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Ren Y, Ye J, Xiong W, Zuo J, He Y, Tan M, Yuan Y. Adjuvant radiotherapy for positive lymph nodes of oesophageal squamous cell carcinoma: Can it earn promising benefits at long-term follow-up? Cancer Radiother 2018; 22:140-147. [PMID: 29454737 DOI: 10.1016/j.canrad.2017.09.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 08/29/2017] [Accepted: 09/08/2017] [Indexed: 12/22/2022]
Abstract
PURPOSE The value of adjuvant radiotherapy for patients with positive lymph nodes after curative resection of oesophageal squamous cell carcinoma is controversial. This study aims to investigate its long-term benefits in a specific cohort. PATIENTS AND METHODS The charts between 1990 and 2003 from patients with positive lymph nodes were retrospectively reviewed. Those subjects were divided into adjuvant radiotherapy and surgery alone groups, with two subgroups defined by radiation dose (cutoff value: 50Gy). Overall survival, disease-free survival and locoregional recurrence-free survival were compared between two groups, with predictive factors of overall survival analysed meanwhile. RESULTS In sum, 175 matched patients with 1:2 ratios for group balance were enrolled for final analysis. During the follow-up (median: 37.0 months), 143 (81.7%) deaths were recorded, with 70.6% of deaths from cancer progression. The median overall survival time (19.5, 4 to 172 months) was not significantly different between the two groups (18.9 vs. 20.0 months, P=0.179). However, the disease-free survival time was significantly shorter in the adjuvant radiotherapy group than that in the control group (median, 11.5 vs. 14.9 months; P=0.001), with the locoregional recurrence-free survival time impressively prolonged (median: 18.3 vs. 16.5 months; P=0.022). Age (P=0.030), number (P=0.005) and ratio (P=0.002) of positive lymph nodes were associated with overall survival, but radiation dose was not (P=0.204). CONCLUSION Adjuvant radiotherapy with low- or high-dose did not improve survival compared with surgery alone. However, radiotherapy was effective to control locoregional recurrence, and could be applied as salvage therapy when recurrence event occurred.
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Tan M, Shtukenberg AG, Zhu S, Xu W, Dooryhee E, Nichols S, Ward MD, Kahr B, Zhu Q. ROY revisited, again: the eighth solved structure. Faraday Discuss 2018; 211:477-491. [DOI: 10.1039/c8fd00039e] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
X-ray powder diffraction and crystal structure prediction algorithms are used in synergy to establish the crystal structure of the eighth polymorph of ROY, form R05.
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Iqbal MA, Tan M, Krzczanowicz L, El-Taher AE, Forysiak W, Ania-Castañón JD, Harper P. Noise and transmission performance improvement of broadband distributed Raman amplifier using bidirectional Raman pumping with dual order co-pumps. OPTICS EXPRESS 2017; 25:27533-27542. [PMID: 29092224 DOI: 10.1364/oe.25.027533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 10/12/2017] [Indexed: 06/07/2023]
Abstract
We demonstrate a low noise bidirectional broadband distributed Raman pumping scheme combining dual order co-propagated pumps without increasing the signal RIN level. The noise performance improvement is compared experimentally and numerically with conventional counter-pumping only and bidirectional pumping with only a 2nd order co-pump for a 70nm bandwidth and 61.5km distributed Raman amplifier. The proposed broadband pumping scheme shows 1.2dB maximum noise figure improvement and extends the long-haul transmission reach up to 6150km with a Q-factor improvement of ~0.7dB compared with counter-pumping only scheme.
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Stephens MFC, Tan M, Gordienko V, Harper P, Doran NJ. In-line and cascaded DWDM transmission using a 15dB net-gain polarization-insensitive fiber optical parametric amplifier. OPTICS EXPRESS 2017; 25:24312-24325. [PMID: 29041376 DOI: 10.1364/oe.25.024312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 09/18/2017] [Indexed: 06/07/2023]
Abstract
We demonstrate and characterize polarization-division multiplexed (PDM) DWDM data transmission for the first time in a range of systems incorporating a net-gain polarization-insensitive fiber optical parametric amplifier (PI-FOPA) for loss compensation. The PI-FOPA comprises a modified diversity-loop architecture to achieve 15dB net-gain, and up to 2.3THz (~18nm) bandwidth. Three representative systems are characterized using a 100Gb/s PDM-QPSK signal in conjunction with emulated DWDM neighbouring channels: (a) a 4x75km in-line fiber transmission system incorporating multiple EDFAs and a single PI-FOPA (b) N cascaded PI-FOPA amplification stages in an unlevelled Nx25km recirculating loop arrangement, with no EDFAs used within the loop signal path, and (c) M cascaded PI-FOPA amplification stages as part of an Mx75.6km gain-flattened recirculating loop system with the FOPA compensating for the transmission fiber loss, and EDFA compensation for loop switching and levelling loss. For the 4x75km in-line system (a), we transmit 45x50GHz-spaced signals ('equivalent' data-rate of 4.5Tb/s) with average OSNR penalty of 1.3dB over the band at 10-3 BER. For the unlevelled 'FOPA-only' 25.2km cascaded system (b), we report a maximum of eight recirculations for all 10x100GHz-spaced signals, and five recirculations for 20x50GHz-spaced signals. For the 75.6km levelled system
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Aydin Cil M, Gokalp K, Yayla A, Tan M. MON-P174: Relationship Between Nutrition and Psychological Status in Dialysis Patient. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)30913-5] [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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Martin AT, Nichols SM, Li S, Tan M, Kahr B. Double cone of eigendirections in optically active ethylenediammonium selenate crystals. J Appl Crystallogr 2017; 50:1117-1124. [PMID: 28808435 PMCID: PMC5541354 DOI: 10.1107/s1600576717007865] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 05/26/2017] [Indexed: 11/10/2022] Open
Abstract
Circular birefringence (CB) is generally responsible for only a small perturbation to the state of light polarization in crystals that also exhibit linear birefringence (LB). As such, the magnetoelectric tensor of gyration, which gives rise to CB and optical activity, is less well determined than the electric permittivity tensor in optical models of the Mueller matrix. To visualize the effect of the magnetoelectric tensor on polarimetric measurements, reported here are experimental mappings of the Mueller matrix and of the CB in a new chiral crystal with accidental null LB at an accessible optical frequency. Single crystals of ethylenediammonium selenate (EDSeO4) were synthesized and characterized by X-ray diffraction and Mueller matrix measurements in transmission and reflection. The crystals are isomorphous with the corresponding sulfate salt. They are tetragonal, space group P41(3)212. The constitutive relations of EDSeO4 were recovered using a partial wave summation of incoherent reflections. The extraordinary and ordinary refractive indices cross at 364 nm (3.41 eV), a scenario commonly called the 'isotropic point' or 'iso-index point'. At this wavelength, the magnetoelectric tensor fully describes the polarization transformation, giving rise to a double cone of eigendirections.
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Tan M, Dos Santos ME, Pattison T. 20MEDICAL STUDENTS AS ADVOCATES - IMPROVING CARE FOR OLDER ADULTS. Age Ageing 2017. [DOI: 10.1093/ageing/afx115.20] [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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Mat S, Ng C, Tan M. PSYCHOLOGICAL STATUS MEDIATES THE BIPHASIC RELATIONSHIP BETWEEN OSTEOARTHRITIS AND FALLS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1616] [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
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Moest WT, Kruydenberg C, Tan M, Koster T. X-ChEXIT in screening for occult cancer in patients with a deep vein thrombosis. Eur J Intern Med 2017; 42:e9-e10. [PMID: 28427804 DOI: 10.1016/j.ejim.2017.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 04/11/2017] [Indexed: 11/28/2022]
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Tan M. IMPLEMENTING FALLS PREVENTION IN MALAYSIA. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.196] [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 B, Li Y, Wang C, Tan M, Fan L, Zhao Q, Wang D, Jia N. The clinical value of Vav3 in peripheral blood for predicting lymphatic metastasis of gastric cancer. Br J Biomed Sci 2017; 74:133-137. [PMID: 28513273 DOI: 10.1080/09674845.2017.1278889] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Tan M, Hao JB, Chu H, Wang FM, Song D, Zhu L, Yu F, Li YZ, Song Y, Zhao MH. Genetic variants in FH are associated with renal histopathologic subtypes of lupus nephritis: a large cohort study from China. Lupus 2017; 26:1309-1317. [PMID: 28403670 DOI: 10.1177/0961203317702254] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective Genetic variants in FH (complement factor H) were reported to associate with susceptibility to systemic lupus erythematosus (SLE). This study proposed that the genetic defects of FH in the susceptibility and in the development of lupus nephritis might be different. Methods This study enrolled 334 lupus nephritis patients, 269 SLE patients without clinical renal involvement and 350 controls. Two-step genotyping was performed. First, all the exons of the FH gene were fully sequenced in 100 lupus nephritis patients and 100 healthy controls. Second, genotyping of three common variants reported to be functional, rs1061170, rs800292 and rs6677604, was conducted in all the recruited individuals. Further, analysis of their associations with SLE/lupus nephritis susceptibility and the clinico-pathological parameters in the lupus nephritis group was performed. Results No significant differences were observed in allele and genotype frequencies of the three single nucleotide polymorphisms between lupus patients and controls. There was a significantly higher ratio of CC/CT genotypes of rs1061170 in lupus nephritis patients with class III than in the other two classes (class III vs. class IV vs. class V: 21.0% vs. 9.7% vs. 9.4%; P = .044). The rs6677604-GG genotype was observed to be associated with the absence of anti-ds DNA antibody ( P = .021), and the rs800292-TT genotype was associated with a higher level of circulating C3 ( P = 0.20) in lupus nephritis. Conclusion In an independent cohort, this is the first genetic association analysis focusing on FH genetic variants in Chinese lupus nephritis patients. It was found that the variants in the FH gene might affect the histopathologic subtypes and some clinical features of the disease.
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Sitoh N, Thomas A, Fong CM, Tan M. Is there a role for intraoperative frozen section analysis in the surgical treatment of Multifocal/Multicentric breast cancers? Breast 2017. [DOI: 10.1016/s0960-9776(17)30172-8] [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] Open
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Tan M, Sitoh N, Sitoh Y. Does changing classification for multifocal and multicentric breast cancers alter breast conservation rates? Breast 2017. [DOI: 10.1016/s0960-9776(17)30233-3] [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] Open
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Rees MA, Dunn TB, Kuhr CS, Marsh CL, Rogers J, Rees SE, Cicero A, Reece LJ, Roth AE, Ekwenna O, Fumo DE, Krawiec KD, Kopke JE, Jain S, Tan M, Paloyo SR. Kidney Exchange to Overcome Financial Barriers to Kidney Transplantation. Am J Transplant 2017; 17:782-790. [PMID: 27992110 DOI: 10.1111/ajt.14106] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 10/23/2016] [Accepted: 10/24/2016] [Indexed: 01/25/2023]
Abstract
Organ shortage is the major limitation to kidney transplantation in the developed world. Conversely, millions of patients in the developing world with end-stage renal disease die because they cannot afford renal replacement therapy-even when willing living kidney donors exist. This juxtaposition between countries with funds but no available kidneys and those with available kidneys but no funds prompts us to propose an exchange program using each nation's unique assets. Our proposal leverages the cost savings achieved through earlier transplantation over dialysis to fund the cost of kidney exchange between developed-world patient-donor pairs with immunological barriers and developing-world patient-donor pairs with financial barriers. By making developed-world health care available to impoverished patients in the developing world, we replace unethical transplant tourism with global kidney exchange-a modality equally benefitting rich and poor. We report the 1-year experience of an initial Filipino pair, whose recipient was transplanted in the United states with an American donor's kidney at no cost to him. The Filipino donor donated to an American in the United States through a kidney exchange chain. Follow-up care and medications in the Philippines were supported by funds from the United States. We show that the logistical obstacles in this approach, although considerable, are surmountable.
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Koshy A, Sajeev J, Cosgrave N, Tan M, Rajakariar K, Pham C, Cooke J, Dewey H, Kynt C, Roberts L, Teh A. High-Sensitivity Troponin Elevation in Ischaemic Stroke and Associated Cardiac Abnormalities. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.032] [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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Kam A, Lam P, Haen P, Tan M, Shamsudin A, Murrell G. Preventing brachial plexus injury during shoulder arthroplasty: A real time cadaveric study. J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.01.078] [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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Mat S, Ng C, Tan M. Influence of hip and knee osteoarthritis on dynamic postural control parameters among older fallers. J Rehabil Med 2017; 49:258-263. [DOI: 10.2340/16501977-2202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Koshy A, Sajeev J, Cosgrave N, Pham C, Rajakariar K, Tan M, Cooke J, Dewey H, Roberts L, Teh A. Admission High-Sensitivity Troponin Elevation in Thrombolysed Stroke Patients: An Early Predictor of Disability and Mortality? Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.020] [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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Tan M, Pan JY, Chia HY, Oon HH. Cutaneous protothecosis on the bilateral wrists of a food handler. Clin Exp Dermatol 2016; 42:72-74. [PMID: 28028857 DOI: 10.1111/ced.12975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2016] [Indexed: 12/01/2022]
Abstract
Cutaneous protothecosis is caused by the achlorophyllic algae Prototheca, typically presenting as a localized plaque in immunocompetent individuals. We report a patient with bilateral erythematous plaques and pustules on her forearms, which had initially been treated with steroids for presumed eczema. Histology showed spherical spore-like bodies with internal morula-like septation, which were positive for periodic-acid-Schiff (PAS) staining, consistent with cutaneous protothecosis. Definitive treatment with oral itraconazole resulted in resolution of the lesions.
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Ding Y, Li P, He Q, Wei H, Wu T, Xia D, Tan M, Shi Y, Su X. The CD4 + T-lymphocyte count is an important predictor for the prognosis of cryptococcosis. Eur J Clin Microbiol Infect Dis 2016; 36:897-904. [PMID: 28035481 PMCID: PMC5395594 DOI: 10.1007/s10096-016-2880-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 12/14/2016] [Indexed: 12/01/2022]
Abstract
There is great heterogeneity of immunity among patients with cryptococcosis, and severe immunodeficiency can lead to negative clinical outcomes. Underlying disease is a poor surrogate for immune status and inferior in predicting an individual’s prognosis. This study was intended to determine whether T-lymphocyte subgroups would be more suitable indicators regarding the severity of infection and clinical outcomes of such patients. We retrieved clinical data on 101 patients with cryptococcosis and compared the validity of multiple parameters (underlying disease and T-lymphocyte subgroups) in predicting the severity of infection and clinical outcome in these patients. For patients with CD4+ T-lymphocyte counts lower than 400/μL, the odds ratio of disseminated cryptococcosis was 23.3 (P = 0.005). There was a moderate negative correlation between CD4+ T-cell count and Apache II score (−0.609, P < 0.001). Mortality among patients with low levels of CD4+ T lymphocytes was significantly higher than among those with normal levels (23.8% vs 5.3%, P = 0.016). However, the difference was not significant if the patients were grouped by underlying disease (P = 0.067). The CD4+ T-lymphocyte count in peripheral blood is a simple and more accurate biomarker for predicting severity of infection and clinical outcome in patients with cryptococcosis.
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Burress ED, Holcomb JM, Tan M, Armbruster JW. Ecological diversification associated with the benthic‐to‐pelagic transition by North American minnows. J Evol Biol 2016; 30:549-560. [DOI: 10.1111/jeb.13024] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 11/28/2016] [Indexed: 12/11/2022]
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Zhang D, Jin N, Sun W, Li X, Liu B, Xie Z, Qu J, Xu J, Yang X, Su Y, Tang S, Han H, Chen D, Ding J, Tan M, Huang M, Geng M. Phosphoglycerate mutase 1 promotes cancer cell migration independent of its metabolic activity. Oncogene 2016; 36:2900-2909. [PMID: 27991922 DOI: 10.1038/onc.2016.446] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 10/10/2016] [Indexed: 12/28/2022]
Abstract
Phosphoglycerate mutase 1 (PGAM1) is a glycolytic enzyme that coordinates glycolysis and biosynthesis to promote cancer growth via its metabolic activity. Here, we report the discovery of a non-metabolic function of PGAM1 in promoting cancer metastasis. A proteomic study identified α-smooth muscle actin (ACTA2) as a PGAM1-associated protein. PGAM1 modulated actin filaments assembly, cell motility and cancer cell migration via directly interacting with ACTA2, which was independent of its metabolic activity. The enzymatically inactive H186R mutant retained its association with ACTA2, whereas 201-210 amino acids deleted PGAM1 mutant lost the interaction with ACTA2 regardless of intact metabolic activity. Importantly, PGAM1 knockdown decreased metastatic potential of breast cancer cells in vivo and PGAM1 and ACTA2 were jointly associated with the prognosis of breast cancer patients. Together, this study provided the first evidence revealing a non-metabolic function of PGAM1 in promoting cell migration, and gained new insights into the role of PGAM1 in cancer progression.
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Mourgues C, Tan M, Hein S, Al-Harbi K, Aljughaiman A, Grigorenko E. The relationship between analytical and creative cognitive skills from middle childhood to adolescence: Testing the threshold theory in the Kingdom of Saudi Arabia. LEARNING AND INDIVIDUAL DIFFERENCES 2016. [DOI: 10.1016/j.lindif.2015.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ghosh-Swaby O, Tan M, Bagai A, Yan A, Mehta S, Fisher H, Cohen E, Huynh T, Cantor W, LeMay M, Dery J, Welsh R, Goodman S, Udell J. MARITAL STATUS, LIVING ARRANGEMENT, AND OUTCOMES FOLLOWING MYOCARDIAL INFARCTION: OBSERVATIONS FROM THE CANADIAN OBSERVATIONAL ANTIPLATELET STUDY (COAPT). Can J Cardiol 2016. [DOI: 10.1016/j.cjca.2016.07.350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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