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Brereton PA, Robb P, Sargent CM, Crews HM, Wood R, Caputi A, Carrington J, Chetaneau B, Cohen S, Davies RW, Davis WS, Dix E, Ennion; RA, Furniss S, Gardner JW, Griffin J, Hampton I, Harrison N, Heide C, Hollywood F, Hopkins J, Liddle P, Meagher J, Osborne PY, Piatt T, Postlethwaite K, Procter J, Reynolds EB, Robinson J, Smith M, Sparkes S, Stangroom SG, Stevens R, Sutton P, Swain S, Turnbull J, Vidal JP, Waller JM, Zaiger K. Determination of Lead in Wine by Graphite Furnace Atomic Absorption Spectrophotometry: Interlaboratory Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/80.6.1287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
An interlaboratory study of a graphite furnace atomic absorption spectrophotometry (GFAAS) method for the determination of lead in wine was conducted. Seventeen laboratories from France, United States, and the United Kingdom, using a variety of GFAAS instruments, took part in the study. The method incorporated a novel matrix-matching procedure to minimize matrix effects between standards and samples. Six wine test materials were prepared and sent to participants as 12 blind duplicate or split level samples. There was good agreement between results obtained from participants and target values (24–279 μg/L) obtained with an inductively coupled plasma-mass spectrometry method. The precision of the GFAAS method was well within the range predicted by the Horwitz equation for the 6 test materials analyzed. Repeatability standard deviations ranged from 3 to 17%. Reproducibility standard deviations were in the range of 10 to 30%. The method is recommended for use for official purposes.
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Affiliation(s)
- Paul A Brereton
- Ministry of Agriculture, Fisheries and Food, CSL Food Science Laboratory, Norwich Research Park, Colney, Norwich, NR4 7UQ, UK
| | - Paul Robb
- Ministry of Agriculture, Fisheries and Food, CSL Food Science Laboratory, Norwich Research Park, Colney, Norwich, NR4 7UQ, UK
| | - Christine M Sargent
- Ministry of Agriculture, Fisheries and Food, CSL Food Science Laboratory, Norwich Research Park, Colney, Norwich, NR4 7UQ, UK
| | - Helen M Crews
- Ministry of Agriculture, Fisheries and Food, CSL Food Science Laboratory, Norwich Research Park, Colney, Norwich, NR4 7UQ, UK
| | - Roger Wood
- Ministry of Agriculture, Fisheries and Food, CSL Food Science Laboratory, Norwich Research Park, Colney, Norwich, NR4 7UQ, UK
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Cachet T, Brevard H, Chaintreau A, Demyttenaere J, French L, Gassenmeier K, Joulain D, Koenig T, Leijs H, Liddle P, Loesing G, Marchant M, Merle P, Saito K, Schippa C, Sekiya F, Smith T. IOFI recommended practice for the use of predicted relative-response factors for the rapid quantification of volatile flavouring compounds by GC-FID. FLAVOUR FRAG J 2016. [DOI: 10.1002/ffj.3311] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- T. Cachet
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - H. Brevard
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - A. Chaintreau
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - J. Demyttenaere
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - L. French
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - K. Gassenmeier
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - D. Joulain
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - T. Koenig
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - H. Leijs
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - P. Liddle
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - G. Loesing
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - M. Marchant
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - Ph. Merle
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - K. Saito
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - C. Schippa
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - F. Sekiya
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
| | - T. Smith
- IOFI (International Organization of the Flavor Industry), Working Group on Methods of Analysis
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Cachet T, Brevard H, Cantergiani E, Chaintreau A, Demyttenaere J, French L, Gassenmeier K, Joulain D, Koenig T, Leijs H, Liddle P, Loesing G, Marchant M, Saito K, Scanlan F, Schippa C, Scotti A, Sekiya F, Sherlock A, Smith T. IOFI guidelines for the isolation of flavouring substances by simultaneous distillation-extraction. FLAVOUR FRAG J 2014. [DOI: 10.1002/ffj.3226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Cachet
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - H. Brevard
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - E. Cantergiani
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - A. Chaintreau
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - J. Demyttenaere
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - L. French
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - K. Gassenmeier
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - D. Joulain
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - T. Koenig
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - H. Leijs
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - P. Liddle
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - G. Loesing
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - M. Marchant
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - K. Saito
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - F. Scanlan
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - C. Schippa
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - A. Scotti
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - F. Sekiya
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - A. Sherlock
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
| | - T. Smith
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
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Cachet T, Brevard H, Cantergiani E, Chaintreau A, Demyttenaere J, French L, Gassenmeier K, Joulain D, Koenig T, Leijs H, Liddle P, Loesing G, Marchant M, Saito K, Scanlan F, Schippa C, Scotti A, Sekiya F, Sherlock A, Smith T. Determination of volatile ‘restricted substances’ in flavourings and their volatile raw materials by GC-MS. FLAVOUR FRAG J 2014. [DOI: 10.1002/ffj.3222] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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)
- T. Cachet
- IOFI (International Organization of the Flavor Industry); Working Group on Methods of Analysis
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Varlamov A, Duggan C, Strelets V, Kravchenko A, Howard R, Liddle P. Searching for electrophysiological endophenotypes of antisocial personality disorder: ERP and ERBP traits in visual Go/No Go and auditory oddball tasks. Int J Psychophysiol 2012. [DOI: 10.1016/j.ijpsycho.2012.06.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Folle GA, Liddle P, Lafon-Hughes L, Di Tomaso MV. Close encounters: RIDGEs, hyperacetylated chromatin, radiation breakpoints and genes differentially expressed in tumors cluster at specific human chromosome regions. Cytogenet Genome Res 2010; 128:17-27. [PMID: 20407218 DOI: 10.1159/000296072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Through analysis of published data we positioned along human chromosome idiograms (850 bands) hyperacetylated H4 chromatin (H4(+a)), regions of increased gene expression (RIDGEs), antiRIDGEs, ionizing radiation breakpoints, integration sites of highly expressed GFP reporter constructs and candidate genes differentially expressed in tumor tissues. Highly expressed regions of the human genome (especially RIDGEs) seem to be more sensitive to radiation damage. Comparatively, antiRIDGEs appear as radiation resistant. Tumor deregulated genes tend to cluster along and in the neighborhood of RIDGEs. We detected 35 clusters of genes differentially expressed in tumor tissues which colocalize with RIDGEs; 23 of these clusters also exhibit radiation damage. RIDGEs also accumulate highly expressed GFP reporter construct integration sites, evolutionary breakpoints as well as amplicons and/or deletion-prone chromosome segments in tumors. This could indicate that abnormal gene (up- or down-) regulation might require high-throughput transcription nuclear micro-environments to occur. Our results suggest that the human genome is a combination of regions with marked disparities regarding the topology of increased gene expression, ionizing radiation damage, evolutionary breakpoints, integration sites, and abnormal gene regulation.
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Affiliation(s)
- G A Folle
- Departamento de Genética, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Montevideo 11600, Uruguay.
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Abstract
Formal thought disorder (FTD) is a core feature of schizophrenia, but its pathophysiology is poorly understood. It can be conceptualised as 'positive' (e.g. incoherence, neologisms) or 'negative' (e.g. poverty of thought) thought disorder. We investigated the neural correlates of negative FTD. Blood oxygenation level-dependent (BOLD) contrast was measured using functional magnetic resonance imaging (fMRI) while six patients with schizophrenia and six healthy control subjects spoke about seven Rorschach inkblots for 3 min each. Varying degrees of thought-disordered speech were elicited during each run. In a within-subject design, the degree of negative thought disorder, conceptualised as 'poverty of speech' (Liddle et al. (2002) Thought and Language Index. Br J Psychiatry) was correlated with BOLD contrast in the two runs per patient showing the highest variance in this phenomenon. The degree of poverty of speech correlated positively mainly with activation in the right inferior parietal lobe (BA 40), middle frontal gyrus (BA 46), cuneus (BA 18), and the left posterior cingulate (BA 31). Negative correlations were evident in the left hippocampal/fusiform gyrus (BA 35/36/37). The severity of negative FTD correlates with activation in areas previously implicated in autobiographic episodic memory. During symptoms behaviourally characterised as negative, patients may experience rich memories and associations.
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Affiliation(s)
- T Kircher
- Klinik für Psychiatrie und Psychotherapie, Universität Tübingen.
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Kircher T, Liddle P, Brammer M, Williams S, Simmons A, Murray R, Bartels M, McGuire P. Production of thought disordered speech in schizophrenia is negatively correlated with activation in the left superior temporal gyrus. Neuroimage 2000. [DOI: 10.1016/s1053-8119(00)91142-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Kircher T, Liddle P, Brammer M, Williams S, Simmons A, Bartels M, Murrays R, McGuire P. Right temporal activation during the production of neologisms in thought disordered schizophrenic patients. An ER fMRI study. Neuroimage 2000. [DOI: 10.1016/s1053-8119(00)91144-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Abstract
UNLABELLED To identify which improvements in cognitive function are associated with symptom resolution in schizophrenic patients treated with atypical antipsychotics. DESIGN a prospective open trial with atypical neuroleptics (risperidone, clozapine, quetiapine). SETTING Inpatient and outpatient units, Institute of Psychiatry. PATIENTS Thirty-nine patients with schizophrenia according to DSM-IV criteria were included. Clinical and cognitive assessment were done at baseline (T0) and again after six months of treatment (T2). Twenty-five patients completed the trial. INTERVENTIONS New-generation antipsychotics during six months. Patients were considered as responders if their PANSS score decreased at least 20% (n = 15) and non-responders if it did not (n = 10). OUTCOME MEASURES a computerized cognitive assessment comprised tests of short-term-memory (digit span), explicit long-term memory (word pair learning), divided attention, selective attention and verbal fluency (orthographic and semantic). Clinical assessment included PANSS and ESRS. RESULTS A discriminant function analysis was performed to determine which changes in cognitive performance predicted symptomatic response status. Semantic fluency and orthographic fluency were significant predictors. Together they correctly predicted responder status in 88% of cases. Memory was not a significant predictor of symptomatic response. CONCLUSION Verbal fluency discriminated the responder from the non-responder group during a pharmacological treatment.
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Affiliation(s)
- E Stip
- Centre de recherche Fernand Seguin, Hôpital L.H. Lafontaine, Université de Montréal, 7331 rue Hochelaga, Montreal HIN 3V2 Québec Canada
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Harty M, Seth R, Liddle P, Burke C, Sikora K. Psychosocial needs expressed by patients attending the oncology outpatients. Eur Psychiatry 1996. [DOI: 10.1016/0924-9338(96)88984-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Spence S, Sharma T, Hellewell J, Stefan M, McGuire P, Grasby P, Deakin W, Murray R, Friston K, Frith C, Liddle P. A pet study of word generation in obligate carriers of the predisposition to schizophrenia. Eur Psychiatry 1996. [DOI: 10.1016/0924-9338(96)88683-4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Glover V, Liddle P, Taylor A, Adams D, Sandler M. Mild hypomania (the highs) can be a feature of the first postpartum week. Association with later depression. Br J Psychiatry 1994; 164:517-21. [PMID: 8038942 DOI: 10.1192/bjp.164.4.517] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
About 10% of women show elation and associated features of hypomania in the first 5 days following childbirth. These symptoms can be detected using a self-rating scale (the 'Highs') based on SADS-L criteria. This phenomenon has been confirmed using the observer-rated Comprehensive Psychopathological Rating Scale, which also revealed a high degree of related irritability. Significantly more women scoring > or = 8 on the Highs scale at 3 days postpartum went on to manifest depression at 6 weeks than did subjects with no psychopathology in the early puerperium. It is suggested that the 'highs' followed by depression may be a mild and common form of bipolar disorder.
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Affiliation(s)
- V Glover
- Department of Chemical Pathology, Queen Charlotte's and Chelsea Hospital, London
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