1
|
Prasad S, Alzate JD, Mullen R, Bernstein K, Qu T, Silverman J, Kondziolka D. Outcomes of Gamma Knife Radiosurgery for Brain Metastases in the Motor Cortex. Neurosurgery 2024; 94:606-613. [PMID: 37823677 DOI: 10.1227/neu.0000000000002716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/14/2023] [Indexed: 10/13/2023] Open
Abstract
BACKGROUND AND OBJECTIVES To study the clinical, imaging, and survival outcomes in patients with motor cortex brain metastases treated with stereotactic radiosurgery (SRS). METHODS Imaging and clinical data were obtained from our prospective patient registry. Tumor volumes were obtained from serial imaging data. RESULTS The outcomes of 208 patients with metastases involving the motor cortex who underwent SRS between 2012 and 2021 were analyzed. A total of 279 metastases (0.01 cm 3 -12.18 cm 3 , mean 0.74 cm 3 ) were irradiated. The SRS margin dose varied from 10 to 20 Gy (mean 16.9 Gy). The overall tumor control rate was 97.8%. Perilesional edema was noted in 69 (25%) tumors at presentation. Adverse radiation effects (ARE) were noted in 6% of all tumors but were symptomatic in only 1.4%. Median time to appearance of symptomatic ARE was 8 months. Edema without ARE was observed in 13%. New focal seizures were noted in 5 patients (2%) and new generalized seizures in 1 patient (0.3%). Thirty-six patients (17%) presented with motor deficits. At final follow-up, 32 (85%) were improved or unchanged, 13 (41%) had a normal examination, 10 (31%) had mild deficits, and 9 (28%) still had moderate deficits. New remote brain metastases were found in 31% of patients at a median of 8 months. After treatment, the Karnofsky performance score distribution of the population showed an overall right shift and a median survival of 10 months. Patients with incidentally found brain metastases had significantly better survival than those presenting with deficits (median 13 vs 9 months) ( P = .048). Absence of a neurological deficit, recursive partitioning analysis Class I and II, and dose >18 Gy were each associated with a significant survival advantage. CONCLUSION SRS for motor cortex metastases is safe in most patients and effective in providing tumor control. Patients treated before neurological deficits develop show better outcomes.
Collapse
Affiliation(s)
- Shefalika Prasad
- Department of Neurosurgery, NYU Grossman School of Medicine, New York , New York , USA
- Center for Advanced Radiosurgery, NYU Langone Health, New York , New York , USA
- Jacobs School of Medicine and Biomedical Sciences, Buffalo , New York , USA
| | - Juan Diego Alzate
- Department of Neurosurgery, NYU Grossman School of Medicine, New York , New York , USA
- Center for Advanced Radiosurgery, NYU Langone Health, New York , New York , USA
| | - Reed Mullen
- Department of Neurosurgery, NYU Grossman School of Medicine, New York , New York , USA
- Center for Advanced Radiosurgery, NYU Langone Health, New York , New York , USA
| | - Kenneth Bernstein
- Department of Radiation Oncology, NYU Grossman School of Medicine, New York , New York , USA
- Center for Advanced Radiosurgery, NYU Langone Health, New York , New York , USA
| | - Tanxia Qu
- Department of Radiation Oncology, NYU Grossman School of Medicine, New York , New York , USA
- Center for Advanced Radiosurgery, NYU Langone Health, New York , New York , USA
| | - Joshua Silverman
- Department of Neurosurgery, NYU Grossman School of Medicine, New York , New York , USA
- Department of Radiation Oncology, NYU Grossman School of Medicine, New York , New York , USA
- Center for Advanced Radiosurgery, NYU Langone Health, New York , New York , USA
| | - Douglas Kondziolka
- Department of Neurosurgery, NYU Grossman School of Medicine, New York , New York , USA
- Department of Radiation Oncology, NYU Grossman School of Medicine, New York , New York , USA
- Center for Advanced Radiosurgery, NYU Langone Health, New York , New York , USA
| |
Collapse
|
2
|
Berger A, Mullen R, Bernstein K, Mashiach E, Meng Y, Silverman JS, Sulman EP, Golfinos JG, Kondziolka D. Volumetric growth rate of incidentally found meningiomas on immunotherapy. J Neurooncol 2024; 166:303-307. [PMID: 38194196 DOI: 10.1007/s11060-023-04558-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 12/27/2023] [Indexed: 01/10/2024]
Abstract
PURPOSE The expression of PD-L1 in high-grade meningiomas made it a potential target for immunotherapy research in refractory cases. Several prospective studies in this field are still on going. We sought to retrospectively investigate the effects of check-point inhibitors (CI) on meningiomas that had been naïve to either surgical or radiation approaches by following incidental meningiomas found during treatment with CI for various primary metastatic cancers. METHODS We used the NYU Perlmutter Cancer Center Data Hub to find patients treated by CI for various cancers, who also had serial computerized-tomography (CT) or magnetic-resonance imaging (MRI) reports of intracranial meningiomas. Meningioma volumetric measurements were compared between the beginning and end of the CI treatment period. Patients treated with chemotherapy during this period were excluded. RESULTS Twenty-five patients were included in our study, of which 14 (56%) were on CI for melanoma, 5 (20%) for non-small-cell lung cancer and others. CI therapies included nivolumab (n = 15, 60%), ipilimumab (n = 11, 44%) and pembrolizumab (n = 9, %36), while 9 (36%) were on ipilimumab/nivolumab combination. We did not find any significant difference between tumor volumes before and after treatment with CI (1.31 ± 0.46 vs. 1.34 ± 0.46, p=0.8, respectively). Among patients beyond 1 year of follow-up (n = 13), annual growth was 0.011 ± 0.011 cm3/year. Five patients showed minor volume reduction of 0.12 ± 0.10 cm3 (21 ± 6% from baseline). We did not find significant predictors of tumor volume reduction. CONCLUSION Check-point inhibitors may impact the natural history of meningiomas. Additional research is needed to define potential clinical indications and treatment goals.
Collapse
Affiliation(s)
- Assaf Berger
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, USA.
- Functional Neurosurgery and Stereotactic Radiosurgery, University at Buffalo Neurosurgery (UBNS), NYU Langone Medical Center, 40 George Karl Blvd, 14221, Williamsville, NY, USA.
| | - Reed Mullen
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, USA
| | - Kenneth Bernstein
- Department of Radiation Oncology, NYU Langone Health Medical Center, New York University, New York, USA
| | - Elad Mashiach
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, USA
| | - Ying Meng
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, USA
| | - Joshua S Silverman
- Department of Radiation Oncology, NYU Langone Health Medical Center, New York University, New York, USA
| | - Erik P Sulman
- Department of Radiation Oncology, NYU Langone Health Medical Center, New York University, New York, USA
| | - John G Golfinos
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, USA
| | - Douglas Kondziolka
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, USA
| |
Collapse
|
3
|
Alzate JD, Mashiach E, Berger A, Bernstein K, Mullen R, Nigris Vasconcellos FD, Qu T, Silverman JS, Donahue BR, Cooper BT, Sulman EP, Golfinos JG, Kondziolka D. Low-Dose Radiosurgery for Brain Metastases in the Era of Modern Systemic Therapy. Neurosurgery 2023; 93:1112-1120. [PMID: 37326435 DOI: 10.1227/neu.0000000000002556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 04/17/2023] [Indexed: 06/17/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Dose selection for brain metastases stereotactic radiosurgery (SRS) classically has been based on tumor diameter with a reduction of dose in the settings of prior brain irradiation, larger tumor volumes, and critical brain location. However, retrospective series have shown local control rates to be suboptimal with reduced doses. We hypothesized that lower doses could be effective for specific tumor biologies with concomitant systemic therapies. This study aims to report the local control (LC) and toxicity when using low-dose SRS in the era of modern systemic therapy. METHODS We reviewed 102 patients with 688 tumors managed between 2014 and 2021 who had low-margin dose radiosurgery, defined as ≤14 Gy. Tumor control was correlated with demographic, clinical, and dosimetric data. RESULTS The main primary cancer types were lung in 48 (47.1%), breast in 31 (30.4%), melanoma in 8 (7.8%), and others in 15 patients (11.7%). The median tumor volume was 0.037cc (0.002-26.31 cm 3 ), and the median margin dose was 14 Gy (range 10-14). The local failure (LF) cumulative incidence at 1 and 2 years was 6% and 12%, respectively. On competing risk regression analysis, larger volume, melanoma histology, and margin dose were predictors of LF. The 1-year and 2-year cumulative incidence of adverse radiation effects (ARE: an adverse imaging-defined response includes increased enhancement and peritumoral edema) was 0.8% and 2%. CONCLUSION It is feasible to achieve acceptable LC in BMs with low-dose SRS. Volume, melanoma histology, and margin dose seem to be predictors for LF. The value of a low-dose approach may be in the management of patients with higher numbers of small or adjacent tumors with a history of whole brain radio therapy or multiple SRS sessions and in tumors in critical locations with the aim of LC and preservation of neurological function.
Collapse
Affiliation(s)
- Juan Diego Alzate
- Department of Neurological Surgery, NYU Langone Health, New York University, New York , New York , USA
| | - Elad Mashiach
- Department of Neurological Surgery, NYU Langone Health, New York University, New York , New York , USA
| | - Assaf Berger
- Department of Neurological Surgery, NYU Langone Health, New York University, New York , New York , USA
| | - Kenneth Bernstein
- Department of Radiation Oncology, NYU Langone Health, New York University, New York , New York , USA
| | - Reed Mullen
- Department of Neurological Surgery, NYU Langone Health, New York University, New York , New York , USA
| | | | - Tanxia Qu
- Department of Radiation Oncology, NYU Langone Health, New York University, New York , New York , USA
| | - Joshua S Silverman
- Department of Radiation Oncology, NYU Langone Health, New York University, New York , New York , USA
| | - Bernadine R Donahue
- Department of Radiation Oncology, NYU Langone Health, New York University, New York , New York , USA
| | - Benjamin T Cooper
- Department of Radiation Oncology, NYU Langone Health, New York University, New York , New York , USA
| | - Erik P Sulman
- Department of Radiation Oncology, NYU Langone Health, New York University, New York , New York , USA
| | - John G Golfinos
- Department of Neurological Surgery, NYU Langone Health, New York University, New York , New York , USA
| | - Douglas Kondziolka
- Department of Neurological Surgery, NYU Langone Health, New York University, New York , New York , USA
| |
Collapse
|
4
|
Alzate JD, Mullen R, Mashiach E, Bernstein K, De Nigris Vasconcellos F, Rotmann L, Berger A, Qu T, Silverman JS, Golfinos JG, Donahue BR, Kondziolka D. EGFR-mutated non-small lung cancer brain metastases and radiosurgery outcomes with a focus on leptomeningeal disease. J Neurooncol 2023; 164:387-396. [PMID: 37691032 DOI: 10.1007/s11060-023-04442-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 08/30/2023] [Indexed: 09/12/2023]
Abstract
PURPOSE Patients with EGFR-mutated NSCLC represent a unique subset of lung cancer patients with distinct clinical and molecular characteristics. Previous studies have shown a higher incidence of brain metastases (BM) in this subgroup of patients, and neurologic death has been reported to be as high as 40% and correlates with leptomeningeal disease (LMD). METHODS Between 2012 and 2021, a retrospective review of our prospective registry identified 606 patients with BM from NSCLC, with 170 patients having an EGFR mutation. Demographic, clinical, radiographic, and treatment characteristics were correlated to the incidence of LMD and survival. RESULTS LMD was identified in 22.3% of patients (n = 38) at a median follow-up of 19 (2-98) months from initial SRS. Multivariate regression analysis showed targeted therapy and a cumulative number of metastases as significant predictors of LMD (p = 0.034, HR = 0.44), (p = .04, HR = 1.02). The median survival time after SRS of the 170 patients was 24 months (CI 95% 19.1-28.1). In a multivariate Cox regression analysis, RPA, exon 19 deletion, and osimertinib treatment were significant predictors of overall survival. The cumulative incidence of neurological death at 2 and 4 years post initial stereotactic radiosurgery (SRS) was 8% and 11%, respectively, and correlated with LMD. CONCLUSION The study shows that current-generation targeted therapy for EGFR-mutated NSCLC patients may prevent the development and progression of LMD, leading to improved survival outcomes. Nevertheless, LMD is associated with poor outcomes and neurologic death, making innovative strategies to treat LMD essential.
Collapse
Affiliation(s)
- Juan Diego Alzate
- Department of Neurological Surgery, NYU Langone Health, New York University, New York, USA.
| | - Reed Mullen
- Department of Neurological Surgery, NYU Langone Health, New York University, New York, USA
| | - Elad Mashiach
- Department of Neurological Surgery, NYU Langone Health, New York University, New York, USA
| | - Kenneth Bernstein
- Department of Radiation Oncology, NYU Langone Health, New York University, New York, USA
| | | | - Lauren Rotmann
- Department of Neurological Surgery, NYU Langone Health, New York University, New York, USA
| | - Assaf Berger
- Department of Neurological Surgery, NYU Langone Health, New York University, New York, USA
| | - Tanxia Qu
- Department of Radiation Oncology, NYU Langone Health, New York University, New York, USA
| | - Joshua S Silverman
- Department of Radiation Oncology, NYU Langone Health, New York University, New York, USA
| | - John G Golfinos
- Department of Neurological Surgery, NYU Langone Health, New York University, New York, USA
| | - Bernadine R Donahue
- Department of Radiation Oncology, NYU Langone Health, New York University, New York, USA
| | - Douglas Kondziolka
- Department of Neurological Surgery, NYU Langone Health, New York University, New York, USA
| |
Collapse
|
5
|
Berger A, Mullen R, Bernstein K, Alzate JD, Silverman JS, Sulman EP, Donahue BR, Chachoua A, Shum E, Velcheti V, Sabari J, Golfinos JG, Kondziolka D. Extended Survival in Patients With Non-Small-Cell Lung Cancer-Associated Brain Metastases in the Modern Era. Neurosurgery 2023; 93:50-59. [PMID: 36722962 DOI: 10.1227/neu.0000000000002372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 11/17/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Brain metastases (BM) have long been considered a terminal diagnosis with management mainly aimed at palliation and little hope for extended survival. Use of brain stereotactic radiosurgery (SRS) and/or resection, in addition to novel systemic therapies, has enabled improvements in overall and progression-free (PFS) survival. OBJECTIVE To explore the possibility of extended survival in patients with non-small-cell lung cancer (NSCLC) BM in the current era. METHODS During the years 2008 to 2020, 606 patients with NSCLC underwent their first Gamma Knife SRS for BM at our institution with point-of-care data collection. We reviewed clinical, molecular, imaging, and treatment parameters to explore the relationship of such factors with survival. RESULTS The median overall survival was 17 months (95% CI, 13-40). Predictors of increased survival in a multivariable analysis included age <65 years ( P < .001), KPS ≥80 ( P < .001), absence of extracranial metastases ( P < .001), fewer BM at first SRS (≤3, P = .003), and targeted therapy ( P = .005), whereas chemotherapy alone was associated with shorter survival ( P = .04). In a subgroup of patients managed before 2016 (n = 264), 38 (14%) were long-term survivors (≥5 years), of which 16% required no active cancer treatment (systemic or brain) for ≥3 years by the end of their follow-up. CONCLUSION Long-term survival in patients with brain metastases from NSCLC is feasible in the current era of SRS when combined with the use of effective targeted therapeutics. Of those living ≥5 years, the chance for living with stable disease without the need for active treatment for ≥3 years was 16%.
Collapse
Affiliation(s)
- Assaf Berger
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Reed Mullen
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Kenneth Bernstein
- Department of Radiation Oncology, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Juan Diego Alzate
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Joshua S Silverman
- Department of Radiation Oncology, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Erik P Sulman
- Department of Radiation Oncology, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Bernadine R Donahue
- Department of Radiation Oncology, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Abraham Chachoua
- Medical Oncology, Perlmutter Cancer Center, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Elaine Shum
- Medical Oncology, Perlmutter Cancer Center, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Vamsidhar Velcheti
- Medical Oncology, Perlmutter Cancer Center, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Joshua Sabari
- Medical Oncology, Perlmutter Cancer Center, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - John G Golfinos
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, New York, USA
| | - Douglas Kondziolka
- Department of Neurological Surgery, NYU Langone Health Medical Center, New York University, New York, New York, USA
| |
Collapse
|
6
|
Berger A, AlzateRamirez J, Bernstein K, Mullen R, McMenomey S, Jethanemest D, Friedmann DR, Smouha E, Sulman EP, Silverman JS, Roland JT, Golfinos JG, Kondziolka D. 509 Modern Hearing Preservation Outcomes After Vestibular Schwannoma Stereotactic Radiosurgery. Neurosurgery 2023. [DOI: 10.1227/neu.0000000000002375_509] [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: 03/18/2023] Open
|
7
|
Berger A, Bernstein K, AlzateRamirez J, Mullen R, Silverman JS, Sulman EP, Donahue B, Anna P, Gurewitz J, Mureb M, Mehnert J, Madden K, Palermo A, Weber J, Golfinos JG, Kondziolka D. 876 Significant Survival Improvements for Patients with Melanoma Brain Metastases: Can We Reach Cure in the Current Era? Neurosurgery 2023. [DOI: 10.1227/neu.0000000000002375_876] [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: 03/18/2023] Open
|
8
|
Mantziaris G, Pikis S, Xu Z, Mullen R, Alzate J, Bernstein K, Kondziolka D, Wei Z, Niranjan A, Lunsford LD, Liscak R, May J, Lee CC, Yang HC, Coupé FL, Mathieu D, Sheehan K, Sheehan D, Palmer JD, Perlow HK, Peker S, Samanci Y, Peterson J, Trifiletti DM, Shepard MJ, Elhamdani S, Wegner RE, Speckter H, Hernandez W, Warnick RE, Sheehan J. Stereotactic Radiosurgery for Intraventricular Metastases: A Multicenter Study. Neurosurgery 2023; 92:565-573. [PMID: 36512817 DOI: 10.1227/neu.0000000000002248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 09/20/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Intraventricular metastases (IVMs) are uncommon, and their optimal management remains debatable. OBJECTIVE To define the safety and efficacy of stereotactic radiosurgery (SRS) in the treatment of IVMs. METHODS This retrospective, multicenter study included patients managed with SRS for IVMs. SRS-induced adverse events, local tumor or intracranial progression, and the frequency of new-onset hydrocephalus or leptomeningeal spread were documented. Analyses of variables related to patient neuroimaging or clinical outcomes were also performed. RESULTS The cohort included 160 patients from 11 centers who underwent SRS for treatment of 1045 intracranial metastases, of which 196 were IVMs. The median survival from SRS was 10 months. Of the 154 patients and 190 IVMs with imaging follow-up, 94 patients (61%) experienced distant intracranial disease progression and 16 IVMs (8.4%) progressed locally. The 12- and 24-month local IVM control rates were 91.4% and 86.1%, respectively. Sixteen (10%) and 27 (17.5%) patients developed hydrocephalus and leptomeningeal dissemination post-SRS, respectively. Adverse radiation effects were documented in 24 patients (15%). Eleven patients (6.9%) died because of intracranial disease progression. CONCLUSION SRS is an effective treatment option for IVMs, with a local IVM control rate comparable with SRS for parenchymal brain metastases. Leptomeningeal spread and hydrocephalus in patients with IVM occur in a minority of patients, but these patients warrant careful follow-up to detect these changes.
Collapse
Affiliation(s)
- Georgios Mantziaris
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Stylianos Pikis
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Zhiyuan Xu
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Reed Mullen
- Department of Neurosurgery, NYU Langone, New York, New York, USA
| | - Juan Alzate
- Department of Neurosurgery, NYU Langone, New York, New York, USA
| | | | | | - Zhishuo Wei
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Ohio, USA
| | - Ajay Niranjan
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Ohio, USA
| | - L Dade Lunsford
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Ohio, USA
| | - Roman Liscak
- Department of Stereotactic and Radiation Neurosurgery, Na Homolce Hospital, Prague, Czech Republic
| | - Jaromir May
- Department of Stereotactic and Radiation Neurosurgery, Na Homolce Hospital, Prague, Czech Republic
| | - Cheng-Chia Lee
- Department of Neurosurgery, Neurological Institute, Taipei Veteran General Hospital, Taipei, Taiwan
| | - Huai-Che Yang
- Department of Neurosurgery, Neurological Institute, Taipei Veteran General Hospital, Taipei, Taiwan
| | - François-Louis Coupé
- Department of Neurosurgery, Université de Sherbrooke, Centre de recherche du CHUS, Sherbrooke, Canada
| | - David Mathieu
- Department of Neurosurgery, Université de Sherbrooke, Centre de recherche du CHUS, Sherbrooke, Canada
| | - Kimball Sheehan
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Darrah Sheehan
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Joshua D Palmer
- Department of Radiation Oncology, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Haley K Perlow
- Department of Radiation Oncology, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Selcuk Peker
- Department of Neurosurgery, Koc University School of Medicine, Istanbul, Turkey
| | - Yavuz Samanci
- Department of Neurosurgery, Koc University School of Medicine, Istanbul, Turkey
| | - Jennifer Peterson
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, Florida, USA
| | - Daniel M Trifiletti
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, Florida, USA
| | - Matthew J Shepard
- Department of Neurosurgery, Allegheny Health Network, Pittsburgh, Ohio, USA
| | - Shahed Elhamdani
- Division of Radiation Oncology, Allegheny Health Network, Pittsburgh, Ohio, USA
| | - Rodney E Wegner
- Division of Radiation Oncology, Allegheny Health Network, Pittsburgh, Ohio, USA
| | - Herwin Speckter
- Dominican Gamma Knife Center and Radiology Department, CEDIMAT, Santo Domingo, Dominican Republic
| | - Wenceslao Hernandez
- Dominican Gamma Knife Center and Radiology Department, CEDIMAT, Santo Domingo, Dominican Republic
| | - Ronald E Warnick
- Gamma Knife Center, Jewish Hospital, Mayfield Clinic, Cincinnati, Ohio, USA
| | - Jason Sheehan
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| |
Collapse
|
9
|
Benjamin C, Gurewitz J, Nakamura A, Mureb M, Mullen R, Pacione D, Silverman J, Kondziolka D. Up-front single-session radiosurgery for large brain metastases-volumetric responses and outcomes. Acta Neurochir (Wien) 2023; 165:1365-1378. [PMID: 36702970 DOI: 10.1007/s00701-023-05491-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 01/01/2023] [Indexed: 01/28/2023]
Abstract
BACKGROUND Patients presenting with large brain metastases (LBM) pose a management challenge to the multidisciplinary neuro-oncologic team. Treatment options include surgery, whole-brain or large-field radiation therapy (WBRT), stereotactic radiosurgery (SRS), or a combination of these. OBJECTIVE To determine if corticosteroid therapy followed by SRS allows for efficient minimally invasive care in patients with LBMs not compromised by mass effect. METHODS We analyzed the change in tumor volume to determine the efficacy of single-session SRS in the treatment of LBM in comparison to other treatment modalities. Twenty-nine patients with systemic cancer and brain metastasis (≥ 2.7 cm in greatest diameter) who underwent single-session SRS were included. RESULTS Among 29 patients, 69% of patients had either lung, melanoma, or breast cancer. The median initial tumor size (maximal diameter) was 32 mm (range 28-43), and the median initial tumor volume was 9.56 cm3 (range 1.56-25.31). The median margin dose was 16 Gy (range 12-18). The average percent decrease in tumor volume compared to pre-SRS volume was 55% on imaging at 1-2 months, 58% at 3-5 months, 64% at 6-8 months, and 57% at > 8 months. There were no adverse events immediately following SRS. Median corticosteroid use after SRS was 21 days. Median survival after radiosurgery was 15 months. CONCLUSION Initial high-dose corticosteroid therapy followed by prompt single-stage SRS is a safe and efficacious method to manage patients with LBMs (defined as ≥ 2.7 cm).
Collapse
Affiliation(s)
- Carolina Benjamin
- Department of Neurosurgery, University of Miami Health System, 1095 N.W. 14Th Terrace, 2Nd Floor, Miami, FL, 33136, USA.
| | - Jason Gurewitz
- Department of Radiation Oncology, NYU Langone Medical Center, New York, NY, USA
| | - Aya Nakamura
- Department of Neurosurgery, NYU Langone Medical Center, New York, NY, USA
| | - Monica Mureb
- Department of Neurosurgery, NYU Langone Medical Center, New York, NY, USA
| | - Reed Mullen
- Department of Neurosurgery, NYU Langone Medical Center, New York, NY, USA
| | - Donato Pacione
- Department of Neurosurgery, NYU Langone Medical Center, New York, NY, USA
| | - Joshua Silverman
- Department of Radiation Oncology, NYU Langone Medical Center, New York, NY, USA
| | - Douglas Kondziolka
- Department of Neurosurgery, NYU Langone Medical Center, New York, NY, USA
| |
Collapse
|
10
|
Berger A, Alzate JD, Bernstein K, Mullen R, McMenomey S, Jethanemest D, Friedmann DR, Smouha E, Sulman EP, Silverman JS, Roland JT, Golfinos JG, Kondziolka D. Modern Hearing Preservation Outcomes After Vestibular Schwannoma Stereotactic Radiosurgery. Neurosurgery 2022; 91:648-657. [PMID: 35973088 PMCID: PMC10553130 DOI: 10.1227/neu.0000000000002090] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/26/2022] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND For patients with vestibular schwannoma (VS), stereotactic radiosurgery (SRS) has proven effective in controlling tumor growth while hearing preservation remains a key goal. OBJECTIVE To evaluate hearing outcomes in the modern era of cochlear dose restriction. METHODS During the years 2013 to 2018, 353 patients underwent Gamma knife surgery for VS at our institution. We followed 175 patients with pre-SRS serviceable hearing (Gardner-Robertson Score, GR 1 and 2). Volumetric and dosimetry data were collected, including biological effective dose, integral doses of total and intracanalicular tumor components, and hearing outcomes. RESULTS The mean age was 56 years, 74 patients (42%) had a baseline GR of 2, and the mean cochlear dose was 3.5 Gy. The time to serviceable hearing loss (GR 3-4) was 38 months (95% CI 26-46), with 77% and 62% hearing preservation in the first and second years, respectively. Patients optimal for best hearing outcomes were younger than 58 years with a baseline GR of 1, free canal space ≥0.041 cc (diameter of 4.5 mm), and mean cochlear dose <3.1 Gy. For such patients, hearing preservation rates were 92% by 12 months and 81% by 2 years, staying stable for >5 years post-SRS, significantly higher than the rest of the population. CONCLUSION Hearing preservation after SRS for patients with VS with serviceable hearing is correlated to the specific baseline GR score (1 or 2), age, cochlear dose, and biological effective dose. Increased tumor-free canal space correlates with better outcomes. The most durable hearing preservation correlates with factors commonly associated with smaller tumors away from the cochlea.
Collapse
Affiliation(s)
- Assaf Berger
- Department of Neurological Surgery, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - Juan Diego Alzate
- Department of Neurological Surgery, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - Kenneth Bernstein
- Department of Radiation Oncology, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - Reed Mullen
- Department of Neurological Surgery, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - Sean McMenomey
- Department of Otolaryngology, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - Daniel Jethanemest
- Department of Otolaryngology, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - David R. Friedmann
- Department of Otolaryngology, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - Eric Smouha
- Department of Otolaryngology, Mount Sinai Beth Israel, The Mount Sinai Hospital, New York, New York, USA
| | - Erik P. Sulman
- Department of Radiation Oncology, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - Joshua S. Silverman
- Department of Radiation Oncology, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - J. Thomas Roland
- Department of Otolaryngology, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - John G. Golfinos
- Department of Neurological Surgery, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| | - Douglas Kondziolka
- Department of Neurological Surgery, NYU Langone Health, Grossman School of Medicine, New York University, New York, New York, USA
| |
Collapse
|
11
|
Alzate JD, Berger A, Bernstein K, Mullen R, Qu T, Silverman JS, Shapiro M, Nelson PK, Raz E, Jafar JJ, Riina HA, Kondziolka D. Preoperative flow analysis of arteriovenous malformations and obliteration response after stereotactic radiosurgery. J Neurosurg 2022; 138:944-954. [PMID: 36057117 DOI: 10.3171/2022.7.jns221008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 07/11/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Morphological and angioarchitectural features of cerebral arteriovenous malformations (AVMs) have been widely described and associated with outcomes; however, few studies have conducted a quantitative analysis of AVM flow. The authors examined brain AVM flow and transit time on angiograms using direct visual analysis and a computer-based method and correlated these factors with the obliteration response after Gamma Knife radiosurgery. METHODS A retrospective analysis was conducted at a single institution using a prospective registry of patients managed from January 2013 to December 2019: 71 patients were analyzed using a visual method of flow determination and 38 were analyzed using a computer-based method. After comparison and validation of the two methods, obliteration response was correlated to flow analysis, demographic, angioarchitectural, and dosimetric data. RESULTS The mean AVM volume was 3.84 cm3 (range 0.64-19.8 cm3), 32 AVMs (45%) were in critical functional locations, and the mean margin radiosurgical dose was 18.8 Gy (range 16-22 Gy). Twenty-seven AVMs (38%) were classified as high flow, 37 (52%) as moderate flow, and 7 (10%) as low flow. Complete obliteration was achieved in 44 patients (62%) at the time of the study; the mean time to obliteration was 28 months for low-flow, 34 months for moderate-flow, and 47 months for high-flow AVMs. Univariate and multivariate analyses of factors predicting obliteration included AVM nidus volume, age, and flow. Adverse radiation effects were identified in 5 patients (7%), and 67 patients (94%) remained free of any functional deterioration during follow-up. CONCLUSIONS AVM flow analysis and categorization in terms of transit time are useful predictors of the probability of and the time to obliteration. The authors believe that a more quantitative understanding of flow can help to guide stereotactic radiosurgery treatment and set accurate outcome expectations.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Maksim Shapiro
- 3Interventional Neuroradiology, NYU Langone Health, New York University, New York, New York
| | - Peter K Nelson
- 3Interventional Neuroradiology, NYU Langone Health, New York University, New York, New York
| | - Eytan Raz
- 3Interventional Neuroradiology, NYU Langone Health, New York University, New York, New York
| | | | | | | |
Collapse
|
12
|
Mullen R, Donahue B, Alzate J, Silverman J, Berger A, Bernstein K, Kondziolka D. LOCL-11 EGFR-MUTATED NON-SMALL CELL LUNG CANCER (NSCLC) LEPTOMENINGEAL DISEASE (LMD) IN A LARGE STEREOTACTIC RADIOSURGERY PATIENT COHORT: INCIDENCE AND OUTCOME. Neurooncol Adv 2022. [DOI: 10.1093/noajnl/vdac078.053] [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: 11/13/2022] Open
Abstract
Abstract
AIM
Patients with EGFR-mutated NSCLC brain metastases (BM) treated with targeted agents +/- radiosurgery (SRS) have increasing life expectancies. Systemic treatment may become less effective in preventing CNS progression as survival is prolonged. We sought to identify subsequent LMD in patients with EGFR-mutated NSCLC treated initially with SRS for BM and describe the associated features, treatment, and outcome.
METHODS
Review of our prospective Gamma Knife registry identified 177 patients with EGFR-mutated NSCLC between 2005 and 2021 treated with SRS. The EMR was queried for development of LMD, and type of LMD was recorded (focal/nodular or diffuse).
RESULTS
38 (21%) of the 177 patients developed LMD at a median of 10 months (range 1-25 IQR) following SRS. 27 (71%) of these were on tyrosine kinase inhibitors (TKI) at time of LMD diagnosis. Median overall survival (OS) from initial SRS for the entire cohort was 21 months (18-27 95%CI). Median OS after LMD diagnosis was 5 months (2-32 95%CI). LMD was diagnosed radiographically in 35 patients (92%); 20 patients had diffuse, 15 had focal/nodular, and 3 had positive CSF cytology. 26 (68%) had systemic progression synchronously with LMD. 33 (87%) had treatment for LMD including 19 with whole brain radiation therapy, 16 with the addition of or increased dosing of TKI, 6 with SRS for nodular disease, and 9 with intraventricular chemotherapy. The one- and two-year survival rates following the diagnosis of LMD was 21% and 3%, respectively.
CONCLUSION
LMD developed in a substantial subset of our patients, and despite the use of a variety of salvage therapies, survival was poor. Investigation to identify factors correlating with the development of LMD and those related to outcome are ongoing. The development of LMD on TKI in several of our patients supports efforts to pursue development of therapeutic agents with long-lasting CNS efficacy.
Collapse
Affiliation(s)
- Reed Mullen
- NYU Langone Health , New York City, NY , USA
| | | | - Juan Alzate
- NYU Langone Health , New York City, NY , USA
| | | | | | | | | |
Collapse
|
13
|
Benjamin CG, Schnurman Z, Ashayeri K, Kazi E, Mullen R, Gurewitz J, Golfinos JG, Sen C, Placantonakis DG, Pacione D, Kondziolka D. Volumetric growth rates of untreated cavernous sinus meningiomas. J Neurosurg 2022; 136:749-756. [PMID: 34416713 DOI: 10.3171/2021.2.jns203485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 09/16/2020] [Accepted: 02/11/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Meningiomas that arise primarily within the cavernous sinus are often believed to be more indolent in their growth pattern. Despite this perceived growth pattern, disabling symptoms can arise even with small tumors. While research has been done on cavernous sinus meningiomas (CSMs) and their treatment, very little is known about their natural growth rates. With a better understanding of the growth rate of CSM, patient treatment and guidance can be can optimized and individualized. The goal of this study was to determine volumetric growth rates of untreated CSMs. METHODS Thirty-seven patients with 166 MR images obtained between May 2004 and September 2019 were reviewed, with a range of 2-13 MR images per patient (average of 4.5 MR images per patient). These scans were obtained over an average follow-up period of 45.9 months (median 33.8, range 2.8-136.9 months). All imaging prior to any intervention was included in this analysis. Volumetric measurements were performed and assessed over time. RESULTS The estimated volumetric growth rate was 23.3% per year (95% CI 10.2%-38.0%, p < 0.001), which is equivalent to an estimated volume doubling time (VDT) of 3.3 years (95% CI 2.1-7.1 years). There was no significant relationship between growth rate and patient age (p = 0.09) or between growth rate and patient sex (p = 0.78). The median absolute growth rate was 41% with a range of -1% to 1793%. With a definition of "growth" as an increase of greater than 20% during the observed period, 65% of tumors demonstrated growth within their observation interval. Growth rates for each tumor were calculated and tumors were segmented based on growth rate. Of 37 patients, 22% (8) demonstrated no growth (< 5% annual growth, equivalent to a VDT > 13.9 years), 32% (12) were designated as slow growth (annual growth rate 5%-20%, VDT 3.5-13.9 years), 38% (14) were found to have medium growth (annual growth rate 20%-100%, VDT 0.7-3.5 years), and 8% were considered fast growing (annual growth rate > 100%, VDT < 0.7 years). CONCLUSIONS This study evaluated CSM volumetric growth rates. A deeper understanding of the natural history of untreated CSMs allows for better counseling and management of patients.
Collapse
Affiliation(s)
| | - Zane Schnurman
- 2Department of Neurosurgery, NYU Langone Medical Center, New York, New York
| | - Kimberly Ashayeri
- 2Department of Neurosurgery, NYU Langone Medical Center, New York, New York
| | - Eman Kazi
- 2Department of Neurosurgery, NYU Langone Medical Center, New York, New York
| | - Reed Mullen
- 2Department of Neurosurgery, NYU Langone Medical Center, New York, New York
| | - Jason Gurewitz
- 2Department of Neurosurgery, NYU Langone Medical Center, New York, New York
| | - John G Golfinos
- 2Department of Neurosurgery, NYU Langone Medical Center, New York, New York
| | - Chandranath Sen
- 2Department of Neurosurgery, NYU Langone Medical Center, New York, New York
| | | | - Donato Pacione
- 2Department of Neurosurgery, NYU Langone Medical Center, New York, New York
| | - Douglas Kondziolka
- 2Department of Neurosurgery, NYU Langone Medical Center, New York, New York
| |
Collapse
|
14
|
Ginn RE, Packard VS, Fox TL, Arnold E, Barnett J, Bulthaus M, Bushman P, Case R, Crevey N, Fenelon M, Fuqua R, Gilman C, Hawkinson J, Heady J, Hendrickson H, Koenig E, Messer J, Mullen R, Phillips M, Santorello J, Slamp R, Wehr M, Zimmerman A. Enumeration of Total Bacteria and Coliforms in Milk by Dry Rehydratable Film Methods: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/69.3.527] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Eleven laboratories participated in a collaborative study to compare the dry rehydratable film (Petrifilm® SM and Petrifilm® VRB) methods, respectively, to the standard plate count (SPC) and violet red bile agar (VRBA) standard methods for estimation of total bacteria and coliform counts in raw and homogenized pasteurized milk. Each laboratory analyzed 16 samples (8 different samples in blind duplicate) for total count by both the SPC and Petrifilm SM methods. A second set of 16 samples was analyzed by the VRBA and Petrifilm VRB methods. The repeatability standard deviations (the square root of the between-replicates variance) of the SPC, Petrifilm SM, VRBA, and Petrifilm VRB methods were 0.0S104, 0.0444, 0.14606, and 0.13806, respectively; the reproducibility standard deviations were 0.7197, C.06380, 0.15326, and 0.13806, respectively. The difference between the mean Iog10 SPC and the mean logio Petrifilm SM results was 0.027. For the VRBA and Petrifilm VRB methods, the mean log10 difference was 0.013. These results generally indicate the suitability of the dry rehydratable film methods as alternatives to the SPC and VRBA methods for milk samples. The methods have been adopted official first action.
Collapse
Affiliation(s)
- Roy E Ginn
- Dairy Quality Control Institute, Inc., 2353 Rice St, St. Paul, MN 55113
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Benjamin C, Mureb M, Nakamura A, Mullen R, Pacione D, Silverman J, Kondziolka D. RADI-28. UP-FRONT SINGLE SESSION RADIOSURGERY FOR LARGE BRAIN METASTASES - VOLUMETRIC RESPONSES AND OUTCOMES. Neurooncol Adv 2019. [PMCID: PMC7213265 DOI: 10.1093/noajnl/vdz014.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE: Patients presenting with large brain metastases (LBM), described in the literature as ≥2.5 cm in maximum diameter or ≥10cm3in volume, pose a management challenge. For patients not compromised by mass effect, corticosteroid therapy followed by SRS allows for efficient, minimal access care that facilitates immediate institution of systemic therapy. METHODS: We performed a volumetric-based analysis in order to determine the efficacy of single-session SRS in the treatment of LBM in comparison to other treatment modalities. Thirty patients over the age of 18 with systemic cancer and brain metastases (≥2.7cm in greatest diameter or ≥10cm3in volume) who underwent single session SRS were included. Serial tumor volumes, clinical outcomes, and medication requirements were studied. RESULTS: Among 30 patients, 70% of patients had either lung, melanoma, or breast cancer. Median initial tumor size (maximum diameter) was 32mm (range 28–43) and median initial tumor volume was 9.32cm3 (range 1.09–25.31). Median marginal dose was 16Gy (range 12–18). Average percent decrease in tumor volume was 50% on imaging at 4–8 weeks, 60% at 4–6 months, 48% at 6–8 months, and 67% at >8 months compared to initial imaging. Only one patient required a subsequent craniotomy 4 years after SRS for an enlarging cyst which was granulation tissue consistent with radiation effects on pathology. There were no adverse events immediately following SRS. Median corticosteroid use after SRS was 21 days. There was no statistically significant difference in KPS score between treatment day and last follow up, suggesting relative safety and maintenance of function. CONCLUSION: Initial high dose corticosteroid therapy followed by prompt single session SRS is a safe and efficacious method of managing patients with large brain metastases (defined in our study as ≥2.7cm or ≥10cm3), if the clinical condition of the patient is acceptable at presentation.
Collapse
Affiliation(s)
| | - Monica Mureb
- New York University Medical Center, New York, NY, USA
| | - Aya Nakamura
- New York University Medical Center, New York, NY, USA
| | - Reed Mullen
- New York University Medical Center, New York, NY, USA
| | | | | | | |
Collapse
|
16
|
Blackhall VI, Bugelli M, Abbott NA, Mullen R. Abstract P3-03-33: Withdrawn. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p3-03-33] [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
This abstract was withdrawn by the authors.
Citation Format: Blackhall VI, Bugelli M, Abbott NA, Mullen R. Withdrawn [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 P3-03-33.
Collapse
Affiliation(s)
- VI Blackhall
- Highland Breast Centre, Raigmore Hospital, Inverness, Highland, United Kingdom
| | - M Bugelli
- Highland Breast Centre, Raigmore Hospital, Inverness, Highland, United Kingdom
| | - NA Abbott
- Highland Breast Centre, Raigmore Hospital, Inverness, Highland, United Kingdom
| | - R Mullen
- Highland Breast Centre, Raigmore Hospital, Inverness, Highland, United Kingdom
| |
Collapse
|
17
|
Abstract
An anonymous questionnaire was sent to 67 senior and junior psychiatrists enquiring about their perception of equivalent antipsychotic dosages of three commonly used neuroleptic drugs. Thirty-one questionnaires were returned and revealed a wide variation in perceived potencies for the specific drugs. Increased experience in psychiatry was not associated with a decreased variation. On average clinicians saw haloperidol and flupenthixol decanoate as substantially less potent, relative to chlorpromazine, than the available literature would suggest.
Collapse
|
18
|
Mullen R, Thompson J, Moussa O, Vinnicombe S, Evans A. Shear-wave elastography contributes to accurate tumour size estimation when assessing small breast cancers. Clin Radiol 2014; 69:1259-63. [DOI: 10.1016/j.crad.2014.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/06/2014] [Accepted: 08/06/2014] [Indexed: 02/08/2023]
|
19
|
Mullen R, Purdie C, Jordan L, McLean D, Whelehan P, Vinnicombe S, Brown D, Evans A. Can additional histopathological examination of ultrasound-guided axillary lymph node core biopsies improve preoperative diagnosis of primary breast cancer nodal metastasis? Clin Radiol 2013; 68:704-7. [DOI: 10.1016/j.crad.2013.01.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 01/21/2013] [Accepted: 01/22/2013] [Indexed: 11/29/2022]
|
20
|
Abstract
Mesenchymal cell tumours of the gastrointestinal tract are rare in western society. Gastrointestinal stromal tumour (GIST) is the most common of this group of tumours. Gastric schwannoma is rarer, accounting for only 0.2% of all gastric tumours and 4% of all benign gastric neoplasms. Indeed, schwannoma has only been recognized as a primary gastrointestinal tumour in the last 20 years through advances in pathological techniques. We report a rare case of gastric schwannoma, the endoscopic and radiological features of which were indistinguishable from a GIST. Due to the diagnostic uncertainty, surgical resection is the treatment of choice. Development of more reliable diagnostic methods, such as endoscopic core biopsy, may help the accuracy of preoperative diagnosis.
Collapse
Affiliation(s)
- G Guthrie
- Department of General Surgery, Perth Royal Infirmary, Taymount Terrace, Perth PH1 1NX, Scotland, UK.
| | | | | |
Collapse
|
21
|
Macaskill E, McLean D, Mullen R, Khalil A, Purdie C, Brown D. 601 Factors Influencing Requirement for Re-excision in Breast Conservation for Ductal Carcinoma in Situ. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70666-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
22
|
Mullen R, Macaskill EJ, Khalil A, Elseedawy E, Brown DC, Lee AC, Purdie C, Jordan L, Thompson AM. P3-12-04: Involved Anterior Margins after Breast Conserving Surgery: Is Re-Excision Required? Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p3-12-04] [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: Complete tumour excision in breast conserving surgery (BCS) is critical for successful treatment; involved circumferential resection margins are associated with increased disease recurrence. However, the importance of an involved anterior margin is less clear. The purpose of this study was to audit an aggressive approach to involved anterior margins and hence assess whether anterior margin re-excision yields clinical benefit.
Material and Methods: A retrospective case note and pathology review was performed for all patients who underwent BCS between 2006 and 2010 through a single cancer centre. An involved margin was defined as <1mm clearance of invasive or in situ breast cancer. Results: 1667 patients underwent BCS for invasive and/or in-situ disease, of whom 114 (6.8%) underwent re-excision, most commonly for mixed invasive and in-situ pathology. The annual re-excision rate rose significantly (p<0.001), with no change in whole tumour diameter, specimen weight or specimen volume. A total of 170 involved margins were identified: most commonly the anterior margin (59 margins, 30.6%) followed by the posterior (39 22.9%) or inferior (31, 18.3%) margin. Patients with anterior margin involvement were more likely to have grade 3 invasive disease (p=0.0323) but less likely to have residual disease found at re-excision (2/49 vs. 32/101 margins, p=0.0033); there were no differences when in-situ characteristics were compared.
Conclusions: Re-excision of involved anterior margins rarely excises residual disease and may be unnecessary. Multidisciplinary teams should consider whether further therapy for an involved anterior margin is required on a patient by patient basis.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P3-12-04.
Collapse
Affiliation(s)
- R Mullen
- 1Ninewells Hospital, Dundee, United Kingdom; Perth Royal Infirmary, Perth, United Kingdom
| | - EJ Macaskill
- 1Ninewells Hospital, Dundee, United Kingdom; Perth Royal Infirmary, Perth, United Kingdom
| | - A Khalil
- 1Ninewells Hospital, Dundee, United Kingdom; Perth Royal Infirmary, Perth, United Kingdom
| | - E Elseedawy
- 1Ninewells Hospital, Dundee, United Kingdom; Perth Royal Infirmary, Perth, United Kingdom
| | - DC Brown
- 1Ninewells Hospital, Dundee, United Kingdom; Perth Royal Infirmary, Perth, United Kingdom
| | - AC Lee
- 1Ninewells Hospital, Dundee, United Kingdom; Perth Royal Infirmary, Perth, United Kingdom
| | - C Purdie
- 1Ninewells Hospital, Dundee, United Kingdom; Perth Royal Infirmary, Perth, United Kingdom
| | - L Jordan
- 1Ninewells Hospital, Dundee, United Kingdom; Perth Royal Infirmary, Perth, United Kingdom
| | - AM Thompson
- 1Ninewells Hospital, Dundee, United Kingdom; Perth Royal Infirmary, Perth, United Kingdom
| |
Collapse
|
23
|
Abstract
BACKGROUND Magnetic Resonance Imaging (MRI) is the imaging modality of choice for fistula in ano. The purpose of this study was to analyse the use of MRI, and to assess its contribution towards the assessment of this sometimes difficult condition. METHODS A retrospective analysis of all patients with fistula in ano between January 2003 and December 2007 was performed, focussing on those who had MRI assessment. The primary pathology, indication for MRI and the contribution of this investigation to assessment of fistula in ano were analysed. RESULTS MRI was performed in 40 patients. The primary pathologies included: perianal sepsis in 20 (50%), Crohn's disease in 11 (27.5%), primary fistula in ano in 6 (15%) and others in 3 (7.5%) patients. Indications for MRI were to assess the fistula anatomy in 17 (42.5%), to assess a clinically suspected fistula in 12 (30%), to assess a complex fistula found at Examination Under Anaesthesia (EUA) in 6 (15%) and to exclude a fistula in 5 (12.5%). MRI was considered helpful in 34 (85%) of all cases. MRI established the fistula anatomy and guided further surgery in 47.1%, correlated with EUA findings in 38.2% and excluded a suspected fistula in 14.7% of these. CONCLUSIONS This study further supports the benefit of using MRI to assess fistula in ano. When used in selected patients, it was of benefit in 85% of cases, by establishing fistula anatomy and guiding further surgery, correlating EUA findings or excluding a clinically suspected fistula.
Collapse
Affiliation(s)
- R. Mullen
- Department of Colorectal Surgery, Queen Margaret Hospital, Dunfermline, UK
| | - S. Deveraj
- Department of Colorectal Surgery, Queen Margaret Hospital, Dunfermline, UK
| | - S.A. Suttie
- Department of Colorectal Surgery, Queen Margaret Hospital, Dunfermline, UK
| | - A.G. Matthews
- Department of Radiology, Queen Margaret Hospital, Dunfermline, UK
| | - S. Yalamarthi
- Department of Colorectal Surgery, Queen Margaret Hospital, Dunfermline, UK
| |
Collapse
|
24
|
Abstract
AIM To determine the outcome of surgery for colorectal cancer from a single region and to see whether location of the primary cancer influences prognosis. METHOD Patients with colorectal cancer diagnosed from January 2002 to December 2006, entered into a prospective database were followed until death or to December 2008. Right-sided (caecum to transverse colon) and left-sided (splenic flexure to rectosigmoid junction) colonic cancers and rectal cancers (distal to rectosigmoid junction to the anus) were identified. Statistical analysis was performed using Pearson's chi-square test, Kaplan-Meier (log-rank statistic) and Cox regression analysis with a P-value < 0.05 denoting significance. RESULTS Of 841 patients with solitary colorectal cancers identified (median age 72 [30-101] years; 53% male), 283 (33.7%) were right-sided colonic, 330 (39.2%) were left-sided colonic and 228 (27.1%) were rectal. Respective resection rates were 82.7%, 77.9% and 91.6%, and curative resection rates were 79.9%, 82.9.0% and 85.7%, respectively. There was no significant difference in recurrence rates between right- (16.1%), left-sided (23.0%) colonic and rectal (20.7%) cancers (P = 0.207). Respective mean survival rates were 54.4, 59.8 and 63.6 months (P = 0.007). CONCLUSION Right-sided colorectal cancers had a worse prognosis than left-sided and rectal cancers, possibly because of more advanced staging and fewer curative resections.
Collapse
Affiliation(s)
- S A Suttie
- Department of Colorectal Surgery, Queen Margaret Hospital, Dunfermline, UK
| | | | | | | | | | | |
Collapse
|
25
|
Mullen R, Hassell K, Noyce PR. Workforce mobility in the pharmacy profession. International Journal of Pharmacy Practice 2011. [DOI: 10.1111/j.2042-7174.2002.tb00699.x] [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: 12/01/2022]
Abstract
Abstract
Focal points
Collapse
Affiliation(s)
- R Mullen
- School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Oxford Road, Manchester M13 9PL
| | - K Hassell
- School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Oxford Road, Manchester M13 9PL
| | - P R Noyce
- School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Oxford Road, Manchester M13 9PL
| |
Collapse
|
26
|
Mullen R, Ray S, Ray C, Eriksen C, Gamble P. West J Med 2010; 340:c1015-c1015. [DOI: 10.1136/bmj.c1015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
27
|
Abstract
The traditional view that having a personality disorder, unlike other mental disorders, is not usually reason enough to consider a person incompetent to make healthcare decisions is challenged. The example of a case in which a woman was treated for a physical disorder without her consent illustrates that personality disorder can render a person incompetent to refuse essential treatment, particularly because it can affect the doctor-patient relationship within which consent is given.
Collapse
Affiliation(s)
- E Winburn
- Otago District Health Board, Dunedin, New Zealand.
| | | |
Collapse
|
28
|
Bell W, Davies JS, Evans WD, Scanlon MF, Mullen R. Somatic characteristics and cardiovascular risk factors in growth hormone deficiency: A randomized, double-blind, placebo-controlled study of the effect of treatment with recombinant human growth hormone. Am J Hum Biol 2004; 16:533-43. [PMID: 15368601 DOI: 10.1002/ajhb.20055] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The purpose of the present study was to identify the effect of treatment with recombinant human growth hormone (rhGH) on seven somatic characteristics and eight clinical cardiovascular risk factors. Twenty-seven male and 24 female patients between the ages of 21 and 60 years were examined. The investigation was a double-blind, placebo-controlled study of 12 months duration. Patients were assigned randomly to treatment (T) and placebo (P) groups. In the first 6 months group T received rhGH and group P placebo. In the second 6 months both groups received rhGH. Complete data were available for 23 males and 20 females. Increments were calculated between 6 months -BL (increment 1) and 12-6 months (increment 2) in both T and P groups. Apart from the somatotype, data were analysed with a 2 x 2 mixed analysis of variance (ANOVA) using treatment (rhGH and placebo) and time (increments 1 and 2). Somatotype data were analysed using a 2 x 3 multivariate ANOVA. Three significant interactions were identified in males: waist circumference (P = 0.006), trunk fat (P = 0.0001), and conicity index (P = 0.001). The only significant interaction in females was trunk fat (P = 0.006). In general, treatment and placebo groups responded differently by time and treatment. Responses were similar in males and females. In the first 6 months when group P was on placebo, waist circumference, trunk fat, and conicity index increased slightly; with group T on rhGH somatic variables declined markedly. In the second 6 months when both groups received rhGH there was a marked decline in group P and a continued decline (but less steeply) in group T. In males there were significant decreases in endomorphy in group T and increases in mesomorphy in group P. In females the somatotype remained stable. There were no significant interactions in clinical cardiovascular risk factors in either males or females. Favourable responses occurred in male and female lipid profiles, although these were not significant. It was concluded that in males waist circumference, trunk fat, conicity index, and somatotype responded significantly to treatment with rhGH; in females the only significant response was trunk fat.
Collapse
Affiliation(s)
- W Bell
- University of Wales Institute Cardiff, Cyncoed, Cardiff CF23 6XD, Wales, UK.
| | | | | | | | | |
Collapse
|
29
|
Leicht DC, Rimnac C, Mullen R. Adhesion Failure in Bonded Rubber Cylinders Part 2: Fatigue Life Prediction of External Ring-Shaped Cracks Using Tearing Energy Approach. Rubber Chemistry and Technology 2003. [DOI: 10.5254/1.3547749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Abstract
Rubber disks bonded between flat parallel metal plates are often used as adhesion test specimens; for example, ASTM D 429 1999, Method A. However, the mechanics of adhesion failure (debonding) for this geometry have not previously been fully analyzed. Therefore, a study was conducted to determine the strain energy release rate (tearing energy) for bonded rubber disks having external ring cracks at the rubber-to-metal bond and to develop a method for predicting the fatigue life.
Finite element analysis was used to determine the tearing energy as a function of crack length for disks of various dimensions (shape factors). The crack configurations considered were an external-ring-shaped crack located at the outside circumference of either one or both rubber-to-metal bonds. The fatigue crack propagation (FCP) behavior was characterized for a generic filled natural rubber material.
The tearing energy was found to be a non-linear function of crack length. For small cracks, the tearing energy was small and approached zero as the crack length decreased. The tearing energy then increased as the crack grew, indicating accelerating growth, until it passed through a maximum value. The peak tearing energy was found to depend on the height of the disk. Finally at large cracks, the tearing energy decreased or was essentially constant as the crack grew.
The fatigue life of the rubber cylinders at different shape factors was determined experimentally. An empirical model coupled with the fatigue crack propagation behavior (FCP) for the material at different tearing energies was used to predict the fatigue life. The experimental and predicted fatigue life showed excellent agreement at low and moderate shape factors. However at high shape factors, fatigue life was not well predicted. From the experimental results, it was found that, at high shape factors, cavitation occurs causing a series of “dimples” to form, which leads to the development of an internal penny-crack, thereby violating the assumed model of an external ring-shaped crack.
Collapse
Affiliation(s)
| | - C. Rimnac
- 2Case Western Reserve University, Cleveland, OH 44106-7201
| | - R. Mullen
- 2Case Western Reserve University, Cleveland, OH 44106-7201
| |
Collapse
|
30
|
Evans M, Stoddart H, Condon L, Freeman E, Grizzell M, Mullen R. Parents' perspectives on the MMR immunisation: a focus group study. Br J Gen Pract 2001; 51:904-10. [PMID: 11761204 PMCID: PMC1314147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
BACKGROUND The uptake of the combined measles, mumps and rubella immunisation (MMR) in Britain has fallen since 1998, when a link was hypothesised with the development of bowel disorders and childhood autism. Despite reassurances about the safety of MMR, uptake levels remain lower than optimal. We need to understand what influences parents' decisions on whether to accept MMR or not so that health professionals can provide a service responsive to their needs. AIM To investigate what influences parents' decisions on whether to accept or refuse the primary MMR immunisation and the impact of the recent controversy over its safety. DESIGN Qualitative study using focus group discussions. SETTING Forty-eight parents, whose youngest child was between 14 months and three years old, attended groups at community halls in six localities in Avon and Gloucestershire. METHODS Purposive sampling strategy was used to include parents from a variety of socioeconomic backgrounds. Three groups comprised parents who had accepted MMR and three groups comprised parents who had refused MMR. Data analysis used modified grounded theory techniques incorporating the constant comparative method. RESULTS All parents felt that the decision about MMR was difficult and stressful, and experienced unwelcome pressure from health professionals to comply. Parents were not convinced by Department of Health reassurances that MMR was the safest and best option for their children and many had accepted MMR unwillingly. Four key factors influenced parents' decisions: (a) beliefs about the risks and benefits of MMR compared with contracting the diseases, (b) information from the media and other sources about the safety of MMR, (c) confidence and trust in the advice of health professionals and attitudes towards compliance with this advice, and (d) views on the importance of individual choice within Government policy on immunisation. CONCLUSIONS Parents wanted up-to-date information about the risks and benefits of MMR to be available in advance of their immunisation appointment. Many parents did not have confidence in the recommendations of health professionals because they were aware that GPs needed to reach immunisation targets. Most parents would, however, welcome more open discussion about immunisation with health professionals.
Collapse
Affiliation(s)
- M Evans
- Division of Primary Health Care, University of Bristol.
| | | | | | | | | | | |
Collapse
|
31
|
Abstract
12 experienced, female trampolinists participated in a field study designed to test the conscious processing hypothesis, which predicts that the combination of task-relevant knowledge and high state anxiety will impair motor performance. Results supported the hypothesis; however, an alternative attentional explanation of the data was also identified.
Collapse
|
32
|
Abstract
Previous research has argued that skills acquired explicitly are more likely to fail under stressful conditions than skills that have been learned implicitly. The present study addressed an alternative explanation for the robustness under stress of implicit task performance. As implicit learners acquired the skill of golf putting while generating random letters, it is possible that they became desensitized to self-generated verbalizations and thus immune to the effects of competitive anxiety. We tested this interpretation while controlling for a further rival hypothesis generated by Eysenck's Processing Efficiency Theory. We also examined the effect of increased state anxiety on the kinematic processes underlying performance breakdowns. For task performance, we found evidence that partially supported the conscious processing hypothesis, while the results of the kinematic analysis of the putting stroke were equivocal. Analysis of self-reported effort scores provided partial support for processing efficiency theory.
Collapse
Affiliation(s)
- R Mullen
- School of Sport, University of Wales Institute Cardiff, Cyncoed Campus, UK.
| | | |
Collapse
|
33
|
Abstract
This study reports the findings of part of an ongoing research program examining sports performers' interpretations of competitive anxiety prior to competition. The notion of 'directional perceptions' has questioned the limited utility of examining only the intensity of competitive anxiety responses as has Jones. The purpose of this study was to examine intensity and direction, i.e., interpretation of intensity as facilitative or debilitative, of anxiety symptoms as a function of two types of sport. The types of sport were explosive (rugby league) versus fine motor skills (target rifle shooting). The sample comprised 50 male rugby league participants and 50 target rifle shooters who completed a modified version of the Competitive State Anxiety Inventory-2 prior to competition. Contingency analysis yielded a significant difference in the number of rugby players who reported somatic anxiety as facilitative and the number of rifle shooters who reported somatic states as debilitative. No such differences were evident for cognitive anxiety. Analysis of variance indicated no differences between the two groups on the intensity of cognitive and somatic anxiety, but the performers competing in rugby league interpreted both states as being more facilitative to performance; the rugby league players also had higher scores on self-confidence than the shooters. These findings provide continuing support for the measurement of directional perceptions of competitive anxiety and highlight the importance of examining individual sports.
Collapse
Affiliation(s)
- S Hanton
- School of Sport, Physical Education and Recreation, University of Wales Institute, Cardiff, UK.
| | | | | |
Collapse
|
34
|
Abstract
BACKGROUND Authors have suggested that the high rate of schizophrenia reported for African-Caribbeans living in the UK is due to misdiagnosis by British psychiatrists. AIMS To compare the diagnoses made by a Black Jamaican psychiatrist with those of White British psychiatrists. METHOD All in-patients on four wards at the Maudsley hospital were approached for the study; 66 participated: 24 White, 29 Black African-Caribbeans and 13 Blacks from other countries of origin. F.W.H., a Black Jamaican psychiatrist, conducted his standard clinical assessment and performed the Present State Examination (PSE) on these patients. His diagnoses were compared with the case note diagnoses made by British psychiatrists, and with the PSE CATEGO diagnoses. RESULTS Of 29 African and African-Caribbean patients diagnosed with schizophrenia, the diagnoses of the British and the Jamaican psychiatrists agreed in 16 instances (55%) and disagreed in 13 (45%). Hence, interrater reliability was poor (kappa = 0.45). PSE CATEGO diagnosed a higher proportion of subjects as having schizophrenia than the Jamaican psychiatrist did (chi 2 = 3.74, P = 0.052). CONCLUSIONS Agreement between the Jamaican psychiatrist and his UK counterparts about which patients had schizophrenia was poor. PSE CATEGO may overestimate rates of schizophrenia.
Collapse
Affiliation(s)
- F W Hickling
- Psychotherapy Associates International Ltd., London.
| | | | | | | |
Collapse
|
35
|
Mullen R. Emory's General Hospital 43. J Med Assoc Ga 1999; 88:50-3. [PMID: 10341493] [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] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Affiliation(s)
- R Mullen
- Woodruff Health Sciences Center of Emory University, USA
| |
Collapse
|
36
|
Abstract
A recent study by Masters (1992) investigated the effect of stress upon the performance of a well-learned motor skill, golf putting, acquired under implicit and explicit learning conditions. Masters found that stress had a detrimental effect on performance for the explicit learning group but not for the implicit learning group. However, the implicit learning group was required to perform articulatory suppression during the learning trials but not during the stress trials. As such, it is possible that the subjects in the implicit learning group continued to improve during the stress session simply because they were performing an easier task. This paper reports an experiment which re-examines Masters' (1992) conclusions by replicating and extending his method. An additional implicit learning group was included which was required to carry out articulatory suppression during both the learning trials and the stress trials. It was hypothesized that this 'new' implicit learning group would suffer the same disruption to performance as the explicit learning group, providing evidence which would contradict Masters' explanation. Thirty-two subjects were allocated to one of four groups. Performance measures were analysed using two-factor analysis of variance (4 x 5: groups x sessions) with repeated measures on the sessions factor. The main dependent variable was the number of putts successfully completed. The analysis revealed that both the implicit learning groups continued to improve their performance under stress whilst the explicit learning group did not. Despite limitations to both Masters' (1992) and the present study, these results add support to Masters' explicit knowledge hypothesis.
Collapse
Affiliation(s)
- L Hardy
- School of Sport, Health and Physical Education Sciences, University of Wales, Bangor, Gwynedd, UK
| | | | | |
Collapse
|
37
|
Howard R, Cox T, Almeida O, Mullen R, Graves P, Reveley A, Levy R. White matter signal hyperintensities in the brains of patients with late paraphrenia and the normal, community-living elderly. Biol Psychiatry 1995; 38:86-91. [PMID: 7578654 DOI: 10.1016/0006-3223(94)00248-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [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: 01/26/2023]
Abstract
We determined the prevalence and anatomical location of areas of white matter hyperintensity visualized by magnetic resonance imaging in the brains of 38 late paraphrenic patients with an onset of psychotic illness after the age of 60 and 31 healthy aged community volunteers. All degrees of white matter signal hyperintensity were very common in both groups, and there was no excess of such changes in the brain of patients. Periventricular white matter and subcortical grey matter hyperintensities were significantly associated with both measured diastolic and systolic blood pressure in patients and control subjects. Periventricular and deep white matter, together with subcortical grey matter hyperintensities, were significantly associated with increased age. The excess of such presumed brain-imaging abnormalities previously reported in patients with an onset of psychosis late in life may be a consequence of earlier authors' failure to include examination of appropriate community control populations and to carefully exclude patients with evidence of stroke.
Collapse
Affiliation(s)
- R Howard
- Section of Old Age Psychiatry, Institute of Psychiatry, DeCrespigny Park, Camberwell, London, U.K
| | | | | | | | | | | | | |
Collapse
|
38
|
Williams R, Edwards RA, Newburn GM, Mullen R, Menkes DB, Segkar C. A double-blind comparison of moclobemide and fluoxetine in the treatment of depressive disorders. Int Clin Psychopharmacol 1993; 7:155-8. [PMID: 8468437 DOI: 10.1097/00004850-199300730-00006] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Moclobemide and fluoxetine were tested in a six-week trial involving 122 patients with major depressive illness. Patients initially received moclobemide, 150 mg three times daily, or fluoxetine 20 mg/day, but during weeks 3, 4, 5 and 6 the doses could be altered, giving a range of 300-600 mg/day for moclobemide or 20-40 mg/day for fluoxetine. No dietary restrictions were imposed on the patients. The trial was completed by 49 patients receiving moclobemide, and 43 patients receiving fluoxetine. The efficacies of these two agents, as determined on the Hamilton Depression Rating Scale and from Clinical Global Assessments, were found not to differ significantly. The frequencies of occurrence of adverse reactions were also similar, but sedation, nausea and vomiting were reported more frequently with fluoxetine, and insomnia was experienced with moclobemide. Tolerance of both drugs was judged to be high.
Collapse
Affiliation(s)
- R Williams
- Psychiatric Unit, Memorial Hospital, Hastings, New Zealand
| | | | | | | | | | | |
Collapse
|
39
|
|
40
|
|
41
|
Mullen R, Hotopf M. Psychological outcome of abortion. Br J Psychiatry 1992; 161:424. [PMID: 1393326 DOI: 10.1192/bjp.161.3.424a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
42
|
Messer JW, Leslie JE, Houghtby GA, Peeler JT, Barnett JE, Appelt A, Boone E, Bryant H, Burroughs L, Coleman K, Cupery M, Cyr R, Dombrowski P, Donahue P, Farmer S, Ginn R, Grant H, Hawkins J, Heady J, Herbst D, Kelley W, Misup M, Morris L, Mullen R, Ondrus N, Payton C, Seiz D, Share R, Stern M, Williams R. Bacillus stearothermophilus Disc Assay for Detection of Inhibitors in Milk: Collaborative Study. J AOAC Int 1982. [DOI: 10.1093/jaoac/65.5.1208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
A 2-part (A and B) collaborative study was conducted on a Bacillus stearothermophilus paper disc (12.7 mm) method to detect residual inhibitors in milk. The 18 participating collaborators assayed raw milk samples spiked with a beta-lactam (penicillin G). Of the 18 collaborators, 14 participated in part A and 16 in part B. Part A demonstrated that either Antibiotic Medium No. 4 or PM Indicator Agar is suitable for use in the assay. The lowest concentration detectable, not significantly different from 100% at the α = 0.05 level, was 0.008 unit/mL with either medium. Part B demonstrated that the sensitivity of the method is equal to that of the current AOAC method (16.131- 16.136). The concentration of beta-lactam detected by 50% of the analysts was 0.003-0.005 unit/mL in this study, compared with 0.005 unit/mL reported in an earlier collaborative study on the current AOAC method. No false positive results were reported in part A or part B. All samples found positive by the confirmatory test in part B were correctly identified as a beta-lactam with commercial Penase discs. The lowest concentration detectable by the method, not significantly different from 100% at the α = 0.05 level, was 0.008 unit/mL. The method was adopted official first action.
Collapse
Affiliation(s)
- James W Messer
- Food and Drug Administration, Division of Microbiology, 1090 Tusculum Ave, Cincinnati, OH 45226
| | - James E Leslie
- Food and Drug Administration, Division of Microbiology, 1090 Tusculum Ave, Cincinnati, OH 45226
| | - Gary A Houghtby
- Food and Drug Administration, Division of Microbiology, 1090 Tusculum Ave, Cincinnati, OH 45226
| | - James T Peeler
- Food and Drug Administration, Division of Microbiology, 1090 Tusculum Ave, Cincinnati, OH 45226
| | - Jerald E Barnett
- Food and Drug Administration, Division of Microbiology, 1090 Tusculum Ave, Cincinnati, OH 45226
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Murthy GK, Peeler JT, Bone EE, Dickerson B, Johnson W, Maifarth P, Marchetti D, Mullen R, Pyett MM, Riggs T. Determination of Alkaline Phosphatase in Casein: Collaborative Study. J AOAC Int 1981. [DOI: 10.1093/jaoac/64.3.623] [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: 11/12/2022]
Abstract
Abstract
A collaborative study was made to determine alkaline phosphatase in casein samples by the rapid colorimetric test. Six to eight collaborators tested 10 unknown casein samples containing various amounts of residual phosphatase with and without the addition of magnesium acetate. Results indicated that magnesium acetate significantly increased phosphatase activity. The collaborators correctly analyzed 95% of the samples with the added magnesium acetate. The method has been adopted official first action.
Collapse
Affiliation(s)
- Gopala K Murthy
- Food and Drug Administration, Division of Microbiology, Cincinnati, OH 45226
| | - James T Peeler
- Food and Drug Administration, Division of Microbiology, Cincinnati, OH 45226
| | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Murthy GK, Peeler JT, Bone EE, Dickerson B, Johnson W, Maifarth P, Marchetti D, Mullen R, Pyett MM, Riggs T. Determination of alkaline phosphatase in casein: collaborative study. J Assoc Off Anal Chem 1981; 64:623-7. [PMID: 6894589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A collaborative study was made to determine alkaline phosphatase in casein samples by the rapid colorimetric test. Six to eight collaborators tested 10 unknown casein samples containing various amounts of residual phosphatase with and without the addition of magnesium acetate. Results indicated that magnesium acetate significantly increased phosphatase activity. The collaborators correctly analyzed 95% of the samples with the added magnesium acetate. The method has been adopted official first action.
Collapse
|
45
|
Keown PA, Essery GL, Stiller CR, Sinclair NR, Mullen R, Ulan RA. Mechanisms of immunosuppression by cyclosporin. Transplant Proc 1981; 13:386-9. [PMID: 6455795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|