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Robinson J, Burrage M, Ngai S, Mackenzie E, Duong J, Mollee P, Korczyk D. 062 99Tc-DPD Bone Scintigraphy Correlates With Left Ventricular Wall Thickness and Global Longitudinal Strain in Patients With ATTR Wild Type Cardiac Amyloidosis. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Gladding P, Tawhai M, Cater J, Mackenzie E, Villas-Boas S, Taylor M, Palmer A, Jain D, Barbera J. Exhaled breath analysis using a carbon nanotube-based sensor array for metabolic and cardiovascular applications. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.04.103] [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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Seluzicki C, Mackenzie E, Barg F, Leed R, Bowman M, Mao J. P05.63. Perspectives of breast cancer survivors about participating in an acupuncture clinical trial for hot flashes: a qualitative study. Altern Ther Health Med 2012. [PMCID: PMC3373847 DOI: 10.1186/1472-6882-12-s1-p423] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Wigglesworth M, Lawless K, Standing D, Mackenzie E, Kitchen V, Mckay F, Ward E, Brough S, Stylianou M, Jewitt F, Mclaren-Douglas A, Jowet M, Tamayama N, Finnigan D, Ding J, Wise A. Use of Cryopreserved Cells for Enabling Greater Flexibility in Compound Profiling. ACTA ACUST UNITED AC 2008; 13:354-62. [DOI: 10.1177/1087057108317768] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Measurement of intracellular calcium release following agonist challenge within cells expressing the relevant membrane protein is a commonly used format to derive structure-activity relationship (SAR) data within a compound profiling assay. The Fluorometric Imaging Plate Reader (FLIPR) has become the gold standard for this purpose. FLIPR traditionally uses cells that are maintained in continuous culture for compound profiling of iterative chemistry campaigns. This supply dictates that assays can only be run on 4 of 5 weekdays, or alternative cell culture machinery is required such that plating can occur remotely at the weekend. The data reported here demonstrate that high-quality compound profiling data can be generated from the use of cryopreserved cells and that these cells can also be plated at various densities to generate equivalent data between 24 and 72 h post-plating. Hence, the authors report a method that allows data generation throughout the week and without the requirement of highly automated cell culture or continuous culture. ( Journal of Biomolecular Screening 2008:354-362)
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Affiliation(s)
| | | | - D.J. Standing
- Screening and Compound Profiling, GlaxoSmithKline, Harlow, UK
| | - E.K. Mackenzie
- Screening and Compound Profiling, GlaxoSmithKline, Harlow, UK
| | - V.R. Kitchen
- Screening and Compound Profiling, GlaxoSmithKline, Harlow, UK
| | - F. Mckay
- Screening and Compound Profiling, GlaxoSmithKline, Harlow, UK
| | | | - S.J. Brough
- Screening and Compound Profiling, GlaxoSmithKline, Harlow, UK
| | - M. Stylianou
- Screening and Compound Profiling, GlaxoSmithKline, Harlow, UK
| | - F.R. Jewitt
- Screening and Compound Profiling, GlaxoSmithKline, Harlow, UK
| | | | - M.I. Jowet
- Screening and Compound Profiling, GlaxoSmithKline, Harlow, UK
| | - N. Tamayama
- Biological Reagents and Assay Development, GlaxoSmithKline, Stevenage, Hertfordshire, UK
| | - D. Finnigan
- Biological Reagents and Assay Development, GlaxoSmithKline, Stevenage, Hertfordshire, UK
| | - J. Ding
- Discovery Statistics, Upper Providence, Collegeville, PA
| | - A. Wise
- Screening and Compound Profiling, GlaxoSmithKline, Harlow, UK
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Warner J, Epstein M, Sweet A, Singh D, Burgess J, Stranks S, Hill P, Perry-Keene D, Learoyd D, Robinson B, Birdsey P, Mackenzie E, Teh BT, Prins JB, Cardinal J. Genetic testing in familial isolated hyperparathyroidism: unexpected results and their implications. J Med Genet 2004; 41:155-60. [PMID: 14985373 PMCID: PMC1735699 DOI: 10.1136/jmg.2003.016725] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Familial hyperparathyroidism is not uncommon in clinical endocrine practice. It encompasses a spectrum of disorders including multiple endocrine neoplasia types 1 (MEN1) and 2A, hyperparathyroidism-jaw tumour syndrome (HPT-JT), familial hypocalciuric hypercalcaemia (FHH), and familial isolated hyperparathyroidism (FIHP). Distinguishing among the five syndromes is often difficult but has profound implications for the management of patient and family. The availability of specific genetic testing for four of the syndromes has improved diagnostic accuracy and simplified family monitoring in many cases but its current cost and limited accessibility require rationalisation of its use. No gene has yet been associated exclusively with FIHP. FIHP phenotypes have been associated with mutant MEN1 and calcium-sensing receptor (CASR) genotypes and, very recently, with mutation in the newly identified HRPT2 gene. The relative proportions of these are not yet clear. We report results of MEN1, CASR, and HRPT2 genotyping of 22 unrelated subjects with FIHP phenotypes. We found 5 (23%) with MEN1 mutations, four (18%) with CASR mutations, and none with an HRPT2 mutation. All those with mutations had multiglandular hyperparathyroidism. Of the subjects with CASR mutations, none were of the typical FHH phenotype. These findings strongly favour a recommendation for MEN1 and CASR genotyping of patients with multiglandular FIHP, irrespective of urinary calcium excretion. However, it appears that HRPT2 genotyping should be reserved for cases in which other features of the HPT-JT phenotype have occurred in the kindred. Also apparent is the need for further investigation to identify additional genes associated with FIHP.
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Affiliation(s)
- J Warner
- Department of Diabetes and Endocrinology, Princess Alexandra Hospital, Ipswich Rd, Woolloongabba 4102, Qld, Australia
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Champion HR, Copes WS, Sacco WJ, Lawnick MM, Bain LW, Gann DS, Gennarelli T, Mackenzie E, Schwaitzberg S. A new characterization of injury severity. J Trauma 1990; 30:539-45; discussion 545-6. [PMID: 2342136 DOI: 10.1097/00005373-199005000-00003] [Citation(s) in RCA: 303] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
ASCOT (A Severity Characterization of Trauma) is a physiologic and anatomic characterization of injury severity which combines emergency department admission values of Glasgow Coma Scale, systolic blood pressure, respiratory rate, patient age, and AIS-85 anatomic injury scores in a way that obviates ISS shortcomings. ASCOT values are related to survival probability using the logistic function and regression weights reaffirm the importance of head injury and coma to the prediction of patient outcome. The ability of TRISS and ASCOT to discriminate survivors from non-survivors and the reliability of their predictions, as measured by the Hosmer-Lemeshow statistic, were compared using Major Trauma Outcome Study (MTOS) patient data. ASCOT performance matched or exceeded TRISS's for blunt-injured patients and for penetrating-injured patients. ASCOT performance gains were modest for blunt-injured patients. The Hosmer-Lemeshow statistics suggest that ASCOT reliably predicts patient outcome for penetrating-injured patients and nearly so for blunt-injured patients. Statistically reliable predictions were not achieved by TRISS for either set. ASCOT provides a more precise description of patient physiologic status and injury number, location, and severity than TRISS. The ASCOT patient description may be useful in relating to other important outcomes not highly correlated with TRISS or the Injury Severity Score (ISS) such as disability, length of stay, and resources required for treatment.
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Fieschi C, Mackenzie E, Lenzi GL, Orzi F, Iadecola C, Lucignani G, Di Piero V, Pantano P, Pozzilli C. Facts and trends in cerebral blood flow and metabolism: synopsis of brain '89. J Cereb Blood Flow Metab 1989; 9:573-8. [PMID: 2777929 DOI: 10.1038/jcbfm.1989.82] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- C Fieschi
- Dip. Scienze Neurologiche, Universita di Roma, Italia
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Mackenzie E, Standen NB. The effects of stimulation rate on calcium-dependent action potentials recorded from chick embryo heart cell aggregates. J Physiol 1982; 324:1-10. [PMID: 7097590 PMCID: PMC1250689 DOI: 10.1113/jphysiol.1982.sp014096] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
1. Action potentials were recorded from aggregates of heart cells prepared from 3- to 7-day chick embryos. At 3 days the maximum rate of rise (+ Vmax) was insensitive to TTX; at 7 days it was considerably reduced by TTX. 2. In the presence of TTX the action potential overshoot was dependent on [Ca]0; the results may be fitted using constant field theory and assuming that the membrane is over a hundred times more permeable to Ca than to Na or K. 3. An increase in stimulation rate in the range 0.2-2 Hz led to an increase in both overshoot and + Vmax. This effect was not seen after addition of 20 mM-tetraethylammonium ions, nor when Sr was substituted for Ca in the external medium. We suggest that these rate-dependent changes may result from partial inactivation of an outward K current.
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Abstract
The postnatal development of positive inotropic responses in ventricular tissue was investigated using isolated rat papillary muscles. Responses to exogenous noradrenaline or isoprenaline were already fully developed in preparations from newborn rats. These newborn preparations were also supersensitive to noradrenaline. Responses to field stimulation of intramural nerves or to tyramine were very low in preparations from animals of up to two weeks in age, but had increased to near adult values by 3 weeks of age. This increase in responsiveness was correlated with a progressive increase in sympathetic innervation revealed by fluorescence histochemistry. It is concluded that beta-receptors are present on the ventricular myocardium at birth in the rat, but that positive inotropic responses to sympathetic nerve stimulation do not develop until between 2 and 3 weeks of age.
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Mackenzie E, Standen NB. Adrenergic innervation of the mouse heart revealed at an early stage using alpha-methylnoradrenaline. Cell Tissue Res 1976; 173:129-32. [PMID: 791499 DOI: 10.1007/bf00219270] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The development of noradrenergic innervation was studied in the mouse heart using fluorescence histochemistry. Following incubation of hearts with alpha-methylnoradrenaline fluorescent nerve fibres were seen as early as 13 days in utero. It is suggested that the neuronal uptake mechanism for noradrenaline is functional at an early stage.
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Mackenzie E. A Case of Complete Rupture of the Urethra, with Extravasation of Urine. West J Med 1886; 1:440. [DOI: 10.1136/bmj.1.1314.440] [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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