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Baez-Navarro X, van den Ende NS, Nguyen AH, Sinke R, Westenend P, van Brakel JB, Stobbe C, Westerga J, van Deurzen CHM. HER2-low and tumor infiltrating lymphocytes in triple-negative breast cancer: Are they connected? Breast Cancer Res 2024; 26:41. [PMID: 38468323 PMCID: PMC10926638 DOI: 10.1186/s13058-024-01783-z] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 02/11/2024] [Indexed: 03/13/2024] Open
Abstract
Most patients with triple-negative breast cancer (TNBC) are not candidates for targeted therapy, leaving chemotherapy as the primary treatment option. Recently, immunotherapy has demonstrated promising results in TNBC, due to its immunogenicity. In addition, a novel antibody-drug conjugate, namely, trastuzumab-deruxtecan, has shown effectiveness in TNBC patients with low-HER2 expression (HER2-low). These novel treatment options raise the question about the potential association between the density of stromal tumor-infiltrating lymphocytes (sTILs) and the level of HER2 expression. We aimed to evaluate the association between the level of HER2 expression (HER2-low versus HER2-0) and density of sTILs in TNBC patients, and how they impact the response to neoadjuvant chemotherapy (NAC). This was a retrospective multicenter study including all TNBC patients diagnosed between 2018 and 2022. Central pathology review included sTILs percentages and level of HER2 expression. Tumors were reclassified as either HER2-0 (HER2 IHC 0) or HER2-low (IHC 1 + or 2 + with negative reflex test). Various clinicopathologic characteristics, including sTILs density, and response to NAC were compared between HER2-0 and HER2-low cases. In total, 753 TNBC patients were included in this study, of which 292 patients received NAC. Interobserver agreement between the original pathology report and central review was moderate (77% had the same IHC status after reclassification in either HER2-0 or HER2-low; k = 0.45). HER2-low TNBC represented about one third (36%) of the tumors. No significant difference in sTILs density or complete pathologic response rate was found between HER2-0 and HER2-low cases (p = 0.476 and p = 0.339, respectively). The density of sTILs (≥ 10% sTILs vs. < 10%) was independently associated with achieving a pCR (p = 0.011). In conclusion, no significant association was found between HER2-low status and density of sTILs nor response to NAC. Nonetheless, sTILs could be an independent biomarker for predicting NAC response in TNBC patients.
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Affiliation(s)
- Ximena Baez-Navarro
- Department of Pathology, Erasmus University Medical Center, 3015 GD, Rotterdam, The Netherlands.
| | - Nadine S van den Ende
- Department of Pathology, Erasmus University Medical Center, 3015 GD, Rotterdam, The Netherlands
| | - Anh H Nguyen
- Department of Pathology, Erasmus University Medical Center, 3015 GD, Rotterdam, The Netherlands
- Department of Pathology, HMC, The Hague, The Netherlands
| | - Renata Sinke
- Department of Pathology, Pathan B.V., Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
| | - Pieter Westenend
- Laboratory of Pathology, PAL Dordrecht, Dordrecht, The Netherlands
| | | | - Claudia Stobbe
- Department of Pathology, Pathan B.V., Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
| | - Johan Westerga
- Department of Pathology, Pathan B.V., Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
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Nguyen AH, Oh S. Side effects of the addition of an adsorbent for the nitrification performance of a microbiome in the treatment of an antibiotic mixture. J Hazard Mater 2024; 465:133034. [PMID: 38035522 DOI: 10.1016/j.jhazmat.2023.133034] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/07/2023] [Accepted: 11/16/2023] [Indexed: 12/02/2023]
Abstract
This work determined the effect of biochar (BC) as an adsorbent on the nitrifying microbiome in regulating the removal, transformation, fate, toxicity, and potential environmental consequences of an antibiotic mixture containing oxytetracycline (OTC) and sulfamethoxazole (SMX). Despite the beneficial role of BC as reported in the literature, the present study revealed side effects for the nitrifying microbiome and its functioning arising from the presence of BC. Long-term monitoring revealed severe disruption to nitratation via the inhibition of both nitrite oxidizers (e.g., Nitrospira defluvii) and potential comammox species (e.g., Ca. Nitrospira nitrificans). Byproducts (BPs) more toxic than the parent compounds were found to persist at a high relative abundance, particularly in the presence of BC. Quantitative structure-activity relationship modeling determined that the physicochemical properties of the toxic BPs significantly differed from those of OTC and SMX. The results suggested that the BPs tended to mobilize and accumulate on the surface of the solids in the system (i.e., the BC and biofilm), disrupting the nitrifiers growing at the interface. Collectively, this study provides novel insights, demonstrating that the addition of adsorbents to biological systems may not necessarily be beneficial; rather, they may generate side effects for specific bacteria that have important ecosystem functions.
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Affiliation(s)
- Anh H Nguyen
- Department of Civil Engineering, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, South Korea
| | - Seungdae Oh
- Department of Civil Engineering, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, South Korea.
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Nguyen TT, Bui ATP, Le NTH, Vo HTN, Nguyen AH, Pham TD, Hara T, Yokota K, Matsutani M, Takatsuka Y, Nguyen ATV. Heat-stable spores of carotenoid-producing Bacillus marisflavi and non-pigmented Bacillus subtilis cooperatively promote growth, quality, and gut microbiota of white-leg shrimp. Benef Microbes 2023; 14:623-640. [PMID: 38350466 DOI: 10.1163/18762891-20230041] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 10/28/2023] [Indexed: 02/15/2024]
Abstract
We evaluated the benefits of heat-stable carotenoid-producing Bacillus marisflavi SH8 spores individually and in combination with non-pigmented Bacillus subtilis SH23 spores on growth, colour change, nutritional content, innate immunity, and gut microbiota of white-leg shrimp. White-leg shrimp (Litopenaeus vannamei; n = 30 per tank; 2 tanks per group) were provided feed without (control group) or with SH8, SH23, or mixed spores (total, 1 × 106 cfu/g pellet) for 28 d. The SH8 and SH8-23 combination groups had significantly higher specific growth rates (9.6 and 11.0%), improved red-colour score (4 scores), astaxanthin concentration (1.8- and 2.3-fold), lipid contents (30 and 50%), and superoxidase dismutase activity (8.5 and 12.3%) than that of the control group. Analysis of shrimp's gut microbiome using 16S rRNA metagenome sequencing revealed increased abundance of four useful species and reduced abundance of four harmful species in the combination group than in the control group. Heat-stable Bacillus spore combination improved growth parameters, nutrient content, red-colour score, live counts, and abundance of useful bacteria in the gut of L. vannamei. This is the first study to show the benefits of combining highly heat-stable pigmented and non-pigmented Bacillus spores and their possible mechanisms in a shrimp model.
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Affiliation(s)
- T T Nguyen
- Spobiotic Research Center, ANABIO R&D Ltd., Hanoi, Vietnam
| | - A T P Bui
- Spobiotic Research Center, ANABIO R&D Ltd., Hanoi, Vietnam
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Vietnam National University Hanoi, Hanoi, Vietnam
| | - N T H Le
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Vietnam National University Hanoi, Hanoi, Vietnam
| | - H T N Vo
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Vietnam National University Hanoi, Hanoi, Vietnam
| | - A H Nguyen
- Spobiotic Research Center, ANABIO R&D Ltd., Hanoi, Vietnam
- LiveSpo Pharma Ltd. Company, Hanoi, Vietnam
| | - T D Pham
- Faculty of Mathematics-Mechanics-Informatics, VNU University of Science, Vietnam National University Hanoi, Hanoi, Vietnam
| | - T Hara
- Environmental Microbiology Research Section, Laboratory for Complex Energy Processes, Institute of Advanced Energy, Kyoto University, Kyoto, Japan
| | - K Yokota
- Department of Agricultural Chemistry, Tokyo University of Agriculture, Tokyo, Japan
| | - M Matsutani
- Genome Research Center, Tokyo University of Agriculture, Tokyo, Japan
| | - Y Takatsuka
- Environmental Microbiology Research Section, Laboratory for Complex Energy Processes, Institute of Advanced Energy, Kyoto University, Kyoto, Japan
| | - A T V Nguyen
- Spobiotic Research Center, ANABIO R&D Ltd., Hanoi, Vietnam
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Vietnam National University Hanoi, Hanoi, Vietnam
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Metman MJH, Jonker PKC, Sondorp LHJ, van Hemel BM, Sywak MS, Gill AJ, Jansen L, van Diest PJ, van Ginhoven TM, Löwik CWGM, Nguyen AH, Robinson DJ, van Dam GM, Links TP, Coppes RP, Fehrmann RSN, Kruijff S. MET-receptor targeted fluorescent imaging and spectroscopy to detect multifocal papillary thyroid cancer. Eur J Nucl Med Mol Imaging 2023:10.1007/s00259-023-06525-5. [PMID: 38017325 DOI: 10.1007/s00259-023-06525-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/14/2023] [Indexed: 11/30/2023]
Abstract
PURPOSE Multifocal disease in PTC is associated with an increased recurrence rate. Multifocal disease (MD) is underdiagnosed with the current gold standard of pre-operative ultrasound staging. Here, we evaluate the use of EMI-137 targeted molecular fluorescence-guided imaging (MFGI) and spectroscopy as a tool for the intra-operative detection of uni- and multifocal papillary thyroid cancer (PTC) aiming to improve disease staging and treatment selection. METHODS A phase-1 study (NCT03470259) with EMI-137 was conducted to evaluate the possibility of detecting PTC using MFGI and quantitative fiber-optic spectroscopy. RESULTS Fourteen patients underwent hemi- or total thyroidectomy (TTX) after administration of 0.09 mg/kg (n = 1), 0.13 mg/kg (n = 8), or 0.18 mg/kg (n = 5) EMI-137. Both MFGI and spectroscopy could differentiate PTC from healthy thyroid tissue after administration of EMI-137, which binds selectively to MET in PTC. 0.13 mg/kg was the lowest dosage EMI-137 that allowed for differentiation between PTC and healthy thyroid tissue. The smallest PTC focus detected by MFGI was 1.4 mm. MFGI restaged 80% of patients from unifocal to multifocal PTC compared to ultrasound. CONCLUSION EMI-137-guided MFGI and spectroscopy can be used to detect multifocal PTC. This may improve disease staging and treatment selection between hemi- and total thyroidectomy by better differentiation between unifocal and multifocal disease. TRIAL REGISTRATION NCT03470259.
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Affiliation(s)
- Madelon J H Metman
- Department of Surgery, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
| | - Pascal K C Jonker
- Department of Surgery, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
- Department of Endocrine Surgery and Surgical Oncology, Royal North Shore Hospital, St Leonards, Australia
| | - Luc H J Sondorp
- Department of Surgery, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
- Department of Biomedical Sciences of Cell & Systems - Section Molecular Cell Biology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Bettien M van Hemel
- Department of Pathology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Mark S Sywak
- Department of Endocrine Surgery and Surgical Oncology, Royal North Shore Hospital, St Leonards, Australia
| | - Anthony J Gill
- NSW Health Pathology, Department of Anatomical Pathology, Royal North Shore Hospital, St Leonards, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
- Cancer Diagnosis and Pathology Group Kolling Institute of Medical Research, Royal North Shore Hospital, St Leonards, Australia
| | - Liesbeth Jansen
- Department of Surgery, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
| | - Paul J van Diest
- Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins, Baltimore, USA
| | | | - Clemens W G M Löwik
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, the Netherlands
| | - Anh H Nguyen
- Department of Pathology, Erasmus MC, Rotterdam, the Netherlands
| | - Dominic J Robinson
- Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - Gooitzen M van Dam
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
- AxelaRx/TRACER B.V, Groningen, the Netherlands
| | - Thera P Links
- Department of Endocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Rob P Coppes
- Department of Biomedical Sciences of Cell & Systems - Section Molecular Cell Biology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Rudolf S N Fehrmann
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Schelto Kruijff
- Department of Surgery, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands.
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.
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Zhang J, Nguyen AH, Jilani D, Trigo Torres RS, Schmiess-Heine L, Le T, Xia X, Cao H. Consecutive treatments of methamphetamine promote the development of cardiac pathological symptoms in zebrafish. PLoS One 2023; 18:e0294322. [PMID: 37976248 PMCID: PMC10655962 DOI: 10.1371/journal.pone.0294322] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 10/30/2023] [Indexed: 11/19/2023] Open
Abstract
Chronic methamphetamine use, a widespread drug epidemic, has been associated with cardiac morphological and electrical remodeling, leading to the development of numerous cardiovascular diseases. While methamphetamine has been documented to induce arrhythmia, most results originate from clinical trials from users who experienced different durations of methamphetamine abuse, providing no documentation on the use of methamphetamine in standardized settings. Additionally, the underlying molecular mechanism on how methamphetamine affects the cardiovascular system remains elusive. A relationship was sought between cardiotoxicity and arrhythmia with associated methamphetamine abuse in zebrafish to identify and to understand the adverse cardiac symptoms associated with methamphetamine. Zebrafish were first treated with methamphetamine 3 times a week over a 2-week duration. Immediately after treatment, zebrafish underwent electrocardiogram (ECG) measurement using an in-house developed acquisition system for electrophysiological analysis. Subsequent analyses of cAMP expression and Ca2+ regulation in zebrafish cardiomyocytes were conducted. cAMP is vital to development of myocardial fibrosis and arrhythmia, prominent symptoms in the development of cardiovascular diseases. Ca2+ dysregulation is also a factor in inducing arrhythmias. During the first week of treatment, zebrafish that were administered with methamphetamine displayed a decrease in heart rate, which persisted throughout the second week and remained significantly lower than the heart rate of untreated fish. Results also indicate an increased heart rate variability during the early stage of treatment followed by a decrease in the late stage for methamphetamine-treated fish over the duration of the experiment, suggesting a biphasic response to methamphetamine exposure. Methamphetamine-treated fish also exhibited reduced QTc intervals throughout the experiment. Results from the cAMP and Ca2+ assays demonstrate that cAMP was upregulated and Ca2+ was dysregulated in response to methamphetamine treatment. Collagenic assays indicated significant fibrotic response to methamphetamine treatment. These results provide potential insight into the role of methamphetamine in the development of fibrosis and arrhythmia due to downstream effectors of cAMP.
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Affiliation(s)
- Jimmy Zhang
- Department of Biomedical Engineering, University of California-Irvine, Irvine, CA, United States of America
| | - Anh H. Nguyen
- Department of Electrical Engineering and Computer Science, University of California-Irvine, Irvine, CA, United States of America
- Sensoriis, Inc., Edmonds, WA, United States of America
| | - Daniel Jilani
- Department of Electrical Engineering and Computer Science, University of California-Irvine, Irvine, CA, United States of America
| | | | - Lauren Schmiess-Heine
- Department of Electrical Engineering and Computer Science, University of California-Irvine, Irvine, CA, United States of America
| | - Tai Le
- Department of Biomedical Engineering, University of California-Irvine, Irvine, CA, United States of America
| | - Xing Xia
- Department of Electrical Engineering and Computer Science, University of California-Irvine, Irvine, CA, United States of America
| | - Hung Cao
- Department of Biomedical Engineering, University of California-Irvine, Irvine, CA, United States of America
- Department of Electrical Engineering and Computer Science, University of California-Irvine, Irvine, CA, United States of America
- Sensoriis, Inc., Edmonds, WA, United States of America
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Nguyen AH, Davoudi S, Dong K, Bains A, Ness S, Subramanian ML, Siegel NH, Chen X. Socioeconomic Disparities in Patients Receiving Intravitreal Injections for Age-Related Macular Degeneration Amid the COVID-19 Pandemic. J Vitreoretin Dis 2023; 7:376-381. [PMID: 37701269 PMCID: PMC10311364 DOI: 10.1177/24741264231173771] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Purpose: To determine the effects of socioeconomic factors on visit adherence and the resultant visual outcomes for patients receiving intravitreal injections for neovascular age-related macular degeneration during the COVID-19 pandemic. Methods: In this retrospective case-control study, medical records were reviewed to collect appointment attendance, age, sex, self-reported race/ethnicity, primary language, marital status, insurance, distance from clinic, and Area Deprivation Index (ADI), a measure of socioeconomic disadvantage. Multivariate regression models were created to determine differences in socioeconomic factors between individuals who attended (show group) and those who did not attend (no-show group) appointments. Results: The study enrolled 126 patients in the show group and 115 in the no-show group. On univariate analysis, nonadherence was significantly higher in non-White patients than in White patients (P = .04), urban sites than in suburban sites (P = 1.7 × 10-4), and non-English-speaking patients than in English-speaking patients (P = 4.0 × 10-3). The associations remained significant in multivariate analysis for non-English-speaking patients (P = .03) and urban-site patients (P = .01) after adjusting for age, sex, self-reported race/ethnicity, primary language, marital status, insurance, distance from clinic, site of visit, and ADI. At 6 months and 1 year, a 1-, 2-, and 3-line vision loss was significantly higher in the no-show group than in the show group on univariate and multivariate analysis after adjusting for age, sex, race, lens status, and presence of glaucoma and diabetic retinopathy. Conclusions: Non-English-speaking patients and urban-based patients were less likely to present for intravitreal injection appointments during the initial peak of the COVID-19 pandemic. This disparity translated to worse vision outcomes at 6 months and 1 year.
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Affiliation(s)
- Anh H. Nguyen
- Boston University School of Medicine, Boston, MA, USA
- Department of Ophthalmology, Boston University School of Medicine, Boston MA, USA
| | - Samaneh Davoudi
- Boston University School of Medicine, Boston, MA, USA
- Department of Ophthalmology, Boston University School of Medicine, Boston MA, USA
| | - Kaylin Dong
- Boston University School of Medicine, Boston, MA, USA
| | - Ashank Bains
- Boston University School of Medicine, Boston, MA, USA
| | - Steven Ness
- Boston University School of Medicine, Boston, MA, USA
- Department of Ophthalmology, Boston University School of Medicine, Boston MA, USA
| | - Manju L. Subramanian
- Boston University School of Medicine, Boston, MA, USA
- Department of Ophthalmology, Boston University School of Medicine, Boston MA, USA
| | - Nicole H. Siegel
- Boston University School of Medicine, Boston, MA, USA
- Department of Ophthalmology, Boston University School of Medicine, Boston MA, USA
| | - Xuejing Chen
- Boston University School of Medicine, Boston, MA, USA
- Department of Ophthalmology, Boston University School of Medicine, Boston MA, USA
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Tran HN, Nguyen TNT, Tran NTK, Nguyen LT, Vu HD, Nguyen AH, Trinh NTH. Preventability of Adverse Drug Reactions Related to Antibiotics: An Assessment Based on Spontaneous Reporting System. Ther Innov Regul Sci 2023:10.1007/s43441-023-00552-y. [PMID: 37389792 DOI: 10.1007/s43441-023-00552-y] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 06/13/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND Antibiotics are commonly used in both outpatient and inpatient settings and are responsible for the majority of adverse drug reaction (ADR) reports. We aimed to characterize spontaneously reported ADRs associated with antibiotics and assessing the preventability of these ADRs in a Vietnamese setting. MATERIALS AND METHODS We conducted a retrospective descriptive study based on ADRs related to antibiotics spontaneously reported by healthcare workers to the National Pharmacovigilance Database of Vietnam (NPDV) between June 2018 and May 2019. The characteristics of included reports were descriptively analyzed. The preventability of reported ADRs was assessed using a standardized preventability scale. We identified the leading causes and described the characteristics associated with preventable ADRs (pADRs). RESULTS We included 6385 antibiotic-related reports from a total of 12,056 reports submitted to the NPDV during the study period. Beta-lactam antibiotics, mostly broad-spectrum with parenteral route, were suspected in the majority cases. The most commonly reported pADRs were allergic reactions, mostly classified under skin and subcutaneous tissue disorders. Of all included cases, 537 cases (8.4%) were deemed as associated with pADRs. Major causes of pADRs include potentially inappropriate prescribing (352/537, 65.5%) and re-administration of antibiotics causing prior allergy/allergies (99/537, 18.4%). The majority of pADRs involved the use of beta-lactam antibiotics with inappropriate indications. CONCLUSION ADRs related to antibiotic use represent more than half of ADRs spontaneously reported in Vietnam. Approximately one in every ten reported cases is associated with pADRs. The majority pADRs can be prevented through simple improvement in antibiotic prescribing practices.
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Affiliation(s)
- Ha N Tran
- National Drug Information and Adverse Drug Reaction Monitoring Centre, Hanoi University of Pharmacy, Hanoi, Vietnam
| | - Tien N T Nguyen
- National Drug Information and Adverse Drug Reaction Monitoring Centre, Hanoi University of Pharmacy, Hanoi, Vietnam
| | - Ngan T K Tran
- National Drug Information and Adverse Drug Reaction Monitoring Centre, Hanoi University of Pharmacy, Hanoi, Vietnam
| | - Ly T Nguyen
- National Drug Information and Adverse Drug Reaction Monitoring Centre, Hanoi University of Pharmacy, Hanoi, Vietnam
| | - Hoa D Vu
- National Drug Information and Adverse Drug Reaction Monitoring Centre, Hanoi University of Pharmacy, Hanoi, Vietnam
| | - Anh H Nguyen
- National Drug Information and Adverse Drug Reaction Monitoring Centre, Hanoi University of Pharmacy, Hanoi, Vietnam.
| | - Nhung T H Trinh
- PharmacoEpidemiology and Drug Safety Research Group, Department of Pharmacy, and, PharmaTox Strategic Research Initiative, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
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Nguyen AH, Oh S. Effect of antibiotic cocktail exposure on functional disturbance of nitrifying microbiome. J Hazard Mater 2023; 455:131571. [PMID: 37178533 DOI: 10.1016/j.jhazmat.2023.131571] [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] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/17/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023]
Abstract
The present study quantitatively determined the degree and type of functional disturbance in the nitrifying microbiome caused by exposure to a single oxytetracycline (OTC) and a two-antibiotic mixture containing OTC and sulfamethoxazole (SMX). While the single antibiotic had a pulsed disturbance on nitritation that was recoverable within three weeks, the antibiotic mixture caused a more significant pulsed disturbance on nitritation and a potential press disturbance on nitratation that was not recoverable for over five months. Bioinformatic analysis revealed significant perturbations for both canonical nitrite-oxidizing (Nitrospira defluvii) and potential complete ammonium-oxidizing (Ca. Nitrospira nitrificans) populations that were strongly associated with the press perturbation on nitratation. In addition to this functional disturbance, the antibiotic mixture reduced the biosorption of OTC and altered its biotransformation pathways, resulting in different transformation products compared with those produced when OTC was treated as a single antibiotic. Collectively, this work elucidated how the antibiotic mixture can affect the degree, type, and duration of the functional disturbance on nitrifying microbiome and offer new insights into the environmental consequences of antibiotic residues (e.g., their fate, transformation, and ecotoxicity) when present as an antibiotic mixture rather than single antibiotics.
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Affiliation(s)
- Anh H Nguyen
- Department of Civil Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Seungdae Oh
- Department of Civil Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea.
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van den Ende NS, Nguyen AH, Jager A, Kok M, Debets R, van Deurzen CHM. Triple-Negative Breast Cancer and Predictive Markers of Response to Neoadjuvant Chemotherapy: A Systematic Review. Int J Mol Sci 2023; 24:ijms24032969. [PMID: 36769287 PMCID: PMC9918290 DOI: 10.3390/ijms24032969] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/27/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Around 40-50% of all triple-negative breast cancer (TNBC) patients achieve a pathological complete response (pCR) after treatment with neoadjuvant chemotherapy (NAC). The identification of biomarkers predicting the response to NAC could be helpful for personalized treatment. This systematic review provides an overview of putative biomarkers at baseline that are predictive for a pCR following NAC. Embase, Medline and Web of Science were searched for articles published between January 2010 and August 2022. The articles had to meet the following criteria: patients with primary invasive TNBC without distant metastases and patients must have received NAC. In total, 2045 articles were screened by two reviewers resulting in the inclusion of 92 articles. Overall, the most frequently reported biomarkers associated with a pCR were a high expression of Ki-67, an expression of PD-L1 and the abundance of tumor-infiltrating lymphocytes, particularly CD8+ T cells, and corresponding immune gene signatures. In addition, our review reveals proteomic, genomic and transcriptomic markers that relate to cancer cells, the tumor microenvironment and the peripheral blood, which also affect chemo-sensitivity. We conclude that a prediction model based on a combination of tumor and immune markers is likely to better stratify TNBC patients with respect to NAC response.
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Affiliation(s)
- Nadine S. van den Ende
- Department of Pathology, Erasmus MC Cancer Institute, Erasmus University Medical Centre, 3015 GD Rotterdam, The Netherlands
- Correspondence: ; Tel.: +31-640213383
| | - Anh H. Nguyen
- Department of Pathology, Erasmus MC Cancer Institute, Erasmus University Medical Centre, 3015 GD Rotterdam, The Netherlands
| | - Agnes Jager
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Centre, 3015 GD Rotterdam, The Netherlands
| | - Marleen Kok
- Department of Medical Oncology, Tumor Biology & Immunology, Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands
| | - Reno Debets
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Centre, 3015 GD Rotterdam, The Netherlands
| | - Carolien H. M. van Deurzen
- Department of Pathology, Erasmus MC Cancer Institute, Erasmus University Medical Centre, 3015 GD Rotterdam, The Netherlands
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kania S, Nguyen AH, Oztekin A, Webb III E. Replica-Averaging: An algorithm to study mechano-reactive processes for polymers under flow conditions. J Chem Phys 2022; 157:194906. [DOI: 10.1063/5.0109324] [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: 11/14/2022] Open
Abstract
A new method based on quasi-independent parallel simulations approach, replica-averaging, has been developed to study the influence of flow on mechanical force-mediated polymer processes such as denaturation and breaking of bonds. This method considerably mitigates the unphysical prediction of force-mediated events inherent in Brownian dynamics (BD) polymer chain simulations that employ instantaneous force profile-based criteria to identify the occurrence of such events. This inaccuracy in predicting force-mediated event kinetics is due to high fluctuations of the instantaneous force profile around the average force. Replica-averaging reduces such high fluctuation effects by computing a force profile that faithfully represents the average force profile of the polymer chain conformation, which is then used to predict reactive events. For transient conformation conditions, the replica-averaged method more accurately predicts mechano-reactive kinetics than the time-averaged method, typically employed to reduce the unphysical prediction of force-mediated events in BD simulations. Further, the influence of the proposed replica-averaging method parameters on the accuracy of predicting the true average force profile along the polymer is discussed.
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Affiliation(s)
- Sagar kania
- Mechanical Engineering, Lehigh University, United States of America
| | | | - Alparslan Oztekin
- Mechanical Engineering and Mechanics, Lehigh University, United States of America
| | - Edmund Webb III
- Mechanical Engineering & Mechanics, Lehigh University Department of Mechanical Engineering and Mechanics, United States of America
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11
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Xia X, Vishwanath M, Zhang J, Sarafan S, Trigo Torres RS, Le T, Lau MP, Nguyen AH, Cao H. Microelectrode array membranes to simultaneously assess cardiac and neurological signals of xenopus laevis under chemical exposures and environmental changes. Biosens Bioelectron 2022; 210:114292. [DOI: 10.1016/j.bios.2022.114292] [Citation(s) in RCA: 1] [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] [Received: 03/09/2022] [Revised: 04/12/2022] [Accepted: 04/15/2022] [Indexed: 11/26/2022]
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12
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Abstract
A 25-year-old man presented with a 2-month history of progressively worsening left eye pain and an atypical corneal ring infiltrate. His condition deteriorated despite topical antibiotic therapy. Cultures for bacteria, fungus and acanthamoeba, repeated twice, all demonstrated no growth. On third corneal scraping, culture on Middlebrook agar grew colonies after 3 weeks of incubation. Sixteen-second deep sequencing identified Nocardia sienata as the pathogen. This species of Nocardia has not previously been described as a causative pathogen for infectious keratitis. Sloughing and loose epithelium with recurrent filament formation are unusual in infectious keratitis and could be associated with this species. In culture-negative cases, clinicians should consider Nocardia as a cause of keratitis despite its rarity outside of south Asia and use steroids cautiously. Next generation sequencing technology may facilitate identification of the causate of keratitis and can be especially useful in culture-negative cases and with unexpected pathogens.
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Affiliation(s)
- Arman Mosenia
- School of Medicine, UC San Francisco, San Francisco, California, USA
| | - Anh H Nguyen
- University of California San Francisco, San Francisco, California, USA
| | - Mark R Mandel
- California Pacific Medical Center, San Francisco, California, USA
| | - Gerami D Seitzman
- Ophthalmology, University of California San Francisco, San Francisco, California, USA
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13
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Le T, Zhang J, Nguyen AH, Trigo Torres RS, Vo K, Dutt N, Lee J, Ding Y, Xu X, Lau MPH, Cao H. A novel wireless ECG system for prolonged monitoring of multiple zebrafish for heart disease and drug screening studies. Biosens Bioelectron 2022; 197:113808. [PMID: 34801796 DOI: 10.1016/j.bios.2021.113808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 08/05/2021] [Revised: 11/05/2021] [Accepted: 11/13/2021] [Indexed: 12/19/2022]
Abstract
Zebrafish and their mutant lines have been extensively used in cardiovascular studies. In the current study, the novel system, Zebra II, is presented for prolonged electrocardiogram (ECG) acquisition and analysis for multiple zebrafish within controllable working environments. The Zebra II is composed of a perfusion system, apparatuses, sensors, and an in-house electronic system. First, the Zebra II is validated in comparison with a benchmark system, namely iWORX, through various experiments. The validation displayed comparable results in terms of data quality and ECG changes in response to drug treatment. The effects of anesthetic drugs and temperature variation on zebrafish ECG were subsequently investigated in experiments that need real-time data assessment. The Zebra II's capability of continuous anesthetic administration enabled prolonged ECG acquisition up to 1 h compared to that of 5 min in existing systems. The novel, cloud-based, automated analysis with data obtained from four fish further provided a useful solution for combinatorial experiments and helped save significant time and effort. The system showed robust ECG acquisition and analytics for various applications including arrhythmia in sodium induced sinus arrest, temperature-induced heart rate variation, and drug-induced arrhythmia in Tg(SCN5A-D1275N) mutant and wildtype fish. The multiple channel acquisition also enabled the implementation of randomized controlled trials on zebrafish models. The developed ECG system holds promise and solves current drawbacks in order to greatly accelerate drug screening applications and other cardiovascular studies using zebrafish.
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Affiliation(s)
- Tai Le
- Department of Electrical Engineering and Computer Science, UC Irvine, Irvine, CA, 92697, USA
| | - Jimmy Zhang
- Department of Biomedical Engineering, UC Irvine, Irvine, CA, 92697, USA
| | - Anh H Nguyen
- Department of Electrical Engineering and Computer Science, UC Irvine, Irvine, CA, 92697, USA; Sensoriis., Inc, Edmonds, WA, 98026, USA
| | | | - Khuong Vo
- Donald Bren School of Information and Computer Sciences, UC Irvine, CA 92697, USA
| | - Nikil Dutt
- Donald Bren School of Information and Computer Sciences, UC Irvine, CA 92697, USA
| | - Juhyun Lee
- Department of Bioengineering, University of Texas, Arlington, TX, 76019, USA
| | - Yonghe Ding
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Xiaolei Xu
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, 55905, USA
| | | | - Hung Cao
- Department of Electrical Engineering and Computer Science, UC Irvine, Irvine, CA, 92697, USA; Department of Biomedical Engineering, UC Irvine, Irvine, CA, 92697, USA; Sensoriis., Inc, Edmonds, WA, 98026, USA.
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14
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Nguyen HT, Nguyen AH, Lam HM, Nguyen TT. Association of body mass index with non-achievement of target low-density lipoprotein level in older patients at very high cardiovascular risk: a multicentre study. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2801] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Low-density lipoprotein cholesterol (LDL-c) is a well-established risk factor for atherosclerotic cardiovascular disease. Nonetheless, the association of body mass index (BMI) with non-achievement of target LDL-c level in older patients with type 2 diabetes (T2D) at very high cardiovascular risk is unknown.
Purpose
To investigate whether BMI is associated with non-achievement of target LDL-c level in older patients with T2D at very high cardiovascular risk.
Methods
From December 2019 to June 2020, in this multicentre prospective cross-sectional study, we enrolled 733 consecutive outpatients aged ≥60 years with T2D at very high cardiovascular risk in whom LDL-c levels could be measured after any stable lipid-lowering therapy for ≥6 months. Achievement of target lipid level was assessed based on the 2019 guidelines of the European Society of Cardiology for dyslipidaemia. Factors associated with non-achievement of target LDL-c level were determined using logistic regression analysis.
Results
Of the total cases (age, 68.6±7.2 years; men, 51.3%), 654 patients (89.2%) did not achieve an aggressive target LDL-c level of <1.4 mmol/L. Target non-high-density lipoprotein cholesterol level of <2.2 mmol/L and triglyceride level of <1.7 mmol/L were not achieved in 87.9% and 56.2% of the patients, respectively. In the multivariate model, BMI was the only factor associated with failure to achieve target LDL-c level, but not other factors such as age, sex, education level, smoking, and comorbidities. The adjusted odds ratio were 0.88 (95% confidence interval [95% CI], 0.24–3.21; P=0.84) for underweight, 1.57 (95% CI, 0.87–2.81; P=0.13) for overweight, and 2.63 (95% CI, 1.43–4.83; P=0.002) for obesity (normal weight was set as reference) status.
Conclusions
Non-achievement of target LDL-c level is highly prevalent in older patients with T2D at very high cardiovascular risk. Obesity, defined by BMI, can be a factor associated with non-achievement of the target. The findings highlight the importance of management of lipid levels in older patients with T2D.
Funding Acknowledgement
Type of funding sources: None. Figure 1
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Affiliation(s)
- H T Nguyen
- Ho Chi Minh City University of Medicine and Pharmacy, Geriatrics and Gerontology, Ho Chi Minh, Viet Nam
| | | | - H M Lam
- 175 Military Hospital, Ho Chi Minh, Viet Nam
| | - T T Nguyen
- Thong Nhat Hospital, CARDIOLOGY, Ho Chi Minh, Viet Nam
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15
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Affiliation(s)
- Anh H. Nguyen
- Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Sagar Kania
- Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Xuanhong Cheng
- Department of Material Science and Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Alparslan Oztekin
- Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - X. Frank Zhang
- Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pennsylvania 18015, United States
- Department of Bioengineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Edmund B. Webb
- Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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16
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Dao MH, Phan LT, Cao TM, Luong QC, Pham HTT, Vu NHP, Khuu NV, Nguyen TV, Nguyen LT, Nguyen HT, Nguyen AH, Huynh LKT, Huynh TP, Nguyen QH, Truong HC, Nguyen HM, Trinh TX, Nguyen DT, Nguyen TB, Do HT, Pham QD, Nguyen TV. Genome-wide analysis of SARS-CoV-2 strains circulating in Vietnam: Understanding the nature of the epidemic and role of the D614G mutation. J Med Virol 2021; 93:5660-5665. [PMID: 34042186 PMCID: PMC8242548 DOI: 10.1002/jmv.27103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 11/18/2022]
Abstract
Genome‐wide analysis of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) strains is essential to better understand infectivity and virulence and to track coronavirus disease 2019 (COVID‐19) cases and outbreaks. We performed whole‐genome sequencing of 27 SARS‐CoV‐2 strains isolated between January 2020 and April 2020. A total of 54 mutations in different genomic regions was found. The D614G mutation, first detected in March 2020, was identified in 18 strains and was more likely associated with a lower cycle threshold (<25) in real‐time reverse‐transcription polymerase chain reaction diagnostic tests than the original D614 (prevalence ratio = 2.75; 95% confidence interval, 1.19–6.38). The integration of sequencing and epidemiological data suggests that SARS‐CoV‐2 transmission in both quarantine areas and in the community in Vietnam occur at the beginning of the epidemic although the country implemented strict quarantine quite early, with strict contact tracing, and testing. These findings provide insights into the nature of the epidemic, as well as shape strategies for COVID‐19 prevention and control in Vietnam.
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Affiliation(s)
- Manh H Dao
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Lan T Phan
- Directorial Board, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thang M Cao
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quang C Luong
- Department for Disease Control and Prevention, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Hang T T Pham
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Nhung H P Vu
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Nghia V Khuu
- Department for Disease Control and Prevention, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thinh V Nguyen
- Department for Disease Control and Prevention, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Long T Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Hieu T Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Anh H Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Loan Kim Thi Huynh
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thao P Huynh
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quan H Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Hieu C Truong
- Department for Disease Control and Prevention, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | | | | | - Dung T Nguyen
- Ho Chi Minh City Center for Diseases Control, Ho Chi Minh City, Vietnam
| | | | - Hung T Do
- Pasteur Institute of Nha Trang, Nha Trang, Vietnam
| | - Quang D Pham
- Planning Division, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam.,Training Center, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thuong V Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
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17
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Hoang DM, Nguyen KT, Nguyen AH, Nguyen BN, Nguyen LT. Allogeneic human umbilical cord-derived mesenchymal stem/stromal cells for chronic obstructive pulmonary disease (COPD): study protocol for a matched case-control, phase I/II trial. BMJ Open 2021; 11:e045788. [PMID: 33986057 PMCID: PMC8126295 DOI: 10.1136/bmjopen-2020-045788] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION The global prevalence of chronic obstructive pulmonary disease (COPD) is increasing, and it has become a major public health burden worldwide, including in Vietnam. A large body of preclinical and clinical studies supports the safety of mesenchymal stem/stromal cells (MSCs) in the treatment of lung injury, including COPD. The aim of this trial is to investigate the safety and potential therapeutic efficacy of allogeneic administration of umbilical cord-derived MSCs (UC-MSCs) as a supplementary intervention in combination with standard COPD medication treatments in patients with moderate-to-severe COPD based on the Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2019 and Vietnam Ministry of Health's guidelines. METHODS AND ANALYSIS This matched case-control phase I/II trial is conducted at Vinmec Times City International Hospital, Hanoi, Vietnam between June 2020 and December 2021. In this study, 40 patients will be enrolled and assigned into two age-matched, gender-matched and COPD condition-matched groups, including a UC-MSC group and a control group. Both groups will receive standard COPD medication treatment based on the GOLD 2019 guidelines and the Vietnam Ministry of Health protocol. The UC-MSC group will receive two doses of thawed UC-MSC product with an intervention interval of 3 months. The primary outcome measures will include the incidence of prespecified administration-associated adverse events and serious adverse events. The efficacy will be evaluated based on the absolute changes in the number of admissions, arterial blood gas analysis, lung function and lung fibrosis via CT scan and chest X-ray. The clinical evaluation will be conducted at baseline and 3, 6 and 12 months postintervention. ETHICS AND DISSEMINATION Ethical approval was secured from the Ethical Committee of Vinmec International Hospital (number:166/2019/QĐ-VMEC) and Vietnam Ministry of Health (number:2002/QĐ-BYT). The results will be reported to trial collaborators, publication in peer-reviewed academic journals. TRIAL REGISTRATION NUMBER NCT04433104.
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Affiliation(s)
- Duc M Hoang
- Department of Research & Development, Vinmec Research Institute of Stem Cell and Gene Technology, Vinmec Heathcare System, Hanoi, Vietnam
| | - Kien T Nguyen
- Clinical Research Department, Vinmec Research Institute of Stem Cell and Gene Technology, Vinmec Healthcare System, Hanoi, Viet Nam
| | - Anh H Nguyen
- Department of Internal Medicine, Vinmec Times City International Hospital, Hanoi, Viet Nam
| | - Bach N Nguyen
- Department of Internal Medicine, Vinmec Times City International Hospital, Hanoi, Viet Nam
| | - Liem Thanh Nguyen
- Vinmec Research Institute of Stem Cell and Gene Technology, Vinmec Health Care System, Hanoi, Viet Nam
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18
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Dao MH, Nguyen HT, Nguyen TV, Nguyen AH, Luong QC, Vu NHP, Pham HTT, Nguyen TNT, Thach DH, Nguyen LV, Bui LV, Nguyen HM, Huynh LKT, Nguyen LT, Cao TM, Pham QD, Nguyen TV, Phan LT. New SARS-CoV-2 variant of concern imported from the United Kingdom to Vietnam, December 2020. J Med Virol 2021; 93:2628-2630. [PMID: 33638484 PMCID: PMC8013811 DOI: 10.1002/jmv.26908] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/16/2021] [Accepted: 02/19/2021] [Indexed: 12/24/2022]
Affiliation(s)
- Manh H Dao
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Hieu T Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thinh V Nguyen
- Department for Disease Control and Prevention, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Anh H Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quang C Luong
- Department for Disease Control and Prevention, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Nhung H P Vu
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Hang T T Pham
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thao N T Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Dung H Thach
- Tra Vinh Provincial Center for Disease Control, Tra Vinh City, Vietnam
| | - Lo V Nguyen
- Tra Vinh Provincial Center for Disease Control, Tra Vinh City, Vietnam
| | - Luan V Bui
- Tra Vinh Hospital for Tuberculosis and Respiratory Diseases, Tra Vinh City, Vietnam
| | - Hang M Nguyen
- General Department of Preventive Medicine, Hanoi, Vietnam
| | - Loan K T Huynh
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Long T Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thang M Cao
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quang D Pham
- Planning Division, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam.,Training Center, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thuong V Nguyen
- Directorial Board, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Lan T Phan
- Directorial Board, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
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19
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Mai NL, Do HT, Hoang NH, Nguyen AH, Tran KQ, Meijer EJ, Trinh TT. Elucidating the Role of Tetraethylammonium in the Silicate Condensation Reaction from Ab Initio Molecular Dynamics Simulations. J Phys Chem B 2020; 124:10210-10218. [PMID: 33119320 PMCID: PMC7735729 DOI: 10.1021/acs.jpcb.0c06607] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The understanding of the formation of silicate oligomers in the initial stage of zeolite synthesis is important. The use of organic structure-directing agents (OSDAs) is known to be a key factor in the formation of different silicate species and the final zeolite structure. For example, tetraethylammonium ion (TEA+) is a commonly used organic template for zeolite synthesis. In this study, ab initio molecular dynamics (AIMD) simulation is used to provide an understanding of the role of TEA+ in the formation of various silicate oligomers, ranging from dimer to 4-ring. Calculated free-energy profiles of the reaction pathways show that the formation of a 4-ring structure has the highest energy barrier (97 kJ/mol). The formation of smaller oligomers such as dimer, trimer, and 3-ring has lower activation barriers. The TEA+ ion plays an important role in regulating the predominant species in solution via its coordination with silicate structures during the condensation process. The kinetics and thermodynamics of the oligomerization reaction indicate a more favorable formation of the 3-ring over the 4-ring structure. The results from AIMD simulations are in line with the experimental observation that TEA+ favors the 3-ring and double 3-ring in solution. The results of this study imply that the role of OSDAs is not only important for the host-guest interaction but also crucial for controlling the reactivity of different silicate oligomers during the initial stage of zeolite formation.
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Affiliation(s)
- Ngoc Lan Mai
- Faculty of Applied Sciences, Ton Duc Thang University, 19 Nguyen Huu Tho Str., Tan Phong Ward, District 7, Ho Chi Minh City, Vietnam
| | - Ha T Do
- Faculty of Applied Sciences, Ton Duc Thang University, 19 Nguyen Huu Tho Str., Tan Phong Ward, District 7, Ho Chi Minh City, Vietnam
| | - Nguyen Hieu Hoang
- Department of Materials and Nanotechnology, SINTEF Industry, 7034 Trondheim, Norway
| | - Anh H Nguyen
- Electrical Engineering and Computer Sciences, University of California Irvine, Irvine, California 92697, United States
| | - Khanh-Quang Tran
- Department of Energy and Process Engineering, Norwegian University of Science and Technology, Kolbjørn Hejes vei 1B, 7491 Trondheim, Norway
| | - Evert Jan Meijer
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam 1012 WX, The Netherlands
| | - Thuat T Trinh
- Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
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20
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Le T, Zhang J, Xia X, Xu X, Clark I, Schmiess-Heine L, Nguyen AH, Lau MPH, Cao H. Continuous Electrocardiogram Monitoring in Zebrafish with Prolonged Mild Anesthesia. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2020:2610-2613. [PMID: 33018541 DOI: 10.1109/embc44109.2020.9175576] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The zebrafish model has been demonstrated as an ideal vertebrate model system for a diverse range of biological studies. Along with conventional approaches, monitoring and analysis of zebrafish electrocardiogram (ECG) have been utilized for cardio-physiological screening and elucidation. ECG monitoring has been carried out with fish treated with anesthetic drugs, rendering the short period of time in recording the signals (<5 min). In this work, a prolonged sedation system for continuous ECG monitoring of multiple zebrafish was proposed and developed. We built a circulation system to provide prolonged mild anesthesia which allows more consistent and intrinsic ECG measurement. The use of prolonged anesthesia helped reduce the concentration of the anesthetic drug (MS222 or Tricaine) from 200 mg/L to 100 mg/L and even lower; thus, maintaining the integrity of intrinsic ECG. Moreover, heartrate variation during recording was investigated, showing minute changes (±3.2 beats per minute - BPM). The development of this prolonged ECG monitoring system would open the possibility of long-term monitoring for studies such as drug screening and forward genetic screening.
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21
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Phan LT, Nguyen TV, Huynh LKT, Dao MH, Vo TAN, Vu NHP, Pham HTT, Nguyen HT, Nguyen TT, Le HQ, Nguyen TV, Nguyen QH, Huynh TP, Nguyen SN, Nguyen AH, Nguyen NT, Nguyen TNT, Nguyen LT, Luong QC, Cao TM, Pham QD. Clinical features, isolation, and complete genome sequence of severe acute respiratory syndrome coronavirus 2 from the first two patients in Vietnam. J Med Virol 2020; 92:2209-2215. [PMID: 32462705 PMCID: PMC7283826 DOI: 10.1002/jmv.26075] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/25/2020] [Accepted: 05/26/2020] [Indexed: 01/08/2023]
Abstract
In January 2020, we identified two severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2)‐infected patients in a familial cluster with one person coming from Wuhan, China. The complete genome sequences of two SARS‐CoV‐2 strains isolated from these patients were identical and 99.98% similar to strains isolated in Wuhan. This is genetically suggestive of human‐to‐human transmission of SARS‐CoV‐2 and indicates Wuhan as the most plausible origin of the early outbreak in Vietnam. The younger patient had a mild upper respiratory illness and a brief viral shedding, whereas the elderly with multi‐morbidity had pneumonia, prolonged viral shedding, and residual lung damage. The evidence of nonsynonymous substitutions in the ORF1ab region of the viral sequence warrants further studies. Transmission of SARS‐CoV‐2 is a global public health and clinical concern. This report describes clinical features, virus isolation, and complete genome sequences from the first two SARS‐CoV‐2 infections in Vietnam. Epidemiological and phylogenetic analysis suggested evidence of human‐to‐human transmission of SARS‐CoV‐2. Comparison of SARS‐CoV‐2 strains isolated from these two patients with those from Wuhan showed high similarities. Nonsynonymous substitutions existed in the ORF1ab region of the viral sequence. Compared with mild clinical and virological manifestations in the younger patient, the elderly suffered from pneumonia, prolonged viral shedding, and residual lung damage.
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Affiliation(s)
- Lan T Phan
- Directorial Board, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thuong V Nguyen
- Directorial Board, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Loan K T Huynh
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Manh H Dao
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Tho A N Vo
- Department of Tropical Diseases, Cho Ray Hospital, Ho Chi Minh City, Vietnam
| | - Nhung H P Vu
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Hang T T Pham
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Hieu T Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thuc T Nguyen
- Directorial Board, Cho Ray Hospital, Ho Chi Minh City, Vietnam
| | - Hung Q Le
- Department of Tropical Diseases, Cho Ray Hospital, Ho Chi Minh City, Vietnam
| | - Thinh V Nguyen
- Department for Disease Control and Prevention, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quan H Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thao P Huynh
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Sang N Nguyen
- Department of Tropical Diseases, Cho Ray Hospital, Ho Chi Minh City, Vietnam
| | - Anh H Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Ngoc T Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thao N T Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Long T Nguyen
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quang C Luong
- Department for Disease Control and Prevention, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thang M Cao
- Microbiology and Immunology Department, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quang D Pham
- Planning Division and Training Center, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam
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22
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Wang C, Xiao L, Dai C, Nguyen AH, Littlepage LE, Schultz ZD, Li J. A Statistical Approach of Background Removal and Spectrum Identification for SERS Data. Sci Rep 2020; 10:1460. [PMID: 31996718 PMCID: PMC6989639 DOI: 10.1038/s41598-020-58061-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 01/10/2020] [Indexed: 11/24/2022] Open
Abstract
SERS (surface-enhanced Raman scattering) enhances the Raman signals, but the plasmonic effects are sensitive to the chemical environment and the coupling between nanoparticles, resulting in large and variable backgrounds, which make signal matching and analyte identification highly challenging. Removing background is essential, but existing methods either cannot fit the strong fluctuation of the SERS spectrum or do not consider the spectra’s shape change across time. Here we present a new statistical approach named SABARSI that overcomes these difficulties by combining information from multiple spectra. Further, after efficiently removing the background, we have developed the first automatic method, as a part of SABARSI, for detecting signals of molecules and matching signals corresponding to identical molecules. The superior efficiency and reproducibility of SABARSI are shown on two types of experimental datasets.
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Affiliation(s)
- Chuanqi Wang
- University of Notre Dame, Department of Applied and Computational Mathematics and Statistics, Notre Dame, IN, 46556, United States
| | - Lifu Xiao
- The Ohio State University, Department of Chemistry and Biochemistry, Columbus, OH, 43210, United States
| | - Chen Dai
- University of Notre Dame, Department of Chemistry and Biochemistry, Notre Dame, IN, 46556, United States.,Harper Cancer Research Institute, South Bend, IN, 46617, United States
| | - Anh H Nguyen
- University of Notre Dame, Department of Chemistry and Biochemistry, Notre Dame, IN, 46556, United States
| | - Laurie E Littlepage
- University of Notre Dame, Department of Chemistry and Biochemistry, Notre Dame, IN, 46556, United States.,Harper Cancer Research Institute, South Bend, IN, 46617, United States
| | - Zachary D Schultz
- The Ohio State University, Department of Chemistry and Biochemistry, Columbus, OH, 43210, United States.,University of Notre Dame, Department of Chemistry and Biochemistry, Notre Dame, IN, 46556, United States.,Harper Cancer Research Institute, South Bend, IN, 46617, United States
| | - Jun Li
- University of Notre Dame, Department of Applied and Computational Mathematics and Statistics, Notre Dame, IN, 46556, United States. .,Harper Cancer Research Institute, South Bend, IN, 46617, United States.
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23
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Nguyen AH, Marsh P, Schmiess-Heine L, Burke PJ, Lee A, Lee J, Cao H. Cardiac tissue engineering: state-of-the-art methods and outlook. J Biol Eng 2019; 13:57. [PMID: 31297148 PMCID: PMC6599291 DOI: 10.1186/s13036-019-0185-0] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 06/03/2019] [Indexed: 12/17/2022] Open
Abstract
The purpose of this review is to assess the state-of-the-art fabrication methods, advances in genome editing, and the use of machine learning to shape the prospective growth in cardiac tissue engineering. Those interdisciplinary emerging innovations would move forward basic research in this field and their clinical applications. The long-entrenched challenges in this field could be addressed by novel 3-dimensional (3D) scaffold substrates for cardiomyocyte (CM) growth and maturation. Stem cell-based therapy through genome editing techniques can repair gene mutation, control better maturation of CMs or even reveal its molecular clock. Finally, machine learning and precision control for improvements of the construct fabrication process and optimization in tissue-specific clonal selections with an outlook of cardiac tissue engineering are also presented.
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Affiliation(s)
- Anh H. Nguyen
- Electrical and Computer Engineering Department, University of Alberta, Edmonton, Alberta Canada
- Electrical Engineering and Computer Science Department, University of California Irvine, Irvine, CA USA
| | - Paul Marsh
- Electrical Engineering and Computer Science Department, University of California Irvine, Irvine, CA USA
| | - Lauren Schmiess-Heine
- Electrical Engineering and Computer Science Department, University of California Irvine, Irvine, CA USA
| | - Peter J. Burke
- Electrical Engineering and Computer Science Department, University of California Irvine, Irvine, CA USA
- Biomedical Engineering Department, University of California Irvine, Irvine, CA USA
- Chemical Engineering and Materials Science Department, University of California Irvine, Irvine, CA USA
| | - Abraham Lee
- Biomedical Engineering Department, University of California Irvine, Irvine, CA USA
- Mechanical and Aerospace Engineering Department, University of California Irvine, Irvine, CA USA
| | - Juhyun Lee
- Bioengineering Department, University of Texas at Arlington, Arlington, TX USA
| | - Hung Cao
- Electrical Engineering and Computer Science Department, University of California Irvine, Irvine, CA USA
- Biomedical Engineering Department, University of California Irvine, Irvine, CA USA
- Henry Samueli School of Engineering, University of California, Irvine, USA
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24
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Bui DD, Do NT, Pham LT, Nadol P, Nguyen VT, Dao VQ, Nguyen LH, Duong TK, Lai AK, Hoang CX, Nguyen AH, Suthar A, Tong AL, Do HM, Mesquita F, Lo YR, Lyss S, Nguyen LT, Kato M. Couples HIV testing and immediate antiretroviral therapy for serodiscordant HIV-positive partners: Translating evidence into programme in Vietnam. Int J STD AIDS 2019; 30:739-747. [PMID: 31046612 DOI: 10.1177/0956462418825405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Injection drug use and heterosexual transmission from male key populations to their female partners have been the dominant modes of HIV transmission in Vietnam. A demonstration project was conducted to offer immediate antiretroviral therapy (ART) (regardless of CD4 cell count) to HIV-seropositive partners in serodiscordant couples. During March–December 2013, couples HIV testing and counselling (HTC) and immediate ART were offered in two drug use-affected provinces. Of 256 couples receiving couples HTC, 146 (57%) were serodiscordant; 134 (92%) seropositive partners initiated ART irrespective of CD4 cell count. Of these, 86% were male; 57% reported ever using illicit drugs; median CD4 cell count before ART initiation was 374 cells/mm3. Consistent condom use was reported by 58, 70 and 71% among HIV-positive partners at months 0, 3 and 12. At 12 months after ART initiation, 119 (89%) HIV-positive partners were retained in care; 96 (95% of those tested) achieved viral suppression (<1000 copies/ml). Uptake of immediate ART and viral suppression among those initiating ART were high, paving the way for ART regardless of CD4 cell count as national policy in Vietnam.
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Affiliation(s)
- Duong D Bui
- 1 Viet Nam Authority of HIV/AIDS Control, Ministry of Health, Hanoi, Vietnam
| | - Nhan T Do
- 1 Viet Nam Authority of HIV/AIDS Control, Ministry of Health, Hanoi, Vietnam
| | - Linh Tt Pham
- 2 Hanoi University of Public Health, Department of Health Organization & Management, Hanoi, Viet Nam
| | - Patrick Nadol
- 3 Center for Disease Control and Prevention, Viet Nam Office, Hanoi, Vietnam
| | - Van Tt Nguyen
- 4 World Health Organization, Viet Nam Country Office, Hanoi, Vietnam
| | - Vinh Q Dao
- 3 Center for Disease Control and Prevention, Viet Nam Office, Hanoi, Vietnam
| | - Long H Nguyen
- 1 Viet Nam Authority of HIV/AIDS Control, Ministry of Health, Hanoi, Vietnam
| | - Tuan K Duong
- 2 Hanoi University of Public Health, Department of Health Organization & Management, Hanoi, Viet Nam
| | - Anh K Lai
- 5 Can Tho Provincial AIDS Center, Can Tho, Vietnam
| | - Chian X Hoang
- 6 Dien Bien Provincial AIDS Center, Dien Bien, Vietnam
| | - Anh H Nguyen
- 7 National Center for Adverse Drug Reaction and Drug Information, Hanoi, Vietnam
| | - Amitabh Suthar
- 4 World Health Organization, Viet Nam Country Office, Hanoi, Vietnam
| | - An L Tong
- 1 Viet Nam Authority of HIV/AIDS Control, Ministry of Health, Hanoi, Vietnam
| | - Hoa M Do
- 2 Hanoi University of Public Health, Department of Health Organization & Management, Hanoi, Viet Nam
| | - Fabio Mesquita
- 4 World Health Organization, Viet Nam Country Office, Hanoi, Vietnam
| | | | - Sheryl Lyss
- 3 Center for Disease Control and Prevention, Viet Nam Office, Hanoi, Vietnam
| | | | - Masaya Kato
- 4 World Health Organization, Viet Nam Country Office, Hanoi, Vietnam
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25
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Jin W, Lin D, Nguyen AH, Abdelrasoul GN, Chen J, Mar A, Qian F, Fang Q, Kovalchuk I, Wang Y, Chen J. Transfection of Difficult-to-Transfect Rat Primary Cortical Neurons with Magnetic Nanoparticles. J Biomed Nanotechnol 2019; 14:1654-1664. [PMID: 29958559 DOI: 10.1166/jbn.2018.2604] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The efficient cell transfection method is vital for various biomedical applications, such as the CRISPR-Cas9 technique. Current cell transfection methods, including lipofectamine, calcium phosphate co-precipitation, nucleofection, and viral infection are not equally efficient for various cells and have their disadvantages. In this study, a magnetic nanoparticle (MNP)-based method was introduced for delivering both FITC dye and a functional EGFP gene into easy-to-transfect HEK cells and difficult-to-transfect rat primary cortical neurons. The transfection efficacy could be controlled in both time-dependent and magnetic strength-dependent manner. This cell transfection method could have substantial potential for targeted drug delivery.
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26
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Nguyen AH, Deutsch JM, Xiao L, Schultz ZD. Online Liquid Chromatography-Sheath-Flow Surface Enhanced Raman Detection of Phosphorylated Carbohydrates. Anal Chem 2018; 90:11062-11069. [PMID: 30119606 DOI: 10.1021/acs.analchem.8b02907] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Online detection and quantification of three phosphorylated carbohydrate molecules: glucose 1-phosphate, glucose 6-phosphate, and fructose 6-phosphate was achieved by coupling sheath-flow surface enhanced Raman spectroscopy (SERS) to liquid chromatography. The presence of an alkanethiol (hexanethiol) self-assembled monolayer adsorbed to a silver SERS-active substrate helps retain and concentrate the analytes of interest at the SERS substrate to improve the detection sensitivity significantly. Mixtures of 2 μM of phosphorylated carbohydrates in pure water as well as in cell culture media were successfully separated by HPLC, with identification using the sheath-flow SERS detector. The quantification of each analyte was achieved using partial least-squares (PLS) regression analysis and acetonitrile in the mobile phases as an internal standard. These results illustrate the utility of sheath-flow SERS for molecular specific detection in complex biological samples appropriate for metabolomics and other applications.
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Affiliation(s)
- Anh H Nguyen
- Department of Chemistry and Biochemistry , University of Notre Dame , Notre Dame , Indiana 46556 , United States
| | - Jessica M Deutsch
- Department of Chemistry and Biochemistry , University of Notre Dame , Notre Dame , Indiana 46556 , United States
| | - Lifu Xiao
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Zachary D Schultz
- Department of Chemistry and Biochemistry , University of Notre Dame , Notre Dame , Indiana 46556 , United States.,Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
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27
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Shoute LCT, Anwar A, MacKay S, Abdelrasoul GN, Lin D, Yan Z, Nguyen AH, McDermott MT, Shah MA, Yang J, Chen J, Li XS. Immuno-impedimetric Biosensor for Onsite Monitoring of Ascospores and Forecasting of Sclerotinia Stem Rot of Canola. Sci Rep 2018; 8:12396. [PMID: 30120328 PMCID: PMC6098051 DOI: 10.1038/s41598-018-30167-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 07/01/2018] [Indexed: 12/01/2022] Open
Abstract
Sclerotinia stem rot, caused by the fungal pathogen Sclerotinia sclerotiorum, is a destructive disease of canola and many other broadleaf crops. The primary inoculum responsible for initiating Sclerotinia epidemics is airborne ascospores released from the apothecia of sclerotia. Timely detection of the presence of airborne ascospores can serve as an early-warning system for forecasting and management of the disease. A major challenge is to develop a portable and automated device which can be deployed onsite to detect and quantify the presence of minute quantities of ascospores in the air and serves as a unit in a network of systems for forecasting of the epidemic. In this communication, we present the development of an impedimetric non-Faradaic biosensor based on anti-S. sclerotiorum polyclonal antibodies as probes to selectively capture the ascospores and sense their binding by an impedance based interdigitated electrode which was found to directly and unambiguously correlate the number of ascospores on sensor surface with the impedance response.
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Affiliation(s)
- Lian C T Shoute
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Afreen Anwar
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
- Department of Botany, University of Kashmir, Srinagar, 190006, J&K, India
| | - Scott MacKay
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Gaser N Abdelrasoul
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Donghai Lin
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Zhimin Yan
- National Institute for Nanotechnology, National Research Council, Edmonton, AB, T6G 2M9, Canada
| | - Anh H Nguyen
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Mark T McDermott
- National Institute for Nanotechnology, National Research Council, Edmonton, AB, T6G 2M9, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB, T6G 2E9, Canada
| | - Manzoor A Shah
- Department of Botany, University of Kashmir, Srinagar, 190006, J&K, India
| | - Jian Yang
- InnoTech Alberta, Vegreville, AB, T9C 1T4, Canada
| | - Jie Chen
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
- National Institute for Nanotechnology, National Research Council, Edmonton, AB, T6G 2M9, Canada
| | - Xiujie S Li
- InnoTech Alberta, Vegreville, AB, T9C 1T4, Canada.
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28
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Nguyen AH, Abdelrasoul GN, Lin D, Maadi H, Tong J, Chen G, Wang R, Anwar A, Shoute L, Fang Q, Wang Z, Chen J. Polyethylenimine-coated iron oxide magnetic nanoparticles for high efficient gene delivery. Appl Nanosci 2018. [DOI: 10.1007/s13204-018-0775-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Nguyen AH, Peters EA, Schultz ZD. Bioanalytical applications of surface-enhanced Raman spectroscopy: de novo molecular identification. Rev Anal Chem 2017; 36:20160037. [PMID: 29398776 PMCID: PMC5793888 DOI: 10.1515/revac-2016-0037] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Surface enhanced Raman scattering (SERS) has become a powerful technique for trace analysis of biomolecules. The use of SERS-tags has evolved into clinical diagnostics, the enhancement of the intrinsic signal of biomolecules on SERS active materials shows tremendous promise for the analysis of biomolecules and potential biomedical assays. The detection of the de novo signal from a wide range of biomolecules has been reported to date. In this review, we examine different classes of biomolecules for the signals observed and experimental details that enable their detection. In particular, we survey nucleic acids, amino acids, peptides, proteins, metabolites, and pathogens. The signals observed show that the interaction of the biomolecule with the enhancing nanostructure has a significant influence on the observed spectrum. Additional experiments demonstrate that internal standards can correct for intensity fluctuations and provide quantitative analysis. Experimental methods that control the interaction at the surface are providing for reproducible SERS signals. Results suggest that combining advances in methodology with the development of libraries for SERS spectra may enable the characterization of biomolecules complementary to other existing methods.
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T. SN, Nguyen HM, Nguyen AH, Nguyen TD, Vo BT. ID: 1046 Antifungal prophylaxis in hematopoietic stem cell transplantation recipients: drug use evaluation at Vietnam National Institute of Hemotology and Blood transfusion. Biomed Res Ther 2017. [DOI: 10.15419/bmrat.v4is.322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
*For correspondence:
tungson94@gmail.com
Competing interests: The authors declare that no competing interests exist.
Received: 2017-07-13
Accepted: 2017-08-04
Published: 2017-09-05
Copyright The Author(s) 2017. This article is published with open access by BioMedPress (BMP).
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
Background: Hematopoietic stem cell transplantation (HSCT) recipients were known to be in high risk of fungal infection. However, not all HSCT patients need antifungal prophylaxis. The aim of this study was to describe the characteristics of the use of antifungal prophylaxis in hematopoietic stem cell transplantation recipients and to evaluate the appropriateness of use.
Methods: In this observational prospective study, adult hematopoietic stem cell transplantation recipients without using antifungal treatment were recruited from start of stem cell transfusion in Vietnam National Institute of Hematology and Blood Transfusion (from April to December 2016) to end of antifungal prophylaxis or start of antifungal treatment. Appropriateness was defined based on National Comprehensive Cancer Network (NCCN) guidelines. Clinically significant Drug-drug interactions related to antifungals were defined based on Hansten and Horn’s Drug interaction and management 2013.
Results: 38 patients (mean age: 35.7 ± 12.0; 57.9% male) were admitted, included 21 autologous and 17 allogeneic HSCT recipients. After HSCT, 3 deaths, 1 to ICU, 1 IFI. Azoles prophylaxis was given to 100% of patients with median 17.5 days (13 - 47.5). Fluconazole was the most used antifungal agents, in 94.7% of patients and 74.5% of episodes. 10 patients had been changed antifungal agents. Indication was appropriate in 44.7%, 0% in autologous and 100% in allogeneic group. In patients with appropriate indication, choice of antifungal agents was 100% appropriate. 100% of patients used inappropriate dosage, mostly lower than recommeded dosage with azoles. 12.7% had appropriate prophylactic time. Potential drug-drug interactions were identified in 92.1% of patients. Most frequent interactions involved azoles-diazepam (80.4% of episodes) and azoles-immunosuppressive drugs (49% of episodes).
Conclusion: Our evaluation revealed a high proportion of inappropriate of antifungal prophylaxis. An antifungal stewardship programme is needed to strengthen rational use of antifungal in this specific circumstance.
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Nguyen AH, Shin Y, Sim SJ. Corrigendum to “Development of SERS substrate using phage-based magnetic template for triplex assay in sepsis diagnosis” [Biosens. Bioelectron. 85 (2016) 522–528]. Biosens Bioelectron 2017; 95:189. [DOI: 10.1016/j.bios.2017.04.019] [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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32
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Petroff II JT, Nguyen AH, Porter AJ, Morales FD, Kennedy MP, Weinstein D, Nazer HE, McCulla RD. Enhanced photocatalytic dehalogenation of aryl halides by combined poly-p-phenylene (PPP) and TiO2 photocatalysts. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.11.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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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33
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Ngo HT, Nguyen TTN, Nguyen QM, Tran AV, Do HTV, Nguyen AH, Phan TN, Nguyen ATV. Screening of pigmented Bacillus aquimaris SH6 from the intestinal tracts of shrimp to develop a novel feed supplement for shrimp. J Appl Microbiol 2016; 121:1357-1372. [PMID: 27548588 DOI: 10.1111/jam.13274] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 07/24/2016] [Accepted: 08/16/2016] [Indexed: 01/22/2023]
Abstract
AIMS To develop a novel feed supplement for shrimp using pigmented spore-forming bacterial strains isolated from their gastrointestinal tracts. METHODS AND RESULTS Eight pigmented Bacillus strains were selected from the isolates based on high production of heat-stable spores, typical UV-Vis spectra of produced carotenoids (400-550 nm), and free radical scavenging activity of their extracts. Of the eight strains, the red-orange pigmented Bacillus aquimaris SH6 was selected because it showed the highest abundance in shrimp guts (70% population). Whiteleg shrimp (n = 30 per group) fed with SH6 spores, at >3 × 106 CFU g-1 pellet for 4 weeks had redder colour (score of 21-23 vs 20-22), 2·7-fold higher astaxanthin level (0·69 vs 0·25 μg g-1 shrimp), 34% higher weight gain (7·18 vs 5·32 g shrimp-1 ), and 85% higher phenoloxidase activity (OD490 = 0·265 vs 0·143) than shrimp in the control group. CONCLUSIONS The result supports the potential use of B. aquimaris SH6 as a feed supplement for promoting the colourization and weight gain, and for enhancing innate immunity of whiteleg shrimp. SIGNIFICANCE AND IMPACT OF THE STUDY This study demonstrates that carotenoids produced by B. aquimaris SH6 can be successfully absorbed and converted to astaxanthin in whiteleg shrimp.
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Affiliation(s)
- H T Ngo
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam
| | - T T N Nguyen
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam
| | - Q M Nguyen
- High School for Gifted Students, VNU University of Science, Hanoi, Vietnam
| | - A V Tran
- High School for Gifted Students, VNU University of Science, Hanoi, Vietnam
| | - H T V Do
- Faculty of Chemistry, VNU University of Science, Hanoi, Vietnam
| | - A H Nguyen
- ANABIO Research & Development JSC, Hanoi, Vietnam
| | - T-N Phan
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam
| | - A T V Nguyen
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam.
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Abstract
Alloplastic facial implants have a wide range of uses to achieve the appropriate facial contour. A variety of materials such as metals, polymers, ceramics and synthetic injectable fillers are available to the reconstructive and aesthetic surgeon. Besides choosing the right surgical technique and the adequate material, the surgeon must be prepared to treat complications. Infection is an uncommon but serious complication that can cause displeasing consequences for the patient. There are few references in literature regarding treatment and management of facial implant-related infections. This study aims to discuss the role of biofilm in predisposing alloplastic materials to infection, to provide a review of literature, to describe our own institutional experience, and to define a patient care pathway for facial implant-associated infection.
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Affiliation(s)
- Kriti Mohan
- Division of Plastic and Reconstructive Surgery, Baylor College of Medicine, Houston, Texas
| | - Joshua A Cox
- Division of Plastic and Reconstructive Surgery, Baylor College of Medicine, Houston, Texas
| | - Ryan M Dickey
- Division of Plastic and Reconstructive Surgery, Baylor College of Medicine, Houston, Texas
| | - Paula Gravina
- Division of Plastic and Reconstructive Surgery, Baylor College of Medicine, Houston, Texas
| | - Anthony Echo
- The Institute for Reconstructive Surgery, Houston Texas
| | - Shayan A Izaddoost
- Division of Plastic and Reconstructive Surgery, Baylor College of Medicine, Houston, Texas
| | - Anh H Nguyen
- Division of Plastic and Reconstructive Surgery, Baylor College of Medicine, Houston, Texas
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35
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Abstract
RNA splicing plays important roles in transcriptome and proteome diversity. Herein, we describe the use of a nanoplasmonic system that unveils RNA folding and assembly during pre-mRNA splicing wherein the quantification of mRNA splice variants is not taken into account. With a couple of SERS-probes and plasmonic probes binding at the boundary sites of exon-2/intron-2 and intron-2/exon-3 of the pre-mature RNA of the β-globin gene, the splicing process brings the probes into the plasmonic bands. For plasmonic probes, a plasmon shift increase of ∼29 nm, corresponding to intron removal and exon-2 and exon-3 connection to form the mRNA molecule, is measured by plasmonic coupling. The increased scattering intensity and surface-enhanced Raman scattering (SERS) fingerprinting reveal the clear dynamics of pre-mRNA splicing. Moreover, a time-resolved experiment of individual RNA molecules exhibited a successful splicing and an inhibited splicing event by 33 μM biflavonoid isoginkgetin, a general inhibitor of RNA splicing. The results suggest that the RNA splicing is successfully monitored with the nanoplasmonic system. Thus, this platform can be useful for studying RNA nanotechnology, biomolecular folding, alternative splicing, and maturation of microRNA.
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Affiliation(s)
- Anh H Nguyen
- Department of Chemical and Biological Engineering, Korea University, Seoul 136-713, Korea.
| | - Jong Uk Lee
- Department of Chemical and Biological Engineering, Korea University, Seoul 136-713, Korea.
| | - Sang Jun Sim
- Department of Chemical and Biological Engineering, Korea University, Seoul 136-713, Korea. and Green School, Korea University, Seoul 136-713, Korea
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36
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Song S, Nguyen AH, Lee JU, Cha M, Sim SJ. Tracking of STAT3 signaling for anticancer drug-discovery based on localized surface plasmon resonance. Analyst 2016; 141:2493-501. [DOI: 10.1039/c5an02397a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The label-free sensor, based on the LSPR shift response by tracking of the STAT3 signaling pathways, is an ultrasensitive for drug screening of anticancer therapy.
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Affiliation(s)
- Sojin Song
- Department of Chemical and Biological Engineering
- Korea University
- Seoul 136-713
- South Korea
| | - Anh H. Nguyen
- Department of Chemical and Biological Engineering
- Korea University
- Seoul 136-713
- South Korea
| | - Jong Uk Lee
- Department of Chemical and Biological Engineering
- Korea University
- Seoul 136-713
- South Korea
| | - Misun Cha
- Department of Chemical and Biological Engineering
- Korea University
- Seoul 136-713
- South Korea
| | - Sang Jun Sim
- Department of Chemical and Biological Engineering
- Korea University
- Seoul 136-713
- South Korea
- Green School
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Kim YK, Kania K, Nguyen AH. Rhinoplasty with Cartilage and Alloplastic Materials, Nasal SMAS Management in Asian Rhinoplasty, Contracture Classification, and Secondary Rhinoplasty with Contracture. Semin Plast Surg 2015; 29:255-61. [PMID: 26648805 DOI: 10.1055/s-0035-1564819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Rhinoplasty for Asians is quite different from that of Westerners. Most Asians desire a raised nasal bridge with a projected nasal tip, similar to that of Westerners. Nevertheless, most Asian nasal bones, and upper and lower lateral cartilages are inadequately developed. This largely necessitates the use of a nasal alloplastic material such as a silicone implant, most frequently utilized in nasal cosmetic surgery for Asians. Shaping of the silicone implant is rather easy and its removal is also simple, in the case of a complication or undesired result. The disadvantage of a nasal silicone implant, like that of silicone implants of the breast, is the fibrous capsular formation, which may lead to capsular contracture. The frequently employed types of nasal silicone implant include (1) the boat type in which the silicone implant descends down to the nasal tip, (2) the L-shape in which the silicone implant further extends to the anterior nasal spine (ANS) after passing the tip, and (3) the three-quarter type for which the silicone implant extends down to the upper lateral cartilage. In conjunction with the silicone implant, the cartilages of the ear and the nasal septum are commonly used to create or lengthen tip projection. Asians generally have cartilage with inadequate anatomical development. Instead, they often have an anatomically thick fibrous fatty layer including underdeveloped superficial musculoaponeurotic system (SMAS). Patients with a thick fibrous tissue layer have a bulbous tip. This nasal tip is the area where severe capsular contracture occurs after insertion of a silicone implant. It is imperative that the surgeon properly understands the nasal anatomical characteristics of Asians, and selects an appropriate implant together with a suitable donor cartilage to attain a safe and aesthetically pleasing nose. The same principle should apply to reoperation cases; the fibrofatty layer of SMAS along with the capsular contracture must be removed or released to gain a sufficient soft tissue volume. This provides further stability to the cartilage framework.
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Affiliation(s)
- Yong Kyu Kim
- Apgujung YK Plastic Surgery Clinic, Seoul, Korea
| | | | - Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
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Affiliation(s)
- Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
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Suhk J, Park J, Nguyen AH. Nasal Analysis and Anatomy: Anthropometric Proportional Assessment in Asians-Aesthetic Balance from Forehead to Chin, Part I. Semin Plast Surg 2015; 29:219-25. [PMID: 26648801 DOI: 10.1055/s-0035-1564817] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Asian rhinoplasty patients can be analyzed by the nose's component structures and their relationship to one another. A comprehensive understanding of the underlying anatomical structure including bone, cartilage, and soft tissue contributes to better preoperative planning. To achieve an optimal postoperative result, a thorough preoperative analysis utilizing standardized measurements is essential. Knowledge of the Asian nose facilitates the use of an algorithmic approach to Asian rhinoplasty that increases surgical predictability.
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Affiliation(s)
- JeongHoon Suhk
- Cheongdam i Plastic Surgery Clinic, Uijeongbu-si, Gyeonggi-do, Korea
| | - JinSoo Park
- Cheongdam i Plastic Surgery Clinic, Uijeongbu-si, Gyeonggi-do, Korea
| | - Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
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Park J, Suhk J, Nguyen AH. Nasal Analysis and Anatomy: Anthropometric Proportional Assessment in Asians-Aesthetic Balance from Forehead to Chin, Part II. Semin Plast Surg 2015; 29:226-31. [PMID: 26648802 DOI: 10.1055/s-0035-1564818] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Caucasians usually have reduction or correction rhinoplasty; however, Asian nasal surgery is mainly for augmentation rhinoplasty. Therefore, an Asian rhinoplasty should start with a precise understanding of ethnic anatomical differences. The authors summarize the anatomical characteristics of Asians to ensure the best results.
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Affiliation(s)
- JinSoo Park
- Cheongdam i Plastic Surgery Clinic, Uijeongbu-si, Gyeonggi-do, Korea
| | - JeongHoon Suhk
- Cheongdam i Plastic Surgery Clinic, Uijeongbu-si, Gyeonggi-do, Korea
| | - Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
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Abstract
The field of plastic surgery originally developed out of the necessity to reconstruct the human body after the destruction of war. However, injured soldiers were not the only people who desired a change in appearance. After World War II, many people in Asian countries sought to attain a more Western look through surgery. Along with eyes, the nose was the main focus for these cosmetic procedures. In this article, the authors examine the evolution of Asian rhinoplasty from its original description in 1964 to the present. The characteristic anatomical differences between the Western and Asian nose are identified in relation to the technical challenges for rhinoplasty surgeons. Then the benefits and risks of the two major surgical approaches, autograft versus alloplast, are detailed. Finally, the coevolution of techniques and implant usage is traced from a dorsum-only implant, to an L-shaped implant, a cartilaginous cap graft with a one-piece rhinoplasty, an I-shaped implant, and a two-piece augmentation rhinoplasty. Outlining these changes demonstrates the advancement of the field of plastic surgery and the growing expectations of the patient. These advancements have provided the tools necessary to better align a patient's aesthetic goals and their unique anatomical presentation with a specific surgical approach.
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Affiliation(s)
- Abdulla Fakhro
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
| | - Ryan D Wagner
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
| | - Yong Kyu Kim
- Apgujung YK Plastic Surgery Clinic, Seoul, Korea
| | - Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
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Abstract
Augmentation rhinoplasty among Asian patients is often performed to improve the height of the nasal dorsum. As the use of autogenous tissues poses certain limitations, alloplastic materials are a viable alternative with a long history of use in Asia. The superiority of one implant prosthesis over another for augmentation rhinoplasty is a matter of debate, with each material representing varying strengths and weaknesses, indications for use, and precautions to consider in nasal implant placement. An implant prosthesis should be used on a case-by-case basis. Augmentation rhinoplasty requires the consideration of specific anatomical preoperative factors, including the external nose, nasal length, nasofrontal angle, humps, and facial proportions. It is equally important to consider several operative guidelines to appropriately shape implants to minimize the occurrence of adverse effects and postoperative complications. The most common postoperative complications include infection, nasal height change, movement of implant prosthesis, and silicone implant protrusion. In addition, the surgeon should consider the current standards of Asian beauty aesthetics to better understand the patient's desired outcome.
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Affiliation(s)
- Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
| | - Erica L Bartlett
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
| | - Katarzyna Kania
- Division of Plastic Surgery, Indiana University, Indianapolis, Indiana
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Abstract
Among the various types of alar deformations in Asians, alar retraction not only has the highest occurrence rate, but is also very complicated to treat because the ala is supported only by cartilage and its soft tissue envelope cannot be easily stretched. As patients' knowledge of aesthetic procedures is becoming more extensive due to increased information dissemination through various media, doctors must give more accurate, logical explanations of the procedures to be performed and their anticipated results, with an emphasis on relevant anatomical features, accurate diagnoses, detailed classifications, and various appropriate methods of surgery.
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Affiliation(s)
| | | | | | | | - Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
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Abstract
A rhinoplasty in Asians differs from a rhinoplasty performed in patients of other ethnicities. Surgeons should understand the concept of Asian beauty, the nasal anatomy of Asians, and common problems encountered while operating on the Asian nose. With this understanding, surgeons can set appropriate goals, choose proper operative procedures, and provide an outcome that satisfies patients. In this article the authors define the concept of an Asian rhinoplasty-a paradigm shift from the traditional on-top augmentation rhinoplasty to a structurally integrated augmentation rhinoplasty-and provide a step-by-step procedure for the use of Adobe Photoshop as a preoperative program to simulate the expected surgical outcome for patients and to develop a preoperative plan for surgeons.
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Affiliation(s)
| | - Anh H Nguyen
- Department of Surgery, Baylor College of Medicine, Houston, Texas
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Lee JU, Nguyen AH, Sim S. A nanoplasmonic biosensor for label-free multiplex detection of cancer biomarkers. Biosens Bioelectron 2015; 74:341-6. [DOI: 10.1016/j.bios.2015.06.059] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 06/22/2015] [Accepted: 06/25/2015] [Indexed: 12/11/2022]
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Nguyen AH, Bartlett EL, Kania K, Bae SM. Erratum: Simple Implant Augmentation Rhinoplasty. Semin Plast Surg 2015; 29:e1. [PMID: 31656451 DOI: 10.1055/s-0039-3399501] [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: 10/25/2022]
Abstract
[This corrects the article DOI: 10.1055/s-0035-1566112.].
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Affiliation(s)
- Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
| | - Erica L Bartlett
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
| | - Katarzyna Kania
- Division of Plastic Surgery, Indiana University, Indianapolis, Indiana
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Nguyen AH, Wang Y, White DE, Platt MO, McDevitt TC. MMP-mediated mesenchymal morphogenesis of pluripotent stem cell aggregates stimulated by gelatin methacrylate microparticle incorporation. Biomaterials 2015; 76:66-75. [PMID: 26519649 DOI: 10.1016/j.biomaterials.2015.10.043] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [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: 04/29/2015] [Revised: 10/15/2015] [Accepted: 10/18/2015] [Indexed: 01/03/2023]
Abstract
Matrix metalloproteinases (MMPs) remodel the extracellular matrix (ECM) to facilitate epithelial-to-mesenchymal transitions (EMTs) and promote cell specification during embryonic development. In this study, we hypothesized that introducing degradable ECM-based biomaterials to pluripotent stem cell (PSC) aggregates would modulate endogenous proteolytic activity and consequently enhance the differentiation and morphogenesis within 3D PSC aggregates. Gelatin methacrylate (GMA) microparticles (MPs) of low (∼20%) or high (∼90%) cross-linking densities were incorporated into mouse embryonic stem cell (ESC) aggregates, and the effects on MMP activity and cell differentiation were examined with or without MMP inhibition. ESC aggregates containing GMA MPs expressed significantly higher levels of total MMP and MMP-2 than aggregates without MPs. GMA MP incorporation increased expression of EMT markers and enhanced mesenchymal morphogenesis of PSC aggregates. MMP inhibition completely abrogated these effects, and GMA MP-induced MMP activation within ESC aggregates was partially reduced by pSMAD 1/5/8 inhibition. These results suggest that GMA particles activate MMPs by protease-substrate interactions to promote EMT and mesenchymal morphogenesis of ESC aggregates in an MMP-dependent manner. We speculate that controlling protease activity via the introduction of ECM-based materials may offer a novel route to engineer the ECM microenvironment to modulate stem cell differentiation.
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Affiliation(s)
- Anh H Nguyen
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Yun Wang
- The Gladstone Institute for Cardiovascular Disease, San Francisco, CA, USA
| | - Douglas E White
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Manu O Platt
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA; The Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Todd C McDevitt
- The Gladstone Institute for Cardiovascular Disease, San Francisco, CA, USA; Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA.
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Abstract
In contrast with Caucasian blepharoplasty, which is usually done for rejuvenation purposes, eyelid surgery for Asians is mainly done for cosmetic reasons. Here the authors present preoperative evaluation methods of Asian eyelids to overcome anatomical variations and determine the right aesthetic options. Proper selection of the most suitable operative methods guarantees optimal surgical results.
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Affiliation(s)
- Jeong Hoon Suhk
- Cheongdam i Plastic Surgery Clinic, Uijeongbu-si, Gyeonggi-do, Korea
| | - Kidakorn Kiranantawat
- Division of Plastic and Maxillofacial Surgery, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
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Nguyen AH. Cosmetic Asian Blepharoplasty and Periorbital Surgery. Semin Plast Surg 2015; 29:133-4. [PMID: 26306079 DOI: 10.1055/s-0035-1556846] [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] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine, Houston, Texas
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50
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Abstract
Many East Asians experience lower eyelid bulging and discoloration, and this is seen even in young individuals. The condition is caused by an undergrowth of the maxilla and not by aging. In this condition, the orbit appears small and the infraorbital rim is hypoplastic. This inevitably causes a depressed, tired, and sad appearance. Here, the authors present techniques of volume augmentation in the lower eyelid and cheek areas to rejuvenate the midface in Asians.
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Affiliation(s)
| | - Anh H Nguyen
- Division of Plastic Surgery, Baylor College of Medicine Houston, Texas
| | - Yong Kyu Kim
- Apgujeong YK Plastic Surgery Clinic, Seoul, Korea
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