CJ, Litvinenko V, Liu C, Ma J, Mahler G, Mapes M, Marusic A, Mernick K, Mi C, Michnoff R, Miller T, Minty M, Narayan G, Nayak S, Nguyen L, Paniccia M, Pinayev I, Polizzo S, Ptitsyn V, Rao T, Robert-Demolaize G, Roser T, Sandberg J, Schoefer V, Schultheiss C, Seletskiy S, Severino F, Shrey T, Smart L, Smith K, Song H, Sukhanov A, Than R, Thieberger P, Trabocchi S, Tuozzolo J, Wanderer P, Wang E, Wang G, Weiss D, Xiao B, Xin T, Xu W, Zaltsman A, Zhao H, Zhao Z. Experimental Demonstration of Hadron Beam Cooling Using Radio-Frequency Accelerated Electron Bunches. Phys Rev Lett 2020; 124:084801. [PMID: 32167359 DOI: 10.1103/physrevlett.124.084801] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/24/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
Cooling of beams of gold ions using electron bunches accelerated with radio-frequency systems was recently experimentally demonstrated in the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. Such an approach is new and opens the possibility of using this technique at higher energies than possible with electrostatic acceleration of electron beams. The challenges of this approach include generation of electron beams suitable for cooling, delivery of electron bunches of the required quality to the cooling sections without degradation of beam angular divergence and energy spread, achieving the required small angles between electron and ion trajectories in the cooling sections, precise velocity matching between the two beams, high-current operation of the electron accelerator, as well as several physics effects related to bunched-beam cooling. Here we report on the first demonstration of cooling hadron beams using this new approach.
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Affiliation(s)
- A V Fedotov
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Z Altinbas
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Belomestnykh
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - I Ben-Zvi
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Blaskiewicz
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Brennan
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D Bruno
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Brutus
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Costanzo
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Drees
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Fischer
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Fite
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Gaowei
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D Gassner
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - X Gu
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Halinski
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Hamdi
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - L Hammons
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Harvey
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Hayes
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Hulsart
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Inacker
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Jamilkowski
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Y Jing
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Kewisch
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Kankiya
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D Kayran
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Lehn
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C J Liaw
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Litvinenko
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Liu
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Ma
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Mahler
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Mapes
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Marusic
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Mernick
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Mi
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Michnoff
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Miller
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Minty
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Narayan
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Nayak
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - L Nguyen
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Paniccia
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - I Pinayev
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Polizzo
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Ptitsyn
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Rao
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | | | - T Roser
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Sandberg
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Schoefer
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Schultheiss
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Seletskiy
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - F Severino
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Shrey
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - L Smart
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Smith
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Song
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Sukhanov
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Than
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Thieberger
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Trabocchi
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Tuozzolo
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Wanderer
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - E Wang
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Wang
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - D Weiss
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - B Xiao
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Xin
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Xu
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Zaltsman
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Zhao
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Z Zhao
- Brookhaven National Laboratory, Upton, New York 11973, USA
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Hayes T. P2.03-39 Systematic Evaluation of EGFR Variant Biology in Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1486] [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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Paz-Ares Rodríguez L, Spigel D, Chen Y, Jove M, Juan O, Rich P, Hayes T, Calderón VG, Bernabe R, Navarro A, Dowlati A, Zhang B, Moore Y, Wang T, Nazarenko N, Ponce S, Bunn P. OA03.03 Initial Efficacy and Safety Results of Irinotecan Liposome Injection (nal-IRI) in Patients with Small Cell Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Mullane KM, Morrison VA, Camacho LH, Arvin A, McNeil SA, Durrand J, Campbell B, Su SC, Chan ISF, Parrino J, Kaplan SS, Popmihajlov Z, Annunziato PW, Cerana S, Dictar MO, Bonvehi P, Tregnaghi JP, Fein L, Ashley D, Singh M, Hayes T, Playford G, Morrissey O, Thaler J, Kuehr T, Greil R, Pecherstorfer M, Duck L, Van Eygen K, Aoun M, De Prijck B, Franke FA, Barrios CHE, Mendes AVA, Serrano SV, Garcia RF, Moore F, Camargo JFC, Pires LA, Alves RS, Radinov A, Oreshkov K, Minchev V, Hubenova AI, Koynova T, Ivanov I, Rabotilova B, Minchev V, Petrov PA, Chilingirov P, Karanikolov S, Raynov J, Grimard D, McNeil S, Kumar D, Larratt LM, Weiss K, Delage R, Diaz-Mitoma FJ, Cano PO, Couture F, Carvajal P, Yepes A, Torres Ulloa R, Fardella P, Caglevic C, Rojas C, Orellana E, Gonzalez P, Acevedo A, Galvez KM, Gonzalez ME, Franco S, Restrepo JG, Rojas CA, Bonilla C, Florez LE, Ospina AV, Manneh R, Zorica R, Vrdoljak DV, Samarzija M, Petruzelka L, Vydra J, Mayer J, Cibula D, Prausova J, Paulson G, Ontaneda M, Palk K, Vahlberg A, Rooneem R, Galtier F, Postil D, Lucht F, Laine F, Launay O, Laurichesse H, Duval X, Cornely OA, Camerer B, Panse J, Zaiss M, Derigs HG, Menzel H, Verbeek M, Georgoulias V, Mavroudis D, Anagnostopoulos A, Terpos E, Cortes D, Umanzor J, Bejarano S, Galeano RW, Wong RSM, Hui P, Pedrazzoli P, Ruggeri L, Aversa F, Bosi A, Gentile G, Rambaldi A, Contu A, Marei L, Abbadi A, Hayajneh W, Kattan J, Farhat F, Chahine G, Rutkauskiene J, Marfil Rivera LJ, Lopez Chuken YA, Franco Villarreal H, Lopez Hernandez J, Blacklock H, Lopez RI, Alvarez R, Gomez AM, Quintana TS, Moreno Larrea MDC, Zorrilla SJ, Alarcon E, Samanez FCA, Caguioa PB, Tiangco BJ, Mora EM, Betancourt-Garcia RD, Hallman-Navarro D, Feliciano-Lopez LJ, Velez-Cortes HA, Cabanillas F, Ganea DE, Ciuleanu TE, Ghizdavescu DG, Miron L, Cebotaru CL, Cainap CI, Anghel R, Dvorkin MV, Gladkov OA, Fadeeva NV, Kuzmin AA, Lipatov ON, Zbarskaya II, Akhmetzyanov FS, Litvinov IV, Afanasyev BV, Cherenkova M, Lioznov D, Lisukov IA, Smirnova YA, Kolomietz S, Halawani H, Goh YT, Drgona L, Chudej J, Matejkova M, Reckova M, Rapoport BL, Szpak WM, Malan DR, Jonas N, Jung CW, Lee DG, Yoon SS, Lopez Jimenez J, Duran Martinez I, Rodriguez Moreno JF, Solano Vercet C, de la Camara R, Batlle Massana M, Yeh SP, Chen CY, Chou HH, Tsai CM, Chiu CH, Siritanaratkul N, Norasetthada L, Sriuranpong V, Seetalarom K, Akan H, Dane F, Ozcan MA, Ozsan GH, Kalayoglu Besisik SF, Cagatay A, Yalcin S, Peniket A, Mullan SR, Dakhil KM, Sivarajan K, Suh JJG, Sehgal A, Marquez F, Gomez EG, Mullane MR, Skinner WL, Behrens RJ, Trevarthe DR, Mazurczak MA, Lambiase EA, Vidal CA, Anac SY, Rodrigues GA, Baltz B, Boccia R, Wertheim MS, Holladay CS, Zenk D, Fusselman W, Wade III JL, Jaslowsk AJ, Keegan J, Robinson MO, Go RS, Farnen J, Amin B, Jurgens D, Risi GF, Beatty PG, Naqvi T, Parshad S, Hansen VL, Ahmed M, Steen PD, Badarinath S, Dekker A, Scouros MA, Young DE, Graydon Harker W, Kendall SD, Citron ML, Chedid S, Posada JG, Gupta MK, Rafiyath S, Buechler-Price J, Sreenivasappa S, Chay CH, Burke JM, Young SE, Mahmood A, Kugler JW, Gerstner G, Fuloria J, Belman ND, Geller R, Nieva J, Whittenberger BP, Wong BMY, Cescon TP, Abesada-Terk G, Guarino MJ, Zweibach A, Ibrahim EN, Takahashi G, Garrison MA, Mowat RB, Choi BS, Oliff IA, Singh J, Guter KA, Ayrons K, Rowland KM, Noga SJ, Rao SB, Columbie A, Nualart MT, Cecchi GR, Campos LT, Mohebtash M, Flores MR, Rothstein-Rubin R, O'Connor BM, Soori G, Knapp M, Miranda FG, Goodgame BW, Kassem M, Belani R, Sharma S, Ortiz T, Sonneborn HL, Markowitz AB, Wilbur D, Meiri E, Koo VS, Jhangiani HS, Wong L, Sanani S, Lawrence SJ, Jones CM, Murray C, Papageorgiou C, Gurtler JS, Ascensao JL, Seetalarom K, Venigalla ML, D'Andrea M, De Las Casas C, Haile DJ, Qazi FU, Santander JL, Thomas MR, Rao VP, Craig M, Garg RJ, Robles R, Lyons RM, Stegemoller RK, Goel S, Garg S, Lowry P, Lynch C, Lash B, Repka T, Baker J, Goueli BS, Campbell TC, Van Echo DA, Lee YJ, Reyes EA, Senecal FM, Donnelly G, Byeff P, Weiss R, Reid T, Roeland E, Goel A, Prow DM, Brandt DS, Kaplan HG, Payne JE, Boeckh MG, Rosen PJ, Mena RR, Khan R, Betts RF, Sharp SA, Morrison VA, Fitz-Patrick D, Congdon J, Erickson N, Abbasi R, Henderson S, Mehdi A, Wos EJ, Rehmus E, Beltzer L, Tamayo RA, Mahmood T, Reboli AC, Moore A, Brown JM, Cruz J, Quick DP, Potz JL, Kotz KW, Hutchins M, Chowhan NM, Devabhaktuni YD, Braly P, Berenguer RA, Shambaugh SC, O'Rourke TJ, Conkright WA, Winkler CF, Addo FEK, Duic JP, High KP, Kutner ME, Collins R, Carrizosa DR, Perry DJ, Kailath E, Rosen N, Sotolongo R, Shoham S, Chen T. Safety and efficacy of inactivated varicella zoster virus vaccine in immunocompromised patients with malignancies: a two-arm, randomised, double-blind, phase 3 trial. The Lancet Infectious Diseases 2019; 19:1001-1012. [DOI: 10.1016/s1473-3099(19)30310-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 12/25/2022]
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Hayes T, Henderson J. Scene meaning and salience are suppressed during arbitrary visual search. J Vis 2018. [DOI: 10.1167/18.10.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Taylor Hayes
- Center for Mind and Brain, University of California, Davis
| | - John Henderson
- Center for Mind and Brain, University of California, DavisDepartment of Psychology, University of California, Davis
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Abstract
Salvia apiana (white sage, Lamiaceae family) plant is native to southern California and parts of Mexico. Some Native American tribes local to this region consider S. apiana to be sacred and burn the leaves as incense for purification ceremonies. The plant has been used to treat sore throats, coughs, chest colds, upper respiratory infections and poison oak rashes. The aqueous ethanolic extract of S. apiana showed moderate CB1 activity (58.3% displacement). Chromatographic purification of the ethanolic extract on silica gel column led to isolation of nine compounds: rosmadial (I), carnosol (II), 16-hydroxycarnosol (III), sageone (IV), cirsimaritin (V), salvigenin (VI), oleanolic acid (VII), 3β,28-dihydroxy-urs-12-ene (VIII), and ursolic acid (IX). The structures of the isolated compounds were determined by their 1D, 2D NMR and MS spectral data. All the fractions and isolated compounds were tested for cannabinoid and opioid receptor binding.
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Affiliation(s)
| | - Taylor Hayes
- Departmant of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
| | - Samir A. Ross
- National Center for Natural Product Research, University of Mississippi, University, MS, USA
- Departmant of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
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Hayes T, Henderson J. The Relationship Between Salience and Meaning During Real-World Scene Viewing. J Vis 2017. [DOI: 10.1167/17.10.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Taylor Hayes
- Center for Mind and Brain, University of California, Davis
| | - John Henderson
- Center for Mind and Brain, University of California, DavisDepartment of Psychology, University of California, Davis
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Abstract
Stress fractures occur as a result of microscopic injuries sustained when bone is subjected to repeated submaximal stresses. Overtime, with repeated cycles of loading, accumulation of such injuries can lead to macro-structural failure and frank fracture. There are numerous stress fractures about the foot and ankle of which a trauma and orthopaedic surgeon should be aware. These include: metatarsal, tibia, calcaneus, navicular, fibula, talus, medial malleolus, sesamoid, cuneiform and cuboid. Awareness of these fractures is important as the diagnosis is frequently missed and appropriate treatment delayed. Late identification can be associated with protracted pain and disability, and may predispose to non-union and therefore necessitate operative intervention. This article outlines the epidemiology and risk factors, aetiology, presentation and management of the range of stress fractures in the foot and ankle.
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Affiliation(s)
- M J Welck
- Speciality Registrar Trauma & Orthopaedics, West Herts NHS Trust, United Kingdom.
| | - T Hayes
- Core Surgical Trainee, West Herts NHS Trust, United Kingdom
| | - P Pastides
- Speciality Registrar Trauma & Orthopaedics, West Herts NHS Trust, United Kingdom
| | - W Khan
- Speciality Registrar Trauma & Orthopaedics, Royal National Orthopaedic NHS Trust, United Kingdom
| | - B Rudge
- Consultant Trauma & Orthopaedics, West Herts NHS Trust, United Kingdom
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Xin T, Brutus JC, Belomestnykh SA, Ben-Zvi I, Boulware CH, Grimm TL, Hayes T, Litvinenko VN, Mernick K, Narayan G, Orfin P, Pinayev I, Rao T, Severino F, Skaritka J, Smith K, Than R, Tuozzolo J, Wang E, Xiao B, Xie H, Zaltsman A. Design of a high-bunch-charge 112-MHz superconducting RF photoemission electron source. Rev Sci Instrum 2016; 87:093303. [PMID: 27782552 DOI: 10.1063/1.4962682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
High-bunch-charge photoemission electron-sources operating in a continuous wave (CW) mode are required for many advanced applications of particle accelerators, such as electron coolers for hadron beams, electron-ion colliders, and free-electron lasers. Superconducting RF (SRF) has several advantages over other electron-gun technologies in CW mode as it offers higher acceleration rate and potentially can generate higher bunch charges and average beam currents. A 112 MHz SRF electron photoinjector (gun) was developed at Brookhaven National Laboratory to produce high-brightness and high-bunch-charge bunches for the coherent electron cooling proof-of-principle experiment. The gun utilizes a quarter-wave resonator geometry for assuring beam dynamics and uses high quantum efficiency multi-alkali photocathodes for generating electrons.
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Affiliation(s)
- T Xin
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - J C Brutus
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | | | - I Ben-Zvi
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | | | - T L Grimm
- Niowave, Inc., Lansing, Michigan 48906, USA
| | - T Hayes
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | | | - K Mernick
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - G Narayan
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - P Orfin
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - I Pinayev
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - T Rao
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - F Severino
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - J Skaritka
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - K Smith
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - R Than
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - J Tuozzolo
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - E Wang
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - B Xiao
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - H Xie
- Peking University, Beijing, China
| | - A Zaltsman
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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Hayes T, Henderson J. Eye movement patterns during scene viewing predict individual differences. J Vis 2016. [DOI: 10.1167/16.12.329] [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: 11/24/2022] Open
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Wiant D, Manning M, Liu H, Maurer J, Hayes T, Sintay B. SU-F-T-626: Intracranial SRS Re-Treatment Without Acquisition of New CT Images. Med Phys 2016. [DOI: 10.1118/1.4956811] [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: 11/07/2022] Open
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Sintay B, Pearman K, Maurer J, Liu H, Hayes T, Wiant D. SU-F-T-468: Efficient Scanning Data Analysis for TomoTherapy. Med Phys 2016. [DOI: 10.1118/1.4956653] [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: 11/07/2022] Open
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Wiant D, Maurer J, Liu H, Hayes T, Shang Q, Sintay B. MO-FG-CAMPUS-TeP1-03: Pre-Treatment Surface Imaging Based Collision Detection. Med Phys 2016. [DOI: 10.1118/1.4957345] [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: 11/07/2022] Open
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Chenier T, Diel de Amorim M, Foster RA, Hill A, Hayes T, Scholtz E, Gartley CJ. 161 COMPARISON OF DIFFERENT DIAGNOSTIC METHODS IN EQUINE ENDOMETRITIS. Reprod Fertil Dev 2015. [DOI: 10.1071/rdv27n1ab161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Prolonged endometritis is the most common cause of infertility in mares causing great economic impact. Many mares fail to be diagnosed with endometritis despite the availability of different diagnostic tests. Therefore, the purpose of this study was to compare endometrial swab, low-volume lavage (LVL) and endometrial biopsy as diagnostic methods for endometritis and to report the prevalence of this disease in a referral practice population. Fifty-one mares presenting for routine breeding or infertility work-up were examined by transrectal ultrasonography, before collecting samples for endometrial culture and cytology. Seven of the 51 mares had all the tests except endometrial biopsy. A mare was classified positive for endometritis if she demonstrated two or more of the following 5 criteria on a checklist (new gold standard; NGS): (1) abnormal clinical findings (any of uterine fluid on ultrasound, or excessive oedema for follicular size, or history of subfertility); (2) abnormal gross character of the LVL fluid: (cloudy, discolored, debris) before centrifugation; (3) positive endometrial cytology (≥1 neutrophil per high power field, or ≥1% (1 : 100) neutrophil to epithelial cell ratio on cytology); (4) bacterial growth on culture of the LVL pellet; and (5) histological evidence of inflammation (acute, chronic, and mixed) detected on endometrial biopsy. Data were analysed via kappa coefficient (k) and frequencies were calculated for sensitivity and positive predictive value (PPV) with biopsy being the gold standard and compared to the NGS. Endometritis was diagnosed in 35/44 (79.5%) mares by biopsy (5/35 had acute endometritis, 12/35 had chronic; 18/35 had a combination of acute and chronic endometritis). Based on the endometritis criteria (2/5 items on the checklist), 33/51 (64.7%) mares were diagnosed to have endometritis. All 11 of the barren mares were diagnosed by the checklist, while two of these 11 mares had no evidence of endometritis by biopsy, but had clinical signs or cloudy efflux. The character of the endometrial flush was 45% sensitive (k = 0.046), while culture was 22% sensitive, when compared to endometrial biopsy. When each criterion for endometritis was compared against the NGS, endometrial biopsy was the most sensitive diagnostic method (sensitivity = 86%). Abnormal clinical findings showed moderate agreement with the NGS (k = 0.4138), with a sensitivity of 62% and P = 0.0019. Positive endometrial cytology showed similar agreement (k = 0.3761), and sensitivity (sensitivity = 64%, and P = 0.0069). These studies have also shown the importance of using laboratory data in light of clinical findings, since they have shown that no test by itself is sensitive enough to diagnose a mare with subclinical endometritis, and that this disease might be under diagnosed. Since this study was performed in a referral hospital, there may have been a higher prevalence of endometritis than found in general clinical practice. An endometritis checklist could be used in cases where endometrial biopsies are not readily available.
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Hayes T, Yang J, Sims C, Rella J, Fung C. SU-E-T-125: Dosimetric Comparison of Intensity Modulated Radiation Therapy Using Robotic Versus Traditional Linac Platform in Prostate Cancer. Med Phys 2014. [DOI: 10.1118/1.4888455] [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: 11/07/2022] Open
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Pasricha SR, Atkinson SH, Armitage AE, Khandwala S, Veenemans J, Cox SE, Eddowes LA, Hayes T, Doherty CP, Demir AY, Tijhaar E, Verhoef H, Prentice AM, Drakesmith H. Expression of the Iron Hormone Hepcidin Distinguishes Different Types of Anemia in African Children. Sci Transl Med 2014; 6:235re3. [DOI: 10.1126/scitranslmed.3008249] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Schug T, Abagyan R, Blumberg B, Collins T, Crews D, DeFur P, Dickerson S, Edwards T, Gore A, Guillette L, Hayes T, Heindel J, Moores A, Patisaul H, Tal T, Thayer K, Vandenberg L, Warner J, Watson C, Saal FV, Zoeller R, O’Brien K, Myers J. Designing Endocrine Disruption Out of the Next Generation of Chemicals. Green Chem 2013; 15:181-198. [PMID: 25110461 PMCID: PMC4125359 DOI: 10.1039/c2gc35055f] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A central goal of green chemistry is to avoid hazard in the design of new chemicals. This objective is best achieved when information about a chemical's potential hazardous effects is obtained as early in the design process as feasible. Endocrine disruption is a type of hazard that to date has been inadequately addressed by both industrial and regulatory science. To aid chemists in avoiding this hazard, we propose an endocrine disruption testing protocol for use by chemists in the design of new chemicals. The Tiered Protocol for Endocrine Disruption (TiPED) has been created under the oversight of a scientific advisory committee composed of leading representatives from both green chemistry and the environmental health sciences. TiPED is conceived as a tool for new chemical design, thus it starts with a chemist theoretically at "the drawing board." It consists of five testing tiers ranging from broad in silico evaluation up through specific cell- and whole organism-based assays. To be effective at detecting endocrine disruption, a testing protocol must be able to measure potential hormone-like or hormone-inhibiting effects of chemicals, as well as the many possible interactions and signaling sequellae such chemicals may have with cell-based receptors. Accordingly, we have designed this protocol to broadly interrogate the endocrine system. The proposed protocol will not detect all possible mechanisms of endocrine disruption, because scientific understanding of these phenomena is advancing rapidly. To ensure that the protocol remains current, we have established a plan for incorporating new assays into the protocol as the science advances. In this paper we present the principles that should guide the science of testing new chemicals for endocrine disruption, as well as principles by which to evaluate individual assays for applicability, and laboratories for reliability. In a 'proof-of-principle' test, we ran 6 endocrine disrupting chemicals (EDCs) that act via different endocrinological mechanisms through the protocol using published literature. Each was identified as endocrine active by one or more tiers. We believe that this voluntary testing protocol will be a dynamic tool to facilitate efficient and early identification of potentially problematic chemicals, while ultimately reducing the risks to public health.
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Affiliation(s)
- T.T Schug
- Corresponding authors: T.T. Schug, . K.P. O’Brien, . J.P. Myers,
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - K.P. O’Brien
- Corresponding authors: T.T. Schug, . K.P. O’Brien, . J.P. Myers,
| | - J.P. Myers
- Corresponding authors: T.T. Schug, . K.P. O’Brien, . J.P. Myers,
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Adami A, Hayes T, Pavel M, Singer C. Detection and Classification of Movements in Bed using Load Cells. Conf Proc IEEE Eng Med Biol Soc 2012; 2006:589-92. [PMID: 17282250 DOI: 10.1109/iembs.2005.1616481] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The quality of our life is tied to the quality of our sleep. People with sleep deficits may experience impaired performance, irritability, lack of concentration, and daytime drowsiness. Increased mobility in bed can be a sign of disrupted sleep. Therefore, body movements in bed represent an important behavioral aspect of sleep. In this paper, we propose a method for detection and classification of movement that uses load cells placed at each corner of a bed. The detection of movements is based on short-term analysis of the mean-square differences of the load cell signals. Movement classification is based on features extracted from a wavelet-based tiresolution analysis (MRA) to classify the type of movement into two classes: small and large. A linear classifier is trained on each level of the MRA, and the decisions of the 4 classifiers are combined using a Bayesian combination rule. The method is evaluated on load cell data collected from 6 subjects. Each subject performed 5 trials composed of 20 pre-defined movements including small shifts of position to large movements of torso and limbs. The performance measure for the detection problem is the equal error rate (EER). We show that the detection method achieves a 2.9% EER and that the classification method has a classification error of 4%.
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Affiliation(s)
- A Adami
- Department of Biomedical Engineering, Oregon Health and Science University, Portland, OR, USA
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Hayes T, Sederberg P, Petrov A. A new technique for the analysis of sequential eye movements. J Vis 2011. [DOI: 10.1167/11.11.501] [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: 11/24/2022] Open
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Hayes T, Petrov A. Perceptual learning transfers from luminance- to contrast-defined motion. J Vis 2010. [DOI: 10.1167/9.8.884] [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: 11/24/2022] Open
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Buracchio T, Mattek N, Howieson D, Hayes T, Pavel M. 067 NON-AMNESTIC MCI AND INCIDENT FALLS. Parkinsonism Relat Disord 2010. [DOI: 10.1016/s1353-8020(10)70068-7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Stewart JR, Deen PP, Andersen KH, Schober H, Barthélémy JF, Hillier JM, Murani AP, Hayes T, Lindenau B. Disordered materials studied using neutron polarization analysis on the multi-detector spectrometer, D7. J Appl Crystallogr 2008. [DOI: 10.1107/s0021889808039162] [Citation(s) in RCA: 125] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The technique of longitudinal neutron polarization analysis on a multi-detector neutron spectrometer (so-called `xyz'-polarization analysis) is presented. This technique allows the simultaneous and unambiguous determination of the nuclear, magnetic and nuclear spin-incoherent scattering cross sections as a function of both momentum transfer and energy transfer. The implementation ofxyz-polarization analysis on the recently upgraded D7 spectrometer at the Institut Laue–Langevin in Grenoble is described. Several examples of neutron polarization analysis studies of disordered systems on D7 are given, illustrating the valuable information which can be retrieved from the analysis of neutron diffraction patterns between the Bragg peaks.
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Damasiewicz MJ, Chionh FJM, Hayes T. Severe palmar-plantar erythema in a patient with breast cancer receiving doxorubicin-cyclophosphamide chemotherapy. Intern Med J 2007; 37:505-6. [PMID: 17547732 DOI: 10.1111/j.1445-5994.2007.01380.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Niravath P, Hayes T, Hilsenbeck S. The utility of HCC screening among cirrhotics. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.15108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
15108 Background: Screening known cirrhotics for hepatocellular cancer (HCC) has long been a contentious topic. Studies to date have failed to conclusively prove or disprove the validity of AFP and hepatic ultrasound as screening mechanisms for HCC among cirrhotics, particularly in the American population. It is not clear whether these screening mechanisms provide any benefit in terms of reduced morbidity and mortality. Methods: The study examined all cirrhotics who developed HCC at the Houston Veterans Affairs Medical Center between 1999 and 2005. Those who were screened with AFP and/or imaging (either ultrasound, triphasic liver protocol CT, or MRI) were compared to those patients who were not screened at all. The screened and unscreened patients were compared in terms of Barcelona Clinic Liver Cancer Stage (BCLC) at the time of diagnosis. Results: Statistical analysis revealed a significant difference between the screened and unscreened groups in terms of BCLC stage at diagnosis, with the unscreened group being diagnosed at later stages than the screened group. Of the 155 patients observed, 26 were appropriately screened, and 129 were not. The BCLC stages at diagnosis for the two groups are shown in the table . The different trend in the two groups was found to be statistically significant with a p-value of 0.004. Furthermore, among the screened group, no particular method of screening (AFP vs. imaging vs. combination) was shown to be superior to another. Conclusions: Screening for HCC among cirrhotics using AFP and/or imaging every 6 months does correlate with HCC diagnosis at an earlier BCLC stage, thus portending better treatment options and improved prognosis. Therefore, screening all known cirrhotics for HCC may lead to decreased mortality. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
| | - T. Hayes
- Baylor College of Medicine, Houston, TX
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Srinivas S, Stadler WM, Bukowski R, Figlin R, Hayes T, Yankee EW, Jonasch E. Talactoferrin alfa may prolong progression-free survival in advanced renal carcinoma patients. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.4600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4600 Background: Talactoferrin alfa (formerly known as recombinant human lactoferrin, rhLF) is a novel immunomodulatory 80 kD protein with demonstrated oral anti-tumor properties in animal models, and promising early results in patients with advanced renal cell carcinoma (RCC) in Phase 1/2 trials. Methods: An open label Phase 2 study of Talactoferrin Oral Solution at 1.5 g talactoferrin alfa b.i.d. given up to a maximum of 4 cycles of 12 weeks on, 2 weeks off was conducted at 6 sites. Eligibility included predominantly clear cell histology, failure of at least one prior systemic therapy, tumor progression within the prior 9 months, a performance status of <2 (ECOG) and adequate organ function. The primary endpoints were the incidence of 14-week progression-free survival (PFS) and overall tumor response (by RECIST). The statistical plan specified an objective of 12.5% response rate or a progression-free survival rate of ≥40% at 14 weeks. Secondary endpoints included median PFS and median overall survival (OS). Results: Forty-four patients were enrolled. Eighteen patients (41%) were considered low risk and twenty-six (59%) considered intermediate risk based on the Memorial Sloan-Kettering Cancer Center (MSKCC) criteria. There were no talactoferrin-related Grade 3 or 4 adverse events or laboratory abnormalities. The most common related grade 1 or 2 adverse events were gastrointestinal symptoms. There was one unconfirmed tumor response and the 14-week PFS was 55%. The median PFS was 21 weeks (46 weeks and 9.4 weeks in the patients with low and intermediate risk prognostic factors, respectively). The median OS has not yet been reached. Conclusions: Talactoferrin alfa is well tolerated. The 14-week PFS met the pre-specified criteria for success (>40%). Due to the heterogeneity of tumor biology of RCC, any further evaluation of talactoferrin in this population should be in a larger randomized trial. [Table: see text]
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Affiliation(s)
- S. Srinivas
- Stanford Medical Center, Stanford, CA; University of Chicago, Chicago, IL; Cleveland Clinic, Cleveland, OH; David Geffen School of Medicine at UCLA, Los Angeles, CA; VA Medical Center, Houston, TX; Agennix, Houston, TX; University of Texas, Houston, TX
| | - W. M. Stadler
- Stanford Medical Center, Stanford, CA; University of Chicago, Chicago, IL; Cleveland Clinic, Cleveland, OH; David Geffen School of Medicine at UCLA, Los Angeles, CA; VA Medical Center, Houston, TX; Agennix, Houston, TX; University of Texas, Houston, TX
| | - R. Bukowski
- Stanford Medical Center, Stanford, CA; University of Chicago, Chicago, IL; Cleveland Clinic, Cleveland, OH; David Geffen School of Medicine at UCLA, Los Angeles, CA; VA Medical Center, Houston, TX; Agennix, Houston, TX; University of Texas, Houston, TX
| | - R. Figlin
- Stanford Medical Center, Stanford, CA; University of Chicago, Chicago, IL; Cleveland Clinic, Cleveland, OH; David Geffen School of Medicine at UCLA, Los Angeles, CA; VA Medical Center, Houston, TX; Agennix, Houston, TX; University of Texas, Houston, TX
| | - T. Hayes
- Stanford Medical Center, Stanford, CA; University of Chicago, Chicago, IL; Cleveland Clinic, Cleveland, OH; David Geffen School of Medicine at UCLA, Los Angeles, CA; VA Medical Center, Houston, TX; Agennix, Houston, TX; University of Texas, Houston, TX
| | - E. W. Yankee
- Stanford Medical Center, Stanford, CA; University of Chicago, Chicago, IL; Cleveland Clinic, Cleveland, OH; David Geffen School of Medicine at UCLA, Los Angeles, CA; VA Medical Center, Houston, TX; Agennix, Houston, TX; University of Texas, Houston, TX
| | - E. Jonasch
- Stanford Medical Center, Stanford, CA; University of Chicago, Chicago, IL; Cleveland Clinic, Cleveland, OH; David Geffen School of Medicine at UCLA, Los Angeles, CA; VA Medical Center, Houston, TX; Agennix, Houston, TX; University of Texas, Houston, TX
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Vinjamoori DV, Byrum JR, Hayes T, Das PK. Challenges and opportunities in the analysis of raffinose oligosaccharides, pentosans, phytate, and glucosinolates. J Anim Sci 2004; 82:319-28. [PMID: 14753376 DOI: 10.2527/2004.821319x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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: 11/13/2022] Open
Abstract
In this paper, the status of the analytical technologies for assaying animal antinutritional compounds, such as raffinose oligosaccharides, pentosans, phytic acid, and glucosinolates, is reviewed in terms of selectivity, sensitivity, and sample throughput. The implementation of simplified sample preparation schemes, use of novel separation approaches, and alternate detector technologies are discussed. The challenges and opportunities posed by these assays are highlighted along with the recommendations for best analytical practices.
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Affiliation(s)
- D V Vinjamoori
- Crop Analytics, Monsanto Company, St. Louis, MO 63167, USA.
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Ritter NM, Hayes T, Dougherty J. Analytical laboratory quality: Part II. Analytical method validation. J Biomol Tech 2001; 12:11-15. [PMID: 19499064 PMCID: PMC2291650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The most important objective to be met by an analytical testing facility is to have confidence in the data it generates. Most laboratories devote considerable energy to insure that test methods are appropriate, instruments are operational, and the training of analysts is adequate. Experienced scientists will design suitable internal controls in each analysis to confirm the success of a test. Good laboratory managers will monitor the status of facility operations to detect negative trends in the routine performance of instruments, methods, or analysts. Validation, a study designed to insure that a system is suitable for its intended use, is another mechanism that a facility can utilized to enhance confidence that the methods and instruments being used are capable of generating valid results. Additionally, using a validation protocol as a training tool can serve as an excellent manager/mentor mechanism for each type of technology employed in the laboratory. Finally, the generic validation of representative (surrogate) materials allows ongoing assessment of performance attributes independently from the wide variety specific sample types seen by core facilities.
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Affiliation(s)
- N M Ritter
- Quality and Compliance Group, Association of Biomolecular Resource Facilities, Rockville, MD, USA.
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Kaufman DB, Hayes T, Buettner J, Hammond DJ, Carbonell RG. Chromatographic resolution of tryptophan enantiomers with L-Leu-L-Leu-L-Leu peptide effects of mobile phase composition and chromatographic support. J Chromatogr A 2000; 874:21-6. [PMID: 10768496 DOI: 10.1016/s0021-9673(99)01299-6] [Citation(s) in RCA: 6] [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: 10/17/2022]
Abstract
Tryptophan enantiomers have been separated by zwitterion pair chromatography using L-leucine-L-leucine-L-leucine peptide as the zwitterion pairing agent. The peptide ligand is adsorbed onto an octadecylsilane support with excess ligand present in bulk solution. This article examines the roles of the hydrophobic matrix and the mobile phase components on tryptophan enantiomer binding and resolution. Capacity factors and enantioselectivites are given for both hydrophobic and hydrophilic matrices using mobile phases containing Leu-Leu-Leu peptide and/or salt. A decrease in selectivity upon the addition of mobile phase salt suggests that quadrupolar ion-pairing contributes to chiral recognition. Results indicate that binding is significantly reduced and separation is not achieved when Leu-Leu-Leu is coupled onto cross-linked or polymerized hydrophilic resins as well as onto macroporous polystyrene resin. However, resin-immobilized Leu-Leu-Asp-Leu-Leu-Leu, Leu-Leu-Glu-Leu-Leu-Leu, and Leu-Leu-Leu-Glu-Leu-Leu peptides, with ion-pairing sites designed to mimic the Leu-Leu-Leu-saturated C18 support, also do not resolve tryptophan enantiomers. This suggests the Leu-Leu-Leu structure is critical for enantiomer resolution. Because D- and L-tryptophan are separated in the absence of bulk Leu-Leu-Leu, chiral discrimination is believed to occur at the surface of the octadecylsilane support.
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Affiliation(s)
- D B Kaufman
- Department of Chemical Engineering, North Carolina State University, Raleigh 27695-7905, USA
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Farrell S, Hayes T, Shaw M. A negative SimpliRED D-dimer assay result does not exclude the diagnosis of deep vein thrombosis or pulmonary embolus in emergency department patients. Ann Emerg Med 2000; 35:121-5. [PMID: 10650228 DOI: 10.1016/s0196-0644(00)70130-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.5] [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: 11/16/2022]
Abstract
STUDY OBJECTIVE To determine whether a negative SimpliRED D-dimer assay result excludes the diagnosis of deep vein thrombosis (DVT) or pulmonary embolus (PE) in emergency department patients. METHODS This prospective, institutional review board-approved, clinical trial enrolled consecutive adult ED patients with the suspected diagnosis of venous thromboembolism (VTE) (DVT or PE). Initial ED evaluation included the SimpliRED D-dimer assay (American Diagnostica Inc, Greenwich, CT). Physicians were blinded to assay results. The diagnosis of DVT was made with positive findings on lower-extremity ultrasonography. PE was confirmed by a high-probability ventilation/perfusion (V/Q) scan, a positive pulmonary angiogram, or a positive finding on lower-extremity ultrasonography. A presumptive diagnosis of VTE was made in patients who had VTE at follow-up or unexplained death during the study period. RESULTS One hundred ninety-eight patients were enrolled during the study period. Twenty-five patients were excluded from data analysis; 9 had no diagnostic testing and 16 were lost to follow-up. Of the 173 patients analyzed, 57 (33%) had VTE-16 of 48 evaluated for DVT and 41 of 125 for suspected PE. The SimpliRED assay had a sensitivity of 65% and a negative predictive value of 81% for detection of VTE. In patients evaluated for DVT alone, the sensitivity was 56% and the negative predictive value was 77%. For patients with suspected PE, the sensitivity and negative predictive value were 68% and 83%, respectively. CONCLUSION In contrast to earlier reports on the SimpliRED D-dimer assay, a negative result failed to exclude the diagnosis of VTE in our ED population.
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Affiliation(s)
- S Farrell
- Departments of Emergency Medicine and Clinical Pathology, Maine Medical Center, Portland, ME 04102, USA.
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Ellard M, Hayes T, Sharp N. Patient acceptance of microwave endometrial ablation under local anesthesia. Int J Gynaecol Obstet 2000. [DOI: 10.1016/s0020-7292(00)80662-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ellard M, Hayes T, Sharp N. Microwave endometrial ablation in women with a fibroid uterus. Int J Gynaecol Obstet 2000. [DOI: 10.1016/s0020-7292(00)81889-5] [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]
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