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Lang CCV, Masenga J, Semango G, Kaderbhai H, Li N, Tan G, Heider A, Guttman-Yassky E, Grimm F, Schmid-Grendelmeier P, Brüggen MC. Evidence for different immune signatures and sensitization patterns in sub-Saharan African vs. Central European atopic dermatitis patients. J Eur Acad Dermatol Venereol 2020; 35:e140-e142. [PMID: 32780875 DOI: 10.1111/jdv.16871] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Liu J, Sugimoto K, Cao Y, Mori M, Guo L, Tan G. Serum Sphingosine 1-Phosphate (S1P): A Novel Diagnostic Biomarker in Early Acute Ischemic Stroke. Front Neurol 2020; 11:985. [PMID: 33013650 PMCID: PMC7505997 DOI: 10.3389/fneur.2020.00985] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 07/28/2020] [Indexed: 01/08/2023] Open
Abstract
Background: Sphingosine 1-phosphate (S1P) is a lipid metabolite that mediates various physiological processes, including vascular endothelial cell function, inflammation, coagulation/thrombosis, and angiogenesis. As a result, S1P may contribute to the pathogenesis of stroke. Objective: This study aimed to evaluate the diagnostic value of serum S1P in acute stroke. Method: A total of 72 patients with ischemic stroke, 36 patients with hemorrhagic stroke, and 65 controls were enrolled. Serum S1P was detected by enzyme-linked immunosorbent assay (ELISA). Results: Receiver operating characteristic curve analysis demonstrated that serum S1P could discriminate ischemic stroke from hemorrhagic stroke in both total population and subgroup analyses of samples obtained within 24 h of symptom onset (subgroup < 24h) (area under curve, AUCTotal = 0.64, P = 0.017; AUCSubgroup < 24h = 0.91, P < 0.001) and controls (AUCTotal = 0.62, P = 0.013; AUCSubgroup <24h = 0.83, P < 0.001). Furthermore, S1P showed higher efficacy than high-density lipoprotein cholesterol (HDL-C) in discriminating ischemic stroke from controls in the total population (PS1P = 0.013, PHDL−C = 0.366) and in the subgroup analysis (i.e., <24 h; PS1P < 0.001, PHDL−C = 0.081). Additionally, lower serum S1P was associated with cervical artery plaques (P = 0.021) in controls and with dyslipidemia (P = 0.036) and milder neurological impairment evaluated by the National Institute of Health Stroke Scale (NIHSS, P = 0.047) in the ischemic stroke group. Conclusions: The present study preliminarily investigated the diagnostic value of serum S1P in acute stroke. Decreased serum S1P may become a potential biomarker for early acute ischemic stroke and can indicate disease severity.
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Lloyd TD, Neal‐Smith G, Fennelly J, Claireaux H, Bretherton C, Carr AJ, Murphy M, Kendrick BJ, Palmer AJR, Wong J, Sharma P, Osei‐Bonsu PK, Ashcroft G, Baigent T, Shirland E, Espey R, Stokes M, Liew I, Dhawal A, Watchorn D, Lum J, Qureshi M, Khaled AS, Kauser S, Hodhody G, Rogers S, Haywood‐Alexander B, Sheikh G, Mahapatra P, Twaij H, Chicco M, Arnaout F, Atherton T, Mutimer J, Sinha P, Oliver E, Stedman T, Gadd R, Kutuzov V, Sattar M, Robiati L, Plastow R, Howe T, Hassan A, Lau B, Collins J, Doshi A, Tan G, Baskaran D, Hari Sunil Kumar K, Agarwal R, Horner M, Gwyn R, Masud S, Beaumont O, Pilarski A, Lebe M, Dawson‐Bowling S, Nolan D, Tsitskaris K, Beamish RE, Jordan C, Alsop S, Hibbert E, Deshpande G, Gould A, Briant‐Evans T, Kilbane L, Crowther I, Ingoe H, Naisbitt A, Gourbault L, Muscat J, Goh EL, Gill J, Elbashir M, Modi N, Archer J, Ismael S, Petrie M, O'Brien H, McCormick M, Koh NP, Lloyd T, King A, Ikram A, Peake J, Yoong A, Rye DS, Newman M, Naraen A, Myatt D, Kapur R, Sgardelis P, Kohli S, Culverhouse‐Mathews M, Haynes S, Boden H, Purmah A, Shenoy R, Raja S, Koh NP, Donovan R, Yeomans D, Ritchie D, Larkin R, Aladwan R, Hughes K, Unsworth R, Cooke R, Samra I, Barrow J, Michael K, Byrne F, Anwar R, Karatzia L, Drysdale H, Wilson H, Jones R, Dass D, Liaw F, Aujla R, Kheiran A, Bell K, Ramavath AL, Telfer R, Nachev K, Lawrence H, Garg V, Shenoy P, Lacey A, Byrom I, Simons M, Manning C, Cheyne N, Williams J. Peri‐operative administration of tranexamic acid in lower limb arthroplasty: a multicentre, prospective cohort study. Anaesthesia 2020; 75:1050-1058. [DOI: 10.1111/anae.15056] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2020] [Indexed: 12/20/2022]
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Toliman P, Phillips S, de Jong S, O'Neill T, Tan G, Brotherton J, Saville M, Kaldor J, Vallely A, Tabrizi S. Evaluation of p16/Ki-67 dual-stain cytology performed on self-collected vaginal and clinician-collected cervical specimens for the detection of cervical pre-cancer. Clin Microbiol Infect 2020; 26:748-752. [DOI: 10.1016/j.cmi.2019.10.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 10/05/2019] [Accepted: 10/16/2019] [Indexed: 12/19/2022]
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Zhuang K, Patel A, Tay K, Irani F, Matchar D, Sivapragasam N, Pua U, Sum L, Tze Tec C, Tan G, Chan E, Win H, Burgmans M, Gogna A, Damodharan K, Chan S, Too C, Karaddi Venkatanarasimha N, Quek L, Gummalla K, Siew Ping C, Tan B. 4:12 PM Abstract No. 50 Quality of life outcomes from a randomized controlled trial comparing drug-eluting balloon to conventional balloon angioplasty for below-the-knee arteries in patients with critical limb ischemia. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Ning Z, Tan G. [Cancer metabolism: a novel perspective on precision diagnosis and treatment for liver cancer]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 2020; 58:31-36. [PMID: 31902167 DOI: 10.3760/cma.j.issn.0529-5815.2020.01.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Metabolic reprogramming has been identified as a hallmark of cancer. Liver is an essential hub in the body for the metabolism of three major nutrients including glucose, lipids and amino acids. Hepatocellular carcinoma(HCC) usually presents a variety of changes in characteristic metabolism, such as increased aerobic glycolysis, enhanced de novo lipid synthesis, glutamine depletion, and oxidative metabolism imbalance, which can provide energy and bio-macromolecular raw materials for rapidly growing and proliferating tumor cells. The process of tumor metabolic reprogramming is regulated by multiple factors, such as alterations in metabolic enzyme activity, abnormal gene expression, and signaling pathway disturbance. Advances in high-throughout metabolomics technology have provided a powerful platform for discovering the novel biomarkers and metabolic targets of HCC. Therefore, in-depth study of the metabolic characteristics and regulatory mechanisms of HCC is critical for the development of novel antimetabolites.
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Budacan AM, Tan G, Cheeseman M, Mofidi R, Wong P. Patients Turned Down for Non-Emergency Abdominal Aortic Aneurysm (AAA) Surgery: Are We Doing The Right Thing? Factors that Influence Decision Making and the Long-term outcome – A Single Centre Experience. Eur J Vasc Endovasc Surg 2019. [DOI: 10.1016/j.ejvs.2019.06.898] [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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Shi Z, Tan G, Wang L. 032 Il-1b is essential for anti-galectin3 antibody induced cutaneous vasculitis in systemic lupus erythematosus. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.108] [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]
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Toliman PJ, Kaldor JM, Badman SG, Phillips S, Tan G, Brotherton JML, Saville M, Vallely AJ, Tabrizi SN. Evaluation of self-collected vaginal specimens for the detection of high-risk human papillomavirus infection and the prediction of high-grade cervical intraepithelial lesions in a high-burden, low-resource setting. Clin Microbiol Infect 2018; 25:496-503. [PMID: 29906593 DOI: 10.1016/j.cmi.2018.05.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 05/08/2018] [Accepted: 05/12/2018] [Indexed: 12/20/2022]
Abstract
OBJECTIVES To compare the performance of self-collected vaginal (V) specimens with clinician-collected cervical (C) specimens for detection of high-risk human papillomavirus (hrHPV) and cervical disease using the Cepheid Xpert HPV, Roche Cobas 4800 HPV and Hologic Aptima HPV assays. METHODS Women aged 30-59 years (n = 1005) were recruited at two clinics in Papua New Guinea, and they provided specimens for testing at point-of-care using the Xpert HPV Test, and for subsequent testing using the Cobas HPV (n = 981) and Aptima HPV (n = 983) assays. Liquid-based cytology was performed on C specimens to predict underlying high-grade squamous intraepithelial lesions (HSIL). V specimen results of each assay were evaluated against a constructed reference standard and for detection of HSIL or worse. RESULTS There was substantial (κ >0.6) agreement in hrHPV detection between V and C specimens across all three assays. The sensitivity, specificity, and positive and negative predictive values of Xpert HPV using self-collected V specimens for the detection of HPV type 16 according to the constructed reference standard were 92.1%, 93.1%, 63.6% and 98.9%, respectively; compared with 90.4%, 94.3%, 67.8% and 98.7% for Cobas 4800 HPV; and 63.2%, 97.2%, 75.0% and 95.3% for Aptima HPV. Similar results were observed for all hrHPV types (combined) and for HPV types 18/45, on all three assays. The detection of any hrHPV using self-collected specimens had high sensitivity (86%-92%), specificity (87%-94%) and negative predictive value (>98%) on all assays for HSIL positivity. CONCLUSIONS Xpert HPV, using self-collected vaginal specimens, has sufficient accuracy for use in point-of-care 'test-and-treat' cervical screening strategies in high-burden, low-resource settings.
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Lee ZJ, Chia SL, Tan G, Soo KC, Teo CCM. Cost Effectiveness of Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy for Management of Colorectal Peritoneal Carcinomatosis. Ann Surg Oncol 2018; 25:2340-2346. [DOI: 10.1245/s10434-018-6508-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Indexed: 01/16/2023]
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Chandran N, Tan G, Chia C, Teo M. Prognostic factors for early recurrences following cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) for colorectal and appendiceal peritoneal metastases. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tan G, Kaya M, Tevlek A, Sargin I, Baran T. Antitumor activity of chitosan from mayfly with comparison to commercially available low, medium and high molecular weight chitosans. In Vitro Cell Dev Biol Anim 2018; 54:366-374. [PMID: 29654403 DOI: 10.1007/s11626-018-0244-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 03/15/2018] [Indexed: 11/29/2022]
Abstract
Insects' cuticles have a potential to be evaluated as a chitin source. Especially adults of aquatic insects like mayflies (order Ephemeroptera) swarm in enormous numbers in artificially lit areas while mating in spring and then die by leaving huge amounts of dead insects' bodies. Here in this study, mayfly corpses were harvested and used for production of low MW chitosan. Dried mayfly bodies had 10.21% chitin content; mayfly chitin was converted into chitosan with efficiency rate of 78.43% (deacetylation degree, 84.3%; MW, 3.69 kDa). Cytotoxicity and anti-proliferative activity of mayfly and commercially available shrimp chitosans (low, medium, and high MW) were determined on L929 fibroblast and three different cancer types including HeLa, A549, and WiDr. Apoptosis and necrosis stimulating potential of mayfly and commercial chitosans were also evaluated on A549 and WiDr cells using acridine orange and propidium iodide dual staining to observe morphological changes in nuclei and thus to reveal the predominant cell death mechanism. The effects of chitosans have varied depending on cell types, concentration, and chitosan derivatives. Mayfly and low MW chitosans had a cytotoxic effect at a concentration of 500 μg mL-1 on non-cancer cells. At concentrations below this value (250 μg mL-1), mayfly and commercial chitosans except high MW one exhibited strong inhibitory activity on cancer cells especially A549 and WiDr cells. Mayfly chitosan induced early and late apoptosis in A549 cells, but late apoptosis and necrosis in WiDr cells. This study suggests that dead bodies of mayflies can be used for production of low MW chitosan with anti-proliferative activity.
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Wei CC, Zhang ST, Tan G, Zhang SH, Liu M. Impact of anemia on in-hospital complications after ischemic stroke. Eur J Neurol 2018; 25:768-774. [PMID: 29431886 DOI: 10.1111/ene.13595] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 02/06/2018] [Indexed: 02/05/2023]
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Tian Y, Jia H, Li S, Wu Y, Guo L, Tan G, Li B. The associations of stroke, transient ischemic attack, and/or stroke-related recurrent vascular events with Lipoprotein-associated phospholipase A2: A systematic review and meta-analysis. Medicine (Baltimore) 2017; 96:e9413. [PMID: 29390564 PMCID: PMC5758266 DOI: 10.1097/md.0000000000009413] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Studies on stroke and lipoprotein-associated phospholipase A2 (Lp-PLA2) have produced conflicting results. OBJECTIVE The aim of the study was to assess the associations of Lp-PLA2 levels (mass and activity) with recurrent vascular events in patients with transient ischemic attack (TIA) and/or first ischemic stroke and with stroke in the general population. METHODS The MEDLINE, Embase, the Cochrane Library, Web of Science, Science Direct, China National Knowledge Infrastructure, China Biology Medical Disc (CBMdisc), and WanFang were searched for prospective observational studies reported until January 2017. Eligible studies reported Lp-PLA2 levels and adjusted risk estimates of recurrent vascular events and/or stroke. Risk ratio (RR) with corresponding 95% confidence intervals (CIs) were used to express the pooled data in a random-effects model. RESULTS A total of 11 studies that comprised 20,284 participants (4,045 were TIA and/or first ischemic stroke patients and 16,239 were residents in general population) were identified, which reported either Lp-PLA2 mass levels (4 studies) or Lp-PLA2 activity levels (10 studies). The pooled RR of recurrent vascular events (467 cases) in TIA and/or first ischemic group was 2.24 (95% CI, 1.33-3.78), whereas the pooled RR of stroke (1604 cases) in the general population was 1.47 (95% CI, 1.10-1.97). The pooled RRs of Lp-PLA2 mass and activity levels with the risk of stroke in the general population were 1.69 (95% CI, 1.03-2.79) and 1.28 (95% CI, 0.88-1.85), respectively. CONCLUSIONS In patients with TIA and first ischemic stroke, elevated Lp-PLA2 activity levels were associated with recurrent vascular events. And in the general population elevated Lp-PLA2 levels were associated with the risk of stroke, although the association between Lp-PLA2 activity levels and the risk of stroke was less profound compared with the corresponding association of stroke risk with the Lp-PLA2 mass levels.
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Huang M, Tan G, Lu S, Huang D, Fu L. Evaluation of effect for obstructive sleep apnea patients treated with soft-hard plastic mandibular advancing oral appliance. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Shi Z, Meng Z, Han Y, Cao C, Tan G, Wang L. The involvement of galectin-3 in skin injury in systemic lupus erythematosus patients. Lupus 2017; 27:621-627. [PMID: 29058991 DOI: 10.1177/0961203317736144] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Shi Z, Tan G, Han Y, Cao C, Wang L. 327 Galectin-3 in keratinocytes participates psoriasis development by recruiting neutrophils into epidermis. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.522] [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]
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Dokainish H, Teo K, Zhu J, Roy A, AlHabib KF, ElSayed A, Palileo-Villaneuva L, Lopez-Jaramillo P, Karaye K, Yusoff K, Orlandini A, Sliwa K, Mondo C, Lanas F, Prabhakaran D, Badr A, Elmaghawry M, Damasceno A, Tibazarwa K, Belley-Cote E, Balasubramanian K, Islam S, Yacoub MH, Huffman MD, Harkness K, Grinvalds A, McKelvie R, Bangdiwala SI, Yusuf S, Campos R, Chacón C, Cursack G, Diez F, Escobar C, Garcia C, Vilamajo OG, Hominal M, Ingaramo A, Kucharczuk G, Pelliza M, Rojas A, Villani A, Zapata G, Bourke P, Lanas F, Nahuelpan L, Olivares C, Riquelme R, Ai F, Bai X, Chen X, Chen Y, Gao M, Ge C, He Y, Huang W, Jiang H, Liang T, Liang X, Liao Y, Liu S, Luo Y, Lu L, Qin S, Tan G, Tan H, Wang T, Wang X, Wei F, Xiao F, Zhang B, Zheng T, Mendoza JA, Anaya MB, Gomez E, de Salazar DM, Quiroz F, Rodríguez M, Sotomayor MS, Navas AT, León MB, Montalvo LF, Jaramillo ML, Patiño EP, Perugachi C, Trujillo Cruz F, Elmaghawry M, Wagdy K, Bhardwaj A, Chaturvedi V, Gokhale GK, Gupta R, Honnutagi R, Joshi P, Ladhani S, Negi P, Roy A, Reddy N, Abdullah A, Hassan MA, Balasinga M, Kasim S, Tan W, Yusoff K, Damasceno A, Banze R, Calua E, Novela C, Chemane J, Akintunde A, Ansa V, Gbadamosi H, Karaye K, Mbakwem A, Mohammed S, Nwafor E, Ojji D, Olunuga T, Sa'idu BOH, Umuerri E, Alcaraz J, Palileo-Villanueva L, Palomares E, Timonera MR, Badr A, Alghamdi S, Alhabib K, Almasood A, Alsaif S, Elasfar A, Ghabashi A, Mimish L, Bester F, Kelbe D, Klug E, Sliwa K, Tibarzawa K, Abdalla O, Dimitri M, Mustafa H, Osman O, Saad A, Mondo C. Global mortality variations in patients with heart failure: results from the International Congestive Heart Failure (INTER-CHF) prospective cohort study. LANCET GLOBAL HEALTH 2017; 5:e665-e672. [DOI: 10.1016/s2214-109x(17)30196-1] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 04/10/2017] [Accepted: 04/26/2017] [Indexed: 12/13/2022]
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Tan G, Seeliger M, Cohen J. Abstract P1-08-12: p53 status and 17q21.3 amplicon formation in HER2-positive breast cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p1-08-12] [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
Breast cancers that overexpress HER2/neu are associated with poor clinical outcome. Treatment of HER2-positive breast cancers with trastuzumab, a monoclonal antibody that antagonizes HER2 receptor signaling, increases patient overall and disease-free survival. While targeted therapy is reasonably effective, resistance to trastuzumab remains a problem, particularly in the case of metastatic disease. Tumor suppressor p53 is the most commonly mutated gene in human cancer and mutations that lead to the stabilization and accumulation of p53 in HER2-positive breast cancers are associated with worse clinical outcome. Another feature of HER2-enriched breast cancers are amplifications of the HER2 locus on chromosome 17q21.3.
Table 1 Wildtype p53Mutated p53No amplification12.8%63.9%17q21.3 amplification13.1%8.7%Table 1: Among 58 cases, Her2-positive tumors with mutated p53 (n=37, 63.9%) occurred at a 4.9-fold higher frequency than amplification of the 17q21.3 gene set (n=8, 13.1%), with significant mutual exclusivity (p=0.005), The patient genomic data set was obtained from the Breast Invasive Carcinoma Study conducted by the TCGA Network (Nature, 2012) and visualized using cBioPortal (MSKCC), Copy alterations of genes were assessed using GISTIC2.0 (Broad Institute) via cBioPortal.
We studied the genomic profiles of 58 HER2-positive breast tumor samples using cBioPortal to determine p53 mutation status. 74.1% of samples expressed mutant p53 and a large fraction of mutations occurred in the key DNA binding domain. We assessed the amplification status of 24 genes within the chromosome 17q21.3 locus as an indicator of amplicon formation, and found that 21.8% of breast tumors demonstrated copy number amplification (Table 2). Mutant p53 tumors with no amplicon formation occurred 5 times more frequently than tumors with only 17q21.3 amplicon formation. These alterations tended to occur exclusive of one another (p=0.005, Table 1). Separately, using gene expression data from Kaplan-Meier Plotter, we observed that alterations in gene expression within the 17q21.3 amplicon can have differential effects on the survival of HER2-positive breast cancer patients (Table 2).
Table 217q21.3 Gene SetHazard RatioP-valueCOL1A11.760.01MBTD10.530.01SPATA200.650.04UBE2Z0.680.07EME10.650.08Table 2: List of relevant genes within the chromosome 17q21.3 amplicon. Genes in this amplicon can influence both beneficial and hazardous survival outcomes in HER2-positive breast cancer patients (n=208). Hazard ratios (HR) were determined from gene expression data available through Kaplan-Meier Plotter (Gyorffy, 2010).
Our data shows that HER2-positive breast cancers can be divided into p53 mutant and non-mutant subsets with p53 mutations relatively exclusive to 17q21.3 gene amplification. However, p53 mutation status and 17q21.3 copy number have a variety of effects on patient outcome. We are interested in understanding the interaction between these two genetic alterations and whether subdividing HER2-positive breast cancer into these subtypes will improve our ability to provide effective therapy to patients.
Citation Format: Tan G, Seeliger M, Cohen J. p53 status and 17q21.3 amplicon formation in HER2-positive breast cancer [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P1-08-12.
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Yu X, Huang Y, Guo Q, Wang Y, Ma H, Zhao Y, Wang Y, Yu X, Tan G, Ma S, Wu X, Xu M, Zhang S, Shang H, Xin S, Zhang X, Wang J, Li L, Wu S, Zhao S, Yang J, Wen H, Sun H, Xiong Y, Wang Y, He J, Liu Q, Li J, Jiang J, Xue F, Han W, Wang Z, Wang Y, Hu Y, Wang L. Clinical motivation and the surgical safety checklist. Br J Surg 2017; 104:472-479. [PMID: 28158915 DOI: 10.1002/bjs.10446] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/09/2016] [Accepted: 11/03/2016] [Indexed: 12/17/2022]
Abstract
Abstract
Background
Although the surgical safety checklist (SSC) has been adopted worldwide, its efficacy can be diminished by poor clinical motivation. Systematic methods for improving implementation are lacking.
Methods
A multicentre prospective study was conducted in 2015 in four academic/teaching hospitals to investigate changes during revision of the SSC for content, staffing and workflow. All modifications were based on feedback from medical staff. Questionnaires were used to monitor dynamic changes in surgeons', nurses' and anaesthetists' perceptions.
Results
Complete information was obtained from 30 654 operations in which the newly developed SSC system was used. Implementation quality was evaluated in 1852 operations before, and 1822 after the changes. The revised SSC content was simplified from 34 to 22 items. Anaesthetists achieved widespread recommendation as SSC coordinators. Completion rates of all stages reached over 80·0 per cent at all sites (compared with 10·2–59·5 per cent at the sign-out stage in the baseline survey). There was a significant change in doctors who participated (for example, surgeon: from 24·6 to 64·5 per cent at one site). The rates of hasty (15·1–33·7 per cent) or casual (0·4–4·4 per cent) checking decreased to less than 6·0 per cent overall. Perceptions about the SSC were studied from 2211 forms. They improved, with a converging trend among the three different professions, to a uniform 80·0 per cent agreeing on the need for its regular use.
Conclusion
Medical staff members are both the users and owners of the SSC. High-quality SSC implementation can be achieved by clinically motivated adaptation.
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Dawn L, Smith C, Tan G, Henry G. 195 Molecular Analysis using PCR to Amplify Extracted 16S Ribosomal DNA Appears to Identify Biofilm on Penile Prosthesis In-Vivo. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.12.183] [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]
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Smith C, Dawn L, Tan G, Henry G. 203 Molecular Analysis Using PCR to Amplify Extracted 16S Ribosomal DNA Appears to Identify Antibiotic Sensitivities / Resistance to Biofilm Found on Penile Prosthesis In-Vivo. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.12.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kolder ICRM, van der Plas-Duivesteijn SJ, Tan G, Wiegertjes GF, Forlenza M, Guler AT, Travin DY, Nakao M, Moritomo T, Irnazarow I, den Dunnen JT, Anvar SY, Jansen HJ, Dirks RP, Palmblad M, Lenhard B, Henkel CV, Spaink HP. A full-body transcriptome and proteome resource for the European common carp. BMC Genomics 2016; 17:701. [PMID: 27590662 PMCID: PMC5009708 DOI: 10.1186/s12864-016-3038-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 08/24/2016] [Indexed: 12/01/2022] Open
Abstract
Background The common carp (Cyprinus carpio) is the oldest, most domesticated and one of the most cultured fish species for food consumption. Besides its economic importance, the common carp is also highly suitable for comparative physiological and disease studies in combination with the animal model zebrafish (Danio rerio). They are genetically closely related but offer complementary benefits for fundamental research, with the large body mass of common carp presenting possibilities for obtaining sufficient cell material for advanced transcriptome and proteome studies. Results Here we have used 19 different tissues from an F1 hybrid strain of the common carp to perform transcriptome analyses using RNA-Seq. For a subset of the tissues we also have performed deep proteomic studies. As a reference, we updated the European common carp genome assembly using low coverage Pacific Biosciences sequencing to permit high-quality gene annotation. These annotated gene lists were linked to zebrafish homologs, enabling direct comparisons with published datasets. Using clustering, we have identified sets of genes that are potential selective markers for various types of tissues. In addition, we provide a script for a schematic anatomical viewer for visualizing organ-specific expression data. Conclusions The identified transcriptome and proteome data for carp tissues represent a useful resource for further translational studies of tissue-specific markers for this economically important fish species that can lead to new markers for organ development. The similarity to zebrafish expression patterns confirms the value of common carp as a resource for studying tissue-specific expression in cyprinid fish. The availability of the annotated gene set of common carp will enable further research with both applied and fundamental purposes. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3038-y) contains supplementary material, which is available to authorized users.
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Tan G, Shimada K, Nozawa Y, Kaneko S, Urakami T, Koyama K, Komura M, Matsuda A, Yoshimoto M. Atomic step-and-terrace surface of polyimide sheet for advanced polymer substrate engineering. NANOTECHNOLOGY 2016; 27:295603. [PMID: 27284690 DOI: 10.1088/0957-4484/27/29/295603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Typical thermostable and flexible polyimide polymers exhibit many excellent properties such as strong mechanical and chemical resistance. However, in contrast to single-crystal substrates like silicon or sapphire, polymers mostly display disordered and rough surfaces, which may result in instability and degradation of the interfaces between thin films and polymer substrates. As a step toward the development of next-generation polymer substrates, we here report single-atom-layer imprinting onto the polyimide sheets, resulting in an ultrasmooth 0.3 nm high atomic step-and-terrace surface on the polyimides. The ultrasmooth polymer substrates are expected to be applied to the fabrication of nanostructures such as superlattices, nanowires, or quantum dots in nanoscale-controlled electronic devices. We fabricate smooth and atomically stepped indium tin oxide transparent conducting oxide thin films on the imprinted polyimide sheets for future use in organic-based optoelectronic devices processed with nanoscale precision. Furthermore, toward 2D polymer substrate nanoengineering, we demonstrate nanoscale letter writing on the atomic step-and-terrace polyimide surface via atomic force microscopy probe scratching.
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Goh W, Teh Y, Tan S, Yong S, Sairi A, Soo K, Tan M, Chan M, Selvaraja S, Sittampalam K, Teh J, Chin F, Sethi V, Ong J, Tan G, Chia C, Teo M, Quek R, Farid M. Treatment and outcomes of melanoma in Asia: Results from National Cancer Centre Singapore. Eur J Cancer 2016. [DOI: 10.1016/j.ejca.2016.03.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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