1
|
Magni N, Collier J, Rice D, McNair P. Response to the letter to the editor: "Prevalence and predictors of neglect-like symptoms in patients with painful hand osteoarthritis". Musculoskelet Sci Pract 2023; 64:102736. [PMID: 36933420 DOI: 10.1016/j.msksp.2023.102736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 02/23/2023] [Indexed: 03/20/2023]
|
2
|
Magni N, Collier J, Rice D, McNair P. Neglect-like symptoms and their relationships with other clinical features in people with hand osteoarthritis: An exploratory study. Musculoskelet Sci Pract 2022; 62:102662. [PMID: 36087512 DOI: 10.1016/j.msksp.2022.102662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Symptomatic hand osteoarthritis (OA) is a debilitating condition. Body schema impairments such as neglect-like symptoms have been previously reported in people with symptomatic hand OA, however, little is known about their clinical importance, or relationships with other clinical features. OBJECTIVES The aim of this cross-sectional study was to assess the prevalence of neglect-like symptoms in painful hand OA and their association with measures of depression, pain catastrophising, sleep quality, function, pain interference and pain duration whilst controlling for important covariates. DESIGN Secondary analysis of cross-sectional study. METHODS Logistic regression with age, sex, and worst pain intensity as covariates were utilised to assess differences between participants with and without neglect-like symptoms. RESULTS A total of 121 participants were recruited. Sixty-one percent of participants presented with neglect-like symptoms. Participants with longer pain duration had greater odds of presenting with neglect-like symptoms (OR: 1.10 95%CI: 1.01 to 1.19; p = 0.012). No difference was observed for depression, pain catastrophising, sleep quality, function, or pain interference. CONCLUSIONS A large proportion of participants with symptomatic hand OA reported neglect-like symptoms, the presence of which was associated with longer pain duration.
Collapse
|
3
|
Noton T, Armes H, Mistry R, Tam A, Collier J, Greaney L. 780 Are E-Scooters Safe for Widespread Public Use? A Case Series Examining Severe Facial Injuries Secondary to E-Scooter Accidents. Br J Surg 2022. [DOI: 10.1093/bjs/znac269.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
E-scooter use is becoming commonplace across the UK as an increasing number of towns and cities launch trials with pay-as-you-go e-scooter companies. In addition, e-scooters are cheap method of transport, easily available for an individual to purchase online, without restriction. We present two cases of patients having suffered complex facial injuries secondary to e-scooter accidents.
The first is a 38-year-old male, who was thrown from an e-scooter and had associated loss of consciousness. CT facial bones demonstrated extensive fractures to the bilateral maxillary and frontal sinuses, nasal bones, bilateral orbital floors, and mandible. The Le Fort II and mandibular fractures were fixed in two procedures. The patient has ongoing neuropathic pain around the right mandibular condyle and is receiving input from orthognathic specialists.
The second patient is a 60-year-old male, who collided with the rear of a car and was thrown forward, hitting his face on the tarmac. CT facial bones showed a Le Fort II fracture pattern and a fractured left inferior orbital rim, with extensive surgical emphysema of the face. He underwent plating of the bilateral Le Fort II fractures and application of intermaxillary fixation wires.
With little to no enforcement of personal protective equipment use and safety advice whilst utilising e-scooter services, the number of people suffering serious injuries from using such equipment is set to skyrocket. Increased awareness and education around the danger of e-scooters needs to be addressed and should be prioritised by local authorities and public health services.
Collapse
|
4
|
Magill H, Ioannidi L, Collier J. 811 Dermal Fillers and Delayed Hypersensitivity Following Influenza Vaccine: A Case Report. Br J Surg 2022. [PMCID: PMC9452086 DOI: 10.1093/bjs/znac269.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Background Case Discussion
Collapse
|
5
|
Kluger MT, Skarin M, Collier J, Rice DA, McNair PJ, Seow MY, Connolly MJ. Steroids to reduce the impact on delirium (STRIDE): a double-blind, randomised, placebo-controlled feasibility trial of pre-operative dexamethasone in people with hip fracture. Anaesthesia 2021; 76:1031-1041. [PMID: 33899214 DOI: 10.1111/anae.15465] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2021] [Indexed: 01/18/2023]
Abstract
Neuro-inflammation may be important in the pathogenesis of postoperative delirium following hip fracture surgery. Studies have suggested a potential role for steroids in reducing postoperative delirium; however, the potential efficacy and safety of pre-operative high-dose dexamethasone in this specific population is largely unknown. Conducting such a study could be challenging, considering the multidisciplinary team involvement and the emergency nature of the surgery. The aim of this study was to assess feasibility and effectiveness of dexamethasone given as early as possible following hospital admission for hip fracture, to inform whether a full-scale trial is warranted. This single-centre, randomised, double-blind, placebo-controlled study randomly allocated 79 participants undergoing hip fracture surgery to dexamethasone 20 mg or placebo pre-operatively. Eligibility and recruitment rates, timing of the intervention and adverse events were recorded. Incidence and severity of postoperative delirium were assessed using the 4AT delirium screening tool and the Memorial Delirium Assessment Scale. Postoperative pain, length of stay and mortality were also assessed. The eligibility rate for inclusion was 178/527 (34%), and 57/178 (32%) of eligible patients presented to hospital when no researcher was available (e.g. after-hours, weekends, public holidays). Recruitment was limited mainly by ethical limitations (not including patients with impaired cognition) and lack of weekend staffing. Median (IQR [range]) time from emergency department admission to drug administration was 13.3 (5.9-17.6 [1.8-139.6]) hours. There was a significant difference in delirium severity scores, favouring the dexamethasone group: median (IQR [range]) 5 (3-6 [3-7]) vs. 9 (6-13 [5-14]) in the placebo group, with the probability of superiority effect size being 0.89, p = 0.010. Delirium incidence did not differ between groups: 6/40 (15%) in the dexamethasone group vs. 9/39 (23%) in the placebo group, relative risk (95%CI) 0.65 (0.22-1.65), p = 0.360). A larger randomised controlled trial is feasible and ideally this should include people with existing cognitive impairment, seven days-a-week cover and a multicentre design.
Collapse
|
6
|
Franks E, Melese E, Harbourne B, Halvorsen L, Cederberg R, Collier J, Firmino N, Luu J, Unni A, Oh MH, Lam V, Krystal G, Abraham N, Bennewith K, Lockwood W. Abstract A38: Oncogenes drive production of immunosuppressive cytokines to facilitate lung cancer progression. Cancer Immunol Res 2020. [DOI: 10.1158/2326-6074.tumimm18-a38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Lung cancer development is driven by the expression of mutant oncogenes, with EGFR and KRAS being the most frequent mutations in lung adenocarcinoma. However, these mutations alone are not sufficient for tumorigenesis, and additional factors influence tumor development and progression, including the balance of antitumor immune effector cells and protumorigenic immune suppressor cells within the tumor environment. We hypothesized that oncogene signaling regulates the production of cytokines by tumor cells in order to modulate the immune microenviroment and promote lung tumor development. We used CIBERSORT to quantify 22 immune cell types in over 300 human lung adenocarcinomas (LUAD) and 100 matched normal lung tissues. Cells associated with inflammatory or antitumor response, macrophages (M1, M0), T follicular helper cells, and plasma cells, were enriched in LUAD compared to normal lung tissue. Additionally, immunosuppressive regulatory T cells (Tregs) were significantly enriched in LUAD tumors, even at the early stages. To identify cytokines that could be induced by oncogenic signaling early in lung tumorigenesis, we used normal cells expressing doxycycline-inducible mutant KRASG12V mutant EGFRL858R or wild-type EGFR and analyzed cytokine production with a multiplex assay (LUMINEX). Induction of oncogenic signaling in normal cells rapidly increased production of cytokines CCL5 and CCL2. These are capable of recruiting a variety of cells types, including Tregs. In KRAS mutant lung cancer cells, disruption of oncogene signaling with a MEK inhibitor (trametinib) decreased CCL5 production. We used transgenic mice that spontaneously develop lung tumors in response to tetracycline-inducible expression of mutant EGFRDelEx19 or mutant KRASG12V in type II alveolar cells to investigate immune cell populations that may change in response to oncogene-driven lung tumorigenesis. We found that Tregs were increased in the lungs of tumor-bearing mice. These Tregs express the CCL5 receptor, CCR5. Several cytokines were elevated in bronchioalveolar lavage fluid or in lung lysates of tumor-bearing mice, including IL-12(p40), CXCL1, CCL2, CCL3 and CCL5. Murine Lewis lung carcinoma (LLC) cells harbor a KRAS mutation and express high levels of CCL5. We are currently investigating the effects of disrupting oncogene signaling or CCL5 expression in LLC cells on cytokine production and immune cell recruitment in vivo using syngeneic implantation of the cells into mice. Our data suggest that oncogenic signaling regulates expression of cytokines in lung tumor cells. Targeted inhibition of cytokines directly or indirectly through oncogenic signaling may represent therapeutic strategies to block the recruitment of immune-suppressive cells to the tumor microenvironment, thereby enhancing the antitumor immune response.
Citation Format: Elizabeth Franks, Etienne Melese, Bryant Harbourne, Liz Halvorsen, Rachel Cederberg, Jenna Collier, Natalie Firmino, Jennifer Luu, Arun Unni, Min Hee Oh, Vivian Lam, Gerry Krystal, Ninan Abraham, Kevin Bennewith, William Lockwood. Oncogenes drive production of immunosuppressive cytokines to facilitate lung cancer progression [abstract]. In: Proceedings of the AACR Special Conference on Tumor Immunology and Immunotherapy; 2018 Nov 27-30; Miami Beach, FL. Philadelphia (PA): AACR; Cancer Immunol Res 2020;8(4 Suppl):Abstract nr A38.
Collapse
|
7
|
Cederberg RA, So A, Franks E, Collier J, Wadsworth BJ, Hughes MR, McNagny KM, Bennewith KL. Abstract A75: The role of eosinophils in the lung tumor microenvironment. Cancer Immunol Res 2020. [DOI: 10.1158/2326-6074.tumimm18-a75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The use of immunotherapy to treat lung cancer is becoming increasingly common, highlighting the importance of the immune system in the lung tumor microenvironment. The lungs are host to a variety of immune cell subsets, including eosinophils (Eo), which are a population of innate immune cells that exert cytotoxic effector functions through the release of secretory granules and participate in tissue homeostasis and immunity. Despite the presence of Eo in solid tumors and their prevalence in the lung, the role of Eo in lung cancer is both controversial and largely unexplored. The Bennewith lab has previously found that mice with elevated lung Eo have decreased tumor growth in a model of breast cancer lung metastasis. We hypothesize that Eo play a protective role in lung cancer progression.
Methods: In collaboration with Dr. Kelly McNagny (UBC), we used IL-5Tg transgenic mice that overexpress IL-5 and have a systemic expansion of Eo, ddGATA transgenic mice which are Eo-deficient, and ddGATA/IL-5Tg double-transgenic mice (excess IL-5 but no Eo) to study lung cancer. Lewis Lung carcinoma (LLC) cells were injected intravenously (IV) to seed the lungs. After three weeks, we harvested lungs and used flow cytometry to quantify immune cell subsets in the lungs. Additionally, we used clonogenic assays and histology to quantify lung tumor growth.
Results: We confirmed that naive ddGATA and ddGATA/IL-5Tg mice have no lung Eo. In contrast, IL-5Tg mice have a 100-fold expansion of Eo in the lungs, and these Eo express higher levels of the Eo activation marker CD11b compared to wild-type (WT) mice. Naive IL-5Tg and ddGATA/IL-5Tg mice had an increased proportion of lung B-1 B cells, as well as an increase in the expression of the apoptosis-inducing cell surface molecule FasL. The absence of Eo in ddGATA mice did not impact lung colonization of LLC cells. Though there was a substantial expansion of Eo in the lungs of IL-5Tg mice compared to WT mice, there was no change in the number of lung-infiltrating Eo three weeks after IL-5Tg and WT mice were injected IV with LLC cells. IL-5Tg mice injected IV with LLC cells had an increase in the total number of lung-infiltrating Bconv and B-1 B cells compared to naive mice, whereas there was no change in B cell subsets between naive and LLC IV injected WT mice.
Conclusions: Though Eo may play an antitumorigenic role in the presence of excess IL-5, the absence of Eo in ddGATA mice did not result in an increase in lung tumor burden. This suggests that Eo need to be activated and expanded to exert an antitumorigenic effect, or that the expansion of B cells in IL-5Tg mice is responsible for the decrease in lung tumor growth in IL-5Tg mice relative to WT mice. Illuminating the specific roles Eo and B cells play in lung cancer progression will allow us to better understand the interplay between host immune cells and malignant cells and could reveal new avenues of cancer immunotherapy development.
Citation Format: Rachel A. Cederberg, Alvina So, Elizabeth Franks, Jenna Collier, Brennan J. Wadsworth, Michael R. Hughes, Kelly M. McNagny, Kevin L. Bennewith. The role of eosinophils in the lung tumor microenvironment [abstract]. In: Proceedings of the AACR Special Conference on Tumor Immunology and Immunotherapy; 2018 Nov 27-30; Miami Beach, FL. Philadelphia (PA): AACR; Cancer Immunol Res 2020;8(4 Suppl):Abstract nr A75.
Collapse
|
8
|
Divoky M, Pilar J, Hanus M, Navratil P, Sawicka-Chyla M, De Vido M, Phillips PJ, Ertel K, Butcher T, Fibrich M, Green JT, Koselja M, Preclikova J, Kubat J, Houzvicka J, Rus B, Collier J, Lucianetti A, Mocek T. Performance comparison of Yb:YAG ceramics and crystal gain material in a large-area, high-energy, high average-power diode-pumped laser. OPTICS EXPRESS 2020; 28:3636-3646. [PMID: 32122028 DOI: 10.1364/oe.379713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 01/15/2020] [Indexed: 06/10/2023]
Abstract
We compare for the first time the influence of different Yb:YAG gain media on the performance of a large-area, high average-power laser system with an output energy of up to 6 J. Monocrystalline slabs grown by a new technique without central growth defect are compared with ceramics. Small signal gain, maximum output energy and thermal lensing are compared for ceramic slabs with co-sintered amplified spontaneous emission (ASE) absorber cladding, monocrystalline slab with and without optically bonded ASE absorber cladding, and surface structured monocrystalline slabs. We show that these large monocrystals with optically bonded absorber cladding have similar performance to cladded ceramics, so far the only material for high-energy Yb:YAG lasers.
Collapse
|
9
|
Aboushelbaya R, Glize K, Savin AF, Mayr M, Spiers B, Wang R, Collier J, Marklund M, Trines RMGM, Bingham R, Norreys PA. Orbital Angular Momentum Coupling in Elastic Photon-Photon Scattering. PHYSICAL REVIEW LETTERS 2019; 123:113604. [PMID: 31573265 DOI: 10.1103/physrevlett.123.113604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/20/2019] [Indexed: 06/10/2023]
Abstract
In this Letter, we investigate the effect of orbital angular momentum (OAM) on elastic photon-photon scattering in a vacuum for the first time. We define exact solutions to the vacuum electromagnetic wave equation which carry OAM. Using those, the expected coupling between three initial waves is derived in the framework of an effective field theory based on the Euler-Heisenberg Lagrangian and shows that OAM adds a signature to the generated photons thereby greatly improving the signal-to-noise ratio. This forms the basis for a proposed high-power laser experiment utilizing quantum optics techniques to filter the generated photons based on their OAM state.
Collapse
|
10
|
Villamaina R, Liu S, Nova I, Tronconi E, Ruggeri MP, Collier J, York A, Thompsett D. Speciation of Cu Cations in Cu-CHA Catalysts for NH3-SCR: Effects of SiO2/AlO3 Ratio and Cu-Loading Investigated by Transient Response Methods. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02578] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
11
|
Cornpropst M, Dobo S, Collis P, Collier J, Sheridan W. PHARMACOKINETICS AND PHARMACODYNAMICS OF BCX7353, AN ORAL PLASMA KALLIKREIN INHIBITOR, IN HEALTHY JAPANESE SUBJECTS. Ann Allergy Asthma Immunol 2018. [DOI: 10.1016/j.anai.2018.09.106] [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]
|
12
|
Matt D, Graff D, Collier J, Wilkerson B. Extended culture to day 7 contributes to pregnancy outcome in PGT-A cycles. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.1204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
13
|
Watson L, Reed A, Jakharia-Shah N, Brennan P, Hammond D, Collier J. Publication of scientific research presented at scientific meetings of the British Association of Oral and Maxillofacial Surgeons: 10 years on – have we published or perished? Br J Oral Maxillofac Surg 2018; 56:611-614. [DOI: 10.1016/j.bjoms.2018.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 06/21/2018] [Indexed: 11/25/2022]
|
14
|
Oláhová M, Collier J, Heidler J, Thompson K, Lightowlers R, Chrzanowska-Lightowlers Z, Wittig I, Taylor R. CRISPR/Cas9-mediated knockout of RTN4IP1 leads to a severe Complex I assembly defect. Neuromuscul Disord 2018. [DOI: 10.1016/s0960-8966(18)30388-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
15
|
Franks E, Halvorsen E, Melesse E, Unni A, Collier J, Oh M, Lam V, Krystal G, English J, Lam W, Lam S, Abraham N, Bennewith K, Lockwood W. MA 05.12 Oncogenic Drivers Induce Production of CCL5 to Recruit Regulatory T-Cells Early in Lung Cancer Progression. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
16
|
McDaid LA, Collier J, Platt MJ. Unique identifiers needed to make national data sets fit for public health purposes: the example of subsequent teenage pregnancy in England and Wales. Public Health 2017; 153:58-60. [PMID: 28938187 DOI: 10.1016/j.puhe.2017.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/07/2017] [Indexed: 11/19/2022]
|
17
|
Matt D, Graff D, Collier J, Wilkerson B. Frequent incubator openings have no effect on blastocyst development rate. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
18
|
Bartlett D, Galgut Y, Lobsey J, Hall T, Collier J, Pearson J, Rutherford D, Nguyen B, Wong K. 0393 COGNITIVE BEHAVIOR THERAPY FOR INSOMNIA ADMINISTERED BY PRACTICE NURSES IN RURAL NEW SOUTH WALES AUSTRALIA. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
19
|
Senger K, Pham VC, Varfolomeev E, Hackney JA, Corzo CA, Collier J, Lau VWC, Huang Z, Hamidzhadeh K, Caplazi P, Peng I, Setiadi AF, Francis R, Paler-Martinez A, Kwon YC, Ramirez-Carrozzi V, Sun Y, Grigg PW, Roose-Girma M, Jeet S, Barck KH, Pham A, Ota N, Ha C, Stinson J, Guillory J, Tam L, Modrusan Z, Emson C, McKenzie BS, Townsend MJ, Carano RAD, Warming S, Vucic D, DeVoss J, Lee WP, Lill JR, Zarrin AA. The kinase TPL2 activates ERK and p38 signaling to promote neutrophilic inflammation. Sci Signal 2017; 10:10/475/eaah4273. [PMID: 28420753 DOI: 10.1126/scisignal.aah4273] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Tumor progression locus 2 (TPL2; also known as MAP3K8) is a mitogen-activated protein kinase (MAPK) kinase kinase (MAP3K) that phosphorylates the MAPK kinases MEK1 and MEK2 (MEK1/2), which, in turn, activate the MAPKs extracellular signal-regulated kinase 1 (ERK1) and ERK2 (ERK1/2) in macrophages stimulated through the interleukin-1 receptor (IL-1R), Toll-like receptors (TLRs), or the tumor necrosis factor receptor (TNFR). We describe a conserved and critical role for TPL2 in mediating the effector functions of neutrophils through the activation of the p38 MAPK signaling pathway. Gene expression profiling and functional studies of neutrophils and monocytes revealed a MEK1/2-independent branch point downstream of TPL2 in neutrophils. Biochemical analyses identified the MAPK kinases MEK3 and MEK6 and the MAPKs p38α and p38δ as downstream effectors of TPL2 in these cells. Genetic ablation of the catalytic activity of TPL2 or therapeutic intervention with a TPL2-specific inhibitor reduced the production of inflammatory mediators by neutrophils in response to stimulation with the TLR4 agonist lipopolysaccharide (LPS) in vitro, as well as in rodent models of inflammatory disease. Together, these data suggest that TPL2 is a drug target that activates not only MEK1/2-dependent but also MEK3/6-dependent signaling to promote inflammatory responses.
Collapse
|
20
|
Lima B, Hall S, Gonzalez-Stawinski G, Collier J, Tecson K, Kale P, Still S, Sheikh A, Baxter R, Joseph S. Postoperative Vasoplegia Is Strongly Associated with Short and Long Term Outcomes in Patients Receiving Left Ventricular Assist Device (LVAD) Therapy. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
21
|
Lima B, Collier J, Shaikh A, Tecson K, Still S, Baxter R, Felius J, Hall S, Gonzalez-Stawinski G, Joseph S. Predictors of Acute Kidney Injury Following Left Ventricular Assist Device Implantation. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
22
|
Culver EL, Wang LM, Bungay H, Chapman RW, Collier J. A rare cause of colonic thickening and lymphadenopathy. Gut 2017; 66:78. [PMID: 27353744 DOI: 10.1136/gutjnl-2016-311433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Revised: 06/02/2016] [Accepted: 06/06/2016] [Indexed: 12/08/2022]
|
23
|
Cornpropst M, Collis P, Collier J, Babu YS, Wilson R, Zhang J, Fang L, Zong J, Sheridan WP. Safety, pharmacokinetics, and pharmacodynamics of avoralstat, an oral plasma kallikrein inhibitor: phase 1 study. Allergy 2016; 71:1676-1683. [PMID: 27154593 DOI: 10.1111/all.12930] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Avoralstat is a potent small-molecule oral plasma kallikrein inhibitor under development for treatment of hereditary angioedema (HAE). This first-in-human study evaluated the safety, tolerability, pharmacokinetics, and pharmacodynamics of avoralstat. METHODS This double-blind, placebo-controlled, ascending-dose cohort trial evaluated avoralstat single doses of 50, 125, 250, 500, and 1000 mg and multiple doses up to 2400 mg daily (100, 200, 400, and 800 mg every 8 h [q8 h] up to 7 days). RESULTS Avoralstat (n = 71) was generally well tolerated with no signals for a safety concern; there were no serious adverse events (AEs) or discontinuations due to AEs, and compared to placebo (n = 18), no notable difference in AEs. Four moderate severity AEs were reported in two subjects; syncope after a single 250 mg dose (one subject) and abdominal pain, back pain, and eczema after multiple doses of 800 mg avoralstat (one subject). For multiple-dose cohorts, the incidence of gastrointestinal AEs was highest at the 2400 mg/day dose. Elimination of avoralstat was bi-exponential with a terminal half-life of 12-31 h. Inhibition of plasma kallikrein was observed at all doses, and the degree of inhibition was highly correlated with avoralstat concentrations (R = 0.93). Mean avoralstat concentrations at doses ≥400 mg q8 h met or exceeded plasma kallikrein EC50 values throughout the dosing interval. CONCLUSION Avoralstat was well tolerated, and drug exposure was sufficient to meet target levels for inhibition of plasma kallikrein. Based on these results, the 400 mg q8 h dose was selected for further evaluation in patients with HAE.
Collapse
|
24
|
Richardson C, Collier J, Niall K. The smartlock hybrid maxillo-mandibular fixation system – A new device for mandibular-maxillary fixation. Int J Surg 2016. [DOI: 10.1016/j.ijsu.2016.08.502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
25
|
Bast F, Collier S, Chadha P, Collier J. Septic arthritis of the temporomandibular joint as a complication of acute otitis media in a child: A rare case and the importance of real-time PCR for diagnosis. Int J Pediatr Otorhinolaryngol 2015; 79:1942-5. [PMID: 26340928 DOI: 10.1016/j.ijporl.2015.08.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 08/05/2015] [Accepted: 08/06/2015] [Indexed: 12/21/2022]
Abstract
We document the case of a 7-year-old boy who presented with pain in his left ear and trismus after a diagnosis of acute otitis media one week previously. His blood inflammatory markers were raised and magnetic resonance imaging (MRI) showed significant left temporomandibular joint effusion and partial attenuation of the left mastoid. A clinical diagnosis of septic arthritis of the TMJ was made and the patient was commenced on broad-spectrum antibiotics. Analysis using real time PCR enabled identification of the offending organism, confirmation of the diagnosis and antibiotic treatment to be specifically tailored for treatment.
Collapse
|