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Shatalina E, Whitehurst TS, Onwordi EC, Gilbert BJ, Rizzo G, Whittington A, Mansur A, Tsukada H, Marques TR, Natesan S, Rabiner EA, Wall MB, Howes OD. Mitochondrial complex I density is associated with IQ and cognition in cognitively healthy adults: an in vivo [ 18F]BCPP-EF PET study. EJNMMI Res 2024; 14:41. [PMID: 38632153 PMCID: PMC11024075 DOI: 10.1186/s13550-024-01099-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 03/23/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Mitochondrial function plays a key role in regulating neurotransmission and may contribute to general intelligence. Mitochondrial complex I (MC-I) is the largest enzyme of the respiratory chain. Recently, it has become possible to measure MC-I distribution in vivo, using a novel positron emission tomography tracer [18F]BCPP-EF, thus, we set out to investigate the association between MC-I distribution and measures of cognitive function in the living healthy brain. RESULTS Analyses were performed in a voxel-wise manner and identified significant associations between [18F]BCPP-EF DVRCS-1 in the precentral gyrus and parietal lobes and WAIS-IV predicted IQ, WAIS-IV arithmetic and WAIS-IV symbol-digit substitution scores (voxel-wise Pearson's correlation coefficients transformed to Z-scores, thresholded at Z = 2.3 family-wise cluster correction at p < 0.05, n = 16). Arithmetic scores were associated with middle frontal and post-central gyri tracer uptake, symbol-digit substitution scores were associated with precentral gyrus tracer uptake. RAVLT recognition scores were associated with [18F]BCPP-EF DVRCS-1 in the middle frontal gyrus, post-central gyrus, occipital and parietal regions (n = 20). CONCLUSIONS Taken together, our findings support the theory that mitochondrial function may contribute to general intelligence and indicate that interindividual differences in MC-I should be a key consideration for research into mitochondrial dysfunction in conditions with cognitive impairment.
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Affiliation(s)
- Ekaterina Shatalina
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, Imperial College London, London, UK.
- Institute of Psychiatry, Psychology and Neuroscience (IoPPN), Kings College London, London, UK.
| | - Thomas S Whitehurst
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, Imperial College London, London, UK
- Institute of Psychiatry, Psychology and Neuroscience (IoPPN), Kings College London, London, UK
| | - Ellis Chika Onwordi
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, Imperial College London, London, UK
- Institute of Psychiatry, Psychology and Neuroscience (IoPPN), Kings College London, London, UK
- Centre for Psychiatry and Mental Health, Wolfson Institute of Population Health, Queen Mary University of London, London, UK
| | | | | | | | | | | | - Tiago Reis Marques
- Institute of Psychiatry, Psychology and Neuroscience (IoPPN), Kings College London, London, UK
- Faculty of Medicine, Imperial College London, London, UK
| | - Sridhar Natesan
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, Imperial College London, London, UK
- Institute of Psychiatry, Psychology and Neuroscience (IoPPN), Kings College London, London, UK
| | - Eugenii A Rabiner
- Institute of Psychiatry, Psychology and Neuroscience (IoPPN), Kings College London, London, UK
- Invicro, London, UK
| | - Matthew B Wall
- Faculty of Medicine, Imperial College London, London, UK
- Invicro, London, UK
- Clinical Psychopharmacology Unit, University College London, London, UK
| | - Oliver D Howes
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, Imperial College London, London, UK
- Institute of Psychiatry, Psychology and Neuroscience (IoPPN), Kings College London, London, UK
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Onwordi EC, Whitehurst T, Shatalina E, Mansur A, Arumuham A, Osugo M, Marques TR, Jauhar S, Gupta S, Mehrotra R, Rabiner EA, Gunn RN, Natesan S, Howes OD. Synaptic Terminal Density Early in the Course of Schizophrenia: An In Vivo UCB-J Positron Emission Tomographic Imaging Study of SV2A. Biol Psychiatry 2024; 95:639-646. [PMID: 37330164 PMCID: PMC10923626 DOI: 10.1016/j.biopsych.2023.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND The synaptic hypothesis is an influential theory of the pathoetiology of schizophrenia (SCZ), which is supported by the finding that there is lower uptake of the synaptic terminal density marker [11C]UCB-J in patients with chronic SCZ than in control participants. However, it is unclear whether these differences are present early in the illness. To address this, we investigated [11C]UCB-J volume of distribution (VT) in antipsychotic-naïve/free patients with SCZ who were recruited from first-episode services compared with healthy volunteers. METHODS Forty-two volunteers (SCZ n = 21, healthy volunteers n = 21) underwent [11C]UCB-J positron emission tomography to index [11C]UCB-J VT and distribution volume ratio in the anterior cingulate, frontal, and dorsolateral prefrontal cortices; the temporal, parietal and occipital lobes; and the hippocampus, thalamus, and amygdala. Symptom severity was assessed in the SCZ group using the Positive and Negative Syndrome Scale. RESULTS We found no significant effects of group on [11C]UCB-J VT or distribution volume ratio in most regions of interest (effect sizes from d = 0.0-0.7, p > .05), with two exceptions: we found lower distribution volume ratio in the temporal lobe (d = 0.7, uncorrected p < .05) and lower VT/fp in the anterior cingulate cortex in patients (d = 0.7, uncorrected p < .05). The Positive and Negative Syndrome Scale total score was negatively associated with [11C]UCB-J VT in the hippocampus in the SCZ group (r = -0.48, p = .03). CONCLUSIONS These findings indicate that large differences in synaptic terminal density are not present early in SCZ, although there may be more subtle effects. When taken together with previous evidence of lower [11C]UCB-J VT in patients with chronic illness, this may indicate synaptic density changes during the course of SCZ.
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Affiliation(s)
- Ellis Chika Onwordi
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Psychiatric Imaging Group, Medical Research Council, London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom; Centre for Psychiatry and Mental Health, Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom.
| | - Thomas Whitehurst
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Psychiatric Imaging Group, Medical Research Council, London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Ekaterina Shatalina
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Psychiatric Imaging Group, Medical Research Council, London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Ayla Mansur
- Department of Brain Sciences, Imperial College London, The Commonwealth Building, Hammersmith Hospital, London, United Kingdom; Invicro, Burlington Danes Building, London, United Kingdom
| | - Atheeshaan Arumuham
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Psychiatric Imaging Group, Medical Research Council, London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Martin Osugo
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Psychiatric Imaging Group, Medical Research Council, London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Tiago Reis Marques
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Psychiatric Imaging Group, Medical Research Council, London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Sameer Jauhar
- Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Susham Gupta
- Early Detection and Early Intervention, East London National Health Service Foundation Trust, London, United Kingdom
| | - Ravi Mehrotra
- Early Intervention in Psychosis Team, West Middlesex University Hospital, West London National Health Service Trust, Isleworth, London, United Kingdom
| | - Eugenii A Rabiner
- Invicro, Burlington Danes Building, London, United Kingdom; Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Roger N Gunn
- Department of Brain Sciences, Imperial College London, The Commonwealth Building, Hammersmith Hospital, London, United Kingdom; Invicro, Burlington Danes Building, London, United Kingdom
| | - Sridhar Natesan
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Psychiatric Imaging Group, Medical Research Council, London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Oliver D Howes
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Psychiatric Imaging Group, Medical Research Council, London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom.
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Elhakim T, Mansur A, Kondo J, Suraci C, Omar O, Bridge C, Fintelmann F, Wehrenberg-Klee E, Daye D. Abstract No. 212 Beyond MELD Score: Association of Sarcopenia with 90-Day Mortality Post Transjugular Intrahepatic Portosystemic Shunt (TIPS) Placement. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.272] [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: 02/27/2023] Open
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Mansur A, Gritskievich AA, Kostin AA, Kulchenko NG, Pospelova OM, Kalinycheva GE. Quality of life of patients with paraurethral cysts. Androl genit hir 2023. [DOI: 10.17650/2070-9781-2022-23-4-74-80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Background. Paraurethral cyst (PC) is often found in women aged 20–60 years. The prevalence of PC in the female population is 1–6 %. Since PC are often located in the distal urethra and lie close to the genitals of a woman, the symptoms associated with this disease cause women both physical and psychological suffering.Aim. To assess the quality of life of women with PC.Materials and methods. The study included female individuals (n = 106) aged 18–60 years, in whom PC were detected during examination of the perineal region. The quality of life of the patients was assessed on the basis of the health quality questionnaire – SF-36.Results. The average volume of the PC in the observed women was 3.2 ± 1.3 cm. In the observed women, the intensity of pain in the perineum was directly proportional to the duration of the disease: up to a year – 86.3 ± 4.1; from one to three years – 76.4 ± 8.3; more than three years – 64.4 ± 9.2 (p <0.05). In this regard, in this category of patients, indicators of physical activity, psychological health and role functioning due to emotional state were reduced. Repeatedor constant pain during urination and during sexual activity causes severe distress, which affects the quality of life of patients with cystic formations in the paraurethral region.Conclusion. In women with PC on the background of dyspareunia up to 3 years and more, physical and psychological aspects of health suffer.
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Affiliation(s)
- A. Mansur
- Рeoples’ Friendship University of Russia (RUDN University)
| | - A. A. Gritskievich
- Рeoples’ Friendship University of Russia (RUDN University); A.V. Vishnevsky National Medical Research Center of Surgery, Ministry of Health of Russia
| | - A. A. Kostin
- Рeoples’ Friendship University of Russia (RUDN University); National Medical Research Radiological Centre, Ministry of Health of Russia
| | | | - O. M. Pospelova
- Moscow Multidisciplinary Clinical Center “Kommunarka” of the Moscow Healthcare Department
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Mansur A, Smart A, Kempf A, Bitterman D, Patel C, Dyer M, Haas-Kogan D, Liu K. Clinical Outcomes of Transgender and Gender-Diverse Patients Receiving Radiation for Cancer Treatment. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Colleran R, Byrne RJ, Cradock A, O Ciardha D, McKeogh S, Wilson H, Mansur A, Bisset J, Cantwell G, Hannan M, Fitzgibbon M, O Donnell J, Rai H, Byrne RA. Prevalence of abnormalities on cardiac MRI in unselected patients after recovery from acute SARS-CoV-2 infection and correlation with markers of immunity and coagulation: the SETANTA study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.939] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Previous studies have reported ongoing cardiac inflammation as assessed by cardiac magnetic resonance imaging (CMR) in a significant proportion of patients several months after recovery from SARS-CoV-2 infection, many of whom had no or minimal symptoms at the time of infection.
Purpose
The aim of SETANTA was to investigate the prevalence of cardiac abnormalities by CMR in unselected patients in Ireland after acute SARS-CoV-2 infection and the correlation with immunological response and biomarkers of coagulation.
Methods
This was a prospective, observational, community-based study (clinicaltrials.gov identifier NCT04823182). Consecutive patients recovered from recent SARS-CoV-2 infection at 3 primary care sites were invited to participate. Key inclusion/exclusion criteria and outcomes of interest are shown in Figure 1.
Results
100 participants were enrolled (Feb-Sept 2021) at a median of 188 (IQR, 125, 246) days after positive SARS-CoV-2 swab. At index infection, 18% and 35% reported severe and moderate symptoms, respectively; 14% were hospitalized; 3% were admitted to intensive care for ventilatory support. At enrolment, 83% had ongoing symptoms. 85% had detectable SARS-CoV-2 antigens. CMR and laboratory findings are shown in Figure 1.
Conclusion
Among an unselected cohort of patients recovered from acute SARS-CoV2 infection, we report a low prevalence of cardiac abnormalities by CMR, despite a high prevalence of moderate/severe symptoms at presentation and a high prevalence of persistent symptoms. Correlation with biomarkers of immunity and coagulation will be available at ESC 2022.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): WomenAsOne
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Affiliation(s)
- R Colleran
- Mater Private Hospital , Dublin , Ireland
| | - R J Byrne
- Mater Private Hospital , Dublin , Ireland
| | - A Cradock
- University College Dublin, Department of Medicine , Dublin , Ireland
| | - D O Ciardha
- Trinity College Dublin, Institute of Population Health , Dublin , Ireland
| | - S McKeogh
- Solas Medical Centre , Dublin , Ireland
| | - H Wilson
- Mater Private Hospital , Dublin , Ireland
| | - A Mansur
- Mater Private Hospital , Dublin , Ireland
| | - J Bisset
- Mater Private Hospital , Dublin , Ireland
| | - G Cantwell
- Drs. Cantwell and Dr Spillane, Family and General Medicine , Dublin , Ireland
| | - M Hannan
- Mater Private Hospital, Department of Pathology , Dublin , Ireland
| | | | - J O Donnell
- Royal College of Surgeons in Ireland, Irish Centre for Vascular Biology , Dublin , Ireland
| | - H Rai
- Mater Private Hospital , Dublin , Ireland
| | - R A Byrne
- Mater Private Hospital , Dublin , Ireland
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Mansur A, Casey J, Joseph R, Shi J, Karimi E, Tao B, Granzier H, Gupta V. FP.01 Novel disease pathways and therapeutic developments in Kelch-related congenital nemaline myopathy. Neuromuscul Disord 2022. [DOI: 10.1016/j.nmd.2022.07.013] [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: 11/05/2022]
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Potter A, Senthil P, Mansur A, Mathey-Andrews C, Auchincloss H, Yang CF. OA05.06 Early Diagnosis of Lung Cancer Among Younger vs. Older Adults: Widening Disparities in the Era of Lung Cancer Screening. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Venkataraman AV, Mansur A, Rizzo G, Bishop C, Lewis Y, Kocagoncu E, Lingford-Hughes A, Huiban M, Passchier J, Rowe JB, Tsukada H, Brooks DJ, Martarello L, Comley RA, Chen L, Schwarz AJ, Hargreaves R, Gunn RN, Rabiner EA, Matthews PM. Widespread cell stress and mitochondrial dysfunction occur in patients with early Alzheimer's disease. Sci Transl Med 2022; 14:eabk1051. [PMID: 35976998 DOI: 10.1126/scitranslmed.abk1051] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Cell stress and impaired oxidative phosphorylation are central to mechanisms of synaptic loss and neurodegeneration in the cellular pathology of Alzheimer's disease (AD). In this study, we quantified the in vivo expression of the endoplasmic reticulum stress marker, sigma 1 receptor (S1R), using [11C]SA4503 positron emission tomography (PET), the mitochondrial complex I (MC1) with [18F]BCPP-EF, and the presynaptic vesicular protein SV2A with [11C]UCB-J in 12 patients with early AD and in 16 cognitively normal controls. We integrated these molecular measures with assessments of regional brain volumes and cerebral blood flow (CBF) measured with magnetic resonance imaging arterial spin labeling. Eight patients with AD were followed longitudinally to estimate the rate of change of the physiological and structural pathology markers with disease progression. The patients showed widespread increases in S1R (≤ 27%) and regional reduction in MC1 (≥ -28%) and SV2A (≥ -25%) radioligand binding, brain volume (≥ -23%), and CBF (≥ -26%). [18F]BCPP-EF PET MC1 binding (≥ -12%) and brain volumes (≥ -5%) showed progressive reductions over 12 to 18 months, suggesting that they both could be used as pharmacodynamic indicators in early-stage therapeutics trials. Associations of reduced MC1 and SV2A and increased S1R radioligand binding with reduced cognitive performance in AD, although exploratory, suggested a loss of metabolic functional reserve with disease. Our study thus provides in vivo evidence for widespread, clinically relevant cellular stress and bioenergetic abnormalities in early AD.
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Affiliation(s)
- Ashwin V Venkataraman
- Department of Brain Sciences, Imperial College London, London W12 0NN, UK.,UK Dementia Research Institute at Imperial College London, London W12 0NN, UK
| | | | - Gaia Rizzo
- Department of Brain Sciences, Imperial College London, London W12 0NN, UK.,Invicro LLC, London W12 0NN, UK
| | | | | | | | | | | | | | | | - Hideo Tsukada
- Hamamatsu Photonics, Hamakita, Hamamatsu, Shizuoka 4348601, Japan
| | - David J Brooks
- University of Newcastle upon Tyne, Newcastle NE2 4HH, UK.,Department of Clinical Medicine, Aarhus University, Aarhus 8200, Denmark
| | | | | | | | | | | | - Roger N Gunn
- Department of Brain Sciences, Imperial College London, London W12 0NN, UK.,Invicro LLC, London W12 0NN, UK
| | - Eugenii A Rabiner
- Invicro LLC, London W12 0NN, UK.,King's College London, London SE5 8AF, UK
| | - Paul M Matthews
- Department of Brain Sciences, Imperial College London, London W12 0NN, UK.,UK Dementia Research Institute at Imperial College London, London W12 0NN, UK
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Rabiner EA, Uz T, Mansur A, Brown T, Chen G, Wu J, Atienza J, Schwarz AJ, Yin W, Lewis Y, Searle GE, Dennison JMTJ, Passchier J, Gunn RN, Tauscher J. Endogenous dopamine release in the human brain as a pharmacodynamic biomarker: evaluation of the new GPR139 agonist TAK-041 with [ 11C]PHNO PET. Neuropsychopharmacology 2022; 47:1405-1412. [PMID: 34675381 PMCID: PMC9117280 DOI: 10.1038/s41386-021-01204-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 09/03/2021] [Accepted: 09/29/2021] [Indexed: 01/01/2023]
Abstract
The use of positron emission tomography (PET) in early-phase development of novel drugs targeting the central nervous system, is well established for the evaluation of brain penetration and target engagement. However, when novel targets are involved a suitable PET ligand is not always available. We demonstrate an alternative approach that evaluates the attenuation of amphetamine-induced synaptic dopamine release by a novel agonist of the orphan G-protein-coupled receptor GPR139 (TAK-041). GPR139 agonism is a novel candidate mechanism for the treatment of schizophrenia and other disorders associated with social and cognitive dysfunction. Ten healthy volunteers underwent [11C]PHNO PET at baseline, and twice after receiving an oral dose of d-amphetamine (0.5 mg/kg). One of the post-d-amphetamine scans for each subject was preceded by a single oral dose of TAK-041 (20 mg in five; 40 mg in the other five participants). D-amphetamine induced a significant decrease in [11C]PHNO binding potential relative to the non-displaceable component (BPND) in all regions examined (16-28%), consistent with increased synaptic dopamine release. Pre-treatment with TAK-041 significantly attenuated the d-amphetamine-induced reduction in BPND in the a priori defined regions (putamen and ventral striatum: 26% and 18%, respectively). The reduction in BPND was generally higher after the 40 mg than the 20 mg TAK-041 dose, with the difference between doses reaching statistical significance in the putamen. Our findings suggest that TAK-041 enters the human brain and interacts with GPR139 to affect endogenous dopamine release. [11C]PHNO PET is a practical method to detect the effects of novel drugs on the brain dopaminergic system in healthy volunteers, in the early stages of drug development.
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Affiliation(s)
- Eugenii A. Rabiner
- grid.498414.40000 0004 0548 3187Invicro, London, UK ,grid.13097.3c0000 0001 2322 6764Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - Tolga Uz
- grid.419849.90000 0004 0447 7762Takeda Pharmaceuticals Ltd, Cambridge, MA USA
| | - Ayla Mansur
- grid.498414.40000 0004 0548 3187Invicro, London, UK
| | - Terry Brown
- grid.419849.90000 0004 0447 7762Takeda Pharmaceuticals Ltd, Cambridge, MA USA
| | - Grace Chen
- grid.419849.90000 0004 0447 7762Takeda Pharmaceuticals Ltd, Cambridge, MA USA
| | - Jingtao Wu
- grid.419849.90000 0004 0447 7762Takeda Pharmaceuticals Ltd, Cambridge, MA USA
| | - Joy Atienza
- grid.419849.90000 0004 0447 7762Takeda Pharmaceuticals Ltd, Cambridge, MA USA
| | - Adam J. Schwarz
- grid.419849.90000 0004 0447 7762Takeda Pharmaceuticals Ltd, Cambridge, MA USA
| | - Wei Yin
- grid.419849.90000 0004 0447 7762Takeda Pharmaceuticals Ltd, Cambridge, MA USA
| | - Yvonne Lewis
- grid.498414.40000 0004 0548 3187Invicro, London, UK
| | | | | | | | | | - Johannes Tauscher
- grid.419849.90000 0004 0447 7762Takeda Pharmaceuticals Ltd, Cambridge, MA USA
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Mansur A, Potter A, Meyerhoff R, Lanuti M, Yang C. Impact of Mesothelioma Histologic Subtype and Use of Cancer-Directed Surgery on Outcomes in the National Cancer Database. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2021.10.168] [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: 10/19/2022]
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Clarke MTM, Mansur A, Rizzo G, Passchier J, Lewis Y, Evans KC, Chen L, Schwarz AJ, Takano A, Gunn RN, Cash DM, Rabiner EA, Rohrer JD. Synaptic PET imaging using [
11
C]UCB‐J in frontotemporal dementia. Alzheimers Dement 2021. [DOI: 10.1002/alz.054210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mica TM Clarke
- Dementia Research Centre, Queen Square Institute of Neurology, University College London London United Kingdom
- MINDMAPS Consortium London United Kingdom
| | - Ayla Mansur
- MINDMAPS Consortium London United Kingdom
- Invicro LLC London United Kingdom
- Division of Brain Sciences, Imperial College London London United Kingdom
| | - Gaia Rizzo
- MINDMAPS Consortium London United Kingdom
- Invicro LLC London United Kingdom
| | - Jan Passchier
- MINDMAPS Consortium London United Kingdom
- Invicro LLC London United Kingdom
| | - Yvonne Lewis
- MINDMAPS Consortium London United Kingdom
- Invicro LLC London United Kingdom
| | | | - Laigao Chen
- MINDMAPS Consortium London United Kingdom
- Pfizer Cambridge MA USA
| | - Adam J. Schwarz
- MINDMAPS Consortium London United Kingdom
- Takeda Pharmaceuticals Cambridge MA USA
| | - Akihiro Takano
- MINDMAPS Consortium London United Kingdom
- Takeda Pharmaceutical Company Limited Osaka Japan
| | - Roger N Gunn
- MINDMAPS Consortium London United Kingdom
- Invicro LLC London United Kingdom
- Division of Brain Sciences, Imperial College London London United Kingdom
| | - David M Cash
- Dementia Research Centre, Queen Square Institute of Neurology, University College London London United Kingdom
- MINDMAPS Consortium London United Kingdom
| | - Eugenii A. Rabiner
- MINDMAPS Consortium London United Kingdom
- Invicro LLC London United Kingdom
- Centre for Neuroimaging Sciences, IoPPN, King’s College London United Kingdom
| | - Jonathan D Rohrer
- Dementia Research Centre, Queen Square Institute of Neurology, University College London London United Kingdom
- MINDMAPS Consortium London United Kingdom
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Veronese M, Rizzo G, Belzunce M, Schubert J, Searle G, Whittington A, Mansur A, Dunn J, Reader A, Gunn RN. Reproducibility of findings in modern PET neuroimaging: insight from the NRM2018 grand challenge. J Cereb Blood Flow Metab 2021; 41:2778-2796. [PMID: 33993794 PMCID: PMC8504414 DOI: 10.1177/0271678x211015101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/10/2021] [Accepted: 04/03/2021] [Indexed: 11/16/2022]
Abstract
The reproducibility of findings is a compelling methodological problem that the neuroimaging community is facing these days. The lack of standardized pipelines for image processing, quantification and statistics plays a major role in the variability and interpretation of results, even when the same data are analysed. This problem is well-known in MRI studies, where the indisputable value of the method has been complicated by a number of studies that produce discrepant results. However, any research domain with complex data and flexible analytical procedures can experience a similar lack of reproducibility. In this paper we investigate this issue for brain PET imaging. During the 2018 NeuroReceptor Mapping conference, the brain PET community was challenged with a computational contest involving a simulated neurotransmitter release experiment. Fourteen international teams analysed the same imaging dataset, for which the ground-truth was known. Despite a plurality of methods, the solutions were consistent across participants, although not identical. These results should create awareness that the increased sharing of PET data alone will only be one component of enhancing confidence in neuroimaging results and that it will be important to complement this with full details of the analysis pipelines and procedures that have been used to quantify data.
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Affiliation(s)
- Mattia Veronese
- Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | | | - Martin Belzunce
- School of Biomedical Engineering and Imaging Sciences, St Thomas’ Hospital, King’s College London, London, UK
| | - Julia Schubert
- Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | | | | | - Ayla Mansur
- Invicro LLC, London, UK
- Department of Brain Sciences, Imperial College London, London, UK
| | - Joel Dunn
- School of Biomedical Engineering and Imaging Sciences, St Thomas’ Hospital, King’s College London, London, UK
- King's College London & Guy's and St. Thomas' PET Centre, London, UK
| | - Andrew Reader
- School of Biomedical Engineering and Imaging Sciences, St Thomas’ Hospital, King’s College London, London, UK
| | - Roger N Gunn
- Invicro LLC, London, UK
- Department of Brain Sciences, Imperial College London, London, UK
| | - and the Grand Challenge Participants#
- Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
- Invicro LLC, London, UK
- School of Biomedical Engineering and Imaging Sciences, St Thomas’ Hospital, King’s College London, London, UK
- Department of Brain Sciences, Imperial College London, London, UK
- King's College London & Guy's and St. Thomas' PET Centre, London, UK
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14
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Onwordi EC, Whitehurst T, Mansur A, Statton B, Berry A, Quinlan M, O'Regan DP, Rogdaki M, Marques TR, Rabiner EA, Gunn RN, Vernon AC, Natesan S, Howes OD. The relationship between synaptic density marker SV2A, glutamate and N-acetyl aspartate levels in healthy volunteers and schizophrenia: a multimodal PET and magnetic resonance spectroscopy brain imaging study. Transl Psychiatry 2021; 11:393. [PMID: 34282130 PMCID: PMC8290006 DOI: 10.1038/s41398-021-01515-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 06/22/2021] [Indexed: 02/07/2023] Open
Abstract
Glutamatergic excitotoxicity is hypothesised to underlie synaptic loss in schizophrenia pathogenesis, but it is unknown whether synaptic markers are related to glutamatergic function in vivo. Additionally, it has been proposed that N-acetyl aspartate (NAA) levels reflect neuronal integrity. Here, we investigated whether synaptic vesicle glycoprotein 2 A (SV2A) levels are related to glutamatergic markers and NAA in healthy volunteers (HV) and schizophrenia patients (SCZ). Forty volunteers (SCZ n = 18, HV n = 22) underwent [11C]UCB-J positron emission tomography and proton magnetic resonance spectroscopy (1H-MRS) imaging in the left hippocampus and anterior cingulate cortex (ACC) to index [11C]UCB-J distribution volume ratio (DVR), and creatine-scaled glutamate (Glu/Cr), glutamate and glutamine (Glx/Cr) and NAA (NAA/Cr). In healthy volunteers, but not patients, [11C]UCB-J DVR was significantly positively correlated with Glu/Cr, in both the hippocampus and ACC. Furthermore, in healthy volunteers, but not patients, [11C]UCB-J DVR was significantly positively correlated with Glx/Cr, in both the hippocampus and ACC. There were no significant relationships between [11C]UCB-J DVR and NAA/Cr in the hippocampus or ACC in healthy volunteers or patients. Therefore, an appreciable proportion of the brain 1H-MRS glutamatergic signal is related to synaptic density in healthy volunteers. This relationship is not seen in schizophrenia, which, taken with lower synaptic marker levels, is consistent with lower levels of glutamatergic terminals and/or a lower proportion of glutamatergic relative to GABAergic terminals in the ACC in schizophrenia.
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Affiliation(s)
- Ellis Chika Onwordi
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK.
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, W12 0NN, UK.
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK.
- South London and Maudsley NHS Foundation Trust, Camberwell, London, SE5 8AF, UK.
| | - Thomas Whitehurst
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, W12 0NN, UK
| | - Ayla Mansur
- Department of Brain Sciences, Imperial College London, The Commonwealth Building, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
- Invicro, Burlington Danes Building, Du Cane Road, London, W12 0NN, UK
| | - Ben Statton
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Alaine Berry
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Marina Quinlan
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Declan P O'Regan
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Maria Rogdaki
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
- South London and Maudsley NHS Foundation Trust, Camberwell, London, SE5 8AF, UK
| | - Tiago Reis Marques
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
- South London and Maudsley NHS Foundation Trust, Camberwell, London, SE5 8AF, UK
| | - Eugenii A Rabiner
- Invicro, Burlington Danes Building, Du Cane Road, London, W12 0NN, UK
- Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
| | - Roger N Gunn
- Department of Brain Sciences, Imperial College London, The Commonwealth Building, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
- Invicro, Burlington Danes Building, Du Cane Road, London, W12 0NN, UK
| | - Anthony C Vernon
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, Maurice Wohl Clinical Neuroscience Institute, King's College London, 5 Cutcombe Road, London, SE5 9RT, UK
- MRC Centre for Neurodevelopmental Disorders, King's College London, London, SE1 1UL, UK
| | - Sridhar Natesan
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
| | - Oliver D Howes
- MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK.
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, W12 0NN, UK.
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK.
- South London and Maudsley NHS Foundation Trust, Camberwell, London, SE5 8AF, UK.
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15
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Mansur A, Chandler J, Khanna S, Vinson M, Nguyen A. POS-814 INTRADIALYTIC RELATIVE BLOOD VOLUME MONITORING IN HEART FAILURE PATIENTS: RETROSPECTIVE DATA ANALYSIS. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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16
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Mansur A, Rabiner EA, Tsukada H, Comley RA, Lewis Y, Huiban M, Passchier J, Gunn RN. Test-retest variability and reference region-based quantification of 18F-BCPP-EF for imaging mitochondrial complex I in the human brain. J Cereb Blood Flow Metab 2021; 41:771-779. [PMID: 32501157 PMCID: PMC7983506 DOI: 10.1177/0271678x20928149] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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] [Indexed: 11/16/2022]
Abstract
Mitochondrial complex I (MC-I) is an essential regulator of brain bioenergetics and can be quantified in the brain using PET radioligand 18F-BCPP-EF. Here we evaluate the test-retest reproducibility of 18F-BCPP-EF in humans, and assess the use of a non-invasive quantification method (standardised uptake value ratio - SUVR). Thirty healthy volunteers had a 90-min dynamic 18F-BCPP-EF scan with arterial blood sampling, five of which received a second scan to be included in the test-retest analysis. Time-activity curves (TAC) were analysed using multilinear analysis 1 (MA1) and the two-tissue compartment model (2TC) to estimate volumes of distribution (VT). Regional SUVR-1 values were calculated from the 70 to 90-min TAC data using the centrum semiovale as a pseudo reference region, and compared to kinetic analysis-derived outcome measures. The mean absolute test-retest variability of VT ranged from 12% to 18% across regions. Both DVR-1and SUVR-1 had improved test-retest variability in the range 2%-7%. SUVR-1 was highly correlated with DVR-1 (r2 = 0.97, n = 30). In conclusion, 18F-BCPP-EF has suitable test-retest reproducibility and can be used to quantify MC-I in clinical studies.
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Affiliation(s)
- Ayla Mansur
- Invicro LLC, Boston, MA, USA.,Division of Brain Sciences, Imperial College London, UK.,MIND MAPS Consortium, London, UK
| | - Eugenii A Rabiner
- Invicro LLC, Boston, MA, USA.,MIND MAPS Consortium, London, UK.,Institute of Psychiatry, King's College London, London, UK
| | - Hideo Tsukada
- MIND MAPS Consortium, London, UK.,Hamamatsu Photonics, Japan
| | - Robert A Comley
- MIND MAPS Consortium, London, UK.,Abbvie, North Chicago, IL, USA
| | - Yvonne Lewis
- Invicro LLC, Boston, MA, USA.,MIND MAPS Consortium, London, UK
| | - Mickael Huiban
- Invicro LLC, Boston, MA, USA.,MIND MAPS Consortium, London, UK
| | - Jan Passchier
- Invicro LLC, Boston, MA, USA.,Division of Brain Sciences, Imperial College London, UK.,MIND MAPS Consortium, London, UK
| | - Roger N Gunn
- Invicro LLC, Boston, MA, USA.,Division of Brain Sciences, Imperial College London, UK.,MIND MAPS Consortium, London, UK
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17
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Wilson H, Pagano G, de Natale ER, Mansur A, Caminiti SP, Polychronis S, Middleton LT, Price G, Schmidt KF, Gunn RN, Rabiner EA, Politis M. Mitochondrial Complex 1, Sigma 1, and Synaptic Vesicle 2A in Early Drug-Naive Parkinson's Disease. Mov Disord 2020; 35:1416-1427. [PMID: 32347983 DOI: 10.1002/mds.28064] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [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: 01/07/2020] [Revised: 03/27/2020] [Accepted: 03/30/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Dysfunction of mitochondrial energy generation may contribute to neurodegeneration, leading to synaptic loss in Parkinson's disease (PD). The objective of this study was to find cross-sectional and longitudinal changes in PET markers of synaptic vesicle protein 2A, sigma 1 receptor, and mitochondrial complex 1 in drug-naive PD patients. METHODS Twelve early drug-naive PD patients and 16 healthy controls underwent a 3-Tesla MRI and PET imaging to quantify volume of distribution of [11 C]UCB-J, [11 C]SA-4503, and [18 F]BCPP-EF for synaptic vesicle protein 2A, sigma 1 receptor, and mitochondrial complex 1, respectively. Nine PD patients completed approximately 1-year follow-up assessments. RESULTS Reduced [11 C]UCB-J volume of distribution in the caudate, putamen, thalamus, brain stem, and dorsal raphe and across cortical regions was observed in drug-naive PD patients compared with healthy controls. [11 C]UCB-J volume of distribution was reduced in the locus coeruleus and substantia nigra but did not reach statistical significance. No significant differences were found in [11 C]SA-4503 and [18 F]BCPP-EF volume of distribution in PD compared with healthy controls. Lower brain stem [11 C]UCB-J volume of distribution correlated with Movement Disorder Society Unified Parkinson's Disease Rating Scale part III and total scores. No significant longitudinal changes were identified in PD patients at follow-up compared with baseline. CONCLUSIONS Our findings represent the first in vivo evidence of mitochondrial, endoplasmic reticulum, and synaptic dysfunction in drug-naive PD patients. Synaptic dysfunction likely occurs early in disease pathophysiology and has relevance to symptomatology. Mitochondrial complex 1 and sigma 1 receptor pathology warrants further investigations in PD. Studies in larger cohorts with longer follow-up will determine the validity of these PET markers to track disease progression. © 2020 The Authors. Movement Disorders published by Wiley Periodicals, Inc. on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Heather Wilson
- Neurodegeneration Imaging Group, University of Exeter Medical School, London, UK.,Neurodegeneration Imaging Group, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Gennaro Pagano
- Neurodegeneration Imaging Group, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Edoardo Rosario de Natale
- Neurodegeneration Imaging Group, University of Exeter Medical School, London, UK.,Neurodegeneration Imaging Group, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Ayla Mansur
- Invicro, Centre for Imaging Sciences, Hammersmith Hospital, London, UK.,Division of Brain Sciences, Department of Medicine, Imperial College London, UK
| | - Silvia Paola Caminiti
- Neurodegeneration Imaging Group, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Sotirios Polychronis
- Neurodegeneration Imaging Group, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Lefkos T Middleton
- School of Public Health, Imperial College London, UK.,Public Health Directorate, Imperial College NHS Healthcare Trust, London, UK.,MINDMAPS Consortium, London, UK
| | - Geraint Price
- School of Public Health, Imperial College London, UK.,MINDMAPS Consortium, London, UK
| | | | - Roger N Gunn
- Invicro, Centre for Imaging Sciences, Hammersmith Hospital, London, UK.,Division of Brain Sciences, Department of Medicine, Imperial College London, UK.,MINDMAPS Consortium, London, UK
| | - Eugenii A Rabiner
- Invicro, Centre for Imaging Sciences, Hammersmith Hospital, London, UK.,MINDMAPS Consortium, London, UK.,Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Marios Politis
- Neurodegeneration Imaging Group, University of Exeter Medical School, London, UK.,Neurodegeneration Imaging Group, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.,MINDMAPS Consortium, London, UK
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18
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Zartash H, Saleem S, Rasool Z, Mahmood A, Hameed K, Ahmad Sheikh S, Mansur A. SAT-193 AKI IN POST CABG CHRONIC KIDNEY DISEASE(CKD) PATIENTS: INCIDENCE AND RISK FACTORS. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.206] [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: 10/24/2022] Open
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19
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SALEEM S, Abid H, Rasool Z, Sarwar S, Hameed K, Ahmad Sheikh S, Mansur A. SAT-115 PROLONGED ICU STAY IN POST CABG CKD PATIENTS AND POST-OPERATIVE QUALITY OF LIFE (QOL) AT 6 MONTHS. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.123] [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: 10/24/2022] Open
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20
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Onwordi EC, Halff EF, Whitehurst T, Mansur A, Cotel MC, Wells L, Creeney H, Bonsall D, Rogdaki M, Shatalina E, Reis Marques T, Rabiner EA, Gunn RN, Natesan S, Vernon AC, Howes OD. Synaptic density marker SV2A is reduced in schizophrenia patients and unaffected by antipsychotics in rats. Nat Commun 2020; 11:246. [PMID: 31937764 PMCID: PMC6959348 DOI: 10.1038/s41467-019-14122-0] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [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: 06/27/2019] [Accepted: 12/09/2019] [Indexed: 12/15/2022] Open
Abstract
Synaptic dysfunction is hypothesised to play a key role in schizophrenia pathogenesis, but this has not been tested directly in vivo. Here, we investigated synaptic vesicle glycoprotein 2A (SV2A) levels and their relationship to symptoms and structural brain measures using [11C]UCB-J positron emission tomography in 18 patients with schizophrenia and 18 controls. We found significant group and group-by-region interaction effects on volume of distribution (VT). [11C]UCB-J VT was significantly lower in the frontal and anterior cingulate cortices in schizophrenia with large effect sizes (Cohen's d = 0.8-0.9), but there was no significant difference in the hippocampus. We also investigated the effects of antipsychotic drug administration on SV2A levels in Sprague-Dawley rats using western blotting, [3H]UCB-J autoradiography and immunostaining with confocal microscopy, finding no significant effects on any measure. These findings indicate that there are lower synaptic terminal protein levels in schizophrenia in vivo and that antipsychotic drug exposure is unlikely to account for them.
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Affiliation(s)
- Ellis Chika Onwordi
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, London, W12 0NN, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
- South London and Maudsley NHS Foundation Trust, Camberwell, London, SE5 8AF, UK
| | - Els F Halff
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
| | - Thomas Whitehurst
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, London, W12 0NN, UK
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
- South London and Maudsley NHS Foundation Trust, Camberwell, London, SE5 8AF, UK
| | - Ayla Mansur
- Division of Brain Sciences, Imperial College London, The Commonwealth Building, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - Marie-Caroline Cotel
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, Maurice Wohl Clinical Neuroscience Institute, King's College London, 5 Cutcombe Road, London, SE5 9RT, UK
| | - Lisa Wells
- Invicro Imaging Services, Burlington Danes Building, Du Cane Road, London, W12 0NN, UK
| | - Hannah Creeney
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, Maurice Wohl Clinical Neuroscience Institute, King's College London, 5 Cutcombe Road, London, SE5 9RT, UK
| | - David Bonsall
- Invicro Imaging Services, Burlington Danes Building, Du Cane Road, London, W12 0NN, UK
| | - Maria Rogdaki
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, London, W12 0NN, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
- South London and Maudsley NHS Foundation Trust, Camberwell, London, SE5 8AF, UK
| | - Ekaterina Shatalina
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, London, W12 0NN, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, W12 0NN, UK
| | - Tiago Reis Marques
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, London, W12 0NN, UK
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
- South London and Maudsley NHS Foundation Trust, Camberwell, London, SE5 8AF, UK
| | - Eugenii A Rabiner
- Invicro Imaging Services, Burlington Danes Building, Du Cane Road, London, W12 0NN, UK
- Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
| | - Roger N Gunn
- Division of Brain Sciences, Imperial College London, The Commonwealth Building, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
- Invicro Imaging Services, Burlington Danes Building, Du Cane Road, London, W12 0NN, UK
| | - Sridhar Natesan
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, London, W12 0NN, UK
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK
| | - Anthony C Vernon
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, Maurice Wohl Clinical Neuroscience Institute, King's College London, 5 Cutcombe Road, London, SE5 9RT, UK
- MRC Centre for Neurodevelopmental Disorders, King's College London, London, SE1 1UL, UK
| | - Oliver D Howes
- Psychiatric Imaging Group, MRC London Institute of Medical Sciences, Hammersmith Hospital, London, W12 0NN, UK.
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, W12 0NN, UK.
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK.
- South London and Maudsley NHS Foundation Trust, Camberwell, London, SE5 8AF, UK.
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21
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Mansur A, Rabiner EA, Comley RA, Lewis Y, Middleton LT, Huiban M, Passchier J, Tsukada H, Gunn RN. Characterization of 3 PET Tracers for Quantification of Mitochondrial and Synaptic Function in Healthy Human Brain: 18F-BCPP-EF, 11C-SA-4503, and 11C-UCB-J. J Nucl Med 2019; 61:96-103. [PMID: 31324712 DOI: 10.2967/jnumed.119.228080] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [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: 03/05/2019] [Accepted: 06/04/2019] [Indexed: 11/16/2022] Open
Abstract
Mitochondrial complex 1 is involved in maintaining brain bioenergetics; σ-1 receptor responds to neuronal stress; and synaptic vesicle protein 2A reflects synaptic integrity. Expression of each of these proteins is altered in neurodegenerative diseases. Here, we characterize the kinetic behavior of 3 PET radioligands-18F-BCPP-EF, 11C-SA-4503, and 11C-UCB-J-for the measurement of mitochondrial complex 1, σ-1 receptor, and synaptic vesicle protein 2A, respectively, and determine appropriate analysis workflows for their application in future studies of the in vivo molecular pathology of these diseases. Methods: Twelve human subjects underwent dynamic PET scans with each radioligand, including associated arterial blood sampling. A range of kinetic models was investigated to identify an optimal kinetic analysis method for each radioligand and a suitable acquisition duration. Results: All 3 radioligands readily entered the brain and yielded heterogeneous uptake consistent with the known distribution of the targets. The optimal models determined for the regional estimates of volume of distribution were multilinear analysis 1 (MA1) and the 2-tissue-compartment model for 18F-BCPP-EF, MA1 for 11C-SA-4503, and both MA1 and the 1-tissue-compartment model for 11C-UCB-J. Acquisition times of 70, 80, and 60 min for 18F-BCPP-EF, 11C-SA-4503, 11C-UCB-J, respectively, provided good estimates of regional volume of distribution values. An effect of age was observed on 18F-BCPP-EF and 11C-UCB-J signal in the caudate. Conclusion: These ligands can be assessed for their potential to stratify patients or monitor the progression of molecular neuropathology in neurodegenerative diseases.
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Affiliation(s)
- Ayla Mansur
- Invicro LLC, London, United Kingdom .,Division of Brain Sciences, Imperial College London, London, United Kingdom
| | - Eugenii A Rabiner
- Invicro LLC, London, United Kingdom.,King's College London, London, United Kingdom
| | | | | | - Lefkos T Middleton
- Neuroepidemiology and Ageing Research Unit, Imperial College London, London, United Kingdom; and
| | | | - Jan Passchier
- Invicro LLC, London, United Kingdom.,Division of Brain Sciences, Imperial College London, London, United Kingdom
| | - Hideo Tsukada
- Hamamatsu Photonics, Hamamatsu City, Shizuoka, Japan
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22
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Venkataraman AV, Mansur A, Lewis Y, Kocagoncu E, Lingford-Hughes A, Huiban M, Passchier J, Rowe JB, Tsukada H, Brooks DJ, Gunn RN, Matthews PM, Rabiner EA, Consortium M. P2-366: QUANTIFYING MITOCHONDRIAL AND SYNAPTIC FUNCTION IN ALZHEIMER'S DISEASE USING [ 18
F]BCPP-EF, [ 11
C]SA4503 AND [ 11
C]UCB-J PET IMAGING. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.2773] [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: 10/25/2022]
Affiliation(s)
- Ashwin V. Venkataraman
- Division of Brain Sciences; Imperial College London; London United Kingdom
- UKDRI at Imperial College London; London United Kingdom
- MINDMAPS Consortium; London United Kingdom
| | - Ayla Mansur
- Division of Brain Sciences; Imperial College London; London United Kingdom
- MINDMAPS Consortium; London United Kingdom
- Invicro LLC; London United Kingdom
| | - Yvonne Lewis
- MINDMAPS Consortium; London United Kingdom
- Invicro LLC; London United Kingdom
| | | | | | - Mickael Huiban
- MINDMAPS Consortium; London United Kingdom
- Invicro LLC; London United Kingdom
| | - Jan Passchier
- MINDMAPS Consortium; London United Kingdom
- Invicro LLC; London United Kingdom
| | - James B. Rowe
- MINDMAPS Consortium; London United Kingdom
- University of Cambridge; Cambridge United Kingdom
| | - Hideo Tsukada
- MINDMAPS Consortium; London United Kingdom
- Hamamatsu Photonics; Hamamatsu Japan
| | - David J. Brooks
- MINDMAPS Consortium; London United Kingdom
- Newcastle University; Newcastle upon Tyne United Kingdom
| | - Roger N. Gunn
- MINDMAPS Consortium; London United Kingdom
- Invicro LLC; London United Kingdom
- Imperial College London; London United Kingdom
| | - Paul M. Matthews
- Division of Brain Sciences; Imperial College London; London United Kingdom
- UKDRI at Imperial College London; London United Kingdom
- MINDMAPS Consortium; London United Kingdom
| | - Eugenii A. Rabiner
- MINDMAPS Consortium; London United Kingdom
- Invicro LLC; London United Kingdom
- Centre for Neuroimaging Sciences, IoPPN; King's College; London United Kingdom
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Mansur A, Newbould R, Searle GE, Redstone C, Gunn RN, Hallett WA. PET-MR Attenuation Correction in Dynamic Brain PET Using [11C]Cimbi-36: A Direct Comparison With PET-CT. IEEE Trans Radiat Plasma Med Sci 2018. [DOI: 10.1109/trpms.2018.2852558] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Swaminathan N, Mansur A. P130 Prevalence and clinical outcomes of fungal sensitive asthma in a severe asthma population. Thorax 2016. [DOI: 10.1136/thoraxjnl-2016-209333.273] [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: 11/03/2022]
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Davies SE, Cachada N, Turner A, Wharton S, Mansur A. M9 A high prevalence of obstructive sleep apnoea (OSA) in the severe/difficult to treat asthma (SDTA) population. Thorax 2016. [DOI: 10.1136/thoraxjnl-2016-209333.451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Sullivan J, O’Shea K, Mansur A. P78 Study of mortality in severe and difficult to treat asthma. Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ross D, Hinz J, Mansur A, Mielck F, Roessler M, Quintel M, Bauer M. Erratum zu: Implementierung eines neuen Schockraumprotokolls an einem Universitätsklinikum in Deutschland. Anaesthesist 2015; 64:389. [DOI: 10.1007/s00101-015-0038-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ross D, Hinz J, Mansur A, Mielck F, Roessler M, Quintel M, Bauer M. Implementierung eines neuen Schockraumprotokolls an einem Universitätsklinikum in Deutschland. Anaesthesist 2015; 64:208-17. [DOI: 10.1007/s00101-015-0011-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cusworth K, Lynch C, Ejiofor S, Sathyamurthy R, Super P, Noble C, Mansur A. P241 Anti-Reflux Surgery Conveys a Long Term Improvement in Respiratory Symptoms in Asthma and Chronic Cough. Thorax 2014. [DOI: 10.1136/thoraxjnl-2014-206260.369] [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: 11/03/2022]
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Lynch CA, Ejiofor S, Sathyamurthy R, Mansur A. S33 Does anti-reflux surgery symptomatically improve extra-oesophageal symptoms and quality of life in gastro-oesophageal reflux disease. Thorax 2013. [DOI: 10.1136/thoraxjnl-2013-204457.40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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McManaman JL, Bales ES, Orlicky DJ, Jackman M, MacLean PS, Cain S, Crunk AE, Mansur A, Graham CE, Bowman TA, Greenberg AS. Perilipin-2-null mice are protected against diet-induced obesity, adipose inflammation, and fatty liver disease. J Lipid Res 2013; 54:1346-59. [PMID: 23402988 DOI: 10.1194/jlr.m035063] [Citation(s) in RCA: 158] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The cytoplasmic lipid droplet (CLD) protein perilipin-2 (Plin2) is expressed in multiple nonadipose tissues, where it is thought to play a role in regulating their lipid storage properties. However, the extent to which Plin2 functions in nutrient utilization and metabolism, or how it influences the consequences of over-feeding, remains unclear. In this study, we demonstrate that the absence of Plin2 prevents high-fat diet(HFD)-induced obesity in male and female mice. This response is associated with increased formation of subcutaneous beige adipocyte cells with uncoupling protein 1 expression, and amelioration of inflammatory foci formation in white adipose tissue and steatosis in the liver. Experiments demonstrate that Plin2 loss results in reduced energy intake and increased physical activity in response to HFD feeding. Our study provides the first evidence that Plin2 contributes to HFD-induced obesity by modulating food intake, and that its absence prevents obesity-associated adipose tissue inflammatory foci and liver steatosis.
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Affiliation(s)
- James L McManaman
- Division of Basic Reproductive Sciences, University of Colorado School of Medicine, Aurora, CO, USA.
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O'Neill S, Sweeney J, Neill CO, Brightling C, Menzies-Gow A, Niven R, Chaudrai R, Bucknall C, Mansur A, Patterson C. S64 The Cost of Refractory Asthma in the UK - a Preliminary Analysis. Thorax 2012. [DOI: 10.1136/thoraxjnl-2012-202678.070] [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: 11/04/2022]
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Ejiofor S, Brebner J, Barker B, Mansur A. P156 Outcome and Experience of Laproscopic Nissens Fundoplication in Adult Patients with Severe Asthma and Cough Who Have Gastroesophageal Reflux: Abstract P156 Table 1. Thorax 2012. [DOI: 10.1136/thoraxjnl-2012-202678.217] [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: 11/04/2022]
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Rajendran B, Young H, Tidswell T, Mansur A, Robb S, Pitt M. G.P.73 Abnormal neuromuscular transmission in infants with Prader–Willi syndrome. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Greenberg AS, Kraemer FB, Soni KG, Jedrychowski MP, Yan QW, Graham CE, Bowman TA, Mansur A. Lipid droplet meets a mitochondrial protein to regulate adipocyte lipolysis. EMBO J 2011; 30:4337-9. [PMID: 22048333 DOI: 10.1038/emboj.2011.371] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Andrew S Greenberg
- Obesity and Metabolism Laboratory, JM-USDA HNRCA, Tufts University, Boston, MA, USA.
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Sathyamurthy R, Manney S, Wood A, Perkins G, Webster C, Krishna M, Mansur A. P14 Does Vitamin D Axis have an effect on the severity of Asthma? Thorax 2010. [DOI: 10.1136/thx.2010.150961.14] [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: 11/03/2022]
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Timerman S, Quilici A, Gonzalez M, Mansur A, Marques F, Ramires J. Brazilian soccer heartsaver programme. Resuscitation 2006. [DOI: 10.1016/j.resuscitation.2006.06.085] [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: 10/24/2022]
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Timerman S, Alves P, Gonzalez M, Mansur A, Ramires J. Crit Care 2004; 8:P294. [DOI: 10.1186/cc2761] [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: 11/10/2022] Open
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Timerman S, Alves P, Vieira S, Mansur A, Ramires J. Crit Care 2004; 8:P295. [DOI: 10.1186/cc2762] [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: 11/10/2022] Open
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Dixit M, Mansur A, Dixit N, Gilman J, Santarina L, Glicklich D. The role of ACE gene polymorphism in rapidity of progression of focal segmental glomerulosclerosis. J Postgrad Med 2002; 48:266-9; discussion 269. [PMID: 12571380] [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: 02/28/2023] Open
Abstract
BACKGROUND The insertion/deletion (I/D) polymorphism of angiotensin converting enzyme (ACE) gene has been associated with progression of renal diseases. AIMS We investigated its role in the rate of progression of focal segmental glomerulosclerosis (FSGS). METHODS Forty-seven patients with end-stage renal disease (ESRD) due to FSGS were evaluated. RESULTS The distribution of ACE genotype was II-25.5%, ID-55.5%, and DD-19%, as compared to 40 controls with genotype of 7.5%, 60%, and 32.5%, respectively (p= NS). In African Americans (AA) the gene frequencies among patients and controls were I-43%, D-57% vs I-36%, D-64%, respectively. This was different than the gene frequencies in White/Hispanic (W/H) patients I-61.5%, D-38.5% vs I-38.6%, D-61.4%, in controls (P < 0.05). In 22 patients with rapid progression (RP) of FSGS to ESRD the genotype distribution was II-18%, ID -64%, and DD-18%. In 25 patients with FSGS who progressed slowly (SP) the genotype was similar (II-32%, ID-48% and DD-20%, P >0.05). With respect to rate of progression, D allele frequency was similar in AA patients (RP 64% vs SP 50%) and W/H patients (RP 36% vs SP 40%). CONCLUSION Our study reveals no association between the I/D polymorphism of the ACE gene and the presence of and rapidity progression of FSGS.
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Affiliation(s)
- M Dixit
- Department of Paediatrics, Steele Memorial Children's Research Centre, University of Arizona, Tucson AZ 85724, USA.
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Greca FH, de Paula JB, Biondo-Simões ML, da Costa FD, da Silva AP, Time S, Mansur A. The influence of differing pore sizes on the biocompatibility of two polypropylene meshes in the repair of abdominal defects. Experimental study in dogs. Hernia 2001; 5:59-64. [PMID: 11505649 DOI: 10.1007/s100290100001] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.4] [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: 11/29/2022]
Abstract
Two types of monofilament polypropylene meshes of markedly different construction, configuration and pore size were compared and used to repair full-thickness muscle defects in the abdominal wall of 22 mongrel dogs to assess their biocompatibility with host tissues. The defects were repaired with Prolene (Ethicon) woven mesh (pore size = 164 x 96 microns) and with an experimental, extruded mesh called T mesh (pore size = 3 mm x 4 mm). On the 30th postoperative day, the animals were sacrificed, and the segments of the abdominal wall containing the implanted meshes were excised. Although the Prolene mesh had greater tensile strength before implantation, 30 days after implantation, the T mesh showed similar tensile strength to Prolene mesh. The collagen densitometry showed a significant increase of total and mature collagen type I deposition in the T mesh. This suggests that the increased mature collagen type I deposition significantly increases the tensile strength of the reinforced mesh tissue and that the larger pore in the T mesh contributed to this finding by allowing increasing fibber orientation within the pores as a result of in vivo tension.
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Affiliation(s)
- F H Greca
- Department of Experimental Surgery, Pontifical Catholic University of Paraná, Brazil.
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Affiliation(s)
- A Mansur
- Department of Medicine, Pediatrics and Pathology, Nassau County Medical Center, East Meadow, New York, USA
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Ramires FJ, Mansur A, Coelho O, Maranhão M, Gruppi CJ, Mady C, Ramires JA. Effect of spironolactone on ventricular arrhythmias in congestive heart failure secondary to idiopathic dilated or to ischemic cardiomyopathy. Am J Cardiol 2000; 85:1207-11. [PMID: 10802002 DOI: 10.1016/s0002-9149(00)00729-3] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.5] [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: 10/18/2022]
Abstract
Epidemiologic studies have shown an important increase in the high mortality of patients with congestive heart failure (CHF) despite optimal medical management. Ventricular arrhythmia was recognized as the most common cause of death in this population. Electrolyte imbalance, myocardial fibrosis, left ventricular dysfunction, and inappropriate neurohumoral activation are presumed responsible for sudden cardiac death. In this study, we focused on the deleterious effects of the overproduction of aldosterone that occurs in patients with CHF. Secondary hyperaldersteronism can be part of several factors thought to be responsible for sudden cardiac death. We randomized 35 patients (32 men, aged 48 +/- 9 years) with systolic dysfunction (ejection fraction 33 +/- 5%) and New York Heart Association class III CHF secondary to dilated or ischemic cardiomyopathy into 2 groups. The treatment group received spironolactone, an aldosterone receptor antagonist, along with standard medical management using furosemide, angiotensin-converting enzyme inhibitors, and digoxin. The control group received only the standard medical treatment. Holter monitoring was used to assess the severity of ventricular arrhythmia. After 20 weeks, patients who received spironolactone had a reduced hourly frequency of ventricular premature complexes (VPCs) (65 +/- 18 VPCs/hour at week 0 and 17 +/- 9 VPCs/hour at week 16) and episodes of nonsustained ventricular tachycardia (VT) (3.0 +/- 0.8 episodes of VT/24-hour period at week 0, and 0.6 +/- 0.3 VT/24-hour period at week 16). During monitored treadmill exercise, a significant improvement in ventricular arrhythmia was found in the group receiving spironolactone (39 +/- 10 VPCs at week 0, and 6 +/- 2 VPCs at week 16). These findings suggest that aldosterone may contribute to the incidence of ventricular arrhythmia in patients with CHF, and spironolactone helps reduce this complication.
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Affiliation(s)
- F J Ramires
- InCor-Heart Institute, University of São Paulo-Medical School, São Paulo-SP, Brazil
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Abstract
Nitric oxide (NO) is increased by gp120 in astrocytes and in monocyte-derived macrophages. Of the gp120 fragments (F1: amino acid 254-274, F2: amino acid 315-329, F3: amino acid 421-438), F1 has been shown to increase NO in astrocytes and gp120 also primes CD4+ T cells for apoptosis. Peripheral blood mononuclear cells (PBMCs) at 10(6)/ml (N = 10) were incubated at 24 and 72 hours in RPMI, 10% CO2 with low doses (100 nM) gp120 and high doses (400 nM) of the smaller fragments. Supernatants were collected and assayed for the relative contribution of gp120 and its fragments on NO production at both time points. Apoptosis was detected by in situ hybridization with and without 1 microgram/ml LPS as superantigen at 72 hours. The major contribution to apoptosis and NO production was from F1. At 24 hours F1 had a 1.9-fold increase from control, whereas F2 and F3 had 1.25- and 1.35-fold increases. At 72 hours both F1 and F2 had a 1.5-fold increase and F3 had a 1.33 increase. Thus, F1 contributed significantly to NO production at 24 hours. Both F1 and F2 had significant contributions to NO production at 72 hours. F1 had the most contribution to apoptosis both with and without lipopolysaccharide (LPS). These findings may contribute to further understanding the mechanism of HIV-induced apoptosis.
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Affiliation(s)
- A Mansur
- Department of Pathology, Nassau County Medical Center, East Meadow, New York 11554, USA
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Bocchi EA, Bellotti G, Moreira LF, Bacal F, de Moraes AV, Fiorelli A, Mansur A, Stolf N, Jatene A, Pileggi F. Mid-term results of heart transplantation, cardiomyoplasty, and medical treatment of refractory heart failure caused by idiopathic dilated cardiomyopathy. J Heart Lung Transplant 1996; 15:736-45. [PMID: 8820791] [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: 02/02/2023] Open
Abstract
BACKGROUND Heart transplantation is the surgical procedure of choice for treatment of refractory heart failure. However, it benefits a small number of patients because of the limited number of donors and selection criteria of recipients. Cardiomyoplasty is an alternative surgical procedure for heart failure. The aim of this investigation was to report our experience with heart transplantation, cardiomyoplasty, and clinical treatment of heart failure caused by idiopathic dilated cardiomyopathy. METHODS Ninety patients with refractory heart failure caused by idiopathic dilated cardiomyopathy were observed from May 1988 to March 1993. The patients had New York Heart Association functional class III or IV symptoms. The patients were divided in three groups according to the treatment received: heart transplantation (33 patients), cardiomyoplasty (25 patients), or medical treatment (32 patients). We studied the event-free curve, the New York Heart Association functional class, the left ventricular ejection fraction, and the morbidity of the groups in the follow-up of 19 +/- 16 months. We considered as an event death or crossover to another group because of severe symptoms. RESULTS The event-free rate in the cardiomyoplasty group was 92%, 88%, 79%, 74%, and 62% at 3, 9, 12, 18, and 24 months of follow-up, respectively. The event-free rate after heart transplantation was 82%, 78%, 82%, 75%, and 69% at 3, 9, 12, 18, and 24 months, respectively. The event-free rate in the medical treatment group was 78%, 65%, 61%, 48%, and 48% at 3, 9, 12, 18, and 24 months, respectively. All surviving patients in the heart transplantation group had functional class I symptoms. After cardiomyoplasty 90% of surviving patients had class I or II symptoms and 10% had class III symptoms. However, in the medical treatment group 27% of surviving patients had class I or II symptoms and 67% had class III or IV symptoms. In the cardiomyoplasty group left ventricular ejection fraction increased from 20% +/- 3% to 24.4% +/- 6.3% at 6 months (p < 0.05). In the heart transplantation group the left ventricular ejection fraction normalized, and the mean value of the left ventricular ejection fraction did not change in the medical treatment group. The need for endomyocardial biopsy and the incidence of rejection and infection were characteristics of the heart transplantation group. CONCLUSIONS In properly selected patients, cardiomyoplasty and heart transplantation seem to be associated with improvement in survival and functional class at mid-term follow-up. Heart transplantation was more effective than cardiomyoplasty for functional class improvement.
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Affiliation(s)
- E A Bocchi
- Heart Institute, São Paulo University Medical School, Brazil
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Pastore CA, Moffa PJ, Tobias NM, de Moraes AP, Kaiser E, Cuoco MA, Mansur A, Granado G, Sanchez MDC, Bellotti G, Pileggi F. [Left bundle branch block analysis by body surface mapping. Comparison with electrocardiographic and vectocardiographic findings]. Arq Bras Cardiol 1996; 66:253-6. [PMID: 9008906] [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: 02/03/2023] Open
Abstract
PURPOSE To compare the correlation between the departure areas (DA), negative or positive, in patients whose electrocardiogram showed left bundle branch block (LBBB) and association with left ventricular hipertrophy (LVH) and myocardial infarction (MI), to the electrocardiographic (ECG) and vectocardiographic (VCG) classic criteria. METHODS The study was carried out with 46 patients (27 males) with LBBB. These patients had hypertension (19.5%), coronary heart disease (34.7%) and 21 patients with no heart disease (45.8%). RESULTS The statistic analysis using the Cluster method divided the patients in two groups. Group I (22 patients) showed an average rate for the DA (-2 SD) of 1091 for QRS and of 640 for ST-T. For the DA (+2 SD), the average rate was 618 for QRS and 881 for ST-T; group II (24 patients) showed an averaged for the DA (-2 SD) of 1063 for QRS and of 225 for ST-T. For the DA (+2 SD), the averaged rate was 428 for QRS and 600 for ST-T. CONCLUSION In general the current ECG/VCG findings, can not differentiate the presence of the association of LBBB to LVH and MI. The DA of ST-T, mainly negative was the most efficient to separate the two groups and help in the differential diagnosis.
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Affiliation(s)
- C A Pastore
- Instituto do Coração do Hospital das Clínicas, FMUSP
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Tarasoutchi F, Grinberg M, Barreto Filho JA, Vasconcelos JT, Cardoso LF, Lunardi W, Mansur A, Pomerantzeff P, da Luz PL, Bellotti G. [Acquired ventricular septal defect during infective endocarditis]. Arq Bras Cardiol 1994; 63:203-5. [PMID: 7778992] [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: 01/27/2023] Open
Abstract
We studied five patients with acquired ventricular septal defect during the course of an infective endocarditis. All patients were male and had a previous aortic valve disease associated with an aortic ring abscess. Clinical examination was useful for the diagnosis of 4 cases, emphasizing the following findings: systolic murmur and/or left paraesternal thrill and right-heart failure. Incidence of congestive heart failure was 60%, while 40% of all patients died during the in-hospital course. No specific etiologic agent was detected. Therefore, acquired ventricular septal defect should be suspected in patients with infective endocarditis of the aortic valve that evolve with a systolic murmur and/or paraesternal thrill and right-heart failure. Immediate surgical treatment is mandatory in these cases.
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Affiliation(s)
- F Tarasoutchi
- Instituto do Coração do Hospital das Clínicas-FMUSP, São Paulo
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Veilleux M, Lette J, Mansur A, Bertrand C, Cerino M, Picard M, McNamara D, Eybalin MC, Levasseur A, Nattel S. Prognostic implications of transient left ventricular cavitary dilation during exercise and dipyridamole-thallium imaging. Can J Cardiol 1994; 10:259-62. [PMID: 8143228] [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: 01/29/2023] Open
Abstract
OBJECTIVE To determine the prognostic implication of exercise and dipyridamole-induced transient left ventricular cavitary dilation (TLVD). DESIGN TLVD was observed and a follow-up obtained in 61 patients after exercise and in 62 patients following dipyridamole infusion. PATIENTS There was no statistical difference between groups in terms of sex, history of hypertension, diabetes, renal failure, previous myocardial infarction, severity of angina syndrome, congestive heart failure, resting electrocardiographic (ECG) abnormalities, clinical or ECG signs of ischemia during stress, number of reversible perfusion defects on thallium images or duration of follow-up (21 months). RESULTS Dipyridamole patients were slightly older (64 versus 57 years) and displayed more thallium redistribution (P = 0.002). After a mean follow-up of 21 months, both fatal and nonfatal (myocardial infarction or cardiac death) cardiac events were more frequent in the dipyridamole group (50% versus 9%, P = 0.0001). CONCLUSIONS Patients with dipyridamole-induced TLVD are at greater risk than those with exercise-induced TLVD at the authors' institution.
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Affiliation(s)
- M Veilleux
- Maisonneuve-Rosemont Hospital, Montreal Heart Institute, Quebec
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Stolf NA, Fernandes PM, Mansur A, Grinberg M, de Assis RV, Bellotti G, Pileggi F, Verginelli G, Jatene AD. [Mitral valve aneurysm associated with aneurysms of the sinus of Valsalva in a patient with Marfan syndrome. Case report]. Arq Bras Cardiol 1987; 48:53-6. [PMID: 3662893] [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: 01/06/2023] Open
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