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McCaughan E, Prue G, Parahoo K, McIlfatrick S, McSorley O, O'Sullivan J, McKenna H. Men and masculinity: a comparison of men and women with colorectal cancer. JOURNAL OF MEN'S HEALTH 2011. [DOI: 10.1016/j.jomh.2011.08.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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77
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Martin P, Noonan S, Biniecka M, Fox E, Maguire A, Hyland J, O'Donoghue D, Sheahan K, Fennelly D, O'Sullivan J. 1162 POSTER Frequency of Mitochondrial Point Mutations and Deletions in Late Stage Colorectal Cancer Patients. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70805-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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78
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Martin P, Noonan S, Nolan B, Scaife C, Elia G, Tosetto M, O'Donoghue D, Mulcahy H, Fennelly D, O'Sullivan J. 1135 POSTER Proteomic Anlaysis of Differenially Expressed Proteins in Patients With Metastatic Colorectal Cancer Responding to Bevacizumab. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70778-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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79
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Martin P, Noonan S, Biniecka M, Fox E, Maguire A, Hyland J, O'Donoghue D, Sheahan K, Mulcahy H, Fennelly D, O'Sullivan J. Frequency of mitochondrial point mutations and deletions in late-stage colorectal cancer patients. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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80
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Noonan S, Martin P, Biniecka M, Maguire A, Tosetto M, Hyland J, Sheahan K, O'Donoghue D, Mulcahy H, Fennelly D, O'Sullivan J. Correlation of high levels of immature blood vessels in colorectal tumors with longer survival following bevacizumab treatment. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.10586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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81
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Murphy AG, Fennelly DW, Reynolds A, Tosetto M, Hyland J, Sheahan K, O'Donoghue D, Mulcahy H, Kennedy B, O'Sullivan J. Development of novel antiangiogenic compounds for colorectal cancer using a tumor explant model and zebrafish. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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82
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Mc Garry C, Butterworth K, Trainor C, O'Sullivan J, Prise K, Hounsell A. 263 oral TEMPORAL CHARACTERISATION AND IN-VITRO COMPARISON OF CELL SURVIVAL FOLLOWING DELIVERY OF 3D-CONFORMAL, INTENSITY MODULATED RADIATION THERAPY (IMRT) AND VOLUMETRIC MODULATED ARC THERAPY (VMAT). Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70385-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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83
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Hynds S, Irvine D, Houston R, Henry P, Stranex S, McAleer J, O'Sullivan J. 72 speaker CURRENT STATUS ON TOTAL SKIN ELECTRON IRRADIATION. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70195-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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84
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Singh P, Yan J, Hull R, Read S, O'Sullivan J, Henderson RD, Rose S, Greer JM, McCombe PA. Levels of phosphorylated axonal neurofilament subunit H (pNfH) are increased in acute ischemic stroke. J Neurol Sci 2011; 304:117-21. [PMID: 21349546 DOI: 10.1016/j.jns.2011.01.025] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Revised: 12/29/2010] [Accepted: 01/27/2011] [Indexed: 12/31/2022]
Abstract
For the study of stroke outcomes, there is the need for measurements of severity of stroke damage. Phosphorylated neurofilament heavy protein (pNfH) levels are elevated in axonal injury. We have measured levels of pNfH in stroke and correlated these levels with measures of stroke severity. Blood samples were collected from 54 ischaemic stroke patients at day 1, week 1 (days 7-10) and weeks 3-6, and an ELISA was used to measure pNfH levels in each patient at each time-point. Serum pNfH levels were significantly elevated in stroke patients compared to healthy controls. The levels were low at day 1, higher at day 7 and reached a peak at week 3, the latest day that we assessed. Significant associations were found between the pNfH levels at week 3 and early and stroke severity, size and outcome. Blood pNfH levels that reflect the severity of ischaemic stroke, are correlated with outcome and rise during the weeks after stroke. This may be a useful measure of tissue damage in stroke.
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85
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Harty LC, Biniecka M, Fox E, O'Sullivan J, Veale DJ, Fearon U. The mutation of mitochondrial DNA is central to the pathogenesis of rheumatoid and psoriatic arthritis. Ann Rheum Dis 2011. [DOI: 10.1136/ard.2010.148965.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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86
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Leech NJ, O'Sullivan J, Avery P, Howey C, Burling K, Iyer S, Pascoe L, Walker M, Cheetham T. Increased maternal Homeostasis Model Assessment of Insulin Resistance (HOMA-IR) associated with older age at diagnosis of Type 1 diabetes in offspring. Diabet Med 2010; 27:1450-3. [PMID: 21105490 DOI: 10.1111/j.1464-5491.2010.03130.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
AIMS Obesity and insulin resistance have been linked to rising incidence and earlier onset of Type 1 diabetes. Inherited differences in insulin action might also influence the evolution of Type 1 diabetes.Our aim was to determine whether parental BMI and insulin resistance influences age of onset of Type 1 diabetes in their offspring. METHODS BMI standard deviation score and age at diagnosis of Type 1 diabetes was examined in 227 children, and in 206 of these was compared with local matched control subjects. Non-diabetic parents of a subgroup of 80 children with Type 1 diabetes were recruited. Parental BMI was compared with local adult control subjects. The relationship between parental BMI, waist-hip ratio, homeostasis model assessment of insulin resistance (HOMA-IR), leptin and adiponectin levels and age at diagnosis of Type 1 diabetes in offspring was examined. RESULTS We found no relationship between age at diagnosis of Type 1 diabetes in children and BMI standard deviation score (P = 0.5). Children with Type 1 diabetes and their parents were heavier than matched control subjects (mean BMI standard deviation score sd in children = 0.66 1.06 vs. 0.32 1.16 in control subjects, P = 0.002; mean parental BMI sd 27.7 0.4 vs. 25.5 0.4 kg ⁄m2 in control subjects; P < 0.0001). Maternal HOMA-IR accounted for 20% of variation in age at diagnosis (P < 0.001) with increasing maternal insulin resistance associated with later age at diagnosis of Type 1 diabetes. CONCLUSIONS Childrenwith Type 1 diabetes and their parents have an increased BMI at diagnosis.Maternal insulin resistance is associated with later onset of Type 1 diabetes in children.
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87
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Irving C, Parry G, O'Sullivan J, Dark JH, Kirk R, Crossland DS, Chaudhari M, Griselli M, Hamilton JRL, Hasan A. Cardiac transplantation in adults with congenital heart disease. Heart 2010; 96:1217-22. [DOI: 10.1136/hrt.2009.184713] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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88
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Ng CT, Biniecka M, Kennedy A, McCormick J, Fitzgerald O, Bresnihan B, Buggy D, Taylor CT, O'Sullivan J, Fearon U, Veale DJ. Synovial tissue hypoxia and inflammation in vivo. Ann Rheum Dis 2010; 69:1389-95. [PMID: 20439288 PMCID: PMC2946116 DOI: 10.1136/ard.2009.119776] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
INTRODUCTION Hypoxia is a microenvironmental feature in the inflamed joint, which promotes survival advantage for cells. The aim of this study was to examine the relationship of partial oxygen pressure in the synovial tissue (tPO(2)) in patients with inflammatory arthritis with macroscopic/microscopic inflammation and local levels of proinflammatory mediators. METHODS Patients with inflammatory arthritis underwent full clinical assessment and video arthroscopy to quantify macroscopic synovitis and measure synovial tPO(2) under direct visualisation. Cell specific markers (CD3 (T cells), CD68 (macrophages), Ki67 (cell proliferation) and terminal deoxynucleotidyl transferase dUTP nick end labelling (cell apoptosis)) were quantified by immunohistology. In vitro migration was assessed in primary and normal synoviocytes (synovial fibroblast cells (SFCs)) using a wound repair scratch assay. Levels of tumour necrosis factor alpha (TNFalpha), interleukin 1beta (IL1beta), interferon gamma (IFNgamma), IL6, macrophage inflammatory protein 3alpha (MIP3alpha) and IL8 were quantified, in matched serum and synovial fluid, by multiplex cytokine assay and ELISA. RESULTS The tPO(2) was 22.5 (range 3.2-54.1) mm Hg and correlated inversely with macroscopic synovitis (r=-0.421, p=0.02), sublining CD3 cells (-0.611, p<0.01) and sublining CD68 cells (r=-0.615, p<0.001). No relationship with cell proliferation or apoptosis was found. Primary and normal SFCs exposed to 1% and 3% oxygen (reflecting the median tPO(2) in vivo) induced cell migration. This was coupled with significantly higher levels of synovial fluid tumour necrosis factor alpha (TNFalpha), IL1beta, IFNgamma and MIP3alpha in patients with tPO(2) <20 mm Hg (all p values <0.05). CONCLUSIONS This is the first study to show a direct in vivo correlation between synovial tPO(2), inflammation and cell migration, thus it is proposed that hypoxia is a possible primary driver of inflammatory processes in the arthritic joint.
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O'Sullivan J. The Country Doctor. West J Med 2010. [DOI: 10.1136/bmj.c313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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90
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Prencipe M, Fitzpatrick P, Gorman S, Tosetto M, Klinger R, Furlong F, Harrison M, O'Connor D, Roninson IB, O'Sullivan J, McCann A. Erratum: Cellular senescence induced by aberrant MAD2 levels impacts on paclitaxel responsiveness in vitro. Br J Cancer 2010. [PMCID: PMC2816669 DOI: 10.1038/sj.bjc.6605533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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91
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Williamson K, Abogunrin F, Stevenson M, O'Sullivan J, Duggan B, Anderson N, O'Rourke D, O'Kane H, Ruddock M, Lamont J. 48LBA Algorithmic classifiers to diagnose bladder cancer. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)72083-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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92
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O'Neill A, Dunn M, Archer L, Brown K, Simpson B, Robinson J, Irvine D, O'Sullivan J. BREAST AND SUPRA-CLAVICULAR RADIOTHERAPY SET-UP: A PROSPECTIVE AUDIT OF PRACTICE. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)73196-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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93
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McGarry C, Butterworth K, Prise K, O'Sullivan J, Hounsell A. PRELIMINARY INVESTIGATIONS INTO RADIOBIOLOGICAL EFFECTS FROM INTENSITY-MODULATED RADIATION FIELDS. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)73244-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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94
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Early S, O'Sullivan J, Hynds S. THE TRANSITION FROM THERAPY RADIOGRAPHER TO CLINICAL RESEARCH RADIOGRAPHER. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)73001-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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95
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Duffy A, Liew A, O'Sullivan J, Avalos G, Samali A, O'Brien T. Distinct Effects of High-Glucose Conditions on Endothelial Cells of Macrovascular and Microvascular Origins. ACTA ACUST UNITED AC 2009; 13:9-16. [PMID: 16885062 DOI: 10.1080/10623320600659997] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Recent studies implicate hyperglycemia as an important cause of macrovascular and ocular complications in diabetes mellitus. In this study, the authors examined the effect of high glucose on macrovascular and microvascular endothelial cell viability and apoptosis in culture. Human aortic endothelial cells (HAECs) and human retinal endothelial cells (HRECs) were exposed to normal-glucose conditions (NG) and high-glucose conditions (NG supplemented with 25 mM D-glucose) for 72 h in vitro. D-Mannitol was used as an osmotic control. Cell viability was assessed by methlythiazolydiphenyltetrazolium bromide (MTT) assay, and induction of apoptosis was assessed by Hoechst staining. Statistics were analyzed by paired t tests. In HAECs, cell viability was decreased by 12.9% in high-glucose conditions, and apoptotic cells were significantly increased by 77%. However, in HRECs, cell viability was increased by 14.9% in high-glucose conditions, and apoptotic cells were significantly decreased by 33.3%. Mannitol did not show any effect on cell survival or apoptosis ruling out an osmotic effect. High-glucose conditions reduce cell viability and induce apoptosis in HAECs, which may contribute to macrovascular complications associated with diabetes. In contrast, high-glucose increases viability in HRECs and inhibits apoptosis, which may contribute to the development of diabetic retinopathy.
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Evans J, Politte D, Whiting B, O'Sullivan J, Williamson J. SU-DD-A4-06: Tradeoff Between Noise and Resolution in CT Images - Comparison of Filtered Backprojection and the Penalized Alternating Minimization Algorithm. Med Phys 2009. [DOI: 10.1118/1.3181092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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97
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Evans J, O'Sullivan J, Politte D, Lasio G, Williamson J. TU-D-304A-07: Reconstruction From Experimentally Acquired Transmission CT Sinograms with the Polyenergetic Alternating Minimization Algorithm Using An Equivalent X-Ray Spectrum Estimated From Transmission Measurements. Med Phys 2009. [DOI: 10.1118/1.3182395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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98
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Sheridan J, Wang LM, Tosetto M, Sheahan K, Hyland J, Fennelly D, O'Donoghue D, Mulcahy H, O'Sullivan J. Nuclear oxidative damage correlates with poor survival in colorectal cancer. Br J Cancer 2008; 100:381-8. [PMID: 19066606 PMCID: PMC2634709 DOI: 10.1038/sj.bjc.6604821] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Oxidative DNA damage results from DNA adducts such as 8-oxo-7, 8 dihydro-2′-deoxyguanosine (8-oxo-dG), which is a pro-mutagenic lesion. No known association between 8-oxo-dG, disease progression and survival exists in colorectal cancer (CRC). We examined levels of 8-oxo-dG in sporadic CRC to determine its relationship with pathological stage and outcome. A total of 143 CRC patients and 105 non-cancer patients were studied. Nuclear and cytoplasmic 8-oxo-dG was assessed using immunohistochemistry. Double immunofluorescence using 8-oxo-dG and manganese superoxide dismutase (MnSOD) antibodies localised cytoplasmic 8-oxo-dG. Apoptosis was detected using TUNEL. Nuclear staining levels were similar in tumour tissue and matched normal mucosa in both epithelial (P=0.22) and stromal (P=0.85) cells. Epithelial cytoplasmic staining was greater in tumour tissue (P<0.001). Double immunofluorescence localised cytoplasmic 8-oxo-dG to mitochondria. Epithelial and stromal nuclear 8-oxo-dG decreased with local disease spread, but highest levels were found in distant disease (P<0.01). Survival was related to epithelial nuclear and stromal staining in normal mucosa (P<0.001) and tumour (P<0.01) but was unrelated to cytoplasmic staining. Normal control cells in tissue from cancer patients with high levels of 8-oxo-dG failed to undergo cell death. 8-oxo-dG may be an important biomarker of disease risk, progression and survival for CRC patients.
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O'Sullivan J. Hall of Mirrors. West J Med 2008. [DOI: 10.1136/bmj.a1716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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100
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Whiting B, Politte D, O'Sullivan J, Williamson J. WE-D-332-05: Propagation of Correlated Noise in CT Reconstruction. Med Phys 2008. [DOI: 10.1118/1.2962758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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