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Potential Endocrine Disrupting Effects of Phthalates in In Vitro and In Vivo Models
Nguyen, Tien-Thanh,Jung, Eui-Man,Yang, Hyun,Hyun, Sang-Hwan,Choi, Kyung-Chul,Jeung, Eui-Bae 韓國受精卵移植學會 2010 한국동물생명공학회지 Vol.25 No.4
Thousands of new chemicals have been introduced to environment during last decades. Many of them and common consumer products have been shown to be the endocrine disrupting chemicals. One such chemical group is the phthalates, used in soft poly vinyl chloride (PVC) material and in a huge number of consumer products. The prevalence of these modem chemicals have a remarkable increase. Approximately 3.5 million tons of the main phthalate, di-(2-ethylhexyl) phthalate (DEHP), are produced annually worldwide and indeed, DEHP is considered a ubiquitous environmental contaminant. It has been demonstrated that high doses of phthalate can adversely affect adult and developing animals. In this review, we critically discuss the conclusions of recently original research papers and provide an overview of studies on reproductive disrupting effects of phthalates. In addition, we review the reproductive toxicity data of phthalates in some in vitro research and in both male and female reproductive systems in experimental and domestic animals. Finally, we point out some critical issues that should be addressed in order to clarify the implication of phthalates for human reproduction.
Tien, Nguyen Thanh,Seol, Young Gug,Dao, Le Huynh Anh,Noh, Hwa Young,Lee, Nae-Eung WILEY-VCH Verlag 2009 Advanced Materials Vol.21 No.8
<B>Graphic Abstract</B> <P>Highly crystalline P(VDF-TrFE) materials have a large remnant polarization that causes the I<SUB>D</SUB>–V<SUB>D</SUB> curves to have no current saturation in the region where they normally would. This high crystallinity also results in a positive pyroelectricity, which is different from the conventional low response and nonlinear negative pyroelectricity. <img src='wiley_img/09359648-2009-21-8-ADMA200801831-content.gif' alt='wiley_img/09359648-2009-21-8-ADMA200801831-content'> </P>
Potential Endocrine Disrupting Effects of Phthalates in In Vitro and In Vivo Models
Tien-Thanh Nguyen,정의만,양현,현상환,최경철,정의배 사단법인 한국동물생명공학회 2010 한국동물생명공학회지 Vol.25 No.4
Thousands of new chemicals have been introduced to environment during last decades. Many of them and common consumer products have been shown to be the endocrine disrupting chemicals. One such chemical group is the phthalates, used in soft poly vinyl chloride (PVC) material and in a huge number of consumer products. The prevalence of these modern chemicals have a remarkable increase. Approximately 3.5 million tons of the main phthalate, di-(2-ethylhexyl) phthalate (DEHP), are produced annually worldwide and indeed, DEHP is considered a ubiquitous environmental contaminant. It has been demonstrated that high doses of phthalate can adversely affect adult and developing animals. In this review, we critically discuss the conclusions of recently original research papers and provide an overview of studies on reproductive disrupting effects of phthalates. In addition, we review the reproductive toxicity data of phthalates in some in vitro research and in both male and female reproductive systems in experimental and domestic animals. Finally, we point out some critical issues that should be addressed in order to clarify the implication of phthalates for human reproduction.
Exploring Critical Risk Factors of Office Building Projects
NGUYEN, Phong Thanh,PHAM, Cuong Phu,PHAN, Phuong Thanh,VU, Ngoc Bich,DUONG, My Tien Ha,NGUYEN, Quyen Le Hoang Thuy To Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.2
Risks and uncertainty are unavoidable problems in management of projects. Therefore, project managers should not only prevent risks, but also have to respond and manage them. Risk management has become a critical interest subject in the construction industry for both practitioners and researchers. This paper presents critical risk factors of office building projects in the construction phase in Ho Chi Minh City, Vietnam. Data was collected through a questionnaire survey based on the likelihood and consequence level of risk factors. These factors fell into five groups: (i) financial risk factors; (ii) management risk factors; (iii) schedule risk factors; (iv) construction risk factors; and (v) environment risk factors. The research results showed that critical factors affecting office building projects are natural (i.e., prolonged rain, storms, climate effects) and human-made issues (i.e., soil instability, safety behaviors, owner's design change) and the schedule-related risk factors contributed to the most significant risks for office buildings projects in the construction phase in Ho Chi Minh City. They give construction management and project management practitioners a new perspective on risks and risk management of office buildings projects in Ho Chi Minh City and are proactive in the awareness, response, and management of risk factors comprehensively.
Nguyen Thanh Tien,Pham Thi Bich Thao,Le Tuan 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.11
We propose a modification of the interface roughness (IFR) scattering form factor in intersubbandtransitions. We properly derived a formula for the form factor for IFR scattering in terms of theintegrals of the envelope wave functions. This new form factor has a more global natural than theold one (proposed by Ando) and may be suitable for a wide range of applications. In this paper,we calculate and compare the absorption linewidths by applying of the old form factor and thenew one. Different from previous calculations, for the same surface profile (, ), the interfaceroughness scattering absorption linewidth calculated with the new form factor is twice as great asthat calculated with the old one. Our numerical calculations may better explain the experimentalresults for the well-width dependence of the intersubband absorption linewidth.
Nguyen Huu Tung,Chau Van Minh,Phan Van Kiem,Hoang Thanh Huong,Tran Thu Ha,Nguyen Tien Dat,Nguyen Xuan Nhiem,Nguyen Xuan Cuong,Jae-Hee Hyun,Hee-Kyoung Kang,김영호 대한약학회 2009 Archives of Pharmacal Research Vol.32 No.12
One new C29 sterol with a cyclopropane ring at C-25 and C-26, aragusteroketal B (1), and aragusterol B (2) were isolated from the Vietnamese marine sponge Ianthella sp. Their structures were elucidated by extensive spectroscopic analyses. Both 1 and 2 showed moderate cytotoxic activity against MCF-7, SK-Hep-1, and HeLa cell lines with IC50 in the range of 12.8-27.8 μM.
Nguyen, Tiep Tien,Pham, Tung Thanh,Nguyen, Hanh Thuy,Nepal, Mahesh Raj,Phung, Cao Dai,You, Zhiwei,Katila, Nikita,Pun, Nirmala Tillija,Jeong, Tae Cheon,Choi, Dong-Young,Park, Pil-Hoon,Yong, Chul Soon,K Elsevier 2019 Biomaterials Vol.221 No.-
<P><B>Abstract</B></P> <P>Host immune response remains an obstacle in cell-replacement therapy for treating type I diabetes. Long-term systemic immunosuppression results in suboptimal efficacy and adverse reactions. Thus, “cell-particle hybrids” of pancreatic islets and tissue-adhesive, polydopamine-coated, FK506-loaded biodegradable microspheres (PD-FK506-MS) were developed to locally modulate the immune response at the transplantation site. Coating of FK506-MS with PD enabled the rapid formation of stable cell-particle hybrids without significant changes in islet viability and functionality. Extremely low quantities of FK506 (approximately 600 ng per recipient) sustainably released from cell-particle hybrids effectively prolonged survival of xenogeneic islet graft. Interestingly, FK506 exhibited extended bioavailability in the grafts but was undetectable in systemic circulation and other tissues. Moreover, mRNA expression of inflammatory cytokines was significantly inhibited in the PD-FK506-MS-containing grafts but not in lymphoid organs. This study presents a promising platform that facilitates the translation of local immunomodulation towards an effective strategy with improved safety profiles for treating type I diabetes.</P>