1
|
Suciu A, Starybrat D, Gil-Morales C, Matson H, Jepson R, Williams M, Lyraki M, McMahon L, Nerhagen S, Veitch A, Llewellyn E. Clinical findings, treatment and outcome of trapped neutrophil syndrome in Border Collies: 12 cases (2011-2022). J Small Anim Pract 2024. [PMID: 38622907 DOI: 10.1111/jsap.13726] [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: 10/19/2023] [Revised: 01/24/2024] [Accepted: 03/02/2024] [Indexed: 04/17/2024]
Abstract
OBJECTIVES This study aimed to evaluate clinical signs, diagnostic findings, treatment administered and short- (survival to 28 days) and long-term prognosis (survival >6 months) in dogs diagnosed with trapped neutrophil syndrome. MATERIALS AND METHODS Medical records of 12 dogs (10 Border Collies and two Border Collie Crossbreeds) homozygous for VPS13B gene mutation causing trapped neutrophil syndrome from seven veterinary institutions between January 2011 and June 2022 were evaluated retrospectively. RESULTS The most common clinical signs at the time of diagnosis were pyrexia, abnormal gait and gastrointestinal signs. Concurrent metaphyseal osteopathy and immune-mediated polyarthritis were common. Seven dogs had a segmented neutrophil count below, four dogs within and one dog above the analyser reference interval at presentation. Two dogs had a septic source identified and both were additionally identified to be homozygous mutant positive on DNA testing by polymerase chain reaction (PCR) for canine cyclic neutropenia. All dogs received at least one antimicrobial agent and 10 dogs received treatment with prednisone or prednisolone (median starting dose 1 mg/kg/day; range 0.5 to 2.5 mg/kg/day). Nine dogs were alive at 28 days and six dogs were alive at 6 months post-diagnosis. CLINICAL SIGNIFICANCE Trapped neutrophil syndrome should be suspected in young Border Collies with pyrexia, lameness and gastrointestinal signs. Neutropenia may not always be present and long-term survival is possible. A septic focus was not commonly identified in our population; however, our results suggest that if identified, testing for concurrent canine cyclic neutropenia should be considered.
Collapse
Affiliation(s)
- A Suciu
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - D Starybrat
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| | - C Gil-Morales
- School of Veterinary Sciences, University of Bristol, Bristol, UK
| | - H Matson
- Department of Clinical Science and Services, Royal Veterinary College, Queen Mother Hospital for Animals, Hawkshead Lane, North Mymms, Herts, London, AL9 7TA, UK
| | - R Jepson
- Department of Clinical Science and Services, Royal Veterinary College, Queen Mother Hospital for Animals, Hawkshead Lane, North Mymms, Herts, London, AL9 7TA, UK
| | - M Williams
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO, USA
| | - M Lyraki
- School of Veterinary Sciences, University of Bristol, Bristol, UK
| | - L McMahon
- Anderson Moores Veterinary Specialists, The Granary, Bunstead Barns, Poles Lane, Hursley, Winchester, Hampshire, SO21 2LL, UK
| | - S Nerhagen
- Faculty of Veterinary Medicine, Department of Companion Animal Clinical Sciences, Norwegian University of Life Sciences, Ås, Norway
| | - A Veitch
- Dryfe Vets Ltd, 1 Mains Street, Lockerbie, DG11 2DG, UK
| | - E Llewellyn
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, EH25 9RG, UK
| |
Collapse
|
2
|
McMahon L, Gadepalli SK. Inflammatory bowel disease - evolving therapeutic approaches to a hidden epidemic. Semin Pediatr Surg 2024; 33:151407. [PMID: 38599148 DOI: 10.1016/j.sempedsurg.2024.151407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Affiliation(s)
- Lisa McMahon
- Department of Surgery, Phoenix Children's, 1919 E Thomas Rd, Phoenix, AZ 85016, United States
| | - Samir K Gadepalli
- University of Michigan, Section of Pediatric Surgery, 1540 East Hospital Dr, Ann Arbor, MI 48109, United States.
| |
Collapse
|
3
|
Abstract
Ulcerative colitis (UC) has a more severe presentation and rapid progression in pediatric patients, resulting in a greater need for surgical intervention compared to adults. Though medical management of UC has advanced with new biologic therapies, surgery continues to play an important role when disease progresses in the form of worsened or persistent symptoms, hemodynamic instability, or sepsis. The goals of surgical management are to restore intestinal continuity with a functional pouch when possible. While the literature has been growing regarding studies of pediatric patients with UC, high level of evidence studies are limited and most recommendations are based on adult studies. Similar to adults, pediatric patients who have ileal pouches created require surveillance for recurrent disease and cancer surveillance. Unique issues for pediatric patients include monitoring of growth and appropriate transition to adult care after adolescence. This review includes indications for surgical management, overview of staged surgical approaches, and the technical details of the three-stage approach.
Collapse
Affiliation(s)
- Brielle Ochoa
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, Arizona, USA
| | - Lisa McMahon
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, Arizona, USA.
| |
Collapse
|
4
|
Eldredge RS, Ochoa B, Carmichael J, Ostlie DJ, Lee J, McMahon L, Notrica DM, Padilla BE. Opioid Prescriptions at Discharge After Minimally Invasive Repair of Pectus Excavatum Are Reduced With Cryoablation. J Pediatr Surg 2024:S0022-3468(24)00183-0. [PMID: 38584007 DOI: 10.1016/j.jpedsurg.2024.03.031] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 03/04/2024] [Indexed: 04/09/2024]
Abstract
BACKGROUND The minimally invasive repair of pectus excavatum (MIRPE) is associated with significant postoperative pain and opioid use. The objective of this study was to determine the effect of intercostal nerve cryoablation (Cryo) on inpatient and post-hospital opioid prescription practices following MIPRE. METHODS A retrospective review at a single pediatric center was conducted of patients ≤21 years old who underwent MIRPE. Oral morphine equivalents (OME) of inpatient and discharge opioids were compared between Cryo and no-Cryo cohorts. RESULTS 579 patients were identified (82.8% male, mean age 15.4 ± 2.0 years). Cryo was performed in 73.5% of patients. The total inpatient OME use was less in the Cryo group (0.89 ± 0.68 vs. 1.6 ± 0.5 OME/kg/day; p < 0.001). Patients who underwent Cryo were prescribed significantly less OME at discharge compared to the no-Cryo group (3.9 ± 1.7 vs. 10.0 ± 4.1 OME mg/kg, p < 0.001). There was no statistically significant difference in the proportion of patients who required an opioid prescription refill (Cryo 12.4% vs. no-Cryo 11.5%, p = 0.884) or were readmitted (Cryo 5.3% vs. no-Cryo 4.6%, p = 0.833). CONCLUSION Patients who underwent cryoablation during MIRPE were prescribed significantly less opioid at the time of discharge without increasing the need for opioid refills or hospital readmissions. LEVEL OF EVIDENCE Treatment study; Level III evidence.
Collapse
Affiliation(s)
- R Scott Eldredge
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Surgery, Mayo Clinic School of Medicine and Science, Phoenix, AZ, USA
| | - Brielle Ochoa
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Jared Carmichael
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Daniel J Ostlie
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Surgery, Mayo Clinic School of Medicine and Science, Phoenix, AZ, USA; Department of Child Health and Development, University of Arizona, School of Medicine, Phoenix, AZ, USA
| | - Justin Lee
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Child Health and Development, University of Arizona, School of Medicine, Phoenix, AZ, USA
| | - Lisa McMahon
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Surgery, Mayo Clinic School of Medicine and Science, Phoenix, AZ, USA; Department of Child Health and Development, University of Arizona, School of Medicine, Phoenix, AZ, USA
| | - David M Notrica
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Surgery, Mayo Clinic School of Medicine and Science, Phoenix, AZ, USA; Department of Child Health and Development, University of Arizona, School of Medicine, Phoenix, AZ, USA
| | - Benjamin E Padilla
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Child Health and Development, University of Arizona, School of Medicine, Phoenix, AZ, USA.
| |
Collapse
|
5
|
Eldredge RS, Ochoa B, Khoury E, Mihalcin K, Ostlie D, Lee J, McMahon L, Notrica D, Padilla BE. Long-Term Sensory Function 3 years after Minimally Invasive Repair of Pectus Excavatum with Cryoablation. J Pediatr Surg 2024; 59:379-384. [PMID: 37973420 DOI: 10.1016/j.jpedsurg.2023.10.058] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/19/2023]
Abstract
INTRODUCTION Minimally invasive repair of pectus excavatum (MIRPE) with intercostal nerve cryoablation (Cryo) decreases length of hospitalization and opioid use, but long-term recovery of sensation has been poorly described. The purpose of this study was to quantify long-term hypoesthesia and neuropathic pain after MIRPE with Cryo. METHODS A prospective cohort study was conducted single-institution of patients ≤21 years who presented for bar removal. Consented patients underwent chest wall sensory testing and completed neuropathic pain screening. Chest wall hypoesthesia to cold, soft touch, and pinprick were measured as the percent of the treated anterior chest wall surface area (TACWSA); neuropathic pain was evaluated by questionnaire. RESULTS The study enrolled 47 patients; 87% male; median age 18.4 years. The median bar dwell time was 2.9 years. A median of 2 bars were placed; 80.9% were secured with pericostal sutures. At enrollment, 46.8% of patients had identifiable chest wall hypoesthesia. The mean percentage of TACWSA with hypoesthesia was 4.7 ± 9.3% (cold), 3.9 ± 7.7% (soft touch), and 5.9 ± 11.8% (pinprick). Hypoesthesia to cold was found in 0 dermatomes in 62%, 1 dermatome in 11%, 2 dermatomes in 17% and ≥3 dermatomes in 11%. T5 was the most common dermatome with hypoesthesia. Neuropathic symptoms were identified by 13% of patients; none required treatment. CONCLUSION In long-term follow up after MIRPE with Cryo, 46.8% of patients experienced some chest wall hypoesthesia; the average TACWSA with hypoesthesia was 4-6%. Hypoesthesia was mostly limited to 1-2 dermatomes, most commonly T5. Chronic symptomatic neuropathic pain was rare. LEVEL OF EVIDENCE Level IV.
Collapse
Affiliation(s)
- R Scott Eldredge
- Division of Pediatric Surgery, Phoenix Children's, Phoenix, AZ, USA; Division of General Surgery, Mayo Clinic Arizona, Phoenix, AZ, USA
| | - Brielle Ochoa
- Division of Pediatric Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Emily Khoury
- Division of Pediatric Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Kristin Mihalcin
- Division of Pediatric Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Daniel Ostlie
- Division of Pediatric Surgery, Phoenix Children's, Phoenix, AZ, USA; University of Arizona School of Medicine, Phoenix, AZ, USA
| | - Justin Lee
- Division of Pediatric Surgery, Phoenix Children's, Phoenix, AZ, USA; University of Arizona School of Medicine, Phoenix, AZ, USA
| | - Lisa McMahon
- Division of Pediatric Surgery, Phoenix Children's, Phoenix, AZ, USA; University of Arizona School of Medicine, Phoenix, AZ, USA
| | - David Notrica
- Division of Pediatric Surgery, Phoenix Children's, Phoenix, AZ, USA; University of Arizona School of Medicine, Phoenix, AZ, USA
| | - Benjamin E Padilla
- Division of Pediatric Surgery, Phoenix Children's, Phoenix, AZ, USA; University of Arizona School of Medicine, Phoenix, AZ, USA.
| |
Collapse
|
6
|
Eldredge RS, Lai K, Ochoa B, Khoury E, Mihalcin K, Ostlie D, Lee J, McMahon L, Egan C, Molitor M, Bae JO, Notrica D, Padilla BE. A Prospective Study of Sensory Changes in Pediatric Patients After Minimally Invasive Repair of Pectus Excavatum With Cryoablation. J Pediatr Surg 2024; 59:138-145. [PMID: 37914592 DOI: 10.1016/j.jpedsurg.2023.09.016] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 09/06/2023] [Indexed: 11/03/2023]
Abstract
BACKGROUND Cryoablation during minimally invasive repair for pectus excavatum (MIRPE) reduces opioid use and hospital length of stay. Skin hypoesthesia of the chest wall also occurs. This study sought to determine the frequency, onset, duration, and location of sensory changes and neuropathic pain after cryoablation. METHODS A prospective study was conducted on patients aged ≤21 years undergoing MIRPE with cryoablation of T3 to T7 dermatomes bilaterally for 120 s at a single institution between March 2021 to December 2022. Patients underwent sensory testing of the chest wall and neuropathic pain surveys (S-LANSS) preoperatively and then postoperatively for 6 months. Incidence and duration of hypoesthesia and neuropathic pain were evaluated. RESULTS Of 61 patients enrolled in the study, 45 completed evaluations at six months postoperatively. All patients had skin hypoesthesia on postoperative day (POD)1. The mean percentage of the treated anterior chest wall surface area (TACWSA) with hypoesthesia to cold stimulus was 52% (±29.3) on POD 0 and 55% (±19.7) on POD 1. Sensation returned over time, with hypoesthesia affecting 11.1% (±15.5) TACWSA at 6 months. At study completion 58% of patients (26/45) had complete return of sensation; hypoesthesia was found at: 1 dermatome 13% (2/45), 2 dermatomes 22% (11/45), and 3 dermatomes 4% (2/45). Neuropathic pain (S-LANSS ≥12) was documented in 16% (9/55) of patients at hospital discharge but decreased to 6.7% of patients at 6 months. CONCLUSION Onset of skin hypoesthesia after cryoablation occurred on POD0 and affected 52% of the TACWSA. All patients experienced return of sensation to varying degrees, with 58% experiencing normal sensation in all dermatomes by 6 months. The etiology of persistent hypoesthesia to select dermatomes is unknown but may be related to operative technique or cryoablation. Chronic neuropathic pain is uncommon. LEVEL OF EVIDENCE II. TYPE OF STUDY Prognosis Study.
Collapse
Affiliation(s)
- R Scott Eldredge
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Surgery, Mayo Clinic School of Medicine and Science, Phoenix, AZ, USA
| | - Krista Lai
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Brielle Ochoa
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Emily Khoury
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Kristin Mihalcin
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Daniel Ostlie
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Justin Lee
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Child Health and Development, University of Arizona, School of Medicine, Phoenix, AZ, USA
| | - Lisa McMahon
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Craig Egan
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Mark Molitor
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - Jae-O Bae
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA
| | - David Notrica
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Surgery, Mayo Clinic School of Medicine and Science, Phoenix, AZ, USA
| | - Benjamin E Padilla
- Division of Pediatric Surgery, Department of Surgery, Phoenix Children's, Phoenix, AZ, USA; Department of Child Health and Development, University of Arizona, School of Medicine, Phoenix, AZ, USA.
| |
Collapse
|
7
|
Eldredge RS, McMahon L. Intercostal nerve cryoablation therapy for the repair of pectus excavatum: a systematic review. Front Surg 2023; 10:1235120. [PMID: 37693640 PMCID: PMC10484532 DOI: 10.3389/fsurg.2023.1235120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/10/2023] [Indexed: 09/12/2023] Open
Abstract
Introduction The minimally invasive repair of pectus excavatum (PE) is a painful procedure that can result in long-term hospitalization and opioid use. To mitigate the length of stay and opioid consumption, many different analgesia strategies have been implemented. The aim of this study is to review the use and patient outcomes of intercostal nerve cryoablation (INC) during PE repair reported in the literature. Methods An unfunded literature search using PubMed identifying articles discussing INC during PE repair from 1946 to 1 July 2023 was performed. Articles were included if they discussed patient outcomes with INC use during PE repair. Articles were excluded if they were reviews/meta-analyses, editorials, or not available in English. Each article was reviewed for bias by analyzing the study methods, data analysis, patient selection, and patient follow-up. Articles comparing outcomes of INC were considered significant if p-value was <0.05. Results A total of 34 articles were included in this review that described INC use during pectus repair. Most supported a decreased hospital length of stay and opioid use with INC. Overall, INC was associated with fewer short-term and long-term complications. However, the researchers reported varied results of total hospital costs with the use of INC. Conclusion The review was limited by a paucity of prospective studies and low number of patients who received INC. Despite this, the present data support INC as a safe and effective analgesic strategy during the repair of PE.
Collapse
Affiliation(s)
| | - Lisa McMahon
- Department of Surgery, Division of Pediatric Surgery, Phoenix Children’s Hospital, Phoenix, AZ, United States
| |
Collapse
|
8
|
McMahon L, Freihart B, Meston C. The Role of Anxiety and Depression in Heart Rate Variability During Sexual Activity. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.05.124] [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: 10/16/2022]
|
9
|
Sharlin C, Patel A, Fernando S, Carroll J, Procopio B, McOmber M, McMahon L, Pasternak B. Use of Lumen-Apposing Metal Stents for Inflammatory Bowel Disease-Related Strictures at a Pediatric Center: A Case Series. JPGN Rep 2021; 2:e055. [PMID: 37207057 PMCID: PMC10191477 DOI: 10.1097/pg9.0000000000000055] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 12/24/2020] [Indexed: 05/21/2023]
Affiliation(s)
- Colby Sharlin
- From the Phoenix Children’s Hospital, Phoenix, AZ, the
| | - Ashish Patel
- Division of Pediatric Gastroenterology, Phoenix Children’s Hospital, Phoenix, AZ, and the
| | - Shahan Fernando
- Division of Pediatric Gastroenterology, Phoenix Children’s Hospital, Phoenix, AZ, and the
| | - Joshua Carroll
- Division of Pediatric Gastroenterology, Phoenix Children’s Hospital, Phoenix, AZ, and the
| | - Brianna Procopio
- Division of Pediatric Gastroenterology, Phoenix Children’s Hospital, Phoenix, AZ, and the
| | - Mark McOmber
- Division of Pediatric Gastroenterology, Phoenix Children’s Hospital, Phoenix, AZ, and the
| | - Lisa McMahon
- Division of Pediatric Surgery, Phoenix Children’s Hospital, Phoenix, AZ
| | - Brad Pasternak
- Division of Pediatric Gastroenterology, Phoenix Children’s Hospital, Phoenix, AZ, and the
| |
Collapse
|
10
|
Wagner E, McMahon L, Falkai P, Hasan A, Siskind D. Impact of smoking behavior on clozapine blood levels - a systematic review and meta-analysis. Acta Psychiatr Scand 2020; 142:456-466. [PMID: 32869278 DOI: 10.1111/acps.13228] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/14/2020] [Accepted: 08/19/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Tobacco smoking significantly impacts clozapine blood levels and has substantial implications on individual efficacy and safety outcomes. By investigating differences in clozapine blood levels in smoking and non-smoking patients on clozapine, we aim to provide guidance for clinicians how to adjust clozapine levels for patients on clozapine who change their smoking habits. METHODS We conducted a meta-analysis on clozapine blood levels, norclozapine levels, norclozapine/clozapine ratios, and concentration to dose (C/D) ratios in smokers and non-smokers on clozapine. Data were meta-analyzed using a random-effects model with sensitivity analyses on dose, ethnic origin, and study quality. RESULTS Data from 23 studies were included in this meta-analysis with 21 investigating differences between clozapine blood levels of smokers and non-smokers. In total, data from 7125 samples were included for the primary outcome (clozapine blood levels in ng/ml) in this meta-analysis. A meta-analysis of all between-subject studies (N = 16) found that clozapine blood levels were significantly lower in smokers compared with non-smokers (Standard Mean Difference (SMD) -0.39, 95% confidence interval (CI) -0.55 to -0.22, P < 0.001, I2 = 80%). With regard to the secondary outcome, C/D ratios (N = 16 studies) were significantly lower in the smoker group (n = 645) compared with the non-smoker group (n = 813; SMD -0.70, 95%CI -0.84 to -0.56, P < 0.00001, I2 = 17%). CONCLUSION Smoking behavior and any change in smoking behavior is associated with a substantial effect on clozapine blood levels. Reductions of clozapine dose of 30% are recommended when a patient on clozapine stops smoking. Reductions should be informed by clozapine steady-state trough levels and a close clinical risk-benefit evaluation.
Collapse
Affiliation(s)
- E Wagner
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - L McMahon
- School of Medicine, University of Queensland, Brisbane, Australia
| | - P Falkai
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - A Hasan
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics of the University Augsburg, Bezirkskrankenhaus Augsburg, Medical Faculty, University of Augsburg, Augsburg, Germany
| | - D Siskind
- School of Medicine, University of Queensland, Brisbane, Australia.,Metro South Addiction and Mental Health Service, Brisbane, Australia
| |
Collapse
|
11
|
McMahon L, Blake C, Lennon O. Nonpharmacological interventions for respiratory health in Parkinson's disease: A systematic review and meta-analysis. Eur J Neurol 2020; 28:1022-1040. [PMID: 33098349 DOI: 10.1111/ene.14605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 09/30/2020] [Accepted: 10/15/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND PURPOSE Respiratory dysfunction in Parkinson's disease (PD) is often an underdiagnosed and untreated impairment associated with the disease. Clinically, a reactive approach to respiratory morbidity is taken, rather than preventative approaches that address underlying impairment/s. This systematic review identifies the current evidence to support nonpharmacological interventions to improve respiratory impairments in individuals with PD. METHODS The relevant literature was searched using a customised and systematic strategy. Randomised and nonrandomised control trials of nonpharmacological interventions targeting respiratory outcome measures in PD were included. Outcomes of interest were respiratory morbidity and mortality, respiratory muscle strength, spirometry measures, lung volumes, peak cough flow, and perception of dyspnoea. RESULTS Nonpharmacological interventions included: functional training, generalised strength training, respiratory muscle strength training, aerobic exercise, qigong, yoga, breath stacking, incentive spirometry and singing. Methodological quality of included studies varied. Meta-analyses of nonpharmacological interventions demonstrated significant effects for inspiratory muscle strength (mean difference [MD] 19.68; confidence interval [CI] 8.49, 30.87; z = 3.45; p = 0.0006; I2 = 2%), expiratory muscle strength (MD 18.97; CI 7.79, 30.14; z = 3.33; p = 0.0009; I2 = 23%) and peak expiratory flow (MD 72.21; CI 31.19, 113.24; z = 3.45; p = 0.0006; I2 = 0%). Best-evidence synthesis identified level 1 evidence supporting nonpharmacological interventions for improving peak cough flow and perceived dyspnoea. No studies were identified reporting outcomes of respiratory rate, inspiration:expiration ratio or respiratory morbidity or mortality in PD. CONCLUSIONS Nonpharmacological interventions improved respiratory muscle strength and peak expiratory flow in PD. Additional trials targeting respiratory dysfunction and longitudinal studies examining the relationship between respiratory dysfunction and morbidity and mortality rates in PD are required.
Collapse
Affiliation(s)
- L McMahon
- UCD School of Public Health, Physiotherapy and Population Science, Health Sciences Centre, University College Dublin, Dublin, Ireland
| | - C Blake
- UCD School of Public Health, Physiotherapy and Population Science, Health Sciences Centre, University College Dublin, Dublin, Ireland
| | - O Lennon
- UCD School of Public Health, Physiotherapy and Population Science, Health Sciences Centre, University College Dublin, Dublin, Ireland
| |
Collapse
|
12
|
Bhadresha S, Hughes AJ, McMahon L, Reeken S, Natkunarajah N. Fixed drug eruption secondary to adalimumab. Clin Exp Dermatol 2020; 46:366-368. [PMID: 33448464 DOI: 10.1111/ced.14400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2020] [Indexed: 11/28/2022]
Affiliation(s)
- S Bhadresha
- Department of Dermatology, Kingston Hospital NHS Foundation Trust, London, UK
| | - A J Hughes
- Department of Dermatology, Kingston Hospital NHS Foundation Trust, London, UK
| | - L McMahon
- Department of Dermatology, Kingston Hospital NHS Foundation Trust, London, UK
| | - S Reeken
- Department of Dermatology, Kingston Hospital NHS Foundation Trust, London, UK
| | - N Natkunarajah
- Department of Dermatology, Kingston Hospital NHS Foundation Trust, London, UK
| |
Collapse
|
13
|
Horne GA, Stobo J, Kelly C, Mukhopadhyay A, Latif AL, Dixon-Hughes J, McMahon L, Cony-Makhoul P, Byrne J, Smith G, Koschmieder S, BrÜmmendorf TH, Schafhausen P, Gallipoli P, Thomson F, Cong W, Clark RE, Milojkovic D, Helgason GV, Foroni L, Nicolini FE, Holyoake TL, Copland M. A randomised phase II trial of hydroxychloroquine and imatinib versus imatinib alone for patients with chronic myeloid leukaemia in major cytogenetic response with residual disease. Leukemia 2020; 34:1775-1786. [PMID: 31925317 PMCID: PMC7224085 DOI: 10.1038/s41375-019-0700-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 12/23/2019] [Accepted: 12/24/2019] [Indexed: 12/19/2022]
Abstract
In chronic-phase chronic myeloid leukaemia (CP-CML), residual BCR-ABL1+ leukaemia stem cells are responsible for disease persistence despite TKI. Based on in vitro data, CHOICES (CHlorOquine and Imatinib Combination to Eliminate Stem cells) was an international, randomised phase II trial designed to study the safety and efficacy of imatinib (IM) and hydroxychloroquine (HCQ) compared with IM alone in CP-CML patients in major cytogenetic remission with residual disease detectable by qPCR. Sixty-two patients were randomly assigned to either arm. Treatment 'successes' was the primary end point, defined as ≥0.5 log reduction in 12-month qPCR level from trial entry. Selected secondary study end points were 24-month treatment 'successes', molecular response and progression at 12 and 24 months, comparison of IM levels, and achievement of blood HCQ levels >2000 ng/ml. At 12 months, there was no difference in 'success' rate (p = 0.58); MMR was achieved in 80% (IM) vs 92% (IM/HCQ) (p = 0.21). At 24 months, the 'success' rate was 20.8% higher with IM/HCQ (p = 0.059). No patients progressed. Seventeen serious adverse events, including four serious adverse reactions, were reported; diarrhoea occurred more frequently with combination. IM/HCQ is tolerable in CP-CML, with modest improvement in qPCR levels at 12 and 24 months, suggesting autophagy inhibition maybe of clinical value in CP-CML.
Collapse
MESH Headings
- Aged
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Cytogenetic Analysis/methods
- Female
- Follow-Up Studies
- Fusion Proteins, bcr-abl/genetics
- Humans
- Hydroxychloroquine/administration & dosage
- Imatinib Mesylate/administration & dosage
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Male
- Middle Aged
- Prognosis
- Retrospective Studies
- Survival Rate
Collapse
Affiliation(s)
- G A Horne
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - J Stobo
- Cancer Research UK Clinical Trials Unit, University of Glasgow, Glasgow, UK
| | - C Kelly
- Cancer Research UK Clinical Trials Unit, University of Glasgow, Glasgow, UK
| | - A Mukhopadhyay
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - A L Latif
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - J Dixon-Hughes
- Cancer Research UK Clinical Trials Unit, University of Glasgow, Glasgow, UK
| | - L McMahon
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - P Cony-Makhoul
- Haematology department, CH Annecy-Genevois, Pringy, France
| | - J Byrne
- Department of Haematology, Nottingham City Hospital, Nottingham, UK
| | - G Smith
- Department of Haematology, St James's University Hospital, Leeds, UK
| | - S Koschmieder
- Department of Medicine (Hematology Oncology, Hemostaseology, and Stem Cell Transplantation), Faculty of Medicine, RWTH Aachen University, Aachen, Germany
| | - T H BrÜmmendorf
- Department of Medicine (Hematology Oncology, Hemostaseology, and Stem Cell Transplantation), Faculty of Medicine, RWTH Aachen University, Aachen, Germany
| | - P Schafhausen
- Department of Internal Medicine, University Medical Center Hamburg, Hamburg, Germany
| | - P Gallipoli
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - F Thomson
- Experimental therapeutics, Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - W Cong
- Experimental therapeutics, Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - R E Clark
- Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - D Milojkovic
- Department of Haematology, Hammersmith Hospital, London, UK
| | - G V Helgason
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - L Foroni
- Department of Haematology, Imperial College London, London, UK
| | - F E Nicolini
- Hématologie Clinique and INSERM U1052, CRCL, Centre Léon Bérard, Lyon, France
| | - T L Holyoake
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - M Copland
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK.
| |
Collapse
|
14
|
Cardoni L, Perkins R, Shin K, Al-Samkari H, Pighetti E, Rits S, McMahon L, Connors J, Uluer A. WS01.6 Antifibrinolytics therapy for treatment of hemoptysis in adults with cystic fibrosis; does it affect lung function? J Cyst Fibros 2020. [DOI: 10.1016/s1569-1993(20)30170-3] [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: 11/17/2022]
|
15
|
O'Malley EG, Reynolds CME, O'Kelly R, McMahon L, Sheehan SR, Turner MJ. The diagnosis of gestational diabetes mellitus (GDM) using a 75 g oral glucose tolerance test: A prospective observational study. Diabetes Res Clin Pract 2020; 163:108144. [PMID: 32298706 DOI: 10.1016/j.diabres.2020.108144] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 03/30/2020] [Accepted: 04/05/2020] [Indexed: 01/15/2023]
Abstract
AIMS Screening for Gestational Diabetes Mellitus (GDM) is controversial. This prospectivestudy compared different sets of diagnostic cut-off points for plasma glucose measurements following a 75 g Oral Glucose Tolerance Test (OGTT). METHODS Women who had maternal risk factors for GDM were recruited at their convenience attheir first prenatal visit and consented to a one-step OGTT at 26-28 weeks gestation.All women fulfilling the World Health Organization (WHO) 2013 diagnostic criteriareceived standard care for GDM. RESULTS Of the 202 women, 139 (69%) had one risk factor for GDM and 63 (31%) had > 1.Using the WHO criteria, 53% (n = 108) had GDM compared with 35% (n = 71) usingCanadian criteria and 18% (n=36) using National Institute for Health Care Excellencecriteria (NICE) criteria (both p<0.001). Of the 108 women, 50% (n = 54) requiredpharmacological treatment to control hyperglycaemia. If the Canadian criteria wereapplied, 11/54 (20.4%) women would not have received hypoglycaemics. If the NICEcriteria were applied, 36/54 (66.7%) women would not have received hypoglycaemics.Maternal insulin, HOMA-IR and C-peptide measured at the time of the OGTT showed evidence of increased insulin resistance in women who had GDM based on the WHOcriteria but who had a normal OGTT based on the Canadian or NICE criteria. CONCLUSIONS Under stringent research conditions, our study suggeststhat the Canadian and, in particular, the NICE criteria are not identifying women who may benefit fromimproved glycaemic control. These findings support the need for the planned review of the NICE guidelines on GDM in 2020.
Collapse
Affiliation(s)
- E G O'Malley
- UCD Centre for Human Reproduction, Coombe Women and Infants University Hospital, Dublin, Ireland.
| | - C M E Reynolds
- UCD Centre for Human Reproduction, Coombe Women and Infants University Hospital, Dublin, Ireland
| | - R O'Kelly
- Dept. of Biochemistry, Coombe Women and Infants University Hospital, Dublin, Ireland
| | - L McMahon
- UCD Centre for Human Reproduction, Coombe Women and Infants University Hospital, Dublin, Ireland
| | - S R Sheehan
- UCD Centre for Human Reproduction, Coombe Women and Infants University Hospital, Dublin, Ireland
| | - M J Turner
- UCD Centre for Human Reproduction, Coombe Women and Infants University Hospital, Dublin, Ireland
| |
Collapse
|
16
|
Amin T, Nazmul K, Roberts M, Brumby C, McMahon L. SAT-260 Signal-averaged ECG abnormalities in Chronic Kidney disease. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.297] [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
|
17
|
Amin T, Karim N, Roberts M, McMahon L. SAT-058 Signal-averaged ECG abnormality and mortality in hemodialysis patients: A prospective study. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.082] [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] Open
|
18
|
Hicks DG, D'Aguiar M, Henry J, McMahon L, Buscaglia B, Turner B. Abstract P4-02-03: Impact of the 2018 ASCO/CAP HER2 focused update on human epidermal growth factor receptor-2 (HER2) testing in breast cancer: A retrospective review of a single institutional cohort. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-02-03] [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
Background: In the 2013 ASCO/CAP HER2 update, new recommendations for HER2 diagnostic criteria in breast cancer organized in situ hybridization (ISH) results into five categories; group1 (amplified), group 2 (monosomy), group 3 (co-amplified), group 4 (equivocal) and group 5 (non-amplified). Patients falling into groups 2, 3 and 4 were potentially eligible for HER2 targeted therapy, however, there is uncertainty from limited prospective clinical trials that show patients in these uncommon groups would receive the same benefit as group 1. Concern over whether the interpretation criteria should be modified for these uncommon groups led to the recent publication of the 2018 HER2 focused update. This update has modified ISH criteria for groups 2, 3 and 4, recommending the final diagnosis take into consideration both immunohistochemistry (IHC) and ISH results. The publication of this new guideline has prompted us to investigate what impact this would have on our institution.
Materials & Methods: A retrospective review of the URMC pathology database revealed 2,281 cases that had undergone HER2 FISH analysis since the 2013 update. IHC for initial HER2 screening was used, followed by reflex testing of all 2+ results and cases with histopathologic discordance. All 2,281 FISH cases were sorted into their 5 HER2 categories based on the 2013 guidelines. The final HER2 diagnosis for groups 2, 3 and 4 were then re-determined after applying the new criteria presented in the 2018 focused update.
Results: The results from the 2,281 HER2 FISH cases are shown in Tables 1 and 2. The results for group 1 and group 5 cases remained the same. However, for ISH cases in groups 2, 3 and 4, there were alterations in the final HER2 results. All 25 monosomy cases, originally interpreted as HER2 positive by the 2013 guidelines, were now considered HER2 negative. All group 3 (co-amplified) cases remained positive (due to IHC 2+ results). The largest change was that the original 199 equivocal cases, based on the 2013 guidelines, became split into 198 HER2 negative (99.5%) and 1 HER2 positive (0.5%).
Conclusion: Comparison of the HER2 FISH cases between 2013 and 2018 revealed differences in the final HER2 status. Using the 2018 guideline, 13.72% (313 cases) of the 2281 cases were HER2 positive in contrast to 14.77% (337 cases) from 2013. While that is only a difference of 1.05%, the reclassification of 198 of 199 equivocal cases to negative indicates that 9.82% of the final HER2 results for the entire patient cohort was affected. With 266,000 new cases of breast cancer annually, the final HER2 status of approximately 26,000 patients and their potential eligibility for targeted-therapy would change. Further study of the clinical significance of these changes is warranted.
Final ISH HER2 Status (2013)AmplifiedMonosomyCo-AmplifiedEquivocalNon-Amplified272 cases (11.93%)25 cases (1.10%)40 cases (1.75%)199 cases (8.72%)1,745 cases (76.50%)
Citation Format: Hicks DG, D'Aguiar M, Henry J, McMahon L, Buscaglia B, Turner B. Impact of the 2018 ASCO/CAP HER2 focused update on human epidermal growth factor receptor-2 (HER2) testing in breast cancer: A retrospective review of a single institutional cohort [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-02-03.
Collapse
Affiliation(s)
- DG Hicks
- University of Rochester Medical Center, Rochester, NY
| | - M D'Aguiar
- University of Rochester Medical Center, Rochester, NY
| | - J Henry
- University of Rochester Medical Center, Rochester, NY
| | - L McMahon
- University of Rochester Medical Center, Rochester, NY
| | - B Buscaglia
- University of Rochester Medical Center, Rochester, NY
| | - B Turner
- University of Rochester Medical Center, Rochester, NY
| |
Collapse
|
19
|
Buscaglia B, Turner B, Goda H, Huang W, Leitzel K, Natori T, Nakano Y, Okada H, Sperinde J, Ali S, Vasekar M, D'Aguiar M, McMahon L, Henry J, Lipton A, Hicks D. Abstract P1-03-02: ASCO/CAP human epidermal growth factor receptor-2 (HER2) in situ hybridization (ISH) categories evaluated by quantitative HER2 protein diagnostic methodologies: A comparative analysis. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-03-02] [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
Background: In 2013, the ASCO/CAP consensus panel published updated guidelines for HER2 testing in breast cancer that modified the definition of HER2 amplification by in situ hybridization (ISH), creating five new prognostic categories (group 1: classic amplified, group 2: monosomy, group 3: co-amplified (polysomy), group 4: equivocal, and group 5: classic non-amplified). Patients determined to be ISH amplified, were considered eligible for HER2-directed therapy. Concern over whether patients from non-classic groups 2-4 would benefit from treatment has led to the recent publication of the 2018 HER2 focused update. This update has modified the criteria for interpreting these ISH categories, recommending that the final diagnosis take into consideration a combination of HER2 immunohistochemistry (IHC) and ISH results. With increased emphasis on the HER2 protein assessment, it has prompted us to quantitatively examine HER2 protein expression in the ISH categories, using two different novel technologies. Materials & Methods: A cohort of 170 cases (URMC) and 102 cases (PSHMC) of invasive breast cancers, which had previously undergone HER2 IHC and ISH testing, were selected for this study. Cases were sorted and categorized into the HER2 ISH categories defined by ASCO/CAP. HER2 protein expression was quantitatively measured in the URMC and PSHMC cohorts using a novel immunodetection methodology (streptavidin-coated Phosphor-Integrated Dot (PID) fluorescent nanoparticles), and a novel dual-antibody, proximity-binding immunoassay (HERmark® Breast Cancer Assay, Monogram Biosciences, South San Francisco, California), respectively. HER2 protein expression was compared to the HER2 FISH and IHC results by ASCO/CAP category. Results: Cases in group 1 had a significantly (p < 0.01) higher average PID/cell and HERmark compared to cases in groups 2-5 (Table 1). Cases in groups 2-4 showed lower quantitative levels of HER2 protein expression, similar to the classic non-amplified cases (group 5). Group 1 was further divided into three subgroups (Table 2): Group A - ISH high-level amplified (ratio > 2, HER2 > 6, CEP17 < 2.7), Group B - amplified with elevated CEP17 (ratio > 2, CEP17 > 2.7), and Group C - low-level amplified (ratio > 2, HER2 > 4 and < 6). Group A and B had a significantly (p < 0.01) higher average PID/cell and HERmark compared to Group C. Group C was more comparable to cases in groups 2-5 (Table 1). Conclusion: Our results suggest that quantitative assessment of HER2 protein expression may help to further classify cases for HER2 status for targeted therapy, supporting the 2018 ASCO/CAP recommendation that non-classic ISH results might be resolved by evaluating protein expression. Follow up studies with a larger patient cohort and dual quantitative assessment are warranted.
Average PID/cell and HERmark in ASCO category groupsASCO category groupN (URMC)PID/cell (URMC)*N (PSHMC)HERmark (PSHMC)*18888.07761.521011.20N/A32016.0213.84238.5315.95296.3208.3*averageTable 2:Average PID/cell and HERmark in subgroups of Group 1SubgroupN (URMC)PID/cell (URMC)*N (PSHMC)HERmark (PSHMC)*A24157.66465.7B34101.61044.1C3016.9329.8*average
Citation Format: Buscaglia B, Turner B, Goda H, Huang W, Leitzel K, Natori T, Nakano Y, Okada H, Sperinde J, Ali S, Vasekar M, D'Aguiar M, McMahon L, Henry J, Lipton A, Hicks D. ASCO/CAP human epidermal growth factor receptor-2 (HER2) in situ hybridization (ISH) categories evaluated by quantitative HER2 protein diagnostic methodologies: A comparative analysis [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-03-02.
Collapse
Affiliation(s)
- B Buscaglia
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - B Turner
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - H Goda
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - W Huang
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - K Leitzel
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - T Natori
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - Y Nakano
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - H Okada
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - J Sperinde
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - S Ali
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - M Vasekar
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - M D'Aguiar
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - L McMahon
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - J Henry
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - A Lipton
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| | - D Hicks
- University of Rochester Medical Center, Rochester, NY; Konica Minolta, Hino-shi, Tokyo, Japan; Monogram Biosciences, South San Francisco, CA; Penn State Hershey Medical Center, Hershey, PA; Lebanon VA Medical Center, Lebanon, PA
| |
Collapse
|
20
|
Jaroszewski DE, Gustin PJ, Haecker FM, Pilegaard H, Park HJ, Tang ST, Li S, Yang L, Uemura S, De Campos JRM, Obermeyer R, Frantz FW, Torre M, McMahon L, Hebra A, Chu CC, Phillips JD, Notrica DM, Messineo A, Kelly R, Yüksel M. Pectus excavatum repair after sternotomy: the Chest Wall International Group experience with substernal Nuss bars. Eur J Cardiothorac Surg 2017; 52:710-717. [DOI: 10.1093/ejcts/ezx221] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
21
|
Hicks DG, Goda H, Zhai H, Okada H, McMahon L, Sullivan N, Tang P, Nakano Y. Abstract P1-03-10: HER2 expression in clinical breast cancer samples: A novel detection methodology for HER2 protein quantitation using fluorescent nanoparticles. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p1-03-10] [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
Background: The human epidermal growth factor receptor-2 (HER2) is a member of a family of transmembrane tyrosine kinase receptors that play an important role in regulated normal cell growth and differentiation. The over-expression of HER2 in a subset of 15-20% of invasive breast cancers has an important bearing on prognosis, as HER2-positive tumors are associated with an aggressive clinical course and poor outcome. Targeting HER2-overexpression has been shown to be a remarkably effective therapeutic modality; however testing of tumor samples to assess the HER2 status of the patient's breast cancer is required. Clinical assays to assess the HER2 status in patients being considered for targeted therapy include immunohistochemistry (IHC), which detects protein over-expression, or fluorescence in situ hybridization (FISH), which detects gene amplification. Both the IHC and FISH methodologies have limitations. Given that the target of the currently approved drugs is the receptor protein, novel detections systems that could more accurately and quantitatively detect HER2 protein in clinical samples over a broad dynamic range would be advantageous and may be clinically helpful.
Material and Methods: A novel detection technology using streptavidin-coated Phosphor Integrated Dot fluorescent nanoparticles (PID) has been developed that can be visualized by fluorescence microscopy and used for quantitative immunofluorescence detection of protein in clinical samples using computer assisted image analysis. In the current study, PID- nanoparticles were used to analyze HER2 protein expression in breast cancer cell lines and 120 well characterized breast cancer samples. These results have been compared with HER2 IHC and HER2 FISH analysis.
Results: The expression levels of HER2 protein from 8 breast cancer cell lines was evaluated by antibody-binding capacity with FACS analysis. Formalin fixed paraffin embedded cell pellets for these cell lines were prepared and used for quantitative HER2 analysis by PID. The PID score/cell for each of these cell lines showed a strong linear correlation with antibody-binding capacity sites/cell by FACS analysis (R2 = 0.94). For the 120 breast cancer samples, PID score/cell was measured and compared against HER2 IHC membrane intensity measure by image analysis (Aperio) and HER2 FISH results. The HER2 PID score/cell showed a correlation coefficient of R2=0.72 versus the average HER2 copy number per cell by FISH, compared with a correlation coefficient of R2=0.41 for HER2 IHC membrane intensity measured by Aperio. For the HER2/CEP17 ratio, the correlation coefficient for the PID score/cell was R2=0.79 compared with a correlation coefficient of R2=0.32 for the HER2 IHC membrane intensity.
Conclusions: PID-nanoparticles demonstrate great potential for the quantitative measurement of protein of clinical interest in routine clinical samples with morphologic confirmation of the tissue being studied. Further studies looking for PID-score thresholds for HER2 gene amplification and correlations with clinical outcome data are warranted and ongoing.
Citation Format: Hicks DG, Goda H, Zhai H, Okada H, McMahon L, Sullivan N, Tang P, Nakano Y. HER2 expression in clinical breast cancer samples: A novel detection methodology for HER2 protein quantitation using fluorescent nanoparticles [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P1-03-10.
Collapse
Affiliation(s)
- DG Hicks
- University of Rochester Medical Center, Rochester, NY; BioGenex Laboratories INC., Fremont, CA; Konica Minolta Inc., Bio Health Care Business Development Division, Corporate R&D Headquarters, Hino-shi Tokyo, Japan
| | - H Goda
- University of Rochester Medical Center, Rochester, NY; BioGenex Laboratories INC., Fremont, CA; Konica Minolta Inc., Bio Health Care Business Development Division, Corporate R&D Headquarters, Hino-shi Tokyo, Japan
| | - H Zhai
- University of Rochester Medical Center, Rochester, NY; BioGenex Laboratories INC., Fremont, CA; Konica Minolta Inc., Bio Health Care Business Development Division, Corporate R&D Headquarters, Hino-shi Tokyo, Japan
| | - H Okada
- University of Rochester Medical Center, Rochester, NY; BioGenex Laboratories INC., Fremont, CA; Konica Minolta Inc., Bio Health Care Business Development Division, Corporate R&D Headquarters, Hino-shi Tokyo, Japan
| | - L McMahon
- University of Rochester Medical Center, Rochester, NY; BioGenex Laboratories INC., Fremont, CA; Konica Minolta Inc., Bio Health Care Business Development Division, Corporate R&D Headquarters, Hino-shi Tokyo, Japan
| | - N Sullivan
- University of Rochester Medical Center, Rochester, NY; BioGenex Laboratories INC., Fremont, CA; Konica Minolta Inc., Bio Health Care Business Development Division, Corporate R&D Headquarters, Hino-shi Tokyo, Japan
| | - P Tang
- University of Rochester Medical Center, Rochester, NY; BioGenex Laboratories INC., Fremont, CA; Konica Minolta Inc., Bio Health Care Business Development Division, Corporate R&D Headquarters, Hino-shi Tokyo, Japan
| | - Y Nakano
- University of Rochester Medical Center, Rochester, NY; BioGenex Laboratories INC., Fremont, CA; Konica Minolta Inc., Bio Health Care Business Development Division, Corporate R&D Headquarters, Hino-shi Tokyo, Japan
| |
Collapse
|
22
|
Cagnazzo C, Nanni O, Campora S, Frati P, Camisa R, Contu M, Sottile R, Canzanella G, McMahon L, Arizio F, Cinefra M. Clinical Trial Units in Italy: the perception of the Clinical Research Coordinators. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw345.16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
23
|
Prisco S, McMahon L. Complementary therapies in cancer care an overview of the early italian experiences. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw345.64] [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: 11/12/2022] Open
|
24
|
Viale G, Dell'Orto P, Falzon M, Fält A, Hicks D, Hoff K, Jakobsen K, Jensen LB, Levy YY, McMahon L, Miller K, Russo L. Abstract P1-01-16: Performance evaluation of two ready-to-use antibodies under development for the Dako Omnis automated staining platform on breast carcinoma specimens: Anti-estrogen receptor α clone EP1 and anti-progesterone receptor clone PgR 1294. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p1-01-16] [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
Background: The expression of estrogen receptor alpha (ERα) and progesterone receptor (PR) in breast carcinomas is a strong predictor of the efficacy of hormonal therapy for breast cancer patients as well as providing a degree of prognostic information. Anti-ERα (clone EP1) and anti-PR (clone PgR 1294) configured as FLEX ready-to-use antibodies have been tested on the Dako Omnis automated staining platform. These products are in performance evaluation and are not commercially available. A series of concordance studies were performed to evaluate the performance characteristics of these monoclonal antibodies on breast cancer tissue specimens: anti-ERα clone EP1/Dako Omnis was compared to (a) anti-ERα clone EP1/Autostainer Link 48 (238 specimens) and to (b) anti-ERα clone SP1/Autostainer (116 specimens), and anti-PR clone PgR 1294/Dako Omnis was compared to (a) anti-PR clone PgR 636/Autostainer Link 48 (289 specimens) and to (b) anti-PR clone 16 (Leica Biosystems, Newcastle, UK) (144 specimens). In addition, the specificity of the ER and PR antibodies for Dako Omnis was evaluated on a set of normal tissue specimens.
Methods: Formalin-fixed, paraffin-embedded (FFPE) human breast carcinoma specimens and normal tissues were obtained from commercial providers or local hospitals. The specimens had no associated personal information and were not traceable back to the tissue donors. Tissue pretreatment and immunohistochemical staining were performed using the recommended protocol for each antibody and staining platform. The stained slides were evaluated for nuclear ER or PR expression according to ASCO/CAP guidelines (≥1% cut-off for positive) by pathologists who were blinded from the staining method and specimen ID. The concordance studies included breast cancer specimens covering the clinical range of ER or PR expression with approximately half the specimens in the negative (<1%) category, and at least 10% of the specimens in the weakly positive (≥1 ≤10%) category in each study. Two-sided Wilson Score 95% Confidence Intervals were calculated using JMP software (SAS Institute, USA). For the analytical specificity studies the presence or absence of specific staining in the various normal tissue types was recorded.
Results: High concordance rates were observed with both anti-ERα clone EP1/Dako Omnis and anti-PR clone PgR 1294/Dako Omnis compared to the other ER/PR antibodies, with overall agreement rates exceeding 95% in all of the comparative studies. On a set of normal tissues, specific positive nuclear staining was observed only in tissue types known to express ERα or PR.
Conclusions: Monoclonal antibodies anti-ERα clone EP1 and anti-PR clone PgR 1294 configured as FLEX ready-to-use on Dako Omnis are sensitive and specific assays for detecting estrogen receptor and progesterone receptor in FFPE tissues. In comparison testing for assessment of hormonal receptor status on breast carcinoma specimens, anti-ERα clone EP1/Dako Omnis and anti-PR clone PgR 1294/Dako Omnis were highly concordant with commercially-available ER or PR antibodies.
Citation Format: Viale G, Dell'Orto P, Falzon M, Fält A, Hicks D, Hoff K, Jakobsen K, Jensen LB, Levy YY, McMahon L, Miller K, Russo L. Performance evaluation of two ready-to-use antibodies under development for the Dako Omnis automated staining platform on breast carcinoma specimens: Anti-estrogen receptor α clone EP1 and anti-progesterone receptor clone PgR 1294. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P1-01-16.
Collapse
Affiliation(s)
- G Viale
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - P Dell'Orto
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - M Falzon
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - A Fält
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - D Hicks
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - K Hoff
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - K Jakobsen
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - LB Jensen
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - YY Levy
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - L McMahon
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - K Miller
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| | - L Russo
- University of Milan and Istituto Europeo di Oncologia, Milan, Italy; UCL Advanced Diagnostics, London, United Kingdom; Dako Denmark A/S, Glostrup, Denmark; University of Rochester Medical Center, Rochester, NY
| |
Collapse
|
25
|
Tai F, Li JW, Sun J, Zheng MH, Wink J, Basta M, Fischer J, Kovach S, Tall J, Håkanson BS, Pålstedt J, Thorell A, Huntington C, Cox T, Blair L, Lincourt A, Prasad T, Kercher K, Heniford BT, Augenstein V, Strömberg H, Hellman P, Sandblom G, Gunnarsson U, Hope W, Bringman S, Chudy M, Romanowski C, Jones P, Jacombs A, Roussos E, Read J, Dardano A, Boesel T, Edye M, Ibrahim N, Lyo V, Tufaga M, Shin UK, Primus F, Harris H, Iesalnieks I, Di Cerbo F, Baladov M, Ikhlawi K, Azoury S, Rodriguez-Unda N, Soares K, Hicks C, Baltodano P, Poruk K, Hu L, Cooney C, Cornell P, Burce K, Eckhauser F, Garvey E, Zuhlke T, Jaroszewski D, Egan J, Jamshidi R, Graziano K, McMahon L, Rodriquez-Unda N, Fattori L, Leva A, Coppola S, Gianotti L, Baccay F, Alemayehu H, Singh J, Lo I, Amin A, Harrington A, Benvenuti H, Cho D, George F, Cate S. Abdominal Wall Miscellaneous. Hernia 2015; 19 Suppl 1:S5-S12. [PMID: 26518860 DOI: 10.1007/bf03355319] [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: 10/22/2022]
Affiliation(s)
- F Tai
- Department of Surgery, Cathay General Hospital, Taipei, Taiwan
| | - J W Li
- Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | | | | | - J Wink
- Division of Plastic Surgery, University of Pennsylvania, Philadelphia, USA
| | - M Basta
- Division of Plastic Surgery, University of Pennsylvania, Philadelphia, USA
| | - J Fischer
- Division of Plastic Surgery, University of Pennsylvania, Philadelphia, USA
| | - S Kovach
- Division of Plastic Surgery, University of Pennsylvania, Philadelphia, USA
| | - J Tall
- Department of Clinical Science, Danderyds Hospital & Department of Surgery, Ersta Hospital, Karolinska Institutet, Stockholm, Sweden.,Department of Surgery, Norrtälje Hospital, Stockholm, Sweden
| | - B S Håkanson
- Department of Clinical Science, Danderyds Hospital & Department of Surgery, Ersta Hospital, Karolinska Institutet, Stockholm, Sweden
| | - J Pålstedt
- Department of Clinical Science, Danderyds Hospital & Department of Surgery, Ersta Hospital, Karolinska Institutet, Stockholm, Sweden
| | - A Thorell
- Department of Clinical Science, Danderyds Hospital & Department of Surgery, Ersta Hospital, Karolinska Institutet, Stockholm, Sweden
| | - C Huntington
- Department of GI and Minimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - T Cox
- Department of GI and Minimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - L Blair
- Department of GI and Minimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - A Lincourt
- Department of GI and Minimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - T Prasad
- Department of GI and Minimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - K Kercher
- Department of GI and Minimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - B T Heniford
- Department of GI and Minimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | - V Augenstein
- Department of GI and Minimally Invasive Surgery, Carolinas Medical Center, Charlotte, USA
| | | | | | - G Sandblom
- Karolinska Institutet, Stockholm, Sweden
| | | | - W Hope
- Dept of Surgery, New Hanover Regional Medical Center, Wilmington, USA
| | - S Bringman
- Södertälje Hospital, Dept of Surgery, Karolinska Institutet, Södertälje, Sweden
| | - M Chudy
- Dept of Surgery, Ayr Hospital, Ayr, UK
| | - C Romanowski
- Clinical Development, ETHICON, Johnson & Johnson Global Surgery Group, Somerville, USA
| | - P Jones
- Clinical Development, ETHICON, Johnson & Johnson Global Surgery Group, Livingston, UK
| | - A Jacombs
- Australian School of Advanced Medicine, Macquarie University, Sydney, Australia
| | - E Roussos
- Macquarie University Hospital, Sydney, Australia
| | - J Read
- Castlereagh Imaging, Sydney, Australia
| | - A Dardano
- Boca Raton Regional Hospital, Florida, USA
| | - T Boesel
- Macquarie University Hospital, Sydney, Australia.,Univeristy of Western Sydney, Sydney, Australia
| | - M Edye
- Macquarie University Hospital, Sydney, Australia
| | - N Ibrahim
- Macquarie University Hospital, Sydney, Australia
| | - V Lyo
- Division of General Surgery, University of California San Francisco, San Francisco, USA
| | - M Tufaga
- Division of General Surgery, University of California San Francisco, San Francisco, USA
| | - U K Shin
- Division of General Surgery, University of California San Francisco, San Francisco, USA
| | - F Primus
- Division of General Surgery, University of California San Francisco, San Francisco, USA
| | - H Harris
- Division of General Surgery, University of California San Francisco, San Francisco, USA
| | | | | | - M Baladov
- Marienhospital Gelsenkirchen, Gelsenkirchen, Germany
| | - K Ikhlawi
- Marienhospital Gelsenkirchen, Gelsenkirchen, Germany
| | - S Azoury
- Department of Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, USA
| | - N Rodriguez-Unda
- Department of Plastic and Reconstructive Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicin, Baltimore, USA
| | - K Soares
- Department of Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, USA.,School of Medicine, Johns Hopkins University, Baltimore, USA
| | - C Hicks
- Department of Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, USA.,School of Medicine, Johns Hopkins University, Baltimore, USA
| | - P Baltodano
- Department of Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, USA.,School of Medicine, Johns Hopkins University, Baltimore, USA
| | - K Poruk
- Department of Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, USA
| | - L Hu
- School of Medicine, Johns Hopkins University, Baltimore, USA
| | - C Cooney
- Department of Plastic and Reconstructive Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicin, Baltimore, USA.,School of Medicine, Johns Hopkins University, Baltimore, USA
| | - P Cornell
- Department of Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, USA.,School of Medicine, Johns Hopkins University, Baltimore, USA
| | - K Burce
- Department of Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, USA.,Department of Plastic and Reconstructive Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicin, Baltimore, USA.,School of Medicine, Johns Hopkins University, Baltimore, USA
| | - F Eckhauser
- Department of Surgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, USA.,School of Medicine, Johns Hopkins University, Baltimore, USA
| | | | | | | | - J Egan
- Phoenix Children's Hospital, Phoenix, USA
| | - R Jamshidi
- Phoenix Children's Hospital, Phoenix, USA
| | - K Graziano
- Phoenix Children's Hospital, Phoenix, USA
| | - L McMahon
- Phoenix Children's Hospital, Phoenix, USA
| | | | - L Fattori
- Department of Surgery, AO San Gerardo, Monza, Italy
| | | | | | | | - F Baccay
- Department of General Surgery, New York Medical College, Valhalla, USA
| | - H Alemayehu
- Department of General Surgery, New York Medical College, Valhalla, USA
| | - J Singh
- Department of General Surgery, New York Medical College, Valhalla, USA
| | - I Lo
- Department of General Surgery, New York Medical College, Valhalla, USA
| | - A Amin
- Department of General Surgery, New York Medical College, Valhalla, USA
| | - A Harrington
- Department of General Surgery, New York Medical College, Valhalla, USA
| | - H Benvenuti
- Department of General Surgery, New York Medical College, Valhalla, USA
| | - D Cho
- Department of General Surgery, New York Medical College, Valhalla, USA
| | - F George
- Department of General Surgery, New York Medical College, Valhalla, USA
| | - S Cate
- Department of General Surgery, New York Medical College, Valhalla, USA
| |
Collapse
|
26
|
Campora S, Arizio F, Ferretti E, Morabito S, Taverniti C, Marchetti F, Dall'Agata M, Frati P, McMahon L, Ragazzini A, Cagnazzo C. New european clinical trials regulation: perception and expectations in Italy. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv348.30] [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: 11/15/2022] Open
|
27
|
|
28
|
Wasan H, Paul J, Nicolson M, Evans T, McMahon L, Morris A, McCartney E, Bridgewater C, Bowtell D, Erlander M, Oien K. Clinical Outcomes from the Uk Cup-One Study: a Multi-Centre Trial to Assess the Efficacy of Epirubicin, Cisplatin and Capecitabine (Ecx) in Carcinomas of Unknown Primary (Cup) with Prospective Validation of Molecular Classifiers. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu345.8] [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: 11/14/2022] Open
|
29
|
Jaroszewski DE, Johnson K, McMahon L, Notrica D. Sternal elevation before passing bars: a technique for improving visualization and facilitating minimally invasive pectus excavatum repair in adult patients. J Thorac Cardiovasc Surg 2013; 147:1093-5. [PMID: 24237886 DOI: 10.1016/j.jtcvs.2013.09.049] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 07/10/2013] [Accepted: 09/25/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Dawn E Jaroszewski
- Division of Cardiothoracic Surgery, Department of Surgery, Mayo Clinic Arizona, Phoenix, Ariz; Department of Surgery, Phoenix Children's Hospital, Phoenix, Ariz.
| | - Kevin Johnson
- Division of Cardiothoracic Surgery, Department of Surgery, Mayo Clinic Arizona, Phoenix, Ariz
| | - Lisa McMahon
- Division of Cardiothoracic Surgery, Department of Surgery, Mayo Clinic Arizona, Phoenix, Ariz; Department of Surgery, Phoenix Children's Hospital, Phoenix, Ariz
| | - David Notrica
- Division of Cardiothoracic Surgery, Department of Surgery, Mayo Clinic Arizona, Phoenix, Ariz; Department of Surgery, Phoenix Children's Hospital, Phoenix, Ariz
| |
Collapse
|
30
|
Aitchison M, Bray CA, Van Poppel H, Sylvester R, Graham J, Innes C, McMahon L, Vasey PA. Adjuvant 5-flurouracil, alpha-interferon and interleukin-2 versus observation in patients at high risk of recurrence after nephrectomy for renal cell carcinoma: results of a phase III randomised European Organisation for Research and Treatment of Cancer (Genito-Urinary Cancers Group)/National Cancer Research Institute trial. Eur J Cancer 2013; 50:70-7. [PMID: 24074763 DOI: 10.1016/j.ejca.2013.08.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/15/2013] [Accepted: 08/22/2013] [Indexed: 01/22/2023]
Abstract
BACKGROUND The purpose of this trial was to compare adjuvant 5-flurouracil, alpha-interferon and interleukin-2 to observation in patients at high risk of recurrence after nephrectomy for renal cell carcinoma (RCC) in terms of disease free survival, overall survival and quality of life (QoL). PATIENTS AND METHODS Patients 8weeks post nephrectomy for RCC, without macroscopic residual disease, with stage T3b-c,T4 or any pT and pN1 or pN2 or positive microscopic margins or microscopic vascular invasion, and no metastases were randomised to receive adjuvant treatment or observation. QoL was assessed by European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire-30 (QLQC-30). Treatment delivery and toxicity were monitored. The trial was designed to detect an increase in 3year disease free survival (DFS) from 50% on observation to 65% on treatment (hazard ratio (HR)=0.63) with 90% power and two-sided alpha=0.05. RESULTS From 1998 to 2007, 309 patients were randomised (155 to observation; 154 to treatment). 35% did not complete the treatment, primarily due to toxicity (92% of patients experienced ⩾grade 2, 41% ⩾grade 3). Statistically significant differences between the arms in QoL parameters at 2months disappeared by 6months although there was suggestion of a persistent deficit in fatigue and physical function. Median follow-up was 7years (maximum 12.1years). 182 patients relapsed or died. DFS at 3years was 50% with observation and 61% with treatment (HR 0.84, 95% confidence interval (CI) 0.63-1.12, p=0.233). 124 patients died. Overall survival (OS) at 5years was 63% with observation and 70% with treatment (HR 0.87, 95% CI 0.61-1.23, p=0.428). CONCLUSIONS The treatment is associated with significant toxicity. There is no statistically significant benefit for the regimen in terms of disease free or overall survival.
Collapse
Affiliation(s)
- M Aitchison
- The Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom.
| | - C A Bray
- The Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom
| | | | | | - J Graham
- Musgrove Park Hospital, Taunton, United Kingdom
| | - C Innes
- The Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom
| | - L McMahon
- The Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom
| | - P A Vasey
- School of Medicine, University of Queensland, Brisbane, Australia
| |
Collapse
|
31
|
Aitchison M, Bray CA, Van Poppel H, Sylvester R, Graham J, Innes C, McMahon L, Vasey PA. Final results from an EORTC (GU Group)/NCRI randomized phase III trial of adjuvant interleukin-2, interferon alpha, and 5-fluorouracil in patients with a high risk of relapse after nephrectomy for renal cell carcinoma (RCC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.4505] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
32
|
Wasan HS, Evans TRJ, Nicolson M, Bowtell D, Oien K, Erlander MG, Paul J, Maclean M, McMahon L. A phase II study of ECX in patients with carcinoma of unknown primary (CUP): Prospective evaluation of molecular classifiers. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
33
|
Bailey S, Benigni L, Eastwood J, Garden OA, McMahon L, Smith K, Steiner JM, Suchodolski JS, Allenspach K. Comparisons between cats with normal and increased fPLI concentrations in cats diagnosed with inflammatory bowel disease. J Small Anim Pract 2010; 51:484-9. [DOI: 10.1111/j.1748-5827.2010.00973.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
34
|
O'Reilly T, McSheehy PMJ, Kawai R, Kretz O, McMahon L, Brueggen J, Bruelisauer A, Gschwind HP, Allegrini PR, Lane HA. Comparative pharmacokinetics of RAD001 (everolimus) in normal and tumor-bearing rodents. Cancer Chemother Pharmacol 2009; 65:625-39. [PMID: 19784839 DOI: 10.1007/s00280-009-1068-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [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: 02/18/2009] [Accepted: 07/06/2009] [Indexed: 01/29/2023]
Abstract
PURPOSE Comparative pharmacokinetic (PK) analysis of the mTOR inhibitor RAD001 (everolimus) in rats and mice. METHODS Blood cell partitioning, plasma protein binding and PK parameters of RAD001 in blood and tissues (including brain) of both mice and rats were determined. PK modeling predicted plasma/blood and tumor levels from a variety of regimens and these were compared with the known human PK profile. DCE-MRI was used to compare tumor vascularity between mice and rats. Estimation of IC50 values in vitro and ED50 values in vivo were used to provide an indication of anti-tumor activity. RESULTS The PK properties of RAD001 differed between mice and rats, including erythrocyte partitioning, plasma protein binding, plasma/blood t(1/2), oral bioavailability, volume of distribution, tissue/tumor penetration and elimination. Modeling of tumor and blood/plasma PK suggested that in mice, multiple daily administrations result in a 2-fold increase in tumor levels of RAD001 at steady state, whereas in rats, a 7.9-fold increase would occur. Weekly high-dose regimens were predicted not to facilitate tumor accumulation in either species. Total tumor levels of RAD001 were four- to eight-fold greater in rats than in mice. Rat tumors had a >2-fold greater plasma content and permeability compared to mouse tumors, which could contribute to differences in tumor drug uptake. Maximal antitumor effects (T/C of 0.04-0.35) were observed in both species after daily administration with similar C(max) and AUC values of unbound (free) RAD001. These free levels of RAD001 are exceeded in serum from cancer patients receiving clinically beneficial daily regimens. In rodents, brain penetration of RAD001 was poor, but was dose-dependent and showed over-proportional uptake in rats with a longer t(1/2) compared to the systemic circulation. CONCLUSIONS The PK of RAD001 differed between mice and rats, with rats having a PK profile closer to that of humans. High intermittent doses of RAD001 may be more appropriate for treatment of brain tumors.
Collapse
Affiliation(s)
- Terence O'Reilly
- Department of Oncology Research, Novartis Institutes for BioMedical Research, WKL-125.13.17, 4002, Basel, Switzerland
| | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Aitchison M, Bray C, Van Poppel H, Sylvester R, Graham J, Innes C, McMahon L, Vasey PA. Preliminary results from a randomized phase III trial of adjuvant interleukin-2, interferon alpha and 5-fluorouracil in patients with a high risk of relapse after nephrectomy for renal cell carcinoma (RCC). J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.5040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
36
|
Brand RM, McMahon L, Jendrzejewski JL, Charron AR. Transdermal absorption of the herbicide 2,4-dichlorophenoxyacetic acid is enhanced by both ethanol consumption and sunscreen application. Food Chem Toxicol 2007; 45:93-7. [PMID: 17030379 DOI: 10.1016/j.fct.2006.08.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2006] [Revised: 07/28/2006] [Accepted: 08/13/2006] [Indexed: 11/15/2022]
Abstract
Xenobiotics absorption is a health concern and skin is a major exposure site for many of these chemicals. Both alcohol consumption and topical sunscreen application act as transdermal penetration enhancers for model xenobiotics. The effect of combining these two treatments on transdermal absorption of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) was therefore examined. Skin from rats ingesting low (1.5 g/kg) medium (4.3 g/kg) or high (6 g/kg) ethanol doses or saline control was treated with a commercially available sunscreen containing titanium dioxide and octyl methoxycinnimate and transdermal absorption of 2,4-D was monitored. Ethanol increased penetration by a factor of 1.9, 2.0 and 2.5 for animals treated with 1.5, 4.3 and 6 g/kg respectively, demonstrating an ethanol-induced dose response. Sunscreen application to skin from ethanol gavaged rats caused 2,4-D absorption above that induced by ethanol alone by an additional factor of 1.3, 2.1 and 2.9 for 1.5, 4.3 and 6 g/kg respectively. Comparing 2,4-D transdermal absorption after exposure to both ethanol and sunscreen with a theoretical value (sum of penetration after ethanol or sunscreen treatment) demonstrates that these two treatments enhance additively at the higher doses tested. Results of this study emphasize the importance of limiting excessive alcohol consumption in individuals with potential herbicide exposure rather than discouraging the use of sunscreens, since the consequences of UV-induced skin cancer are far more series than the risks that would be associated with observed increases in chemical exposure.
Collapse
Affiliation(s)
- R M Brand
- Division of Emergency Medicine, Department of Internal Medicine, Evanston Northwestern Healthcare and Feinberg School of Medicine at Northwestern University, Walgreen's Building-SB521, 2650 Ridge Avenue, Evanston, IL 60201, United States.
| | | | | | | |
Collapse
|
37
|
McMahon L, Amin M, Koek W. B33 SR 141716A AND SOME BEHAVIORAL EFFECTS OF CANNABINOID AGONISTS IN MICE: NON-CB1 RECEPTORS? Behav Pharmacol 2005. [DOI: 10.1097/00008877-200509001-00238] [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]
|
38
|
Affiliation(s)
- D J Tessier
- Department of Surgery, Mayo Clinic Scottsdale, Scottsdale, AZ, USA
| | | | | |
Collapse
|
39
|
Abstract
Oral capecitabine is a highly active, well-tolerated and convenient treatment for breast and colorectal cancer. This trial assessed the efficacy and safety of single-agent capecitabine in patients with previously treated ovarian cancer. A total of 29 patients with platinum-pretreated relapsed ovarian cancer were enrolled in this prospective, open-label, single-centre, phase II study. Patients received oral capecitabine 1250 mg m(-2) twice daily on days 1-14 of a 21-day cycle. Tumour response was evaluated using serum CA125. Out of 29 enrolled patients, 28 were evaluable, and a response was observed in eight patients (29%, 95% confidence interval (CI), 13-49%). Median progression-free and overall survivals were 3.7 (95% CI, 2.8-4.6) and 8.0 (95% CI, 4.1-11.8) months, respectively. After 6 months of treatment, 28% (95% CI, 13-48%) of patients remained progression-free and 62% (95% CI, 42-79%) were still alive. The most common clinical adverse events were hand-foot syndrome (HFS), nausea and diarrhoea. Grade 3 HFS occurred in 14% of patients, grade 3 vomiting in 10%. Efficacy and safety of capecitabine compare favourably with other monotherapies in platinum-refractory epithelial ovarian cancer. The convenience and improved safety profile of capecitabine compared with intravenous. regimens make it an ideal agent for administration in the outpatient setting.
Collapse
Affiliation(s)
- P A Vasey
- Beatson Oncology Centre, Western Infirmary, Glasgow G11 6NT, UK.
| | | | | | | | | |
Collapse
|
40
|
Symonds R, Chan S, Habeshaw T, Reed N, McMahon L, Curto J. 158 Phase I dose finding study of capecitabine, cisplatin and radiotherapy in the treatment of locally advanced squamous cervical cancer. EJC Suppl 2003. [DOI: 10.1016/s1359-6349(03)90191-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
41
|
Affiliation(s)
- E Ziglio
- World Health Organization Regional Office for Europe, Health Promotion and Investment Programme, Copenhagen, DK
| | | | | | | | | |
Collapse
|
42
|
Van Damme-Lombaerts R, Webb NAY, Hoyer PF, Mahan J, Lemire J, Ettenger R, McMahon L, Cambon N, Boger R, Kovarik JM. Single-dose pharmacokinetics and tolerability of everolimus in stable pediatric renal transplant patients. Pediatr Transplant 2002; 6:147-52. [PMID: 12000472 DOI: 10.1034/j.1399-3046.2002.01070.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Everolimus (Certican; RAD), a novel macrolide with potent immunosuppressive and anti-proliferative activities, prevents acute rejection in adult recipients of renal transplantation. This phase I trial conducted in stable pediatric renal transplant patients examined the single-dose pharmacokinetics, safety, and tolerability of everolimus in combination with cyclosporin A (CsA; Neoral) and corticosteroids, with or without azathioprine. Nineteen pediatric patients were enrolled and received a single 1.2 mg/m2 dose of everolimus. Everolimus was safe and well tolerated, with a low incidence of adverse events reported and none judged to be related to the study medication. Everolimus administration did not increase infection rates or produce clinically significant changes in vital signs or changes in electrocardiograms. Apparent clearance and volume of distribution of everolimus increased with age, weight, and body surface area in a generally linear manner across the pediatric demographic ranges. Compared with adults from a previous study, apparent clearance (L/h) and distribution volume (L) were lower in pediatric patients, whereas the elimination half-life was similar. Single-dose everolimus co-administration did not affect the steady-state pharmacokinetics of CsA. Based on this information, pediatric patients will need a dose scaled down for body size, but can probably maintain the same twice-daily dosing schedule used in adults.
Collapse
|
43
|
Klings ES, Christman BW, McClung J, Stucchi AF, McMahon L, Brauer M, Farber HW. Increased F2 isoprostanes in the acute chest syndrome of sickle cell disease as a marker of oxidative stress. Am J Respir Crit Care Med 2001; 164:1248-52. [PMID: 11673218 DOI: 10.1164/ajrccm.164.7.2101020] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [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: 11/16/2022] Open
Abstract
Nitric oxide metabolism is altered during the acute chest syndrome of sickle cell disease. In the presence of oxygen and oxygen-related molecules, nitric oxide can preferentially form the powerful oxidants nitrite, nitrate, and peroxynitrite. We hypothesized that increased oxidative stress may contribute to the pathogenesis of acute chest syndrome and measured F2 isoprostanes, a nonenzymatically generated molecule resulting from free radical catalyzed lipid peroxidation in patients with sickle cell disease in various stages of disease. Plasma samples were obtained from nineteen patients with sickle cell disease during acute chest syndrome (pre- and postexchange transfusion), vasoocclusive crisis, and/or at baseline; 12 normal volunteers served as controls. F2 isoprostanes were measured by gas chromatography/mass spectrophotometry. There was a 9-fold increase in F2 isoprostanes in patients with acute chest syndrome as compared with normal volunteers. There was approximately a 50-60% decline in isoprostanes postexchange transfusion to a level similar to that of patients with sickle cell disease at baseline. There was no difference in isoprostanes between vasoocclusive crisis and patients with sickle cell disease at baseline. Increased oxidative stress, measured by generation of F2 isoprostanes, occurs during acute chest syndrome and may have an important role in the pathogenesis of this disease process.
Collapse
Affiliation(s)
- E S Klings
- The Pulmonary Center, Department of Surgical Research, Boston University School of Medicine, Boston, Massachusetts 02118, USA.
| | | | | | | | | | | | | |
Collapse
|
44
|
Kovarik JM, Hsu CH, McMahon L, Berthier S, Rordorf C. Population pharmacokinetics of everolimus in de novo renal transplant patients: impact of ethnicity and comedications. Clin Pharmacol Ther 2001; 70:247-54. [PMID: 11557912 DOI: 10.1067/mcp.2001.118022] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Everolimus is a macrolide immunosuppressant intended for acute rejection prophylaxis after kidney transplantation. METHODS A total of 5260 blood samples were collected in the context of two randomized, double-blind, multicenter efficacy trials in 673 patients over a 6-month period after kidney transplantation. The data were evaluated in a nonlinear mixed-effects model. The influence of demographic characteristics (age, weight, sex, and ethnicity) and of comedications on everolimus exposure was explored. RESULTS For a reference 44-year-old, 71-kg Caucasian kidney allograft recipient receiving everolimus as part of a cyclosporine (INN, ciclosporin)-prednisone immunosuppressive regimen, the absorption rate constant was 6.07 h(-1) (standard error [SE], 0.70 h(-1)), the apparent clearance was 8.8 L/h (SE, 0.2 L/h), and the apparent central distribution volume was 110 L (SE, 5 L). There were no clinically relevant influences of age, weight, or sex on clearance. No significant difference in clearance was detected for Asian patients, whereas black patients had an average clearance that was 20% higher than that of nonblack patients. Patients concomitantly receiving erythromycin or azithromycin had an average 19% lower clearance. One patient receiving itraconazole had a 74% reduction in clearance. After we accounted for covariates, the remaining interindividual variability in clearance was 27% and the variability for distribution volume was 36%. The combined intraindividual and assay/measurement residual error in everolimus blood concentrations was 31%. CONCLUSIONS Dose adjustment of everolimus on the basis of weight does not appear necessary. Black patients may need a higher dose to achieve exposure that is similar to that of nonblack patients. Concomitant administration of potent inhibitors of the cytochrome P450 isozyme CYP3A may reduce everolimus clearance and increase its blood concentrations.
Collapse
Affiliation(s)
- J M Kovarik
- Novartis Pharmaceuticals, Basel, Switzerland
| | | | | | | | | |
Collapse
|
45
|
Quintin S, Michaux G, McMahon L, Gansmuller A, Labouesse M. The Caenorhabditis elegans gene lin-26 can trigger epithelial differentiation without conferring tissue specificity. Dev Biol 2001; 235:410-21. [PMID: 11437447 DOI: 10.1006/dbio.2001.0294] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
How epithelial cell fates become specified is poorly understood. We have previously shown that the putative C2H2 zinc-finger transcription factor LIN-26 is required for the differentiation of ectodermal and mesodermal epithelial cells in Caenorhabditis elegans. Here, we report that ectopic LIN-26 expression during early gastrulation transforms most blastomeres into epithelial-like cells. Specifically, LIN-26 induced the expression of three epithelial markers: the adherens junction protein JAM-1; DLG-1, which is essential for the assembly of JAM-1 at junctions; and CHE-14, which is involved in apical trafficking. Furthermore, ultrastructural studies revealed that ectopic LIN-26 expression induced the formation of adherens-like junctions. However, ectopic lin-26 expression did not confer any tissue-specific cell fate, such as the epidermal cell fate, as evidenced from the observation that several epidermal-specific genes were not induced. Conversely, we show that epidermal cells displayed some polarity defects in lin-26 mutants. We conclude that lin-26 can induce epithelial differentiation and that epitheliogenesis is not a default pathway in C. elegans.
Collapse
Affiliation(s)
- S Quintin
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/ULP, F-67404 Illkirch Cedex, C.U. de Strasbourg, France
| | | | | | | | | |
Collapse
|
46
|
McMahon L, Legouis R, Vonesch JL, Labouesse M. Assembly of C. elegans apical junctions involves positioning and compaction by LET-413 and protein aggregation by the MAGUK protein DLG-1. J Cell Sci 2001; 114:2265-77. [PMID: 11493666 DOI: 10.1242/jcs.114.12.2265] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Specialised subapical junctions play a critical role in maintaining epithelial cell polarity and tissue integrity, and provide a platform for intracellular signalling. Here we analyse the roles of C. elegans genes let-413 and dlg-1, a homologue of Drosophila lethal discs large, in the assembly of the C. elegans apical junction (CeAJ), and provide the first characterisation of this structure. We have identified dlg-1 as an essential gene in an RNA interference screen against C. elegans homologues of genes encoding proteins involved in tight or septate junction formation. We show that DLG-1 colocalises with the junctional protein JAM-1 at CeAJs in a unit distinct from HMP-1/α-catenin, and apical to the laterally localised LET-413. Loss of dlg-1 activity leads to JAM-1 mislocalisation and the disappearance of the electron-dense component of the CeAJs, but only mild adhesion and polarity defects. In contrast, loss of let-413 activity leads to the formation of basally extended discontinuous CeAJs and strong adhesion and polarity defects. Interestingly, in LET-413-deficient embryos, CeAJ markers are localised along the lateral membrane in a manner resembling that observed in wild-type embryos at the onset of epithelial differentiation. We conclude that the primary function of LET-413 is to correctly position CeAJ components at a discrete subapical position. Furthermore, we propose that DLG-1 is required to aggregate JAM-1 and other proteins forming the electron-dense CeAJ structure. Our data suggest that epithelial adhesion is maintained by several redundant systems in C. elegans.
Collapse
Affiliation(s)
- L McMahon
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/ULP, BP163, 1, rue Laurent Fries, 67404 Illkirch, France
| | | | | | | |
Collapse
|
47
|
Abstract
OBJECTIVE The authors tested a model linking specific leader-empowering behaviors to staff nurse perceptions of workplace empowerment, occupational stress, and work effectiveness in a recently-merged Canadian acute care hospital. SUMMARY BACKGROUND DATA An integration of Kanter's organizational empowerment theory and Conger and Kunungo's model of the leader empowerment process constituted the theoretical framework for the study. Few published studies were found in which specific leader behaviors were linked empirically to staff nurses' workplace empowerment. METHODS Staff nurses (n = 537) were surveyed shortly after a merger of two large tertiary hospitals. Structural equation modeling techniques were used to test the proposed model. RESULTS Leader-empowering behaviors significantly influenced employees perceptions of formal and informal power and access to empowerment structures (information support, resources, and opportunity). Higher perceived access to empowerment structures predicted lower levels of job tension and increased work effectiveness. The amount of explained variance in the final model was 42%. CONCLUSIONS Support for the model tested in this study highlights the importance of nurse managers' leadership behaviors within current turbulent healthcare organizations.
Collapse
Affiliation(s)
- H K Laschinger
- Faculty of Health Sciences, University of Western Ontario, London, Canada
| | | | | | | |
Collapse
|
48
|
Atweh GF, Sutton M, Nassif I, Boosalis V, Dover GJ, Wallenstein S, Wright E, McMahon L, Stamatoyannopoulos G, Faller DV, Perrine SP. Sustained induction of fetal hemoglobin by pulse butyrate therapy in sickle cell disease. Blood 1999; 93:1790-7. [PMID: 10068649 PMCID: PMC4269326] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
High levels of fetal hemoglobin (Hb F) protect from many of the complications of sickle cell disease and lead to improved survival. Butyrate and other short chain fatty acids were previously shown to increase Hb F production in erythroid cells in vitro and in animal models in vivo. However, butyrates are also known to inhibit the proliferation of many cell types, including erythroid cells. Experience with the use of butyrate in animal models and in early clinical trials demonstrated that the Hb F response may be lost after prolonged administration of high doses of butyrate. We hypothesized that this loss of response may be a result of the antiproliferative effects of butyrate. We designed a regimen consisting of intermittent or pulse therapy in which butyrate was administered for 4 days followed by 10 to 24 days with no drug exposure. This pulse regimen induced fetal globin gene expression in 9 of 11 patients. The mean Hb F in this group increased from 7.2% to 21.0% (P <.002) after intermittent butyrate therapy for a mean duration of 29.9 weeks. This was associated with a parallel increase in the number of F cells and F reticulocytes. The total hemoglobin levels also increased from a mean of 7.8 g/dL to a mean of 8.8 g/dL (P <.006). The increased levels of Hb F were sustained in all responders, including 1 patient who has been on pulse butyrate therapy for more than 28 months. This regimen, which resulted in a marked and sustained increase in Hb F levels in more than two thirds of the adult sickle cell patients enrolled in this study, was well tolerated without adverse side effects. These encouraging results require confirmation along with an appropriate evaluation of clinical outcomes in a larger number of patients with sickle cell disease.
Collapse
Affiliation(s)
- G F Atweh
- Departments of Medicine, Pediatrics and Biomathematical Sciences, Mount Sinai School of Medicine, New York, NY, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Zauber NP, Sabbath-Solitare M, Marotta SP, McMahon L, Bishop DT. Comparison of allelic ratios from paired blood and paraffin-embedded normal tissue for use in a polymerase chain reaction to assess loss of heterozygosity. Mol Diagn 1999; 4:29-35. [PMID: 10229772 DOI: 10.1016/s1084-8592(99)80047-2] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND One method to assess loss of heterozygosity (LOH) of various genes is the amplification of DNA from neoplastic tissue by using microsatellite markers. LOH can best be considered on a quantitative basis as a comparison of allelic ratios of neoplastic tissue to that of the normal control. We will illustrate through quantitative methods the importance of using the appropriate controls when determining allelic loss. METHODS AND RESULTS DNA extracted from 28 paired blood and formalin-fixed, paraffin-embedded normal mucosal tissue was amplified using the DP1 microsatellite marker, consisting of a variable number of CA repeats. This marker is located within the D5S346 (DP1) region on chromosome 5 and is linked to the adenomatous polyposis coli gene. Allelic ratios were calculated after scanning autoradiographs on a densitometer. Ratio values approaching 1 were observed when the two alleles were close in molecular weight, whereas ratios less than 1 were detected when the two alleles had very different molecular weights. This discrepancy was more pronounced in paraffin-embedded tissue than with blood samples. CONCLUSION For LOH amplification assays, it is best to use normal control samples that are of the same tissue source as the neoplastic sample being analyzed. When assessing LOH in neoplastic tissue, a quantitative value rather than visual assessment of the alleles should be considered. The values may be normalized by dividing the ratio of the two tumor alleles by the ratio of the two normal alleles.
Collapse
Affiliation(s)
- N P Zauber
- Department of Medicine, Saint Barnabas Medical Center, Livingston, NJ, USA
| | | | | | | | | |
Collapse
|
50
|
Abstract
OBJECTIVE Sensorineural hearing loss (SNHL) has been associated with sickle cell disease (SCD) in older children and adults. Few studies have investigated this association in younger children. DESIGN In a cohort of pediatric patients followed at our sickle cell clinic, with a mean age of 7.8 years, 154 audiograms were completed on 84 patients. RESULTS This produced 22 subjects with abnormal audiograms. Middle ear effusion was the etiology of 19 subjects' audiometric findings. Three children were found to have mild SNHL. None of the subjects had hearing loss of severity which would warrant amplification. The prevalence rate for SNHL in our cohort of pediatric patients was 3.5%. CONCLUSION This differs from past reports, and may reflect an age dependent prevalence of SNHL in this disease.
Collapse
Affiliation(s)
- C B MacDonald
- Department of Otolaryngology--Head and Neck Surgery, Boston Medical Center, MA 02118-2393, USA
| | | | | | | |
Collapse
|