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Hughes L, Swain PM, Lai T, McEwen JA. It's time to regulate - The importance of accurate surgical-grade tourniquet autoregulation in blood flow restriction exercise applications. Phys Ther Sport 2024; 67:41-46. [PMID: 38508000 DOI: 10.1016/j.ptsp.2024.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/02/2024] [Accepted: 02/02/2024] [Indexed: 03/22/2024]
Abstract
OBJECTIVE Evaluate the efficacy of five common blood flow restriction (BFR) systems to accurately maintain and autoregulate BFR pressure in the tourniquet cuff near target pressure throughout exercise. DESIGN Randomised crossover design. SETTING Laboratory. PARTICIPANTS 15 healthy individuals. OUTCOME MEASURES 1) Percentage of total BFR time that surgical-grade tourniquet autoregulation, defined as automatic and rapid self-regulation of cuff pressure to within ±15 mmHg of initial target pressure within 1 s in the presence of transient pressure changes associated with exercise, was provided; 2) pressure change in the BFR cuff throughout exercise, by comparing the initial target pressure to the measured pressure at completion of BFR exercise. RESULTS One BFR system could provide surgical-grade tourniquet autoregulation for the whole duration (100 ± 0%) of the BFR exercise in all subjects. In two of the five BFR systems evaluated, measured cuff pressure at the end of exercise was not different (p < 0.05) to the initial target pressure. CONCLUSIONS Surgical-grade tourniquet autoregulation is important to consistently and reliably apply a targeted BFR pressure stimulus. This may allow BFR methodology and protocols to be accurately implemented and controlled so that the results can be more meaningfully compared, leading to the potential optimization of applications.
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Affiliation(s)
- L Hughes
- Department of Sport, Exercise & Rehabilitation, Northumbria University, NE18ST, UK.
| | - P M Swain
- Department of Sport, Exercise & Rehabilitation, Northumbria University, NE18ST, UK
| | - T Lai
- Western Clinical Engineering Ltd., Vancouver British Columbia, Canada
| | - J A McEwen
- Western Clinical Engineering Ltd., Vancouver British Columbia, Canada; School of Biomedical Engineering and Departments of Orthopaedics and Electrical and Computer Engineering, University of British Columbia, Vancouver British Columbia Canada
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Lin R, Lin S, Zhu J, Feng S, Wu Q, Fu J, Wang F, Li H, Li X, Zhang G, Yao Y, Xin M, Lai T, Lv X, Chen Y, Lin Y, Hong L, Lin S, Zhao S, Huang C. 290MO Patient controlled analgesia (PCA) versus non-pca intravenous hydromorphone for severe cancer pain: Update from a multi-center, phase III randomized trial, HMORCT09-1. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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3
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Lai T, Manrriquez E, Elvin J, Konecny G, Memarzadeh S. Matched sequential tumor molecular profiling in solid malignancies may impact clinical practice. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lai T. Testing the framework in real life – application for country HSPA process. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.1413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
The ability to use the existing health system assessment tools, HSPA processes and widely available indicators is an important, although not exhaustive, part of the practical application of the framework. With this in mind, we created an annotated template that can be used along with HSPA framework for UHC to facilitate information collection and harmonisation.
This annotated template was tested for Estonia and Azerbaijan with the aim to help with evaluating the transferability of HSPA information between existing approaches and in different settings. More specifically, we tested the extent to which information on assessment areas of the framework can be extracted from the existing sources; the ease of use and clarity of the annotated template; and how the information collected through the annotated template can be combined into a meaningful health system performance assessment, in line with health system goals.
The test showed that the information for Estonia and Azerbaijan could be obtained to complete much of the template. This can be done through a country-led performance assessment process that ensures that the indicative measures in the annotated template are relevant to the country context. The information collected also needs to be assessed in the context of policy priorities of the national health systems. Thus, more detailed guidance on the use of the framework can help to streamline such national processes and clarify the linkages between performance of specific functions and overall health system performance.
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Yin H, Cay-Durgun P, Lai T, Zhu G, Engebretson K, Setiadji R, Green MD, Lind ML. Effect of ZIF-71 ligand-exchange surface modification on biofuel recovery through pervaporation. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122379] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Evans-Lacko S, Courtin E, Fiorillo A, Knapp M, Luciano M, Park AL, Brunn M, Byford S, Chevreul K, Forsman A, Gulacsi L, Haro J, Kennelly B, Knappe S, Lai T, Lasalvia A, Miret M, O'Sullivan C, Obradors-Tarragó C, Rüsch N, Sartorius N, Švab V, van Weeghel J, Van Audenhove C, Wahlbeck K, Zlati A, McDaid D, Thornicroft G. The state of the art in European research on reducing social exclusion and stigma related to mental health: A systematic mapping of the literature. Eur Psychiatry 2020; 29:381-9. [DOI: 10.1016/j.eurpsy.2014.02.007] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 02/16/2014] [Accepted: 02/19/2014] [Indexed: 10/25/2022] Open
Abstract
AbstractStigma and social exclusion related to mental health are of substantial public health importance for Europe. As part of ROAMER (ROAdmap for MEntal health Research in Europe), we used systematic mapping techniques to describe the current state of research on stigma and social exclusion across Europe. Findings demonstrate growing interest in this field between 2007 and 2012. Most studies were descriptive (60%), focused on adults of working age (60%) and were performed in Northwest Europe—primarily in the UK (32%), Finland (8%), Sweden (8%) and Germany (7%). In terms of mental health characteristics, the largest proportion of studies investigated general mental health (20%), common mental disorders (16%), schizophrenia (16%) or depression (14%). There is a paucity of research looking at mechanisms to reduce stigma and promote social inclusion, or at factors that might promote resilience or protect against stigma/social exclusion across the life course. Evidence is also limited in relation to evaluations of interventions. Increasing incentives for cross-country research collaborations, especially with new EU Member States and collaboration across European professional organizations and disciplines, could improve understanding of the range of underpinning social and cultural factors which promote inclusion or contribute toward lower levels of stigma, especially during times of hardship.
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Nicu C, Hardman J, Lai T, Pople J, Bhogal R, Ansell D, Paus R. 576 The role of hepatocyte growth factor in human hair follicle – dermal white adipose tissue communication. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Lai T, Neal A, Grogan T, Soragni A, Memarzadeh S. A novel peptide that restores p53 function may act synergistically with carboplatin in targeting high-grade serous ovarian cancers. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Neal A, Lai T, Nunez M, Lay F, Morselli M, Amneus M, Zakhour M, Moatamed N, Memarzadeh S. Analysis of the endometrial stroma may play an important role in predicting progestin response in complex atypical hyperplasia or grade I adenocarcinoma. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Wong D, Mardock A, Lai T, Sanaiha Y, Sinno A, Benharash P, Cohen J. Disparities in extent of surgical cytoreduction for patients with ovarian cancer. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Essel K, Behbakht K, Lai T, Hand L, Evans E, Dvorak J, Ding K, Konecny G, Moore K. PARPi after PARPi in epithelial ovarian cancer. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lai T, Chan HL, Zhou W, Chan KK, Tsui KL. P375The role of cardiac magnetic resonance imaging in the management of a young patient with end stage renal failure presented with cardiac arrest. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez109.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Lai
- Pamela Youde Nethersole Eastern Hospital, Hong Kong, Hong Kong
| | - H L Chan
- Pamela Youde Nethersole Eastern Hospital, Hong Kong, Hong Kong
| | - W Zhou
- The University of Hong Kong - Shenzhen Hospital, Hong Kong, Hong Kong
| | - K K Chan
- Pamela Youde Nethersole Eastern Hospital, Hong Kong, Hong Kong
| | - K L Tsui
- Pamela Youde Nethersole Eastern Hospital, Hong Kong, Hong Kong
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13
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Nicu C, Hardmann J, Lai T, Pople J, Bhogal R, Ansell D, Paus R. 922 Dermal white adipose tissue secretes hepatocyte growth factor to promote human hair follicle growth and pigmentation. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Li ZY, Zhu L, Xu T, Liu Q, Li ZA, Gong J, Wang YL, Wang JT, Lai T, Wu L, Lang JH. [An epidemiologic study of pelvic organ prolapse in urban Chinese women: a population-based sample in China]. Zhonghua Yi Xue Za Zhi 2019; 99:857-861. [PMID: 30893731 DOI: 10.3760/cma.j.issn.0376-2491.2019.11.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: This study aimed to assess the prevalence and factors associated with pelvic organ prolapse (POP) in a representative sample of Chinese urban women. Methods: A total of 29613 Chinese urban women were recruited to this cross-sectional study between February 2014 and March 2016. The prevalence of POP, defined as any stage Ⅱ or higher POP resulting in symptoms, was assessed using questionnaires and physical examinations. Multivariable logistic regression was used to assess factors associated with POP. Results: 2 864 of 29 613 women (9.67%) had POP. The prevalence of POP increased with age ranging from 1.23% (82/6 646) of women aged between 20 and 29 years to 26.11% (727/2 784) for those aged 70 years or older (P<0.000 1). Overweight and obese women were more likely to have POP than normal weight women [AOR=1.56, 95%CI 1.42-1.72 vs AOR=1.74, 95%CI 1.48-2.03]. In the multivariate analysis, the independent risk factors were cough (AOR=1.70, 95%CI 1.44-2.02), constipation (AOR=2.05, 95%CI 1.82-2.32), physical disease (AOR=1.27, 95%CI 1.15-1.41), and gynecological diseases (AOR=2.08, 95%CI 1.89-2.29). Nulliparous (AOR=0.12, 95%CI 0.06-0.22) and caesarean section (CS) (AOR=0.55, 95%CI 0.47-0.64) were protective factors for POP. Conclusions: POP affects nearly 10% of women in Chinese urban region. The prevalence of POP increases significantly with age. The independent risk factors for POP are body mass index, cough, constipation, physical disease and gynecological diseases. Nulliparous and CS are protective factors for POP.
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Affiliation(s)
- Z Y Li
- Department of Gynecology and Obstetrics, Peking Union Medical College Hospital, Peking Union Medical College, Beijing 100730, China
| | - L Zhu
- Department of Gynecology and Obstetrics, Peking Union Medical College Hospital, Peking Union Medical College, Beijing 100730, China
| | - T Xu
- Department of Epidemiology and Statistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing 100005, China
| | - Q Liu
- Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Gansu Province, Lanzhou 730050, China
| | - Z A Li
- Department of Gynecology and Obstetrics, Children's Hospital of Shanxi Province, Taiyuan 030013, China
| | - J Gong
- Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Wuxi, Wuxi 214002, China
| | - Y L Wang
- Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Foshan, Foshan 528000, China
| | - J T Wang
- Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Guiyang, Guiyang 550001, China
| | - T Lai
- Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Guiyang, Guiyang 550001, China
| | - L Wu
- Department of Gynecology and Obstetrics, Maternal and Child Health Hospital of Huaian, Huaian 223002, China
| | - J H Lang
- Department of Gynecology and Obstetrics, Peking Union Medical College Hospital, Peking Union Medical College, Beijing 100730, China
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Liu NY, Cay-Durgun P, Lai T, Sprowls M, Thomas L, Lind ML, Forzani E. A Handheld, Colorimetric Optoelectronic Dynamics Analyzer for Measuring Total Ammonia of Biological Samples. IEEE J Transl Eng Health Med 2018; 6:2800610. [PMID: 30112251 PMCID: PMC6092083 DOI: 10.1109/jtehm.2018.2840678] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/11/2018] [Accepted: 05/20/2018] [Indexed: 12/30/2022]
Abstract
This paper introduces a wireless, solid-state, portable, and automated device capable of measuring the total ammonia [ammonia (NH3) and ammonium (NH4+)] levels of fluids, including biological samples. This device reliably measures the total ammonia of biological samples (e.g., urine) faster than the current ammonia quantification techniques. Medical professionals typically estimate NH4+ levels using error-prone indirect measurement techniques (i.e., urine anion gap), which are time-consuming and are seldom suitable for periodic measurements. Several instantaneous measurements of total ammonia levels in a patient urine could be utilized as an early warning for both acid-base and/or potassium disturbances. Given the device’s operation mechanism, it is able to quantify the total ammonia concentration within a biological sample in only 5 s and can simultaneously transmit data to other devices via Bluetooth. The analytical operation demonstrated high sensitivity, high specificity, fast reversibility, rapid response time, and has enabled the accurate determination of total ammonia concentration in urine samples produced by subjects who had consumed diets of variable protein compositions.
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Affiliation(s)
- Nai-Yuan Liu
- School for Engineering of Matter, Transport, and EnergyArizona State UniversityTempeAZ85287USA.,Center for Bioelectronics and BiosensorsThe Biodesign Institute, Arizona State UniversityTempeAZ85287USA
| | - Pinar Cay-Durgun
- School for Engineering of Matter, Transport, and EnergyArizona State UniversityTempeAZ85287USA
| | - Tianmiao Lai
- School for Engineering of Matter, Transport, and EnergyArizona State UniversityTempeAZ85287USA.,Center for Bioelectronics and BiosensorsThe Biodesign Institute, Arizona State UniversityTempeAZ85287USA
| | - Mark Sprowls
- School for Engineering of Matter, Transport, and EnergyArizona State UniversityTempeAZ85287USA.,Center for Bioelectronics and BiosensorsThe Biodesign Institute, Arizona State UniversityTempeAZ85287USA
| | - Leslie Thomas
- School for Engineering of Matter, Transport, and EnergyArizona State UniversityTempeAZ85287USA.,Mayo Clinic in Arizona Division of NephrologyScottsdaleAZ85259USA
| | - Mary Laura Lind
- School for Engineering of Matter, Transport, and EnergyArizona State UniversityTempeAZ85287USA.,Center for Bioelectronics and BiosensorsThe Biodesign Institute, Arizona State UniversityTempeAZ85287USA.,Mayo Clinic in Arizona Division of NephrologyScottsdaleAZ85259USA
| | - Erica Forzani
- School for Engineering of Matter, Transport, and EnergyArizona State UniversityTempeAZ85287USA.,Center for Bioelectronics and BiosensorsThe Biodesign Institute, Arizona State UniversityTempeAZ85287USA.,Mayo Clinic in Arizona Division of NephrologyScottsdaleAZ85259USA
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17
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Huang Y, Cay-Durgun P, Lai T, Yu P, Lind ML. Phenol Removal from Water by Polyamide and AgCl Mineralized Thin-Film Composite Forward Osmosis Membranes. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00205] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yangbo Huang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Pinar Cay-Durgun
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, Arizona 85287, United States
| | - Tianmiao Lai
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Ping Yu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
| | - Mary Laura Lind
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, Arizona 85287, United States
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Boyle S, Harle R, Lai T, Jenkins C, Dahiya A. Palm Tree Heart: The Utility of Multimodality Imaging and The Importance of Clinical Monitoring in Isolated Left Ventricular Non–Compaction. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sanna D, Lai T, Cossu P, Scarpa F, Dedola GL, Cristo B, Francalacci P, Curini-Galletti M, Mura L, Fois N, Maltagliati F, Casu M. Cytochrome c oxidase subunit I variability in Ruditapes decussatus (Veneridae) from the western Mediterranean. The European Zoological Journal 2017. [DOI: 10.1080/24750263.2017.1395914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- D. Sanna
- Dipartimento di Scienze della Natura e del Territorio – Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari , Sassari (SS), Italy
| | - T. Lai
- Dipartimento di Scienze della Natura e del Territorio – Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari , Sassari (SS), Italy
| | - P. Cossu
- Dipartimento di Scienze della Natura e del Territorio – Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari , Sassari (SS), Italy
| | - F. Scarpa
- Dipartimento di Scienze della Natura e del Territorio – Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari , Sassari (SS), Italy
| | - G. L. Dedola
- Dipartimento di Scienze della Natura e del Territorio – Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari , Sassari (SS), Italy
| | - B. Cristo
- Dipartimento di Scienze della Natura e del Territorio – Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari , Sassari (SS), Italy
| | - P. Francalacci
- Dipartimento di Scienze della Natura e del Territorio – Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari , Sassari (SS), Italy
| | - M. Curini-Galletti
- Dipartimento di Scienze della Natura e del Territorio – Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari , Sassari (SS), Italy
| | - L. Mura
- Dipartimento per la Ricerca nelle Produzioni Animali, Agris Sardegna, Agenzia per la Ricerca in Agricoltura , Olmedo (SS), Italy
| | - N. Fois
- Dipartimento per la Ricerca nelle Produzioni Animali, Agris Sardegna, Agenzia per la Ricerca in Agricoltura , Olmedo (SS), Italy
| | - F. Maltagliati
- Dipartimento di Biologia, Università di Pisa , Pisa (PI), Italy
| | - M. Casu
- Dipartimento di Scienze della Natura e del Territorio – Sezione di Zoologia, Archeozoologia e Genetica, Università di Sassari , Sassari (SS), Italy
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Palmio J, Leonard S, Sacconi S, Savarese M, Semmler A, Bach J, Kress W, Mozaffar T, Lai T, Stojkovic T, Schoser B, Walter M, Reisin R, Berardo A, Attarian S, Urtizberea A, Fatehi F, Hackman P, Udd B. Expanding importance of HMERF titinopathy: new mutations and clinical aspects. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Li J, Guo Y, Li W, Lai T. The pregnancy outcomes of pcos patients at advanced age under in vitro fertilization in china. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yin H, Lau CY, Rozowski M, Howard C, Xu Y, Lai T, Dose ME, Lively RP, Lind ML. Free-standing ZIF-71/PDMS nanocomposite membranes for the recovery of ethanol and 1-butanol from water through pervaporation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.02.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jin H, Rivers F, Yin H, Lai T, Cay-Durgun P, Khosravi A, Lind ML, Yu P. Synthesis of AgCl Mineralized Thin Film Composite Polyamide Membranes To Enhance Performance and Antifouling Properties in Forward Osmosis. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04287] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haiyang Jin
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Frederick Rivers
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Huidan Yin
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Tianmiao Lai
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Pinar Cay-Durgun
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
- Nanosystems
Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, Arizona 85287, United States
| | - Afsaneh Khosravi
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Mary Laura Lind
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
- Nanosystems
Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, Arizona 85287, United States
| | - Ping Yu
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
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Yoh NT, Lai T, Wagener G. Incidence of rapid increase of plasma sodium during liver transplantation and ITS effect on outcome. Intensive Care Med Exp 2015. [PMCID: PMC4798490 DOI: 10.1186/2197-425x-3-s1-a695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Cossu R, Lai T. Automotive shredder residue (ASR) management: An overview. Waste Manag 2015; 45:143-151. [PMID: 26294011 DOI: 10.1016/j.wasman.2015.07.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 07/22/2015] [Accepted: 07/23/2015] [Indexed: 06/04/2023]
Abstract
On the basis of statistical data, approximately 6.5 million tons of ELVs were produced in Europe in 2011. ELVs are processed according to a treatment scheme comprising three main phases: depollution, dismantling and shredding. The ferrous fraction represents about 70-75% of the total shredded output, while nonferrous metals represent about 5%. The remaining 20-25% is referred to as automotive shredder residue (ASR). ASR is largely landfilled due to its heterogeneous and complex matrix. With a start date of January 1st 2015, the European Directive 2000/53/EC establishes the reuse and recovery of a minimum of 95% ELV total weight. To reach these targets various post-shredder technologies have been developed with the aim of improving recovery of materials and energy from ASR. In order to evaluate the environmental impacts of different management options of ELVs, the life cycle assessment (LCA) methodology has been applied taking into account the potential implication of sustainable design of vehicles and treatment of residues after shredding of ELVs. Findings obtained reveal that a combination of recycling and energy recovery is required to achieve European targets, with landfilling being viewed as the least preferred option. The aim of this work is to provide a general overview of the recent development of management of ELVs and treatment of ASR with a view to minimizing the amount of residues disposed of in landfill.
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Affiliation(s)
- R Cossu
- DII Department of Industrial Engineering, University of Padua, via Venezia 1, 35131 Padova, Italy
| | - T Lai
- DII Department of Industrial Engineering, University of Padua, via Venezia 1, 35131 Padova, Italy.
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Sanna D, Scarpa F, Lai T, Cossu P, Falautano M, Castriota L, Andaloro F, Follesa MC, Francalacci P, Curini-Galletti M, Casu M. Fistularia commersonii(Teleostea: Fistulariidae): walking through the Lessepsian paradox of mitochondrial DNA. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/11250003.2015.1046958] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Grech K, Lai T. The challenges of developing and implementing a Health System Performance Assessment Framework in small states – the experience of Malta and Estonia. Eur J Public Health 2014. [DOI: 10.1093/eurpub/cku163.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Cossu R, Fiore S, Lai T, Luciano A, Mancini G, Ruffino B, Viotti P, Zanetti MC. Review of Italian experience on automotive shredder residue characterization and management. Waste Manag 2014; 34:1752-1762. [PMID: 24373677 DOI: 10.1016/j.wasman.2013.11.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 10/14/2013] [Accepted: 11/21/2013] [Indexed: 06/03/2023]
Abstract
Automotive Shredder Residue (ASR) is a special waste that can be classified as either hazardous or non hazardous depending on the amount of hazardous substances and on the features of leachate gathered from EN12457/2 test. However both the strict regulation concerning landfills and the EU targets related to End-of-Life Vehicles (ELVs) recovery and recycling rate to achieve by 2015 (Directive 2000/53/EC), will limit current landfilling practice and will impose an increased efficiency of ELVs valorization. The present paper considers ELVs context in Italy, taking into account ASRs physical-chemical features and current processing practice, focusing on the enhancement of secondary materials recovery. The application in waste-to-energy plants, cement kilns or metallurgical processes is also analyzed, with a particular attention to the possible connected environmental impacts. Pyrolysis and gasification are considered as emerging technologies although the only use of ASR is debatable; its mixing with other waste streams is gradually being applied in commercial processes. The environmental impacts of the processes are acceptable, but more supporting data are needed and the advantage over (co-)incineration remains to be proven.
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Affiliation(s)
- R Cossu
- Dept. of Civil, Building and Environmental Engineering (DICEA), University of Padova, Lungargine Rovetta 8, 35127 Padova, Italy
| | - S Fiore
- Dept of Land, Environment and Infrastructure Engineering (DIATI), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
| | - T Lai
- Dept. of Civil, Building and Environmental Engineering (DICEA), University of Padova, Lungargine Rovetta 8, 35127 Padova, Italy
| | - A Luciano
- ENEA Italian National Agency for New Technologies, Energy and Sustainable Economic Development, RC Casaccia, Via Anguillarese 301, 00123 Rome, Italy
| | - G Mancini
- Dept. of Industrial Engineering (DII), University of Catania, Viale Andrea Doria 6, I-95125 Catania, Italy
| | - B Ruffino
- Dept of Land, Environment and Infrastructure Engineering (DIATI), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - P Viotti
- Dept. of Civil, Building and Environmental Engineering (DICEA), Sapienza University of Rome, Via Eudossiana 18, I-00184 Rome, Italy
| | - M C Zanetti
- Dept of Land, Environment and Infrastructure Engineering (DIATI), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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Wang Y, Liu YP, Lai T, Liang HL, Li ZL, Mei ZX, Zhang FM, Kuznetsov A, Du XL. Selective nano-emitter fabricated by silver assisted chemical etch-back for multicrystalline solar cells. RSC Adv 2013. [DOI: 10.1039/c3ra43100b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Mura L, Cossu P, Cannas A, Scarpa F, Sanna D, Dedola G, Floris R, Lai T, Cristo B, Curini-Galletti M, Fois N, Casu M. Genetic variability in the Sardinian population of the manila clam, Ruditapes philippinarum. BIOCHEM SYST ECOL 2012. [DOI: 10.1016/j.bse.2011.11.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Sanna D, Dedola GL, Lai T, Curini-Galletti M, Casu M. PCR-RFLP: A practical method for the identification of specimens ofPatella ulyssiponensis s.l.(Gastropoda: Patellidae). ACTA ACUST UNITED AC 2012. [DOI: 10.1080/11250003.2011.620988] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Baburin A, Lai T, Leinsalu M. Avoidable mortality in Estonia: exploring the differences in life expectancy between Estonians and non-Estonians in 2005-2007. Public Health 2011; 125:754-62. [PMID: 22015210 DOI: 10.1016/j.puhe.2011.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 06/14/2011] [Accepted: 09/09/2011] [Indexed: 01/16/2023]
Abstract
OBJECTIVES A considerable increase in social inequalities in mortality was observed in Eastern Europe during the post-communist transition. This study evaluated the contribution of avoidable causes of death to the difference in life expectancy between Estonians and non-Estonians in Estonia. STUDY DESIGN Descriptive study. METHODS Temporary life expectancy (TLE) was calculated for Estonian and non-Estonian men and women aged 0-74 years in 2005-2007. The ethnic TLE gap was decomposed by age and cause of death (classified as preventable or treatable). RESULTS The TLE of non-Estonian men was 3.53 years less than that of Estonian men, and the TLE of non-Estonian women was 1.36 years less than that of Estonian women. Preventable causes of death contributed 2.19 years to the gap for men and 0.78 years to the gap for women, while treatable causes contributed 0.67 and 0.33 years, respectively. Cardiorespiratory conditions were the major treatable causes of death, with ischaemic heart disease alone contributing 0.29 and 0.08 years to the gap for men and women, respectively. Conditions related to alcohol and substance use represented the largest proportion of preventable causes of death. CONCLUSIONS Inequalities in health behaviours underlie the ethnic TLE gap in Estonia, rather than inequalities in access to health care or the quality of health care. Public health interventions should prioritize primary prevention aimed at alcohol and substance use, and should be implemented in conjunction with wider social policy measures.
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Affiliation(s)
- A Baburin
- Department of Epidemiology and Biostatistics, National Institute for Health Development, Tallinn, Estonia.
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Lai T, Yadav R, Schrale R. Mimicking myocardial infarction: localized ST-segment elevation inCampylobacter jejunimyopericarditis. Intern Med J 2009; 39:422-3. [DOI: 10.1111/j.1445-5994.2009.01930.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ma JL, Wang JF, Wang K, Wu CX, Lai T, Zhu YH. Short Communication: Changes in Micromineral, Magnesium, Cytokine, and Cortisol Concentrations in Blood of Dairy Goats Following Intramammary Inoculation with Staphylococcus aureus. J Dairy Sci 2007; 90:4679-83. [PMID: 17881689 DOI: 10.3168/jds.2006-868] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The aim of this study was to investigate mineral metabolism and immune response in dairy goats following intramammary inoculation with varying doses of Staphylococcus aureus. Blood samples were collected at 0, 2, 4, 8, 12, 24, 48, and 72 h after intramammary inoculation. Lowered plasma Fe concentrations were observed from 12 to 24 h postinoculation in groups SAA (Staph. aureus at 10(4) cfu, n = 5) and SAB (Staph. aureus at 10(8) cfu, n = 5). Plasma Cu concentrations increased in group SAB 2 h after inoculation and maintained greater concentrations until the end of the experiment compared with the control group (phosphate-buffered saline, n = 5). Increased plasma Zn concentrations in group SAB were observed 48 h after inoculation, and the concentration was still greater 72 h after inoculation compared with the control group. Greater plasma Mg concentrations were detected in groups SAA and SAB compared with the control group at all timepoints after inoculation. Plasma Mg concentrations were generally greater in group SAA than in group SAB through 72 h (except at 2 h). Plasma tumor necrosis factor-alpha concentrations were unchanged following intramammary inoculation with Staph. aureus throughout the study. Plasma IL-6 concentrations in groups SAA and SAB increased gradually compared with the control group and peaked at 48 h after inoculation. In group SAB, serum cortisol concentrations started to increase from 8 h postinoculation and peaked at 12 h postinoculation. In conclusion, increasing the inoculum dose does not induce more rapid proinflammatory cytokine responses, whereas the data indicate that mineral metabolic alterations occur during the course of Staph. aureus mastitis in the goat.
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Affiliation(s)
- J L Ma
- College of Veterinary Medicine, China Agricultural University, Beijing, China
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Wong CKM, Lai T, White S, Sheffield E, Wheeler MH, Stewart CEH, Farndon JR. Characterization of the insulin-like growth factor axis and Wilms' tumour suppressor gene in hyperparathyroidism. Br J Surg 2007; 94:1232-41. [PMID: 17665418 DOI: 10.1002/bjs.5566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Background
Genetic mutations and upregulation of growth factors are implicated in the pathogenesis of hyperparathyroidism. The aim of this study was to evaluate the role of Wilms' tumour suppressor gene (WT-1) and the insulin-like growth factor (IGF) axis in hyperparathyroidism.
Methods
The expression of WT-1 and IGF components was examined by immunohistochemistry, reverse transcriptase–polymerase chain reaction and western immunoblotting in a panel of parathyroid specimens from both primary and secondary hyperparathyroidism. A human parathyroid cell culture model was established to examine the parathyroid response to IGF stimulation.
Results
There was a significantly lower level of WT-1 expression in parathyroid tumours than in normal parathyroid glands. Most tumours expressed IGF-I and IGF-II receptors and responded to IGF stimulation. Only IGF-I was present in normal parathyroid glands, whereas IGF-II was expressed exclusively in parathyroid tumours.
Conclusion
Abnormal expression of WT-1 and the IGF axis may play a role in the pathogenesis of hyperparathyroidism.
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Affiliation(s)
- C K M Wong
- Department of Endocrine Surgery, Frenchay Hospital, Bristol, UK.
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Lai T, Juneja M, Bett N, Walters D. Trends in Percutaneous Coronary Intervention in Octogenarians over a 10 Year Period. Heart Lung Circ 2007. [DOI: 10.1016/j.hlc.2007.06.398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Freshwater IJ, Morsi YS, Lai T. The effect of angle on wall shear stresses in a LIMA to LAD anastomosis: numerical modelling of pulsatile flow. Proc Inst Mech Eng H 2006; 220:743-57. [PMID: 17117764 DOI: 10.1243/09544119jeim126] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The purpose of this study was to examine the effect of anastomotic angle on the flow patterns and wall shear distributions at the distal anastomosis of a left interior mammary artery (LIMA) graft to the left anterior descending artery (LDA). It is now well recognized that abnormal wall shear stress distributions along the anastomotic bed, around the toe, and around the heel can contribute to the focal development of intimal hyperplasia. However, the exact nature of the interaction between the dominant pulsing flow and the anastomotic angle on wall shear stresses has not been fully investigated numerically. In this study a commercial CFD package was used for three-dimensional flow analysis where the pulsatile waveforms and flowrates used as the boundary conditions are representative of an anastomosed left internal mammary artery and a stenosed left anterior descending coronary artery (intermediate, <70 per cent diameter narrowing). The flow patterns and distributions of time-averaged wall shear stress (TAWSS) and the oscillatory shear index (OSI) for three anastomotic angles of 20, 40, and 60 degrees were evaluated and compared with other published data. The findings indicated that transient, highly disturbed flow patterns occurred in localized regions of the proximal and distal native segments and in the anastomotic domain including recirculation zones, moving points of stagnation, and oscillating wall shear stresses mainly on the bed, at the toe, and at the heel. Moreover, higher anastomotic angles resulted in more extreme variations in TAWSS and OSI values, particularly around the toe and along the bed. In addition, the effect of anastomotic angle on OSI values at the heel followed the same pattern whereas the TAWSS values along the graft at the heel showed a significant increase at the lowest anastomotic angle of 20 degrees.
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Affiliation(s)
- I J Freshwater
- Faculty of Engineering, Swinburne University of Technology, Melbourne, Victoria, Australia.
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Ariens R, Mackenzie S, Standeven K, Lai T, Greenberg C, Grant P. ID: 175 SITE-DIRECTED MUTAGENESIS OF RESIDUES SURROUNDING THE THROMBIN CLEAVAGE SITE IN FACTOR XIII-A SUBUNIT DEMONSTRATES RELEVANT SITES FOR INTERACTION. J Thromb Haemost 2006. [DOI: 10.1111/j.1538-7836.2006.00175.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Maltagliati F, Lai T, Casu M, Valdesalici S, Castelli A. Identification of endangered Mediterranean cyprinodontiform fish by means of DNA inter-simple sequence repeats (ISSRs). BIOCHEM SYST ECOL 2006. [DOI: 10.1016/j.bse.2006.02.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wong CKM, Lai T, Holly JMP, Wheeler MH, Stewart CEH, Farndon JR. Insulin-like growth factors (IGF) I and II utilize different calcium signaling pathways in a primary human parathyroid cell culture model. World J Surg 2006; 30:333-45. [PMID: 16485066 DOI: 10.1007/s00268-005-0339-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND In most cell types, influx of calcium (Ca2+) induces a growth or secretory response. The opposite occurs in parathyroid (PTH), cells where there is an inverse relationship between intracellular Ca2+ concentration and PTH secretion. We have examined the effects of calcium channel and metabolism modulators on insulin-like growth factors (IGFs) in a parathyroid cell culture model. METHODS Cell cultures were prepared from 9 patients undergoing operation for hyperparathyroidism. Following adhesion, the cells were transferred to serum-free medium and dosed with IGF I, II +/- ethyleneglycol-bis(beta-aminoethyl)-N,N,N',N'-tetraacetic acid (EGTA), nifedipine, nickel, 2-aminoethoxy-diphenylborate (2-APB), or dantrolene. Proliferation (96 hours) was assessed by measuring tritiated thymidine incorporation and PTH release (1 and 3 hours) assayed by IRMA. RESULTS Both IGF I and II increased DNA synthesis to 162.8% +/- 10.6% (SEM) and 131.1% +/- 7.7%, respectively (P < 0.05). EGTA at 0.2 mmol (ionized Ca2+ 0.2 mmol) did not affect the response to both IGFs. EGTA at 2 mmol (ionized Ca2+ 0 mmol) reduced the DNA synthesis of IGF I and II to 29% and 26%, respectively (P < 0.05). Nifedipine and nickel (nonspecific Ca2+ channel blocker) were equally potent in negating the mitogenic effects of both IGFs. 2-APB (IP3R blocker) reduced the basal DNA synthesis to 51.3% +/- 8.4% but had no effect on either IGF. Dantrolene (ryanodine receptor blocker) negated IGF II induced mitogenisis (74.2% +/- 6.7%) and partially inhibited IGF I mitogenesis (123% +/- 6%) (P < 0.05). The rate of PTH secretion was greater after IGF II stimulation than after IGF I stimulation. CONCLUSIONS IGFs I and II induce mitogenesis by different calcium signaling pathways. These data suggest that parathyroid cells may utilize different calcium signaling pathways to distinguish growth factors and serum calcium changes.
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Affiliation(s)
- C K M Wong
- Department of Endocrine Surgery, Frenchay Hospital, Frenchay Park, Bristol, BS16 1LE, United Kingdom.
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Mata I, Arranz MJ, Patiño A, Lai T, Beperet M, Sierrasesumaga L, Clark D, Perez-Nievas F, Richards L, Ortuño F, Sham P, Kerwin RW. Serotonergic polymorphisms and psychotic disorders in populations from North Spain. Am J Med Genet B Neuropsychiatr Genet 2004; 126B:88-94. [PMID: 15048655 DOI: 10.1002/ajmg.b.20150] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
There is strong biological evidence relating alterations in the serotonergic system with mental disorders. These alterations may be originated at the DNA level by sequence mutations that alter the functioning of serotonin receptors and transporter. To test this hypothesis we investigated three genetic variants of the 5-HT2A receptor (-1438G/A, 102T/C and His452Tyr) and two variants of the serotonin transporter (a VNTR in the second intron and a 44 bp insertion/delition in the promoter region of the gene) in a clinical sample recruited in a human isolate and in surrounding areas in Northern Spain (N = 257) and in ethnically matched controls (N = 334). No clear association was found between 5-HT2A variants and psychosis. However, marginal associations were observed between the 5-HTT LPR and VNTR variants and psychosis (P < or = 0.05) indicating a minor contribution to psychosis of genetic alterations in this gene.
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Affiliation(s)
- I Mata
- Fundacion Argibide, Pamplona, Navarre, Spain
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Abstract
AIMS To review factors affecting graft survival and determinants of visual acuity after penetrating keratoplasty in children. METHODS All cases of penetrating keratoplasty performed in an ophthalmic unit, in children aged less than 15 years at the time of operation, for the period 1984 to 2002 were included. RESULTS 19 penetrating keratoplasties were done in 18 eyes of 16 children, age range 2 weeks to 14 years 8 months (mean 9.24 years), with mean follow up 6.6 years. 73.7% of grafts have remained clear for up to 14 years. Postoperative visual acuity among congenital indications for graft was better than 6/60 in only 14.2% of cases, but was better than or equal to 6/12 in all cases of keratoconus. CONCLUSION This series shows that prolonged corneal graft survival can be achieved in children, but successful restoration of visual acuity depends upon a period of normal visual development before the onset of corneal opacification.
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Affiliation(s)
- K McClellan
- Department of Clinical Ophthalmology and Save Sight Institute, University of Sydney, GPO Box 4337, Sydney NSW 2001, Australia.
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Hollowood AD, Stewart CEH, Perks CM, Pell JM, Lai T, Alderson D, Holly JMP. Evidence implicating a mid-region sequence of IGFBP-3 in its specific IGF-independent actions. J Cell Biochem 2003; 86:583-9. [PMID: 12210764 DOI: 10.1002/jcb.10223] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Insulin-like growth factor binding protein-3 (IGFBP-3) is one of six high affinity-binding proteins that share a common function in regulating the bioavailability of the insulin-like growth factors. The six binding proteins have highly conserved C- and N-terminals that are essential to this function. Additionally, they all have specific functions on cellular homeostasis independent to the regulation of the insulin-like growth factors. It has previously been shown that insulin-like growth factor binding protein-3 can accentuate UV-induced apoptosis in a human carcinoma cell line. Using the KYSE 190 oesophageal carcinoma cell line we have demonstrated that a 15 amino acid (aa) peptide that lies within the mid-region of the protein can mimic the effect of the intact protein. This region contains the serine residues Ser(111) and Ser(113). Using two protocols, we modified these serine residues and have shown that both phosphorylation and derivatization of IGFBP-3 can negate the accentuation of UV-induced cell death. These three independent pieces of evidence support the hypothesis that the variable mid-region is responsible for the specific pro-apoptotic functions of IGFBP-3, and suggest that phosphorylation may provide a mechanism for regulation of this action.
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Affiliation(s)
- A D Hollowood
- University Department of Surgery, Bristol Royal Infirmary, Bristol, BS2 8HW, United Kingdom
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McCaig C, Fowler CA, Laurence NJ, Lai T, Savage PB, Holly JMP, Perks CM. Differential interactions between IGFBP-3 and transforming growth factor-beta (TGF-beta) in normal vs cancerous breast epithelial cells. Br J Cancer 2002; 86:1963-9. [PMID: 12085194 PMCID: PMC2375445 DOI: 10.1038/sj.bjc.6600355] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2001] [Revised: 04/08/2002] [Accepted: 04/09/2002] [Indexed: 11/11/2022] Open
Abstract
In addition to modulating insulin-like growth factors action, it is now clear that insulin-like growth factor-binding protein-3 also has intrinsic effects on cell growth and survival. We have compared the effects of insulin-like growth factor-binding protein-3 and transforming growth factor-beta on cell proliferation and death of Hs578T cells and the normal breast epithelial cell line, MCF-10A. The growth of MCF-10A cells was inhibited at low concentrations of insulin-like growth factor-binding protein-3 but stimulated at high concentrations. These differential effects were unaffected in the presence of an insulin-like growth factor-I receptor antagonist. A synthetic peptide corresponding to the serine phosphorylation domain of insulin-like growth factor-binding protein-3 (that does not bind to insulin-like growth factors) also mimicked these differential actions. The growth of both cell lines was significantly inhibited by transforming growth factor-beta, this was associated with a 14-fold increase of insulin-like growth factor-binding protein-3 secreted by the Hs578T cells but a five-fold decrease of insulin-like growth factor-binding protein-3 secreted by MCF-10A cells. Replacement doses of exogenous insulin-like growth factor-binding protein-3 overcame the transforming growth factor-beta-induced growth inhibition in the MCF-10A cells. Cell death induced by ceramide was significantly reduced by insulin-like growth factor-binding protein-3 in the MCF-10A cells and depleting insulin-like growth factor-binding protein-3 with transforming growth factor-beta in these cells consequently increased their susceptibility to ceramide. In contrast, insulin-like growth factor-binding protein-3 enhanced apoptosis induced by ceramide in the Hs578T cells but transforming growth factor-beta treated Hs578T cells were resistant to apoptosis. The addition of anti-sense mRNA to insulin-like growth factor-binding protein-3 significantly abrogated this effect of transforming growth factor-beta. These data indicate that insulin-like growth factor-binding protein-3 has intrinsic activity capable of inhibiting or enhancing the growth and survival of breast epithelial cells depending on the cell line and exposure to other cytokines.
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Affiliation(s)
- C McCaig
- Division of Surgery, Department of Hospital Medicine, Bristol Royal Infirmary, Bristol BS2 8HW, UK
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Wong C, Lai T, Stewart C, Farndon J, Holly J. Patey Prize 05. Br J Surg 2002. [DOI: 10.1046/j.1365-2168.89.s.1.23_5.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Pre-ablation dual-pulse LIBS enhancement data for copper, brass and steel using ns laser excitation are reported. Although large enhancements are observed for all samples, the magnitude of the enhancement is matrix dependent. Whereas all of the dual-pulse studies used ns laser excitation we see interesting effects when using ps and fs laser excitation for single-pulse LIBS. LIBS spectra of copper using 1.3 ps and 140 fs laser pulses show much lower background signals compared to ns pulse excitation. Also, the atomic emission decays much more rapidly with time. Because of relatively low backgrounds when using ps and fs pulses, non-gated detection of LIBS is shown to be very effective. The plasma dissipates quickly enough using ps and fs laser pulses, that high pulse rates, up to 1,000 Hz, are effective for increasing the LIBS signal, for a given measurement time. Finally, a simple near-collinear dual-pulse fiber-optic LIBS probe is shown to be useful for enhanced LIBS measurements.
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Affiliation(s)
- S M Angel
- Department of Chemistry and Biochemistry, The University of South Carolina, Columbia 29208, USA
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Mihai R, Lai T, Schofield GJ, Farndon JR. Changes in cytoplasmic calcium determine the secretory response to extracellular cations in human parathyroid cells: a confocal microscopy study using FM1-43 dye. Biochem J 2000; 352 Pt 2:353-61. [PMID: 11085928 PMCID: PMC1221466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Whether activation of the calcium receptor (CaR) modulates secretory events was investigated by real-time fluorescence and confocal microscopy using fura 2 and FM1-43 fluorescent dye. Two paradigms were used: human parathyroid cells, which are stimulated by a step from a high to a low extracellular calcium concentration ([Ca(2+)](ext)), and rMTC6-23 cells, a rat medullary thyroid carcinoma cell line whose secretion is stimulated by an increase in [Ca(2+)](ext). Parathyroid cells were dispersed from parathyroid adenomas removed from 18 patients with primary hyperparathyroidism. In both cell types, incubation with FM1-43 (2 microM) resulted in staining of the plasma membranes, which was rapidly increased following changes in [Ca(2+)](ext) known to stimulate secretion. A high [Ca(2+)](ext) and lanthanum (La(3+)) decreased the membrane-associated FM1-43 fluorescence. Prolonged incubation (5-30 min) in the presence of FM1-43 resulted in accumulation of the dye in the cytoplasm, its granular distribution suggesting targeting of the secretory compartment. These data suggest that FM1-43 fluorescence is determined by: (i) changes in cell membrane surface area associated with secretion-associated events, (ii) displacement/quenching by extracellular cations and (iii) endocytosis of the dye. In parathyroid cells, a rise in FM1-43 fluorescence occurred during incubation in a high (inhibitory) [Ca(2+)](ext) if the cytoplasmic calcium concentration ([Ca(2+)](i)) was decreased by the calcium chelator BAPTA/AM [bis-(o-aminophenoxy)ethane-N,N,N',N'-tetra-acetic acid tetrakis(acetoxymethyl ester)] (10-50 microM). Alternatively, the expected rise in FM1-43 fluorescence did not occur during incubation in a low (stimulatory) [Ca(2+)](ext) if [Ca(2+)](i) was increased by addition of the calcium ionophore A23187 (10-25 microM). These data suggest that [Ca(2+)](i), rather than the absolute value of [Ca(2+)](ext), is the main modulator of secretion from parathyroid cells.
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Affiliation(s)
- R Mihai
- University Department of Surgery, Bristol Royal Infirmary, Bristol BS2 8HW, U.K.
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