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Seifabadi R, Jiang L, Krishnasamy V, Negussie A, Banovac F, Wood B. Electrification of IVC filters with radiofrequency ablation to facilitate removal: ex vivo phantom study. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Choi D, Negussie A, Seifabadi R, O’Grady N, Jiang L, Lozier J, Amalou H, Chang R, Wood B. Battery-powered electrified conductive vascular access device minimizes fibrin sheath adhesion. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Krishnasamy V, Pritchard W, Levy E, Banovac F, Seifabadi R, Xu S, Mikhail A, Negussie A, Jiang L, Woods D, Bakhutashvili I, Esparza-Trujillo J, Thai J, Narayanan H, Mathew M, Karanian J, Wood B. Medium to large artery embolization with a novel conductive retrievable basket, a conductive snare, and radiofrequency energy deposition. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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54
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Castro M, Leonard S, Celik H, Wakim P, Karanian J, Pritchard W, Borys N, Lencioni R, O’Neal M, Tak W, Wood B. Do geometric features of hepatocellular carcinomas correlate with survival following radiofrequency ablation (RFA) with and without lyso-thermosensitive liposomal doxorubicin (LTLD/Thermodox)? J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Xu S, Krishnasamy V, Levy E, Wood B. Smart phone guided needle angle selection. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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56
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Krishnasamy V, Banovac F, Mikhail A, Levy E, Negussie A, Pritchard W, Karanian J, Bakhutashvili I, Woods D, Esparza-Trujillo J, Tang Y, Macfarlane C, Willis S, Lewis A, Wood B. Topotecan-eluting radiopaque embolic beads (ROB) for transarterial hepatic chemoembolization (TACE). J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Walesby KE, Lyall MJ, Mackay TW, Wood B, Bell D. Valuing our trainees: the future of medicine in the UK. J R Coll Physicians Edinb 2016; 46:146-149. [DOI: 10.4997/jrcpe.2016.301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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58
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Wood B, Ismail K. A cardiac arrest following the administration of succinylcholine. ACTA ANAESTHESIOLOGICA BELGICA 2016; 67:97-99. [PMID: 29444395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A twenty-three year old woman, admitted to the intensive care unit (ICU) with a diagnosis of menin- gitis and associated lower limb ischemia suffered a car- diac arrest, due to extreme hyperkalemia, following the administration of succinylcholine in order to replace an endo-tracheal tube. After prolonged cardiopulmonary resuscitation (CPR) lasting 45 minutes, during which 8 mg of epinephrine was administered, cardiac output was restored. Four weeks later the patient left intensive care, having made a full recovery with no neurological deficit. The following case highlights the risks of succinylcholine in the septic patient and that prolonged resuscitation can have a succesfiil outcome.
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Wood B, Toma A, McGowan M. 269 Impact of an Asthma Care Pathway on the Emergency Department Management of Asthma. Ann Emerg Med 2015. [DOI: 10.1016/j.annemergmed.2015.07.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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60
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Greten T, Duffy A, Rusher O, Kerkar S, Kleiner D, Figg W, Steinberg S, Abi-Jaoudeh N, Wood B. 2259 Tremelimumab - A monoclonal antibody against CTLA-4 - in combination with local tumor ablation (TACE or RFA) in patients with hepatocellular carcinoma (HCC). Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31175-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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61
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Duffy A, Kerkar SP, Kleiner DE, Ulahannan S, Kurtoglu M, Rusher O, Fioravanti S, Walker M, Figg WD, Compton K, Venkatesan A, Abi-Jaoudeh N, Wood B, Greten TF. Paired tumor biopsy analysis and safety data from a pilot study evaluating Tremelimumab - a monoclonal antibody against CTLA-4 - in combination with ablative therapy in patients with hepatocellular carcinoma (HCC). J Immunother Cancer 2014. [PMCID: PMC4288787 DOI: 10.1186/2051-1426-2-s3-p98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Wood B, Coles-Rutishauser I, English R. NHMRC nutrition (standing) committee archives (1974–1990). JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2014. [DOI: 10.1016/j.jnim.2014.10.205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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63
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Osinusi A, Bon D, Nelson A, Lee YJ, Poonia S, Shivakumar B, Cai SY, Wood B, Haagmans B, Lempicki R, Herrmann E, Sneller M, Polis M, Masur H, Kottilil S. Comparative efficacy, pharmacokinetic, pharmacodynamic activity, and interferon stimulated gene expression of different interferon formulations in HIV/HCV genotype-1 infected patients. J Med Virol 2014; 86:177-85. [PMID: 24166150 DOI: 10.1002/jmv.23773] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2013] [Indexed: 12/14/2022]
Abstract
The effect of different formulations of interferon on therapeutic response in patients coinfected with HIV and HCV is unclear. In this study, the safety, tolerability, viral kinetics (VK) modeling and host responses among HIV/HCV coinfected patients treated with pegylated-IFN or albinterferon alfa-2b (AlbIFN) with weight-based ribavirin were compared. Three trials treated 57 HIV/HCV coinfected genotype-1 patients with PegIFN alfa-2b (1.5 µg/kg/week) (n = 30), PegIFN alfa-2a (180 µg/week) (n = 10), and AlbIFN (900 µg/q2week) (n = 17) in combination with weight-based ribavirin (RBV). HCV RNA, safety labs, and interferon stimulated gene expression (ISG) was evaluated. Adverse events were documented at all study visits. HCV viral kinetics using a full pharmacokinetic/pharmacodynamic model was also evaluated. Baseline patient characteristics were similar across the three studies. All three formulations exhibited comparable safety and tolerability profiles and efficacy. VK/PK/PD parameters for all three studies as measured by mean efficiency and rate of infected cell loss were similar between the three groups. Host responses (ISG expression and immune activation markers) were similar among the three groups. All three regimens induced significant ISG at week 4 (P < 0.05) and ISG expression strongly correlated with therapeutic response (r = 0.65; P < 0.01). In summary, a comprehensive analysis of responses to three different interferon formulations in HIV/HCV coinfected patients demonstrated similar effects. Notably, interferon-based therapy results in a blunted host response followed by modest antiviral effect in HIV/HCV coinfected patients. This suggests that future treatment options that do not rely on host immune responses such as direct antiviral agents would be particularly beneficial in these difficult to treat patients.
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Zhao X, Detorie N, Wood B, Sanghvi P, Advani S, Mansy G. Acute Radiation-Induced Skin Toxicity in Breast Intensity Modulated Radiation Therapy (IMRT): A Dosimetric Analysis. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Watts J, Wood B, Kelly A, Alvaro A. Stroke syndromes associated with DWI-negative MRI include ataxic hemiparesis and isolated internuclear ophthalmoplegia. Neurol Clin Pract 2013; 3:186-191. [PMID: 29473634 DOI: 10.1212/cpj.0b013e318296f288] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We present a case series of clinically definite acute stroke with negative diffusion-weighted imaging (DWI). This study retrospectively examined a large population of stroke patients with the aim of identifying which stroke syndromes were more likely to be negative on MRI. Patient records and images were reviewed in order to confirm clinically definite stroke and DWI negativity. A total of 701 patients had MRI during the study period. A total of 16 patients with DWI-negative MRI and clinically definite stroke as diagnosed by experienced stroke consultants were identified. A total of 15 of the 16 cases were classified as either posterior circulation or lacunar strokes, and the most common syndromes were ataxic hemiparesis and isolated internuclear ophthalmoplegia.
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Crawford MK, Smalley RJ, Cohen G, Hogan B, Wood B, Kumar SK, Melnichenko YB, He L, Guise W, Hammouda B. Chain conformation in polymer nanocomposites with uniformly dispersed nanoparticles. PHYSICAL REVIEW LETTERS 2013; 110:196001. [PMID: 23705720 DOI: 10.1103/physrevlett.110.196001] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Indexed: 05/28/2023]
Abstract
The effect of nanoparticles (NP) on chain dimensions in polymer melts has been the source of considerable theoretical and experimental controversy. We exploit our ability to ensure a spatially uniform dispersion of 13 nm silica NPs miscible in polystyrene melts, together with neutron scattering, x-ray scattering, and transmission electron microscopy, to show that there is no measurable change in the polymer size in miscible mixtures, regardless of the relative sizes of the chains and the nanoparticles, and for NP loadings as high as 32.7 vol%. Our results provide a firm basis from which to understand the properties of polymer nanocomposites.
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Han J, Murthy R, Wood B, Song B, Wang S, Sun B, Malhi H, Kaufman RJ. ER stress signalling through eIF2α and CHOP, but not IRE1α, attenuates adipogenesis in mice. Diabetologia 2013; 56:911-24. [PMID: 23314846 PMCID: PMC3606029 DOI: 10.1007/s00125-012-2809-5] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 11/27/2012] [Indexed: 01/21/2023]
Abstract
AIMS/HYPOTHESIS Although obesity is associated with endoplasmic reticulum (ER) stress and activation of the unfolded protein response (UPR) in adipose tissue, it is not known how UPR signalling affects adipogenesis. To test whether signalling through protein kinase RNA-like ER kinase/eukaryotic initiation factor 2 alpha (PERK/eIF2α) or inositol-requiring enzyme 1 alpha/X-box binding protein 1 (IRE1α/XBP1) is required for adipogenesis, we studied the role of UPR signalling in adipocyte differentiation in vitro and in vivo in mice. METHODS The role of UPR signalling in adipogenesis was investigated using 3T3-L1 cells and primary mouse embryonic fibroblasts (MEFs) by activation or inhibition of PERK-mediated phosphorylation of the eIF2α- and IRE1α-mediated splicing of Xbp1 mRNA. Body weight change, fat mass composition and adipocyte number and size were measured in wild-type and genetically engineered mice fed a control or high-fat diet (HFD). RESULTS ER stress repressed adipocyte differentiation in 3T3-L1 cells. Impaired eIF2α phosphorylation enhanced adipocyte differentiation in MEFs, as well as in mice. In contrast, increased eIF2α phosphorylation reduced adipocyte differentiation in 3T3-L1 cells. Forced production of CCAAT/enhancer binding protein (C/EBP) homologous protein (CHOP), a downstream target of eIF2α phosphorylation, inhibited adipogenesis in 3T3-L1 cells. Mice with deletion of Chop (also known as Ddit3) (Chop (-/-)) gained more fat mass than wild-type mice on HFD. In addition, Chop deletion in genetically obese Lepr (db/db) mice increased body fat mass without altering adipocyte size. In contrast to the eIF2α-CHOP pathway, activation or deletion of Ire1a (also known as Ern1) did not alter adipocyte differentiation in 3T3-L1 cells. CONCLUSIONS/INTERPRETATION These results demonstrate that eIF2α-CHOP suppresses adipogenesis and limits expansion of fat mass in vivo in mice, rendering this pathway a potential therapeutic target.
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Waters M, Rebholz CM, Wood B, Kuske A, McIntyre M, Sartor O. Second to fourth digit ratio and prostate cancer severity. Prostate Cancer Prostatic Dis 2012; 16:107-10. [PMID: 23146972 DOI: 10.1038/pcan.2012.46] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The ratio of the second to the fourth digit (2D:4D ratio) is a sexually dimorphic trait established in utero that differs between ethnic groups. It is associated with prenatal androgen exposure, and studies have evaluated the ratio as a marker for certain traits and disease states known to be associated with higher levels of in utero androgens, such as prostate cancer. There are currently no screening tools that stratify men with prostate cancer according to the severity of their disease. This study aims to investigate the 2D:4D ratio as a potential marker for prostate cancer severity. Our hypothesis was that lower digit ratios, representing higher in utero androgen exposure, would be associated with more severe disease. METHODS Measurements were taken of the second and fourth digits of the right hand of male patients diagnosed with prostate cancer. Gleason score, presence of metastasis, family history, age at diagnosis and race were recorded. The distribution of demographic and other patient characteristics were compared with digit ratios to determine relationships. RESULTS African-American men with prostate cancer are 3.70 times more likely to have a low 2D:4D digit ratio than Caucasian men with prostate cancer (95% confidence interval: 1.98, 6.92; P < 0.0001). There were no statistically significant differences in the presence of metastasis, Gleason score, family history or age at diagnosis by digit ratio. CONCLUSION 2D:4D ratio shows strong differences between African-Americans and Caucasians; however, it does not correlate with disease severity in men already diagnosed with prostate cancer. Although this is a small population sample with possible confounding factors, it does not provide evidence to support the hypothesis that prenatal androgens affect prostate cancer grade or progression.
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Wood B. WHAT HAS WORKED WITH RECIDIVIST DRINK DRIVERS TO REDUCE RE-OFFENDING? Inj Prev 2012. [DOI: 10.1136/injuryprev-2012-040580d.5] [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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Horgan K, Touqan N, Turton E, Wood B. 273. Rising Prevalence of MRSA Carriage in Elective Breast Surgery Patients Emphasises the Importance of Effective Screening. Eur J Surg Oncol 2012. [DOI: 10.1016/j.ejso.2012.06.274] [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] Open
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71
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Tabriz D, Sharma K, Dreher M, Wood B. Embolization-monitoring catheter and system for quantification of flow, reflux, and microsphere delivery. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2012.05.021] [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] Open
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Wood B, van der Mei IAF, Ponsonby AL, Pittas F, Quinn S, Dwyer T, Lucas RM, Taylor BV. Prevalence and concurrence of anxiety, depression and fatigue over time in multiple sclerosis. Mult Scler 2012; 19:217-24. [PMID: 22729988 DOI: 10.1177/1352458512450351] [Citation(s) in RCA: 204] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Anxiety, depression and fatigue are commonly reported by persons with multiple sclerosis (PwMS). OBJECTIVES We estimated the prevalence of each factor in a representative sample of PwMS, and in subgroups defined by age, sex and disease duration, at cohort entry and over time. We further examined whether and how these factors clustered together. METHODS A population-based longitudinal cohort of 198 PwMS was followed 6-monthly for 2.5 years. The Hospital Anxiety and Depression Scale (HADS) was used to measure anxiety (cut-point >7) and depression (>7) and the Fatigue Severity Scale (FSS) to measure fatigue (≥5). RESULTS At cohort entry, prevalence of anxiety was 44.5% (95%CI 37-51%), depression 18.5% (95%CI 12.6-23.4%), and fatigue 53.7% (95%CI 47-61%). Fatigue was more common in males than females (RR 1.29, p=0.01), with attenuation of the effect after adjustment for Expanded Disability Status Scale (adjusted RR 1.18, p=0.13). Prevalence of anxiety (but not depression or fatigue) decreased by 8.1% per year of cohort observation (RR 0.92, 95%CI 0.86-0.98, p=0.009), with the effect more pronounced in women (14.6%, RR 0.85, 95%CI 0.79-0.93, -<0.001) than men (2.6%, RR 1.03, 95%CI 0.90-1.17, p=0.77). There was no apparent seasonal variation in the prevalence of any of the three factors (p>0.05). All three factors occurred contemporaneously at cohort entry in a higher proportion of the cohort than expected by chance (p<0.001). CONCLUSIONS Anxiety, depression and fatigue are common in PwMS and tend to cluster together. The findings are important for clinical management of PwMS and to the exploration of possible shared causal biological pathways.
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Watts J, Alvaro T, Kelly A, Wood B. Negative MRI Findings in Stroke (PD2.003). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.pd2.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Lyons J, Phillips R, Wood B, Johnson J, Folkerth R, Milner D, Klein J. Case Report: HIV-2 Encephalitis in a Patient with Subacute Cognitive Decline (P02.267). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p02.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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75
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Ballal H, Kamyab R, Wood B, Yeo A, Abdul Aziz F. Risk of additional axillary metastases after micrometastases in sentinel lymph node in a Western Australian population. Breast 2012. [DOI: 10.1016/j.breast.2011.12.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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