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Kopel H, Bogdanov A, Winer-Jones JP, Adams C, Winer IH, Bonafede M, Nguyen VH, Mansi JA. Comparison of COVID-19 and Influenza-Related Outcomes in the United States during Fall-Winter 2022-2023: A Cross-Sectional Retrospective Study. Diseases 2024; 12:16. [PMID: 38248367 PMCID: PMC10814040 DOI: 10.3390/diseases12010016] [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: 11/20/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
Influenza and COVID-19 contribute significantly to the infectious disease burden during the respiratory season, but their relative burden remains unknown. This study characterizes the frequency and severity of medically attended COVID-19 and influenza during the peak of the 2022-2023 influenza season in the pediatric, adult, and older adult populations and characterizes the prevalence of underlying conditions among patients hospitalized with COVID-19. This cross-sectional analysis included individuals in the Veradigm EHR Database linked to Komodo claims data with a medical encounter between 1 October 2022 and 31 March 2023 (study period). Patients with medical encounters were identified with a diagnosis of COVID-19 or influenza during the study period and stratified based on the highest level of care received with that diagnosis. Among 23,526,196 individuals, there were more COVID-19-related medical encounters than influenza-related encounters, overall and by outcome. Hospitalizations with COVID-19 were more common than hospitalizations with influenza overall (incidence ratio = 4.6) and in all age groups. Nearly all adults hospitalized with COVID-19 had at least one underlying medical condition, but 37.1% of 0-5-year-olds and 25.0% of 6-17-year-olds had no underlying medical conditions. COVID-19 was associated greater burden than influenza during the peak of the 2022-2023 influenza season.
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Pelton SI, Mould-Quevedo JF, Nguyen VH. Modelling the population-level benefits and cost-effectiveness of cell-based quadrivalent influenza vaccine for children and adolescents aged 6 months to 17 years in the US. Expert Rev Vaccines 2024; 23:82-87. [PMID: 38093415 DOI: 10.1080/14760584.2023.2295014] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 12/11/2023] [Indexed: 12/18/2023]
Abstract
BACKGROUND Cell-based quadrivalent influenza vaccines (QIVc) can increase effectiveness against seasonal influenza by avoiding mismatch from egg adaption of vaccine viruses. This study evaluates the population-level cost-effectiveness and impacts on health outcomes of QIVc versus an egg-based vaccine (QIVe) in children aged 6 months to 17 years in the US. RESEARCH DESIGN AND METHODS A dynamic age-structured susceptible-exposed-infected-recovered model was used to simulate influenza transmission in low and high incidence seasons for two scenarios: 1. QIVe for 6 months-17 year-olds, QIVc for 18-64 year-olds, and adjuvanted QIV (aQIV) for ≥ 65 year-olds, and 2. QIVc for 6 months-64 year-olds, and aQIV for ≥ 65 year-olds. Probabilistic sensitivity analysis was performed to account for uncertainty in parameter estimates. Cost-effectiveness was evaluated as incremental cost-effectiveness ratios (ICERs). RESULTS Extension of QIVc to children resulted in 3-4% reductions in cases (1,656,271), hospitalizations (16,688), and deaths (2,126) at a population level in a high incidence season, and 65% reductions (cases: 2,856,384; hospitalizations: 31667; deaths: 4,163) in a low incidence season. Use of QIVc would be cost-saving, with ICERs of -$16,427/QALY and -$8,100/QALY from a payer perspective and -$22,669/QALY and -$15,015/QALY from a societal perspective, for low and high incidence seasons respectively. Cost savings were estimated at approximately $468 million and $1.366 billion for high and low incidence seasons, respectively. CONCLUSION Use of QIVc instead of QIVe in children > 6 months of age in the US would reduce the disease burden and be cost-saving from both a payer and societal perspective.
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Affiliation(s)
- Stephen I Pelton
- Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, USA
| | | | - Van Hung Nguyen
- Global Health Economics and Epidemiology, VHN Consulting Inc, Montreal, Canada
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Nguyen VH, Ashraf M, Mould-Quevedo JF. Estimating the impact of influenza vaccination of low-risk 50-64-year-olds on acute and ICU hospital bed usage in an influenza season under endemic COVID-19 in the UK. Hum Vaccin Immunother 2023; 19:2187592. [PMID: 36912725 PMCID: PMC10054290 DOI: 10.1080/21645515.2023.2187592] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023] Open
Abstract
Co-circulation of influenza and SARS-CoV-2 has the potential to place considerable strain on health-care services. We estimate the cost-effectiveness and health-care resource utilization impacts of influenza vaccination of low-risk 50-64-y-olds in the United Kingdom (UK) against a background SARS-CoV-2 circulation. A dynamic susceptible-exposed-infected-recovered model was used to simulate influenza transmission, with varying rates of vaccine coverage in the low-risk 50-64 y age-group. Four scenarios were evaluated: no vaccination (baseline), 40%, 50%, and 60% coverage. For the 50% and 60% coverage, this rate was also applied to high-risk 50-64-y-olds, whereas 48.6% was used for the baseline and 40% coverage scenarios. Cost-effectiveness was estimated in terms of humanistic outcomes and incremental cost-effectiveness ratio (ICER), with discounting applied at 3%. Overall, influenza vaccination of 50-64-y-olds resulted in reductions in GP visits, hospitalizations, and deaths, with a reduction in influenza-related mortality of 34%, 41%, and 52% for 40%, 50%, and 60% coverage, respectively. All four scenarios resulted in acute and intensive care unit (ICU) bed occupancy levels above available capacity, although vaccination of low-risk 50-64-y-olds resulted in a 35-54% and 16-25% decrease in excess acute and ICU bed requirements, respectively. Vaccination of this group against influenza was highly cost-effective from the payer perspective, with ICERs of £2,200-£2,343/quality-adjusted life year across the coverage rates evaluated. In conclusion, in the UK, vaccination of low-risk 50-64-y-olds against influenza is cost-effective and can aid in alleviating bed shortages in a situation where influenza and SARS-CoV-2 are co-circulating.
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Kopel H, Nguyen VH, Boileau C, Bogdanov A, Winer I, Ducruet T, Zeng N, Bonafede M, Esposito DB, Martin D, Rosen A, Van de Velde N, Vermund SH, Gravenstein S, Mansi JA. Comparative Effectiveness of Bivalent (Original/Omicron BA.4/BA.5) COVID-19 Vaccines in Adults. Vaccines (Basel) 2023; 11:1711. [PMID: 38006043 PMCID: PMC10675676 DOI: 10.3390/vaccines11111711] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 10/03/2023] [Revised: 10/26/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
The emergence of Omicron variants coincided with declining vaccine-induced protection against SARS-CoV-2. Two bivalent mRNA vaccines, mRNA-1273.222 (Moderna) and BNT162b2 Bivalent (Pfizer-BioNTech), were developed to provide greater protection against the predominate circulating variants by including mRNA that encodes both the ancestral (original) strain and BA.4/BA.5. We estimated their relative vaccine effectiveness (rVE) in preventing COVID-19-related outcomes in the US using a nationwide dataset linking primary care electronic health records and pharmacy/medical claims data. The study population (aged ≥18 years) received either vaccine between 31 August 2022 and 28 February 2023. We used propensity score weighting to adjust for baseline differences between groups. We estimated the rVE against COVID-19-related hospitalizations (primary outcome) and outpatient visits (secondary) for 1,034,538 mRNA-1273.222 and 1,670,666 BNT162b2 Bivalent vaccine recipients, with an adjusted rVE of 9.8% (95% confidence interval: 2.6-16.4%) and 5.1% (95% CI: 3.2-6.9%), respectively, for mRNA-1273.222 versus BNT162b2 Bivalent. The incremental relative effectiveness was greater among adults ≥ 65; the rVE against COVID-19-related hospitalizations and outpatient visits in these patients was 13.5% (95% CI: 5.5-20.8%) and 10.7% (8.2-13.1%), respectively. Overall, we found greater effectiveness of mRNA-1273.222 compared with the BNT162b2 Bivalent vaccine in preventing COVID-19-related hospitalizations and outpatient visits, with increased benefits in older adults.
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Affiliation(s)
- Hagit Kopel
- Moderna, Inc., Cambridge, MA 02139, USA (D.B.E.); (A.R.)
| | | | | | | | | | | | - Ni Zeng
- Veradigm, Chicago, IL 60654, USA
| | | | | | - David Martin
- Moderna, Inc., Cambridge, MA 02139, USA (D.B.E.); (A.R.)
| | - Andrew Rosen
- Moderna, Inc., Cambridge, MA 02139, USA (D.B.E.); (A.R.)
| | | | - Sten H. Vermund
- Yale School of Public Health, Yale University, New Haven, CT 06510, USA;
| | - Stefan Gravenstein
- Alpert Medical School and School of Public Health, Brown University, Providence, RI 02903, USA
| | - James A. Mansi
- Moderna, Inc., Cambridge, MA 02139, USA (D.B.E.); (A.R.)
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Mould-Quevedo JF, Pelton SI, Nguyen VH. Vaccine Effectiveness of Cell-Based Quadrivalent Influenza Vaccine in Children: A Narrative Review. Vaccines (Basel) 2023; 11:1594. [PMID: 37896996 PMCID: PMC10610859 DOI: 10.3390/vaccines11101594] [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: 09/18/2023] [Revised: 10/05/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
Cell-based manufacturing of seasonal influenza vaccines eliminates the risk of egg-adaptation of candidate vaccine viruses, potentially increasing vaccine effectiveness (VE). We present an overview of published data reporting the VE and cost-effectiveness of a cell-based quadrivalent influenza vaccine (QIVc) in preventing influenza-related outcomes in the pediatric population. We identified 16 clinical studies that included data on the VE of a QIVc or the relative VE (rVE) of a QIVc versus an egg-based QIV (QIVe) in children and/or adolescents, 11 of which presented estimates specifically for the pediatric age group. Of these, two studies reported rVE against hospitalizations. Point estimates of rVE varied from 2.1% to 33.0%, with studies reporting significant benefits of using a QIVc against influenza-related, pneumonia, asthma, and all-cause hospitalization. Four studies reported rVE against influenza-related medical encounters, with point estimates against non-strain specific encounters ranging from 3.9% to 18.8% across seasons. One study evaluated rVE against any influenza, with variable results by strain. The other four studies presented VE data against laboratory-confirmed influenza. Three health economics studies focusing on a pediatric population also found the use of QIVc to be cost-effective or cost-saving. Overall, using a QIVc is effective in pediatric patients, with evidence of incremental benefits over using a QIVe in preventing hospitalizations and influenza-related medical encounters in nearly all published studies.
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Affiliation(s)
| | - Stephen I. Pelton
- Chobanian and Avedesian School of Medicine, Boston University, Boston, MA 02118, USA;
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Chung Tran N, Lien NTK, Ta TD, Nguyen VH, Tran HT, Van Tung N, Xuan NT, Huy Hoang N, Tran VK. Novel mutations in the SGCA gene in unrelated Vietnamese patients with limb-girdle muscular dystrophies disease. Front Genet 2023; 14:1248338. [PMID: 37900180 PMCID: PMC10611451 DOI: 10.3389/fgene.2023.1248338] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 09/18/2023] [Indexed: 10/31/2023] Open
Abstract
Background: Limb-girdle muscular dystrophy (LGMD) is a group of inherited neuromuscular disorders characterized by atrophy and weakness in the shoulders and hips. Over 30 subtypes have been described in five dominant (LGMD type 1 or LGMDD) and 27 recessive (LGMD type 2 or LGMDR). Each subtype involves a mutation in a single gene and has high heterogeneity in age of onset, expression, progression, and prognosis. In addition, the lack of understanding of the disease and the vague, nonspecific symptoms of LGMD subtypes make diagnosis difficult. Even as next-generation sequencing (NGS) genetic testing has become commonplace, some patients remain undiagnosed for many years. Methods: To identify LGMD-associated mutations, Targeted sequencing was performed in the patients and Sanger sequencing was performed in patients and family members. The in silico analysis tools such as Fathmm, M-CAP, Mutation Taster, PolyPhen 2, PROVEAN, REVEL, SIFT, MaxEntScan, Spliceailookup, Human Splicing Finder, NetGene2, and Fruitfly were used to predict the influence of the novel mutations. The pathogenicity of the mutation was interpreted according to the ACMG guidelines. Results: In this study, six patients from four different Vietnamese families were collected for genetic analysis at The Center for Gene and Protein Research and The Department of Molecular Pathology Faculty of Medical Technology, Hanoi Medical University, Hanoi, Vietnam. Based on clinical symptoms and serum creatine kinase (CK) levels, the patients were diagnosed with limb-girdle muscular dystrophies. Five mutations, including four (c.229C>T, p.Arg77Cys; exon one to three deletion; c.983 + 5G>C; and c.257_258insTGGCT, p.Phe88Leufs*125) in the SGCA gene and one (c.946-4_946-1delACAG) in the CAPN3 gene, were detected in six LGMD patients from four unrelated Vietnamese families. Two homozygous mutations (c.983 + 5G>C and c.257_258insTGGCT) in the SGCA gene were novel. These mutations were identified as the cause of the disease in the patients. Conclusion: Our results contribute to the general understanding of the etiology of the disease and provide the basis for definitive diagnosis and support genetic counseling and prenatal screening.
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Affiliation(s)
- Nam Chung Tran
- Center for Gene and Protein Research, Department of Molecular Pathology, Faculty of Medical Technology, Hanoi Medical University, Hanoi, Vietnam
- Hanoi Medical University, Hanoi, Vietnam
| | - Nguyen Thi Kim Lien
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Thanh Dat Ta
- Center for Gene and Protein Research, Department of Molecular Pathology, Faculty of Medical Technology, Hanoi Medical University, Hanoi, Vietnam
| | | | | | - Nguyen Van Tung
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Nguyen Thi Xuan
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Nguyen Huy Hoang
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Van Khanh Tran
- Center for Gene and Protein Research, Department of Molecular Pathology, Faculty of Medical Technology, Hanoi Medical University, Hanoi, Vietnam
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Pelton SI, Mould-Quevedo JF, Nguyen VH. The Impact of Adjuvanted Influenza Vaccine on Disease Severity in the US: A Stochastic Model. Vaccines (Basel) 2023; 11:1525. [PMID: 37896929 PMCID: PMC10610929 DOI: 10.3390/vaccines11101525] [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: 07/25/2023] [Revised: 09/08/2023] [Accepted: 09/22/2023] [Indexed: 10/29/2023] Open
Abstract
Influenza can exacerbate underlying medical conditions. In this study, we modelled the potential impact of an egg-based quadrivalent influenza vaccine (QIVe) or adjuvanted QIV (aQIV) on hospitalizations and mortality from influenza-related cardiovascular disease (CVD), respiratory, and other complications in adults ≥65 years of age in the US with underlying chronic conditions. We used a stochastic decision-tree model, with 1000 simulations varying input across predicted ranges. Due to the variable nature of influenza across seasons and differences in published estimates for input parameters, data are presented as 95% confidence intervals. Compared with no vaccination, use of aQIV would prevent 135,450-564,360 hospitalizations and 1612-29,226 deaths across outcomes evaluated. Overall, aQIV prevented 1071-18,388 more hospitalizations and 85-1944 more deaths than QIVe. By routine seasonal vaccination against influenza, a substantial number of severe influenza-associated complications and deaths, caused by direct influenza symptoms or by exacerbation of chronic conditions, can be prevented in high-risk adults ≥65 years of age in the US.
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Affiliation(s)
- Stephen I. Pelton
- Chobanian and Avedesian School of Medicine, Boston University, Boston, MA 02118, USA
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Chicoye A, Crépey P, Nguyen VH, Márquez-Peláez S, Postma M, Pugliese A, Ruiz-Aragón J, Mould-Quevedo J. Contributions of cost-effectiveness analyses (CEA) to influenza vaccination policy for older adults in Europe. Vaccine 2023; 41:5518-5524. [PMID: 37550142 DOI: 10.1016/j.vaccine.2023.07.073] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/28/2023] [Accepted: 07/30/2023] [Indexed: 08/09/2023]
Abstract
This review describes the importance of economic evaluations and real-world evidence (RWE) for the assessment of enhanced influenza vaccines for older adults in Europe. Individuals ≥65 years of age are at increased risk of severe influenza outcomes and many countries in Europe recommend enhanced vaccines for this population to mitigate immunosenescence. Some National Immunization Technical Advisory Groups (NITAGs) may preferentially recommend a specific enhanced vaccine, necessitating comparative economic evaluation and estimation of relative vaccine effectiveness between enhanced vaccine options in the absence of direct head-to-head efficacy data. Distinct approaches to economic modeling and cost-effectiveness analysis (CEA) guide national vaccination policies in Europe, including how underlying data, such as RWE, are used in these models. RWE is an important evidence source for input into CEA models based on disease factors (e.g., antigenic shift and seasonal variation) and practical factors (e.g., limitations of performing multiple randomized clinical trials to capture seasonal variation; the need to obtain relevant patient-oriented, real-world endpoints, such as hospitalizations). CEA is considered crucial to vaccine assessment among certain countries in Europe, but further harmonization of economic evaluations, including the use of RWE, across NITAGs in Europe may be of benefit, alongside standardized approaches for vaccine appraisal. In the future, more countries may use RWE as an input in CEA models to support NITAG recommendations for enhanced influenza vaccines in older populations, especially considering the value of RWE for the assessment of influenza epidemiology and vaccine effectiveness as stated by the World Health Organization, and the availability of a broad RWE base for certain enhanced vaccines.
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Affiliation(s)
- Annie Chicoye
- Sciences Po Paris, 27 Rue Saint-Guillaume, 75007 Paris, France
| | - Pascal Crépey
- EHESP School of Public Health, University of Rennes, CNRS, Arènes - UMR 6051, RSMS - Inserm U 1309, Rennes, France
| | | | - Sergio Márquez-Peláez
- Department of Economics, Economic Analysis, Faculty of Business Pablo de Olavide University, 41013 Seville, Spain
| | - Maarten Postma
- Department of Health Sciences, University of Groningen, University Medical Center Groningen, P.O. Box 72, 9700 AB Groningen, The Netherlands; Department of Economics, Econometrics & Finance, Faculty of Economics & Business, University of Groningen, 9713 AV Groningen, The Netherlands; Centre of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Jl. Raya Bandung Sumedang KM 21, Jatinangor 45363, Bandung, Indonesia
| | - Andrea Pugliese
- Department of Mathematics, University of Trento, 38123 Trento, Italy
| | - Jesús Ruiz-Aragón
- Department of Clinical Microbiology, Lab. Clinical Analysis, Hospital de la Línea, Cádiz, Spain
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Hung Nguyen V, Boileau C, Bogdanov A, Sredl M, Bonafede M, Ducruet T, Chavers S, Rosen A, Martin D, Buck P, Esposito D, Van de Velde N, Mansi JA. Relative Effectiveness of BNT162b2, mRNA-1273, and Ad26.COV2.S Vaccines and Homologous Boosting in Preventing COVID-19 in Adults in the US. Open Forum Infect Dis 2023; 10:ofad288. [PMID: 37496607 PMCID: PMC10368199 DOI: 10.1093/ofid/ofad288] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/23/2023] [Indexed: 07/28/2023] Open
Abstract
Background Few head-to-head comparisons have been performed on the real-world effectiveness of coronavirus disease 2019 (COVID-19) booster vaccines. We evaluated the relative effectiveness (rVE) of a primary series of mRNA-1273 vs BNT162b2 and Ad26.COV2.S and a homologous mRNA booster against any medically attended, outpatient, and hospitalized COVID-19. Methods A data set linking primary care electronic medical records with medical claims data was used for this retrospective cohort study of US patients age ≥18 years vaccinated with a primary series between February and October 2021 (Part 1) and a homologous mRNA booster between October 2021 and January 2022 (Part 2). Adjusted hazard ratios (HRs) were derived from 1:1 matching adjusted across potential covariates. rVE was (1 - HRadjusted) × 100. Additional analysis was performed across regions and age groups. Results Following adjustment, Part 1 rVE for mRNA-1273 vs BNT162b2 was 23% (95% CI, 22%-25%), 23% (95% CI, 22%-25%), and 19% (95% CI, 14%-24%), while the rVE for mRNA-1273 vs Ad26.COV2.S was 50% (95% CI, 48%-51%), 50% (95% CI, 48%-52%), and 57% (95% CI, 53%-61%) against any medically attended, outpatient, and hospitalized COVID-19, respectively. The adjusted rVE in Part 2 for mRNA-1273 vs BNT162b2 was 14% (95% CI, 10%-18%), 13% (95% CI, 8%-17%), and 19% (95% CI, 1%-34%) against any medically attended, outpatient, and hospitalized COVID-19, respectively. rVE against medically attended COVID-19 was higher in adults age ≥65 years (35%; 95% CI, 24%-47%) than in those age 18-64 years (13%; 95% CI, 9%-17%) after the booster. Conclusions In this study, mRNA-1273 was more effective than BNT162b2 or Ad26.COV2.S following a primary series during the Delta-dominant period and more effective than BNT162b2 as a booster during the Omicron-dominant period.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Nicolas Van de Velde
- Correspondence: James A. Mansi, 5 Vaughn Drive, Princeton, NJ, 08540 (); or Nicolas Van de Velde, 5 Vaughn Drive, Princeton, NJ, 08540 ()
| | - James A Mansi
- Correspondence: James A. Mansi, 5 Vaughn Drive, Princeton, NJ, 08540 (); or Nicolas Van de Velde, 5 Vaughn Drive, Princeton, NJ, 08540 ()
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Postma M, Fisman D, Giglio N, Márquez-Peláez S, Nguyen VH, Pugliese A, Ruiz-Aragón J, Urueña A, Mould-Quevedo J. Real-World Evidence in Cost-Effectiveness Analysis of Enhanced Influenza Vaccines in Adults ≥ 65 Years of Age: Literature Review and Expert Opinion. Vaccines (Basel) 2023; 11:1089. [PMID: 37376478 DOI: 10.3390/vaccines11061089] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023] Open
Abstract
Influenza vaccination can benefit most populations, including adults ≥ 65 years of age, who are at greater risk of influenza-related complications. In many countries, enhanced vaccines, such as adjuvanted, high-dose, and recombinant trivalent/quadrivalent influenza vaccines (aTIV/aQIV, HD-TIV/HD-QIV, and QIVr, respectively), are recommended in older populations to provide higher immunogenicity and increased relative vaccine efficacy/effectiveness (rVE) than standard-dose vaccines. This review explores how efficacy and effectiveness data from randomized controlled trials and real-world evidence (RWE) are used in economic evaluations. Findings from published cost-effectiveness analyses (CEA) on enhanced influenza vaccines for older adults are summarized, and the assumptions and approaches used in these CEA are assessed alongside discussion of the importance of RWE in CEA. Results from many CEA showed that adjuvanted and high-dose enhanced vaccines were cost-effective compared with standard vaccines, and that differences in rVE estimates and acquisition price may drive differences in cost-effectiveness estimates between enhanced vaccines. Overall, RWE and CEA provide clinical and economic rationale for enhanced vaccine use in people ≥ 65 years of age, an at-risk population with substantial burden of disease. Countries that consider RWE when making vaccine recommendations have preferentially recommended aTIV/aQIV, as well as HD-TIV/HD-QIV and QIVr, to protect older individuals.
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Affiliation(s)
- Maarten Postma
- Department of Health Sciences, University Medical Center Groningen, University of Groningen, P.O. Box 72, 9700 AB Groningen, The Netherlands
- Department of Economics, Econometrics & Finance, Faculty of Economics & Business, University of Groningen, 9713 AB Groningen, The Netherlands
- Centre of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, 40132 Bandung, Indonesia
| | - David Fisman
- Dalla Lana School of Public Health, Toronto, ON M5T 3M7, Canada
| | - Norberto Giglio
- Hospital de Niños Ricardo Gutièrrez, Buenos Aires 1425, Argentina
| | - Sergio Márquez-Peláez
- Department of Economics, Economic Analysis, Faculty of Business Pablo de Olavide University, 41013 Seville, Spain
| | | | - Andrea Pugliese
- Department of Mathematics, University of Trento, 38123 Trento, Italy
| | | | - Analia Urueña
- Centro de Estudios para la Prevención y Control de Enfermedades Transmisibles, Universidad Isalud, Buenos Aires C1095AAS, Argentina
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Nguyen VH, Ashraf M, Mould-Quevedo JF. Cost-Effectiveness of the Use of Adjuvanted Quadrivalent Seasonal Influenza Vaccine in Older Adults in Ireland. Vaccines (Basel) 2023; 11:vaccines11050933. [PMID: 37243037 DOI: 10.3390/vaccines11050933] [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: 03/30/2023] [Revised: 04/26/2023] [Accepted: 04/30/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Enhanced vaccines (e.g., containing adjuvants) have shown increased immunogenicity and effectiveness in older adults, who often respond sub-optimally to conventional influenza vaccines. In this study, we evaluated the cost-effectiveness of an inactivated, seasonal, MF59-adjuvanted quadrivalent influenza vaccine (aQIV) for use in adults ≥ 65 years in Ireland. METHODS A published dynamic influenza model incorporating social contact, population immunity, and epidemiological data was used to assess the cost-effectiveness of aQIV in adults ≥ 65 years of age compared with a non-adjuvanted QIV. Sensitivity analysis was performed for influenza incidence, relative vaccine effectiveness, excess mortality, and the impact on bed occupancy from co-circulating influenza and COVID-19. RESULTS The use of aQIV resulted in discounted incremental cost-effectiveness ratios (ICERs) of EUR 2420/quality-adjusted life years (QALYs) and EUR 12,970/QALY from societal and payer perspectives, respectively, both of which are below the cost-effectiveness threshold of EUR 45,000/QALY. Sensitivity analysis showed that aQIV was effective in most scenarios, except when relative vaccine effectiveness compared to QIV was below 3%, and resulted in a modest reduction in excess bed occupancy. CONCLUSION The use of aQIV for adults ≥ 65 years old in Ireland was shown to be highly cost-effective from both payer and societal perspectives.
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Brindle HE, Nadjm B, Choisy M, Christley R, Griffiths M, Baker S, Bryant JE, Campbell JI, Nguyen VVC, Nguyen TND, Vu TTH, Nguyen VH, Hoang BL, Le XL, Pham HM, Ta TDN, Ho DTN, Tran TN, Nguyen THN, Tran MP, Pham THP, Le VT, Nguyen DT, Hau TTT, Nguyen NV, Wertheim HFL, Thwaites GE, van Doorn HR. Aetiology and Potential Animal Exposure in Central Nervous System Infections in Vietnam. Ecohealth 2022; 19:463-474. [PMID: 36227390 PMCID: PMC9558024 DOI: 10.1007/s10393-022-01611-w] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 05/20/2022] [Indexed: 06/16/2023]
Abstract
An estimated 73% of emerging infections are zoonotic in origin, with animal contact and encroachment on their habitats increasing the risk of spill-over events. In Vietnam, close exposure to a wide range of animals and animal products can lead to acquisition of zoonotic pathogens, a number of which cause central nervous system (CNS) infections. However, studies show the aetiology of CNS infections remains unknown in around half of cases. We used samples and data from hospitalised patients with CNS infections, enrolled into the Vietnam Initiative on Zoonotic Infections multicentre study, to determine the association between aetiology and animal contact including those in whom the cause was unknown. Among 933 patients, a pathogen or an antibody response to it was identified in 291 (31.2%, 95% CI 28.3-34.3%). The most common pathogens were Streptococcus suis (n = 91 (9.8%, 8.0-11.9%)) and Japanese encephalitis virus (JEV) (n = 72 (7.7%, 6.1-9.7%)). Commonly reported animal contact included keeping, raising or handling (n = 364 (39.0%, 35.9-42.2%)) and handling, cooking or consuming raw meat, blood or viscera in the 2 weeks prior to symptom onset (n = 371 (39.8%, 36.6-43.0%)), with the latter most commonly from pigs (n = 343 (36.9%, 33.8-40.1%). There was no association between an unknown aetiology and exposure to animals in a multivariate logistic regression. Further testing for unknown or undetected pathogens may increase diagnostic yield, however, given the high proportion of zoonotic pathogens and the presence of risk factors, increasing public awareness about zoonoses and preventive measures can be considered.
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Affiliation(s)
- Hannah E Brindle
- Oxford University Clinical Research Unit, Hanoi, Vietnam.
- Institute of Infection and Global Health and National Institute, University of Liverpool, Liverpool, UK.
| | - Behzad Nadjm
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Medical Research Council Unit The Gambia at London School of Hygiene and Tropical Medicine, Atlantic Boulevard, Serekunda, The Gambia
| | - Marc Choisy
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam.
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
| | - Rob Christley
- Institute of Infection and Global Health and National Institute, University of Liverpool, Liverpool, UK
| | - Michael Griffiths
- Institute of Infection and Global Health and National Institute, University of Liverpool, Liverpool, UK
| | - Stephen Baker
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
- Department of Medicine, School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Juliet E Bryant
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- The Global Fund to Fight AIDS, Tuberculosis and Malaria, Geneva, Switzerland
| | - James I Campbell
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | | | | | - Ty Thi Hang Vu
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | | | - Bao Long Hoang
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Hanoi Medical University, Hanoi, Vietnam
| | - Xuan Luat Le
- National Hospital for Tropical Diseases, Hanoi, Vietnam
| | - Ha My Pham
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Wellcome Trust Sanger Institute, Hinxton, UK
| | | | | | | | | | - My Phuc Tran
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | | | - Van Tan Le
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | | | - Thi Thu Trang Hau
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Research Group 2, AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | | | - Heiman F L Wertheim
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- RadboudUMC, Nijmegen, The Netherlands
| | - Guy E Thwaites
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - H Rogier van Doorn
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
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13
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Brindle HE, Nadjm B, Choisy M, Christley R, Griffiths M, Baker S, Bryant JE, Campbell JI, Nguyen VVC, Nguyen TND, Vu TTH, Nguyen VH, Hoang BL, Le XL, Pham HM, Ta TDN, Ho DTN, Tran TN, Nguyen THN, Tran MP, Pham THP, Le VT, Nguyen DT, Hau TTT, Nguyen NV, Wertheim HFL, Thwaites GE, van Doorn HR. Correction: Aetiology and Potential Animal Exposure in Central Nervous System Infections in Vietnam. Ecohealth 2022:10.1007/s10393-022-01618-3. [PMID: 36417035 DOI: 10.1007/s10393-022-01618-3] [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] [Subscribe] [Scholar Register] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Affiliation(s)
- Hannah E Brindle
- Oxford University Clinical Research Unit, Hanoi, Vietnam.
- Institute of Infection and Global Health and National Institute, University of Liverpool, Liverpool, UK.
| | - Behzad Nadjm
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Medical Research Council Unit The Gambia at London School of Hygiene and Tropical Medicine, Atlantic Boulevard, Serekunda, The Gambia
| | - Marc Choisy
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam.
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
| | - Rob Christley
- Institute of Infection and Global Health and National Institute, University of Liverpool, Liverpool, UK
| | - Michael Griffiths
- Institute of Infection and Global Health and National Institute, University of Liverpool, Liverpool, UK
| | - Stephen Baker
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
- Department of Medicine, School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Juliet E Bryant
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- The Global Fund to Fight AIDS, Tuberculosis and Malaria, Geneva, Switzerland
| | - James I Campbell
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | | | | | - Ty Thi Hang Vu
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | | | - Bao Long Hoang
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Hanoi Medical University, Hanoi, Vietnam
| | - Xuan Luat Le
- National Hospital for Tropical Diseases, Hanoi, Vietnam
| | - Ha My Pham
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Wellcome Trust Sanger Institute, Hinxton, UK
| | | | | | | | | | - My Phuc Tran
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | | | - Van Tan Le
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | | | - Thi Thu Trang Hau
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Research Group 2, AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | | | - Heiman F L Wertheim
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- RadboudUMC, Nijmegen, The Netherlands
| | - Guy E Thwaites
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - H Rogier van Doorn
- Oxford University Clinical Research Unit, Hanoi, Vietnam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
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Nguyen VH, Mould-Quevedo JF. Estimating the Impact of Influenza Vaccination on Acute and ICU Hospital Bed Usage in an Influenza Season under Endemic COVID-19 in the US. Vaccines (Basel) 2022; 10:vaccines10111908. [PMID: 36423004 PMCID: PMC9693626 DOI: 10.3390/vaccines10111908] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 10/11/2022] [Revised: 11/04/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
In 2021–2022, influenza vaccine coverage in the US dropped below pre-COVID-19 pandemic levels. Cocirculation of COVID-19 and influenza could place a substantial burden on hospital utilization in future seasons, particularly given the reduced exposure to influenza during the pandemic. We used a dynamic susceptible-exposed-infected-recovered model to simulate influenza transmission with varying influenza vaccine coverage against a background of COVID-19 circulation, in order to estimate acute and ICU hospital bed occupancy for both diseases. We evaluated two vaccine scenarios: egg-based quadrivalent influenza vaccine (QIVe) for all age groups or cell-based QIV (QIVc) for 0.5–64 year-olds with adjuvanted QIV (aQIV) for ≥65 year-olds. ICU bed availability was more limiting than general hospital bed availability, with a vaccine coverage of ≥70% required to avoid negatively impacting ICU bed availability in a high-incidence influenza season. The timing of disease peaks was a key factor together with vaccine coverage, with a difference of ≥50 days needed between peak influenza and COVID-19 bed usage together with 65% influenza vaccine coverage to avoid negative impacts. QIVc + aQIV resulted in lower bed occupancy which, while not substantial, may be critical in very high hospital resource usage situations. In a situation with co-circulating influenza and COVID-19, proactive vaccination planning could help to avert overwhelming healthcare systems in upcoming influenza seasons.
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Lacasse Y, Bernard S, Maltais F, Nguyen VH. Cost-Effectiveness of an Extended Home Visit Program for Oxygen-Dependent COPD Patients. Respir Care 2022; 67:1082-1090. [PMID: 35728823 PMCID: PMC9994336 DOI: 10.4187/respcare.09781] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Long-term oxygen therapy in COPD is usually supervised through home-care respiratory programs. Such programs often involve an intensive education intervention at the initiation of long-term oxygen therapy, followed by an extended follow-up period that aims toward home oxygen adherence. The objective of this study was to estimate the cost-effectiveness ratio of such a maintenance program. METHODS A simulation model was developed that compared 2 strategies after the intensive education intervention: (1) enrollment and (2) no enrollment in a maintenance program. The study population consisted of a hypothetical cohort of 200 patients (100 patients per group; mean age, 74 years; 45% men; mean FEV1 of 43% predicted value; and mean resting PaO2 while breathing air, 50 mm Hg). Effectiveness assumptions of the program were derived from a current literature review. The primary outcome was the ratio of the incremental cost of the program per quality-adjusted life-years gained. Only direct costs were considered; a health-care system perspective was adopted. Costs are reported in 2020 Canadian dollars (Can $). RESULTS Over a 5-year period, an extended home-visit program may prevent 9 deaths and provide an additional 39 years of life and 24 quality-adjusted life-years. Compared with usual care (ie, no enrollment in the maintenance program), the incremental cost-effectiveness ratio was Can $17,197 per quality-adjusted life-years gained. Sensitivity analyses demonstrated the robustness of the model. Only a reduction in adherence of 25% per year would increase the incremental cost-effectiveness ratio per quality-adjusted life-years beyond the threshold of Can $50,000 that is usually considered as acceptable from a health-care system perspective. CONCLUSIONS An extended home-visit program to maintain or improve adherence to long-term oxygen therapy in patients with COPD would most likely be cost-effective.
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Affiliation(s)
- Yves Lacasse
- Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec - Université Laval, Québec, Québec, Canada.
| | - Sarah Bernard
- Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec - Université Laval, Québec, Québec, Canada
| | - François Maltais
- Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec - Université Laval, Québec, Québec, Canada
| | - Van Hung Nguyen
- Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec - Université Laval, Québec, Québec, Canada
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16
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Nguyen VH, Roy B. Modelling the Economic Impact of lnfluenza Vaccine Programs with the Cell-Based Quadrivalent Influenza Vaccine and Adjuvanted Trivalent Influenza Vaccine in Canada. Vaccines (Basel) 2022; 10:vaccines10081257. [PMID: 36016145 PMCID: PMC9412987 DOI: 10.3390/vaccines10081257] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/19/2022] [Accepted: 07/26/2022] [Indexed: 12/10/2022] Open
Abstract
In Canada, approximately 12,000 people annually are hospitalized with influenza. While vaccination is the most effective method for reducing the burden of seasonal influenza, the propagation of vaccine virus strains in eggs can result in egg adaption, resulting in reduced antigenic similarity to circulating strains and thus lower vaccine effectiveness (VE). Cell-based propagation methods avoid these alterations and therefore may be more effective than egg-propagation vaccines. We evaluated three different scenarios: (1) egg-based quadrivalent influenza vaccine (QIVe) for individuals <65 years and adjuvanted trivalent influenza vaccine (aTIV) for ≥65 years; (2) QIVe (<65 years) and high-dose QIV (HD −; QIV; ≥65 years); and (3) cell-based derived QIV (QIVc; <65 years) and aTIV (≥65 years) compared with a baseline scenario of QIVe for all age groups. Modelling was performed using a dynamic age-structured SEIR model, which assessed each strain individually using data from the 2012−2019 seasons. Probabilistic sensitivity analysis assessed the robustness of the results with respect to variation in absolute VE, relative VE, number of egg-adapted seasons, and economic parameters. QIVe + aTIV was cost-saving compared with the baseline scenario (QIVe for all), and QIVe + HD − QIV was not cost-effective in the majority of simulations, reflecting the high acquisition cost of HD − QIV. Overall, while the incremental benefits may vary by influenza season, QIVc + aTIV resulted in the greatest reductions in cases, hospitalizations, and mortality, and was cost-effective (ICER < CAD 50,000) in all simulations.
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Affiliation(s)
- Van Hung Nguyen
- VHN Consulting Inc., 95 McCulloch, Montreal, QC H2V3L8, Canada
| | - Bertrand Roy
- Seqirus Canada, 16766 Trans-Canada Hwy Suite 504, Kirkland, QC H9H 4M7, Canada
- Correspondence:
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17
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Organo ND, Granada SMJM, Pineda HGS, Sandro JM, Nguyen VH, Gummert M. Publisher Correction: Assessing the potential of a Trichoderma-based compost activator to hasten the decomposition of incorporated rice straw. Sci Rep 2022; 12:1647. [PMID: 35079133 PMCID: PMC8789903 DOI: 10.1038/s41598-022-05490-7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Nolissa D Organo
- Division of Soil Science, Agricultural Systems Institute, College of Agriculture and Food Science, University of the Philippines Los Baños, Laguna, Philippines
| | - Shaira Mhel Joy M Granada
- Division of Soil Science, Agricultural Systems Institute, College of Agriculture and Food Science, University of the Philippines Los Baños, Laguna, Philippines
| | - Honey Grace S Pineda
- Division of Soil Science, Agricultural Systems Institute, College of Agriculture and Food Science, University of the Philippines Los Baños, Laguna, Philippines
| | - Joseph M Sandro
- Mechanization and Postharvest Cluster, Sustainable Impact Platform, International Rice Research Institute, 4030, Los Baños, Laguna, Philippines.
| | - Van Hung Nguyen
- Mechanization and Postharvest Cluster, Sustainable Impact Platform, International Rice Research Institute, 4030, Los Baños, Laguna, Philippines
| | - Martin Gummert
- Mechanization and Postharvest Cluster, Sustainable Impact Platform, International Rice Research Institute, 4030, Los Baños, Laguna, Philippines
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18
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Nguyen TT, Nguyen VH, Vu MP. Gemcitabine, Dexamethasone, Cisplatin with Rituximab in Treatment Transplant- Ineligible Relapsed Non-Hodgkin B-cell Lymphoma Patients. Clin Cancer Investig J 2022. [DOI: 10.51847/hjb1m4gctu] [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: 11/06/2022]
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19
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Albrecht S, Miedzybrodzki B, Palma L, Nguyen VH, Dudley RW, Pietsch T, Goschzik T, Jabado N, Goudie C, Foulkes WD. Medulloblastoma and Cowden syndrome: Further evidence of an association. Free Neuropathol 2022; 3:3-1. [PMID: 37284158 PMCID: PMC10209873 DOI: 10.17879/freeneuropathology-2022-3684] [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] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/02/2022] [Indexed: 06/08/2023]
Abstract
Cowden syndrome (CS) is an autosomal dominant hamartoma and tumor predisposition syndrome caused by heterozygous pathogenic germline variants in PTEN in most affected individuals. Major features include macrocrania, multiple facial tricholemmomas, acral and oral keratoses and papillomas, as well as mammary, non-medullary thyroid, renal, and endometrial carcinomas. Lhermitte-Duclos disease (LDD), or dysplastic gangliocytoma of the cerebellum, is the typical brain tumor associated with CS; the lifetime risk for LDD in CS patients has been estimated to be as high as 30%. In contrast, medulloblastoma is much rarer in CS, with only 4 reported cases in the literature. We report a 5th such patient. All 5 patients were diagnosed between 1 and 2 years of age and not all showed the pathognomonic clinical stigmata of CS at the time of their medulloblastoma diagnosis. Where detailed information was available, the medulloblastoma was of the SHH-subtype, in keeping with the observation that in sporadic medulloblastomas, PTEN-alterations are usually encountered in the SHH-subtype. Medulloblastomas can be associated with several tumor-predisposition syndromes and of the 4 medulloblastoma subtypes, SHH-medulloblastomas in children have the highest prevalence of predisposing germline variants (approx. 40%). CS should be added to the list of SHH-medulloblastoma-associated syndromes. Germline analysis of PTEN should be performed in infants with SHH-medulloblastomas, regardless of their clinical phenotype, especially if they do not carry pathogenic germline variants in PTEN or PTEN, the most commonly altered predisposing genes in this age-group. In addition, these cases show that CS has a biphasic brain tumor distribution, both in regards to the age of onset and the tumor type: a small number of CS patients develop a medulloblastoma in infancy while many more develop LDD in adulthood.
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Affiliation(s)
| | - Barbara Miedzybrodzki
- Division of Dermatology, Department of Pediatrics, McGill University Health Centre, Montreal Children's Hospital, Montreal, QCCanada
| | - Laura Palma
- Department of Human Genetics, McGill University, Montreal, QCCanada
- Division of Medical Genetics, Department of Specialized Medicine, McGill University Health Centre, Montreal, QCCanada
| | - Van Hung Nguyen
- Department of Pathology, McGill University, Montreal, QCCanada
| | - Roy W.R. Dudley
- Division of Neurosurgery, Department of Pediatric Surgery, Montreal Children's Hospital, McGill University Health Centre, Montreal, QCCanada
| | - Torsten Pietsch
- Department of Neuropathology, DGNN Brain Tumor Reference Center, University of Bonn Medical Center, BonnGermany
| | - Tobias Goschzik
- Department of Neuropathology, DGNN Brain Tumor Reference Center, University of Bonn Medical Center, BonnGermany
| | - Nada Jabado
- Department of Human Genetics, McGill University, Montreal, QCCanada
- Department of Pediatrics, McGill University, Montreal, QCCanada
- The Research Institute of the McGill University Health Centre, Child Health and Human Development Program, Montreal, QCCanada
| | - Catherine Goudie
- The Research Institute of the McGill University Health Centre, Child Health and Human Development Program, Montreal, QCCanada
- Division of Hematology-Oncology, Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, QCCanada
| | - William D. Foulkes
- Department of Human Genetics, McGill University, Montreal, QCCanada
- Cancer Axis, Lady Davis Institute, The Jewish General Hospital, Montreal, QCCanada
- Cancer Research Program, The Research Institute of the McGill University Health Centre, Montreal, QCCanada
- Gerald Bronfman Department of Oncology, McGill University, Montreal, QCCanada
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20
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Nguyen VH, Hilsky Y, Mould-Quevedo J. The Epidemiological and Economic Impact of a Cell-Based Quadrivalent Influenza Vaccine in Adults in the US: A Dynamic Modeling Approach. Vaccines (Basel) 2021; 9:vaccines9101095. [PMID: 34696203 PMCID: PMC8538069 DOI: 10.3390/vaccines9101095] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 08/23/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 12/03/2022] Open
Abstract
Mutations of the H3N2 vaccine strain during the egg-based vaccine manufacturing process partly explain the suboptimal effectiveness of traditional seasonal influenza vaccines. Cell-based influenza vaccines improve antigenic match and vaccine effectiveness by avoiding such egg-adaptation. This study evaluated the public health and economic impact of a cell-based quadrivalent influenza vaccine (QIVc) in adults (18–64 years) compared to the standard egg-based quadrivalent influenza vaccine (QIVe) in the US. The impact of QIVc over QIVe in public health and cost outcomes was estimated using a dynamic age-structured SEIR transmission model, which accounted for four circulating influenza strains [A/H1N1pdm9, A/H3N2, B(Victoria), and B(Yamagata)] and was calibrated on the 2013–2018 influenza seasons. The robustness of the results was assessed in univariate and probabilistic sensitivity analyses. Switching from QIVe to QIVc in 18- to 64-year-olds may prevent 5.7 million symptomatic cases, 1.8 million outpatient visits, 50,000 hospitalizations, and 5453 deaths annually. The switch could save 128,000 Quality-Adjusted Life Years (QALYs) and US $ 845 M in direct costs, resulting in cost-savings in a three-year time horizon analysis. Probabilistic sensitivity analyses confirmed the robustness of the cost-saving result. The analysis shows that QIVc is expected to prevent hospitalizations and deaths, and result in substantial savings in healthcare costs.
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Affiliation(s)
- Van Hung Nguyen
- VHN Consulting Inc., 95 McCulloch, Montreal, QC H2V 3L8, Canada;
| | - Yvonne Hilsky
- Seqirus USA Inc., 25 Deforest Avenue, Summit, NJ 07901, USA;
| | - Joaquin Mould-Quevedo
- Seqirus USA Inc., 25 Deforest Avenue, Summit, NJ 07901, USA;
- Correspondence: ; Tel.: +1-514-264-9718
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21
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Nguyen TMH, Nguyen TTO, Le NT, Spyridovich EV, Nguyen VH, Chau VM. Preliminary Observation on the Fibrinolytic Activity of Dimocarpus longan Seed. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03519-3] [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: 11/28/2022]
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22
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Boikos C, Imran M, Nguyen VH, Ducruet T, Sylvester GC, Mansi JA. Effectiveness of the Adjuvanted Influenza Vaccine in Older Adults at High Risk of Influenza Complications. Vaccines (Basel) 2021; 9:vaccines9080862. [PMID: 34451987 PMCID: PMC8402367 DOI: 10.3390/vaccines9080862] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 06/15/2021] [Revised: 07/23/2021] [Accepted: 07/30/2021] [Indexed: 01/12/2023] Open
Abstract
MF59®-adjuvanted trivalent inactivated influenza vaccine (aIIV3) and high-dose trivalent inactivated influenza vaccine (HD-IIV3) elicit an enhanced immune response in older adults compared to standard, quadrivalent inactivated influenza vaccines (IIV4). We sought to determine the relative vaccine effectiveness (rVE) of aIIV3 versus IIV4 and HD-IIV3 in preventing influenza-related medical encounters in this retrospective cohort study involving adults ≥65 years with ≥1 health condition during the 2017-2018 and 2018-2019 influenza seasons. Data were obtained from primary and specialty care electronic medical records linked with pharmacy and medical claims. Adjusted odds ratios (OR) were derived from an inverse probability of treatment-weighted sample adjusted for age, sex, race, ethnicity, geographic region, vaccination week, and health status. rVE was determined using the formula (% rVE = 1 - ORadjusted) × 100. Analysis sets included 1,755,420 individuals for the 2017-2018 season and 2,055,012 for the 2018-2019 season. Compared to IIV4, aIIV3 was 7.1% (95% confidence interval 3.3-10.8) and 20.4% (16.2-24.4) more effective at preventing influenza-related medical encounters in the 2017-2018 and 2018-2019 seasons, respectively. Comparable effectiveness was observed with HD-IIV3 across both seasons. Our results support improved effectiveness of aIIV3 vs IIV4 in a vulnerable population of older adults at high risk of influenza and its complications.
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Affiliation(s)
- Constantina Boikos
- Seqirus Inc., Kirkland, QC H9H 4M7, Canada; (M.I.); (J.A.M.)
- Correspondence: ; Tel.: +1-514-702-6545
| | - Mahrukh Imran
- Seqirus Inc., Kirkland, QC H9H 4M7, Canada; (M.I.); (J.A.M.)
| | - Van Hung Nguyen
- VHN Consulting, Montreal, QC H2V 3L8, Canada; (V.H.N.); (T.D.)
| | - Thierry Ducruet
- VHN Consulting, Montreal, QC H2V 3L8, Canada; (V.H.N.); (T.D.)
| | | | - James A. Mansi
- Seqirus Inc., Kirkland, QC H9H 4M7, Canada; (M.I.); (J.A.M.)
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23
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Cao DT, Huong Doan TM, Pham VC, Minh Le TH, Chae JW, Yun HY, Na MK, Kim YH, Pham MQ, Nguyen VH. Molecular design of anticancer drugs from marine fungi derivatives. RSC Adv 2021; 11:20173-20179. [PMID: 35479875 PMCID: PMC9033662 DOI: 10.1039/d1ra01855h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/24/2021] [Indexed: 12/21/2022] Open
Abstract
Heat shock protein 90 (Hsp90) is one of the most potential targets in cancer therapy. We have demonstrated using a combination of molecular docking and fast pulling of ligand (FPL) simulations that marine fungi derivatives can be possible inhibitors, preventing the biological activity of Hsp90. The computational approaches were validated and compared with previous experiments. Based on the benchmark of available inhibitors of Hsp90, the GOLD docking package using the ChemPLP scoring function was found to be superior over both Autodock Vina and Autodock4 in the preliminary estimation of the ligand-binding affinity and binding pose with the Pearson correlation, R = -0.62. Moreover, FPL calculations were also indicated as a suitable approach to refine docking simulations with a correlation coefficient with the experimental data of R = -0.81. Therefore, the binding affinity of marine fungi derivatives to Hsp90 was evaluated. Docking and FPL calculations suggest that five compounds including 23, 40, 46, 48, and 52 are highly potent inhibitors for Hsp90. The obtained results enhance cancer therapy research.
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Affiliation(s)
- Duc Tuan Cao
- Hai Phong University of Medicine and Pharmacy Haiphong Vietnam
| | - Thi Mai Huong Doan
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology Hanoi Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology Hanoi Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology Hanoi Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology Hanoi Vietnam
| | - Thi Hong Minh Le
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology Hanoi Vietnam
| | - Jung-Woo Chae
- College of Pharmacy, Chungnam National University Daejeon Republic of Korea
| | - Hwi-Yeol Yun
- College of Pharmacy, Chungnam National University Daejeon Republic of Korea
| | - Min-Kyun Na
- College of Pharmacy, Chungnam National University Daejeon Republic of Korea
| | - Young-Ho Kim
- College of Pharmacy, Chungnam National University Daejeon Republic of Korea
| | - Minh Quan Pham
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology Hanoi Vietnam
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology Hanoi Vietnam
| | - Van Hung Nguyen
- Hai Phong University of Medicine and Pharmacy Haiphong Vietnam
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24
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Nguyen VH, Yeo YH, Zou B, Le MH, Henry L, Cheung RC, Nguyen MH. Discrepancies between actual weight, weight perception and weight loss intention amongst persons with NAFLD. J Intern Med 2021; 289:840-850. [PMID: 33340186 DOI: 10.1111/joim.13203] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 10/21/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Currently, weight loss remains the main management strategy for NAFLD, but the weight loss intention and methods remain poorly characterized. METHODS We analysed data about the perception of weight status, intention and methods to lose weight amongst 3,822 persons with NAFLD (United States Fatty Liver Index ≥ 30) from the National Health and Nutrition Examination Survey, 2001-2014. RESULTS Only 53.9% of people with NAFLD intended to lose weight, 91.8% with perception of overweight and 8.2% with normal weight perception. Persons with perception of overweight or overweight/obese status were four times more likely to try to lose weight (adjusted odds ratios 3.9 and 4.2, respectively, both P < 0.0001). Younger age, women, higher educational level, Hispanic and blacks (versus whites) were significant independent factors associated with weight loss intention. Notably, ≤10% attended weight loss programme. Metabolic equivalent of task hours per week was significantly higher in whites who exercised to lose weight (vs. no exercise, P = 0.003) but not in other racial/ethnic groups. Interestingly, calorie intake was similar between those who dieted versus not (2056 vs. 1970 kcal/day, P = 0.11). About 30% reported ≥ 10-lb weight loss, with 50% higher odds of success for men but there was no difference by race/ethnicity. CONCLUSION Overweight or obese perception was a key driver in weight loss activities but was inconsistent with actual weight status and varied by race/ethnicity and other sociodemographic factors. Weight loss programme is under-utilized and should take in account of weight perception training and culturally appropriate approach.
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Affiliation(s)
- V H Nguyen
- From the, Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
| | - Y H Yeo
- From the, Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
| | - B Zou
- From the, Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
| | - M H Le
- From the, Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
| | - L Henry
- From the, Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
| | - R C Cheung
- Division of Gastroenterology and Hepatology, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - M H Nguyen
- From the, Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
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Hoang HH, Tran ATN, Nguyen VH, Nguyen TTB, Nguyen TAP, Le DD, Jatho A, Onchonga D, Duong TV, Nguyen MT, Tran BT. Attention Deficit Hyperactivity Disorder (ADHD) and Associated Factors Among First-Year Elementary School Students. J Multidiscip Healthc 2021; 14:997-1005. [PMID: 33958873 PMCID: PMC8096448 DOI: 10.2147/jmdh.s301091] [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: 01/08/2021] [Accepted: 03/19/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Attention deficit hyperactivity disorder (ADHD) is a mental health disorder commonly in children. This study aimed to examine the prevalence of ADHD and risk factors among first-year pupils in Vietnam's urban city. Patients and Methods A cross-sectional study was conducted in four randomly selected primary schools. Information on 525 pupils in grade 1 (ages 6 to 7 years) was collected from 525 parents/caregivers and 28 teachers. We used the Vanderbilt Assessment Scales with two separate versions for parents and teachers to screen children with ADHD symptoms. Results Among the total of 525 pupils, 24 (4.6%) were found to have ADHD symptom types (boy: 6.5%; girl: 2.1%). The combined ADHD type accounted for the highest proportion of 3.4%, followed by predominantly inattentive and predominantly hyperactivity type. ADHD prevalence rated by teachers was higher than those rated by parents. High agreement between parents and teachers was reported (κ > 0.6). The risk of ADHD increased in male participants (aOR=4.90, 95% CI 1.51-15.85), those having a first-degree relative with ADHD (aOR=85.2, 95% CI 1.66-4371.8), in-utero exposure to tobacco smoke (aOR=4.78, 95% CI 1.31-17.44), and prenatal alcohol drinking (aOR=8.87, 95% CI 2.29-34.42). Conclusion These findings suggest the importance of ADHD screening for pupils attending elementary schools, particularly those with a family history of ADHD. Public health programs should reduce prenatal exposure to the potential risk factors of ADHD (smoking and alcohol consumption).
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Affiliation(s)
- Hai Huu Hoang
- Student's Affairs Office, Hue University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | | | - Van Hung Nguyen
- Faculty of Public Health, Hue University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | - Thi Thanh Binh Nguyen
- Department of Paediatrics, Hue University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | - Thi Anh Phuong Nguyen
- Faculty of Nursing, Hue University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | - Dinh Duong Le
- Faculty of Public Health, Hue University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | - Alfred Jatho
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Republic of Korea
| | - David Onchonga
- Doctoral School of Health Sciences, University of Pécs, Pécs, Hungary
| | - Tuyen Van Duong
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, 110-31, Taiwan
| | - Minh Tu Nguyen
- Undergraduate Training Office, Hue University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | - Binh Thang Tran
- Faculty of Public Health, Hue University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
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Boikos C, Imran M, Nguyen VH, Ducruet T, Sylvester GC, Mansi JA. Effectiveness of the Cell-Derived Inactivated Quadrivalent Influenza Vaccine in Individuals at High Risk of Influenza Complications in the 2018-2019 United States Influenza Season. Open Forum Infect Dis 2021; 8:ofab167. [PMID: 34327253 PMCID: PMC8314952 DOI: 10.1093/ofid/ofab167] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 11/26/2020] [Accepted: 03/30/2021] [Indexed: 12/25/2022] Open
Abstract
Background Higher rates of influenza-related morbidity and mortality occur in individuals with underlying medical conditions. To improve vaccine effectiveness, cell-based technology for influenza vaccine manufacturing has been developed. Cell-derived inactivated quadrivalent influenza vaccines (cIIV4) may improve protection in seasons in which egg-propagated influenza viruses undergo mutations that affect antigenicity. This study aimed to estimate the relative vaccine effectiveness (rVE) of cIIV4 versus egg-derived inactivated quadrivalent influenza vaccines (eIIV4) in preventing influenza-related medical encounters in individuals with underlying medical conditions putting them at high risk of influenza complications during the 2018-2019 US influenza season. Methods An integrated dataset, linking primary care electronic medical records with claims data, was used to conduct a retrospective cohort study among individuals aged ≥4 years, with ≥1 health condition, vaccinated with cIIV4 or eIIV4 during the 2018-2019 season. Adjusted odds ratios (ORs) were derived using a doubly robust inverse probability of treatment-weighting (IPTW) model, adjusting for age, sex, race, ethnicity, geographic region, vaccination week, and health status. Relative vaccine effectiveness was estimated by (1 - OR) × 100 and presented with 95% confidence intervals (CIs). Results The study cohort included 471 301 cIIV4 and 1 641 915 eIIV4 recipients. Compared with eIIV4, cIIV4 prevented significantly more influenza-related medical encounters among individuals with ≥1 health condition (rVE, 13.4% [95% CI, 11.4%-15.4%]), chronic pulmonary disease (rVE, 18.7% [95% CI, 16.0%-21.3%]), and rheumatic disease (rVE, 11.8% [95% CI, 3.6%-19.3%]). Conclusions Our findings support the use of cIIV4 in individuals ≥4 years of age at high risk of influenza complications and provide further evidence supporting improved effectiveness of cIIV4 compared with eIIV4.
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Nguyen TMH, Le HL, Ha TT, Bui BH, Le NT, Nguyen VH, Nguyen TVA. Inhibitory effect on human platelet aggregation and coagulation and antioxidant activity of C. edulis Ker Gawl rhizome and its secondary metabolites. J Ethnopharmacol 2020; 263:113136. [PMID: 32758576 DOI: 10.1016/j.jep.2020.113136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 02/21/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Although Canna edulis Ker Gawl rhizome has been used in Traditional Vietnamese Medicine to prevent and treat heart diseases without thorough scientific evidence, limited intensive search for the bioactivities and useful substances has been done. AIM OF THE STUDY This study aims to investigate the antiplatelet aggregation, anticoagulant and antioxidant activity of extracts from C. edulis rhizome, separate and purify its compounds from the most active fraction and evaluate the antiplatelet aggregation, anticoagulant and antioxidant activity of isolated compounds. MATERIALS AND METHODS C. edulis rhizome was extracted with ethanol, then fractionated with n-hexane, ethyl acetate and water. The inhibitory effect on adenosine diphosphate- and collagen-induced human platelet aggregation was evaluated. Prothrombin time, activated partial thromboplastine time and thrombine time were measured to examine the anticoagulant activity. The free radical scavenging ability was assessed with DPPH and ABTS assays. The fraction that showed the most active was used to separate and purify compounds. The structures of compounds were elucidated by NMR and MS spectroscopic methods. Isolated compounds were also tested for antiplatelet, anticoagulant and antioxidant activity. RESULTS The ethyl acetate fraction showed the most potent antiplatelet aggregation, anticoagulant and antioxidant activity. Subsequent fractionation of this active fraction resulted in the isolation of seven known compounds: 5-hydroxy-6-methyl-2H-pyran-2-one (1), epimedokoreanone A (2), nepetoidin B (3), ferulic acid (4), caffeic acid (5), hydroxytyrosol (6), and 1H-indole-3-carboxaldehyde (7). Previous studies reported the antiplatelet, anticoagulant and antioxidant activity of ferulic acid (4), caffeic acid (5) and hydroxytyrosol (6) and the antioxidant activity of nepetoidin B (3). This study demonstrated that both epimedokoreanone A (2) and nepetoidine B (3) also exhibited good antiplatelet effect and epimedokoreanone A (2) also had effective anticoagulant and antioxidant activity, while 5-hydroxy-6-methyl-2H-pyran-2-one (1) showed weaker antiplatelet and antioxidant activity but no anticoagulant effect. CONCLUSIONS This is the first experimental study to demonstrate the potent dose-dependent antiplatelet aggregation, anticoagulant and antioxidant activity of C. edulis rhizome and its pure compounds, supporting the traditional use of this plant for the treatment of heart diseases. The C. edulis rhizome is a potential source of bioactive compounds or functional food for treatment and/or prevention of heart- and oxidative stress-related diseases and its bioactive compounds are good candidates for drug development of anti-thrombosis and antioxidant agents.
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Affiliation(s)
- Thi Minh Hang Nguyen
- Center of Drug Research and Development, Institute of Marine Biochemistry, Viet Nam
| | - Hong Luyen Le
- Department of Life Sciences, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Thi Thoa Ha
- Center of Drug Research and Development, Institute of Marine Biochemistry, Viet Nam
| | - Bich Hau Bui
- Department of Life Sciences, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Nguyen Thanh Le
- Center of Drug Research and Development, Institute of Marine Biochemistry, Viet Nam
| | - Van Hung Nguyen
- Center of Drug Research and Development, Institute of Marine Biochemistry, Viet Nam
| | - Thi Van Anh Nguyen
- Department of Life Sciences, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam.
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Nguyen TAH, Ngo HH, Guo WS, Nguyen TT, Vu ND, Soda S, Nguyen THH, Nguyen MK, Tran TVH, Dang TT, Nguyen VH, Cao TH. White hard clam (Meretrix lyrata) shells as novel filter media to augment the phosphorus removal from wastewater. Sci Total Environ 2020; 741:140483. [PMID: 32615439 DOI: 10.1016/j.scitotenv.2020.140483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 05/13/2020] [Revised: 06/20/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
It is well recognized that filter media play a crucial role in constructed wetlands (CWs) for decontamination of phosphorus (P)-rich wastewater. This study investigates the suitability of raw white hard clam shells (WHC) and white hard clam shells thermally modified at 800 °C (WHC-M800) as potential media to enhance P treatment performance in CWs. The results indicated that both WHC and WHC-M800 displayed appropriate physicochemical properties, such as high porosity, excellent hydraulic conductivity, and rich Ca content. WHC-M800 exhibited a superior P adsorption capacity (38.7 mg/g) to WHC (12.8 mg/g). However, the practical utilization of WHC-M800 as filter media in CWs may be compromised, due to certain limitations, for example: extremely high pH values in the post-adsorption solutions; high weight losses during calcination and adsorption processes; low mechanical strength; and intensive energy consumption. In contrast, the WHC demonstrated significant advantages of reasonably high P adsorption capacity, locally abundant availability, low cost, and marginal side effects. The fractionation of inorganic P of WHC and WHC-M800 revealed that Ca-bounded P was the most dominant binding form, followed by loosely bound P, Fe-P, occluded P, and Al-P. The present study demonstrates that recycling of WHC shells as a potential substrate in CWs provides a feasible method for upgrading P removal in CWs. Additionally, it helps to reduce waste WHC shells in a simple, cheap, and eco-friendly way, thus can double environmental benefits.
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Affiliation(s)
- T A H Nguyen
- Vietnam Japan University (VJU), Vietnam National University, Hanoi (VNU), Luu Huu Phuoc St., Nam Tu Liem Dist., Hanoi 101000, Vietnam
| | - H H Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology, Sydney, Broadway NSW 2007, Australia.
| | - W S Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology, Sydney, Broadway NSW 2007, Australia
| | - T T Nguyen
- Graduate School of Science and Engineering, Ritsumeikan University (RITs), Biwako-Kusatsu Campus, Shiga 525-8577, Japan
| | - N D Vu
- University of Science (HUS), Vietnam National University, Hanoi (VNU), 334 Nguyen Trai Rd., Thanh Xuan Dist., Hanoi 120106, Vietnam; Center for Environmental Technology and Sustainable Development, VNU University of Science (VNU-HUS), 334 Nguyen Trai Rd., Thanh Xuan Trung Ward, Thanh Xuan Dist., Hanoi 120106, Vietnam
| | - S Soda
- Graduate School of Science and Engineering, Ritsumeikan University (RITs), Biwako-Kusatsu Campus, Shiga 525-8577, Japan
| | - T H H Nguyen
- University of Science (HUS), Vietnam National University, Hanoi (VNU), 334 Nguyen Trai Rd., Thanh Xuan Dist., Hanoi 120106, Vietnam
| | - M K Nguyen
- University of Science (HUS), Vietnam National University, Hanoi (VNU), 334 Nguyen Trai Rd., Thanh Xuan Dist., Hanoi 120106, Vietnam
| | - T V H Tran
- Vietnam Japan University (VJU), Vietnam National University, Hanoi (VNU), Luu Huu Phuoc St., Nam Tu Liem Dist., Hanoi 101000, Vietnam
| | - T T Dang
- Vietnam Japan University (VJU), Vietnam National University, Hanoi (VNU), Luu Huu Phuoc St., Nam Tu Liem Dist., Hanoi 101000, Vietnam
| | - V H Nguyen
- Research Center for Environmental Monitoring and Modeling, VNU University of Science (VNU-HUS), 334 Nguyen Trai Rd., Thanh Xuan Trung Ward, Thanh Xuan Dist., Hanoi 120106, Vietnam
| | - T H Cao
- Vietnam Japan University (VJU), Vietnam National University, Hanoi (VNU), Luu Huu Phuoc St., Nam Tu Liem Dist., Hanoi 101000, Vietnam; Center for Environmental Technology and Sustainable Development, VNU University of Science (VNU-HUS), 334 Nguyen Trai Rd., Thanh Xuan Trung Ward, Thanh Xuan Dist., Hanoi 120106, Vietnam
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Nguyen TMH, Le HL, Tran QH, Ha TT, Bui BH, Le NT, Nguyen VH, Nguyen TVA. Data on antiplatelet aggregation, anticoagulation and antioxidant activities of Canna edulis Ker rhizome and its secondary metabolites. Data Brief 2020; 32:106115. [PMID: 32904387 PMCID: PMC7452697 DOI: 10.1016/j.dib.2020.106115] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/23/2020] [Accepted: 07/27/2020] [Indexed: 11/25/2022] Open
Abstract
Canna edulis Ker rhizome has been used in Traditional Vietnamese Medicine to prevent and treat heart diseases without thorough scientific evidence. The data presented in this article characterize the antiplatelet aggregation, anticoagulant and antioxidant activity of C. edulis rhizome extracts and the bio-guided isolation of bioactive compounds from the active fraction. The data on tested bioactivities of isolated compounds were also provided. The inhibitory effect on adenosine diphosphate- and collagen-induced human platelet aggregation was evaluated through three parameters: percentage inhibition of platelet aggregation, aggregation velocity and area under the platelet aggregation curve. Prothrombin time, activated partial thromboplastine time and thrombine time were measured to examine the anticoagulant activity. The free radical scavenging ability was assessed with DPPH and ABTS assays. The structures of compounds were elucidated by NMR and MS spectroscopic methods. The data showed that the ethyl acetate fraction showed the most potent antiplatelet aggregation, anticoagulant and antioxidant activity. Seven known compounds: 5-hydroxy-6-methyl-2H-pyran-2-one (1), epimedokoreanone A (2), nepetoidin B (3), ferulic acid (4), caffeic acid (5), hydroxytyrosol (6), and 1H-indole-3-carboxaldehyde (7) were isolated from this active fraction. Moreover, this article provided experimental data on antiplatelet effect of epimedokoreanone A (2) and nepetoidine B (3), anticoagulant and antioxidant activity of epimedokoreanone A (2) and also antiplatelet and antioxidant activity of 5-hydroxy-6-methyl-2H-pyran-2-one (1).
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Affiliation(s)
- Thi Minh Hang Nguyen
- Center of Drug Research and Development, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Hong Luyen Le
- Department of Life Sciences, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | | | - Thi Thoa Ha
- Center of Drug Research and Development, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Bich Hau Bui
- Department of Life Sciences, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Nguyen Thanh Le
- Center of Drug Research and Development, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Van Hung Nguyen
- Center of Drug Research and Development, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Thi Van Anh Nguyen
- Department of Life Sciences, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
- Corresponding author.
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Ho KY, Cardosa MS, Chaiamnuay S, Hidayat R, Ho HQT, Kamil O, Mokhtar SA, Nakata K, Navarra SV, Nguyen VH, Pinzon R, Tsuruoka S, Yim HB, Choy E. Practice Advisory on the Appropriate Use of NSAIDs in Primary Care. J Pain Res 2020; 13:1925-1939. [PMID: 32821151 PMCID: PMC7422842 DOI: 10.2147/jpr.s247781] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 06/24/2020] [Indexed: 12/14/2022] Open
Abstract
Cyclo-oxygenase (COX)-2 selective and nonselective nonsteroidal anti-inflammatory drugs (NSAIDs) are important in managing acute and chronic pain secondary to inflammation. As a greater understanding of the risks of gastrointestinal (GI), cardiovascular (CV) and renal events with NSAIDs use has emerged, guidelines have evolved to reflect differences in risks among NSAIDs. Updated guidelines have yet to reflect new evidence from recent trials which showed similar CV event rates with celecoxib compared to naproxen and ibuprofen, and significantly better GI tolerability for celecoxib. This practice advisory paper aims to present consensus statements and associated guidance regarding appropriate NSAID use based on a review of current evidence by a multidisciplinary group of expert clinicians. This paper is especially intended to guide primary care practitioners within Asia in the appropriate use of NSAIDs in primary care. Following a literature review, group members used a modified Delphi consensus process to determine agreement with selected recommendations. Agreement with a statement by 75% of total voting members was defined a priori as consensus. For low GI risk patients, any nonselective NSAID plus proton pump inhibitor (PPI) or celecoxib alone is acceptable treatment when CV risk is low; for high CV risk patients, low-dose celecoxib or naproxen plus PPI is appropriate. For high GI risk patients, celecoxib plus PPI is acceptable for low CV risk patients; low-dose celecoxib plus PPI is appropriate for high CV risk patients, with the alternative to avoid NSAIDs and consider opioids instead. Appropriate NSAID prescription assumes that the patient has normal renal function at commencement, with ongoing monitoring recommended. In conclusion, appropriate NSAID use requires consideration of all risks.
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Affiliation(s)
- Kok Yuen Ho
- The Pain Clinic, Mt Alvernia Hospital, Singapore
| | | | - Sumapa Chaiamnuay
- Rheumatic Disease Unit, Phramongkutklao Hospital and College of Medicine, Bangkok, Thailand
| | - Rudy Hidayat
- Rheumatology Division, Department of Internal Medicine, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusomo Hospital, Jakarta, Indonesia
| | | | - Ozlan Kamil
- Gleneagles Hospital, Kuala Lumpur, Malaysia.,Prince Court Medical Center, Kuala Lumpur, Malaysia
| | - Sabarul A Mokhtar
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Ken Nakata
- Department of Health and Sport Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Sandra V Navarra
- Section of Rheumatology, Department of Medicine, University of Santo Tomas, Manila, Philippines
| | - Van Hung Nguyen
- Department of Rheumatology, Bach Mai Hospital, Hanoi, Vietnam
| | - Rizaldy Pinzon
- Department of Neurology, Faculty of Medicine, Kristen Duta Wacana University, Bethesda Hospital, Yogyakarta, Indonesia
| | | | - Heng Boon Yim
- Mount Elizabeth Novena Hospital, Singapore.,Faculty of Medicine, National University of Singapore, Singapore
| | - Ernest Choy
- Institute of Infection and Immunity, Cardiff University School of Medicine, Cardiff, UK
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Zou B, Yeo YH, Nguyen VH, Cheung R, Ingelsson E, Nguyen MH. Prevalence, characteristics and mortality outcomes of obese, nonobese and lean NAFLD in the United States, 1999-2016. J Intern Med 2020; 288:139-151. [PMID: 32319718 DOI: 10.1111/joim.13069] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/08/2020] [Accepted: 03/27/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Updated prevalence and outcome data for nonobese NAFLD for the multi-ethnic US population is limited. OBJECTIVES We aimed to investigate the prevalence, clinical characteristics and mortality of obese and nonobese individuals with NAFLD in the United Sates. METHODS A retrospective study was conducted using the 1999-2016 NHANES databases. We determined hazard ratio stratified by obesity status in NAFLD individuals using Cox regression and log-rank test. RESULTS Overall NAFLD prevalence was 32.3%: 22.7% were obese and 9.6% were nonobese, with increasing trend over time for obese NAFLD, but not nonobese NAFLD. Amongst those with NAFLD, 29.7% (95% CI: 27.8%-31.7%) were nonobese, of which 13.6% had lean NAFLD. Nonobese NAFLD was more common in older (40.9% if ≥ 65 vs. 24.2% if < 65 years), male (34.0% vs. 24.2%) and foreign-born Asian people (39.8% vs. 11.4%) and uncommon in black (11.5% vs 30-35% in other ethnicities, P < 0.001). Metabolic comorbidities were common in nonobese NAFLD individuals who also had more advanced fibrosis. Nonobese NAFLD individuals had higher 15-year cumulative all-cause mortality (51.7%) than obese NAFLD (27.2%) and non-NAFLD (20.7%) (P < 0.001). However, DM and fibrosis, but neither obese nor nonobese NAFLD compared to non-NAFLD was independently associated with higher mortality. CONCLUSION Nonobese NAFLD makes up about one-third of the NAFLD in the United States (even higher in older, male and foreign-born individuals) and carries higher mortality than obese NAFLD. Screening for NAFLD should be considered in high-risk groups even in the absence of obesity.
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Affiliation(s)
- B Zou
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
| | - Y H Yeo
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
| | - V H Nguyen
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
| | - R Cheung
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA.,Division of Gastroenterology and Hepatology, Veterans Affairs Medical Center, Palo Alto, CA, USA
| | - E Ingelsson
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, USA.,Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA.,Stanford Diabetes Research Center, Stanford University, Stanford, CA, USA
| | - M H Nguyen
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, CA, USA
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Fox GJ, Nguyen VN, Dinh NS, Nghiem LPH, Le TNA, Nguyen TA, Nguyen BH, Nguyen HD, Tran NB, Nguyen TL, Le TN, Nguyen VH, Phan TL, Nguyen KC, Ho J, Pham DC, Britton WJ, Bestrashniy JRBM, Marks GB. Post-treatment Mortality Among Patients With Tuberculosis: A Prospective Cohort Study of 10 964 Patients in Vietnam. Clin Infect Dis 2020; 68:1359-1366. [PMID: 30202910 DOI: 10.1093/cid/ciy665] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 03/18/2018] [Accepted: 08/14/2018] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Tuberculosis is the leading infectious cause of death. Steep reductions in tuberculosis-related mortality are required to realize the World Health Organization's "End Tuberculosis Strategy." However, accurate mortality estimates are lacking in many countries, particularly following discharge from care. This study aimed to establish the mortality rate among patients with pulmonary tuberculosis in Vietnam and to quantify the excess mortality in this population. METHODS We conducted a prospective cohort study among adult patients treated for smear-positive pulmonary tuberculosis in 70 clinics across Vietnam. People living in the same households were recruited as controls. Participants were re-interviewed and their survival was established at least 2 years after their treatment with an 8-month standardized regimen. The presence of relapse was established by linking identifying data on patients and controls to clinic registries. Verbal autopsies were performed. The cumulative mortality among patients was compared to that among a control population, adjusting for age and gender. RESULTS We enrolled 10964 patients and 25707 household controls. Among enrolled tuberculosis patients, 9% of patients died within a median follow-up period of 2.9 years: 342 (3.1%) during treatment and 637 (5.8%) after discharge. The standardized mortality ratio was 4.0 (95% confidence interval 3.7-4.2) among patients with tuberculosis, compared to the control population. Tuberculosis was the likely cause of death for 44.7% of these deceased patients. CONCLUSIONS Patients treated for tuberculosis had a markedly elevated risk of death, particularly in the post-treatment period. Interventions to reduce tuberculosis mortality must enhance the early detection of drug-resistance, improve treatment effectiveness, and address non-communicable diseases.
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Affiliation(s)
- G J Fox
- Faculty of Medicine and Health, University of Sydney, Australia.,Woolcock Institute of Medical Research, Glebe, New South Wales, Australia
| | - V N Nguyen
- National Lung Hospital, Ba Dinh, Hanoi, Vietnam
| | - N S Dinh
- National Lung Hospital, Ba Dinh, Hanoi, Vietnam
| | - L P H Nghiem
- Woolcock Institute of Medical Research, Glebe, New South Wales, Australia
| | - T N A Le
- National Lung Hospital, Ba Dinh, Hanoi, Vietnam
| | - T A Nguyen
- Woolcock Institute of Medical Research, Glebe, New South Wales, Australia
| | - B H Nguyen
- National Lung Hospital, Ba Dinh, Hanoi, Vietnam.,Centre for Operational Research, International Union Against Tuberculosis and Lung Disease, Paris, France
| | - H D Nguyen
- Pham Ngoc Thach Hospital, Ho Chi Minh City, Vietnam
| | - N B Tran
- Woolcock Institute of Medical Research, Glebe, New South Wales, Australia
| | - T L Nguyen
- Woolcock Institute of Medical Research, Glebe, New South Wales, Australia
| | - T N Le
- Woolcock Institute of Medical Research, Glebe, New South Wales, Australia
| | - V H Nguyen
- Woolcock Institute of Medical Research, Glebe, New South Wales, Australia
| | - T L Phan
- Woolcock Institute of Medical Research, Glebe, New South Wales, Australia
| | - K C Nguyen
- National Lung Hospital, Ba Dinh, Hanoi, Vietnam.,Hanoi Medical University, Hanoi, Vietnam
| | - J Ho
- Faculty of Medicine and Health, University of Sydney, Australia
| | - D C Pham
- Woolcock Institute of Medical Research, Glebe, New South Wales, Australia
| | - W J Britton
- Faculty of Medicine and Health, University of Sydney, Australia.,Centenary Institute of Cancer Medicine and Cell Biology, University of Sydney, Camperdown, New South Wales, Australia
| | | | - G B Marks
- Woolcock Institute of Medical Research, Glebe, New South Wales, Australia.,South Western Sydney Clinical School, University of New South Wales, Kensington, New South Wales, Australia
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Nguyen VH, Vizzotti C, Uruena A, Giglio N, Magneres C, Richmond H. Cost-effectiveness of introducing an MF59-adjuvanted trivalent influenza vaccine for older adults in Argentina. Vaccine 2020; 38:3682-3689. [PMID: 32249017 DOI: 10.1016/j.vaccine.2020.02.081] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 02/08/2020] [Accepted: 02/27/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Influenza surveillance in Argentina reported influenza-like illness at a rate of 3500/100,000, a hospitalization rate of 15.5/100,000, and a death rate of 0.32/100,000 annually in adults aged over 65 years. The high burden of disease may be due to a combination of immunosenescence and the suboptimal clinical effectiveness of conventional, non-adjuvanted influenza vaccines in this age group. There is a clinical need for more effective influenza vaccines in this population. This study evaluated the cost-effectiveness of an MF59®-adjuvanted trivalent influenza vaccine (aTIV) in adults aged over 65 years in Argentina compared with the non-adjuvanted trivalent influenza vaccine (TIV) used under the current national vaccination policy. METHODS A decision tree cost-effectiveness model was developed to estimate the cost-effectiveness of switching from TIV to aTIV in Argentinian older adults. The model compared cost and health benefits of vaccination in one influenza season from the payer perspective. The main predictions included survival, quality-adjusted survival, and costs. Model inputs were sourced from Argentina or internationally where local data was considered inaccurate. Vaccine efficacy assumptions were extracted from recently published, peer-reviewed scientific literature. RESULTS Switching from TIV to aTIV would result in 170 deaths averted and 1310 incremental quality-adjusted life years (QALYs) gained. The incremental cost-effectiveness ratio per QALY was US $2660.59 from the payer perspective. In all sensitivity analyses, aTIV remained highly cost-effective. The probabilistic sensitivity analyses showed a 95% CI per QALY of US $113.74-7721.67. CONCLUSION Introducing an adjuvanted influenza vaccine in Argentina is potentially beneficial and cost-effective relative to the currently-used TIV through the reduction of disease burden and utilization of healthcare resources.
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Affiliation(s)
| | | | | | - Norberto Giglio
- Ricardo Gutierrez Children's Hospital, Buenos Aires, Argentina
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Nguyen TTH, Nguyen VH, Nguyen VH, Nguyen TL, Le VQ. Role of Baseline Albumin-Bilirubin Grade on Predict Overall Survival Among Sorafenib-Treated Patients With Hepatocellular Carcinoma in Vietnam. Cancer Control 2020; 26:1073274819865269. [PMID: 31364390 PMCID: PMC6669852 DOI: 10.1177/1073274819865269] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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] [Indexed: 01/01/2023] Open
Abstract
Introduction: Albumin-bilirubin (ALBI) grade has been recently used in evaluation of liver function and prognosis of patients with hepatocellular carcinoma (HCC). However, in Vietnam, the utility of ALBI grade in clinical setting has not been adequately investigated. Methods: This is a retrospective study of 110 patients with HCC treated with sorafenib from January 2010 to November 2018 at 2 tertiary hospitals in Vietnam. Prognostic value of ALBI grade was evaluated by Kaplan-Meier survival analysis and Cox proportional regression model. Results: Results showed that the majority of ALBI grade 1 were Child-Pugh level A (97.5%); ALBI grade 2 was seen in all Child-Pugh score groups of 5, 6, 7, ≥8, whereas ALBI grade 3 was mostly reported in Child-Pugh score ≥8 group (83.3%). Compared with ALBI grade 3, ALBI grade 1 reduced 66.4% risk of death (hazards ratio [HR] = 0.336, 95% confidence interval [CI]: 0.115-0.981; P = .046). Compared with ALBI grade 3, ALBI grade 2 reduced 67.3% risk of death (HR = 0.327, 95% CI: 0.122-0.875; P = .026). Albumin-bilirubin grade was an independent predictor of survival outcome. Conclusion: Baseline ALBI grade is a simple and objective approach in assessing liver functions of patients with HCC. Baseline ALBI grade is an independent predictor of survival in patients treated with sorafenib.
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Affiliation(s)
- Thi Thu Huong Nguyen
- 1 Department of Oncology, Hanoi Medical University, Hanoi, Vietnam.,2 Department of General Medical Oncology, Vietnam National Cancer Institute, Hanoi, Vietnam
| | - Van Hieu Nguyen
- 1 Department of Oncology, Hanoi Medical University, Hanoi, Vietnam
| | - Van Hung Nguyen
- 1 Department of Oncology, Hanoi Medical University, Hanoi, Vietnam
| | | | - Van Quang Le
- 1 Department of Oncology, Hanoi Medical University, Hanoi, Vietnam.,2 Department of General Medical Oncology, Vietnam National Cancer Institute, Hanoi, Vietnam
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Le VQ, Nguyen VH, Nguyen VH, Nguyen TL, Sudenga SL, Trinh LH, Nguyen VT, Nguyen TTH. Epidemiological Characteristics of Advanced Hepatocellular Carcinoma in the Northern Region of Vietnam. Cancer Control 2019; 26:1073274819862793. [PMID: 31290350 PMCID: PMC6620729 DOI: 10.1177/1073274819862793] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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] [Indexed: 01/08/2023] Open
Abstract
Epidemiological characteristics of hepatocellular carcinoma (HCC) in Southern Vietnam has been well reported as in Globocan 2018 while data from the North has still not been fully presented. Therefore, we conducted this retrospective descriptive study on 198 advanced HCC patients treated at 3 major hospitals in Northern Vietnam to describe demographic features, HCC risk factors, and correlation among them in patients with advanced HCC. This information will lead to prevention efforts and provide information for allocating funds for treatment. The median age at diagnosis was 57 years (range: 19-86) and the male/female ratio was 8.9/1. The proportions of hepatitis B virus (HBV) and hepatitis C virus (HCV) infection were 81.3% and 5.6%, respectively. Hepatitis C virus infection rate was significantly higher in patients <50 years old (12.5% vs 3.3%, P = .016). There was no significant difference in age or viral hepatitis infection status by gender. Only 7.6% of patients diagnosed with advanced HCC were asymptomatic. In conclusion, with the high rate of HBV infection among patients with advanced HCC, it is necessary for increasing prevention efforts in HBV screening. Furthermore, HCV infection should be noticed in patients with advanced HCC younger than 50 years old.
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Affiliation(s)
- Van Quang Le
- 1 Department of Oncology, Hanoi Medical University, Ton That Tung, Hanoi, Vietnam.,2 Department of Oncology and Palliative care, Hanoi Medical University Hospital, Ton That Tung, Hanoi, Vietnam
| | - Van Hieu Nguyen
- 1 Department of Oncology, Hanoi Medical University, Ton That Tung, Hanoi, Vietnam
| | - Van Hung Nguyen
- 1 Department of Oncology, Hanoi Medical University, Ton That Tung, Hanoi, Vietnam
| | - Thanh Long Nguyen
- 1 Department of Oncology, Hanoi Medical University, Ton That Tung, Hanoi, Vietnam
| | - Staci L Sudenga
- 3 Division of Epidemiology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Le Huy Trinh
- 1 Department of Oncology, Hanoi Medical University, Ton That Tung, Hanoi, Vietnam.,2 Department of Oncology and Palliative care, Hanoi Medical University Hospital, Ton That Tung, Hanoi, Vietnam
| | - Van Tung Nguyen
- 4 Department of General Medical Oncology, Quan Su Campus, Vietnam National Cancer Hospital, Quan Su, Hanoi, Vietnam
| | - Thi Thu Huong Nguyen
- 1 Department of Oncology, Hanoi Medical University, Ton That Tung, Hanoi, Vietnam.,4 Department of General Medical Oncology, Quan Su Campus, Vietnam National Cancer Hospital, Quan Su, Hanoi, Vietnam
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Atopkin DM, Besprozvannykh VV, Ha DN, Nguyen VH, Nguyen VT. New species and new genus of Pseudohaploporinae (Digenea): Pseudohaploporus pusitestis sp. n. and Parahaploporus elegantus n. g., sp. n. (Digenea: Pseudohaploporinae) from Vietnamese mullet fish. Parasitol Int 2019; 75:102023. [PMID: 31715266 DOI: 10.1016/j.parint.2019.102023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 11/04/2019] [Accepted: 11/07/2019] [Indexed: 11/17/2022]
Abstract
Two new species of Pseudohaploporinae, Pseudohaploporus pusitestis sp. n. and Parahaploporus elegantus n. g., sp. n., are described from intestines of the Vietnamese mullet fish Moolgarda seheli and Osteomugil cunnesius, respectively. Pseudohaploporus pusitestis sp. n. differs from two known Pseudohaploporus species, P. vietnamensis and P. planiliza, by the absence of a diverticulate hermaphroditic duct and muscular sphincters at the proximal end of the hermaphroditic sac. Metrically, P. pusitestis sp. n. is close to P. vietnamensis and differs from this species and from P. planilizum by lower maximum sizes of most parameters. Parahaploporus elegantus n. g., sp. differs from representatives of Pseudohaploporus by the presence of a single testis and the armament of hermaphroditic duct and is morphologically close to trematodes of the genus Haploporus. However, P. elegantus n. g differs from all known Haploporus species from mugilids of the Indo-West Pacific by the structure of the armament of the hermaphroditic duct and also by size of body, organs and eggs. The validity of designating two new species and a new genus of trematodes is supported by ITS and 28S rDNA sequence data. Phylogenetic reconstructions showed that the new trematodes belong to the Pseudohaploporinae, which formed a well-supported cluster within the monophyletic Haploporidae.
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Affiliation(s)
- D M Atopkin
- Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022 Vladivostok, Russia; Department of Cell Biology and Genetics, Far Eastern Federal University, 690051, Ajax-10 str, Vladivostok, Russia.
| | - V V Besprozvannykh
- Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022 Vladivostok, Russia
| | - D N Ha
- Institute of Ecology and Biological Resources, Vietnamese Academy of Sciences and Technology, Hanoi, Viet Nam
| | - V H Nguyen
- Institute of Ecology and Biological Resources, Vietnamese Academy of Sciences and Technology, Hanoi, Viet Nam
| | - V T Nguyen
- Hai Duong Medical Technical University, Hanoi, Viet Nam
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Morisot F, Nguyen VH, Montemont C, Maindron T, Muñoz-Rojas D, Mouis M, Langlet M, Ternon C. Al 2O 3, Al doped ZnO and SnO 2 encapsulation of randomly oriented ZnO nanowire networks for high performance and stable electrical devices. Nanotechnology 2019; 30:385202. [PMID: 31212261 DOI: 10.1088/1361-6528/ab2aa5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Two-dimensional randomly oriented nanowire (NW) networks, also called nanonets (NNs), have remarkable advantages including low-cost integration, good reproducibility and high sensitivity, which make them a promising material for electronic devices. With this work, we focus on the study of ZnO NNs as channel materials in field effect transistors (FETs). In our process, ZnO NWs were assembled in NNs by the liquid filtration method and were integrated in transistors, with the bottom-gate configuration, using simple technological steps. Non-encapsulated devices exhibited state of the art performances but their stability toward air exposure was poor. Using a proper encapsulation of the nanonets, with cheap, abundant and non-toxic oxides, we demonstrate our ability not only to stabilize their electrical properties, but also to enhance performance to values never reach before for ZnO NW-based transistors. Our best FETs exhibit a low Off-current while maintaining a very good On-current, which results in a I on/I off ratio exceeding 106 for a drain voltage of 5 V. The behavior of these ZnO NN-based FETs was studied for three different encapsulation materials, alumina (Al2O3), tin oxide (SnO2) and Al-doped ZnO (AZO). These results prove that ZnO NNs are highly promising materials for an easy and low-cost integration into FETs.
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Affiliation(s)
- F Morisot
- Univ. Grenoble Alpes, CNRS, Grenoble INP*, LMGP, F-38000 Grenoble, France. Univ. Grenoble Alpes, CNRS, Grenoble INP*, IMEP-LaHC, F-38000 Grenoble, France
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Do TQ, Truong BN, Mai HDT, Nguyen TL, Nguyen VH, Nguyen HD, Nguyen TD, Nguyen TC, Luong TV, Giang LT, Chau VM, Pham VC. New dianthramide and cinnamic ester glucosides from the roots of Aconitum carmichaelii. J Asian Nat Prod Res 2019; 21:507-515. [PMID: 29597834 DOI: 10.1080/10286020.2018.1454436] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 09/21/2017] [Accepted: 03/14/2018] [Indexed: 06/08/2023]
Abstract
Four new compounds N-salicyl-3-hydroxyanthranilic acid methyl ester (1), N-(2'-dehydroxysalicyl)-3-hydroxyanthranilic acid methyl ester (2), methyl-4-β-D-allopyranosyl-ferulate (3), and methyl-4-β-D-gulopyranosyl-cinnamate (4), along with six known compounds (5-10), were isolated from the roots of Aconitum carmichelii Debx. Their structures were elucidated on the basis of spectral data analysis, including 1D, 2D-NMR, and HR-ESI-MS. Compounds 1 and 2 showed the inhibition of nitric oxide (NO) production with IC50 values of 9.13 and 19.94 μM, respectively.
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Affiliation(s)
- Thi Quynh Do
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Bich Ngan Truong
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Huong Doan Thi Mai
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Thuy Linh Nguyen
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Van Hung Nguyen
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Hai Dang Nguyen
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Tien Dat Nguyen
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
- b Center for Research and Technology Transfer , VAST , Hanoi 100000 , Vietnam
| | - The Cuong Nguyen
- c Institute of Ecology and Biological Resources , VAST , Hanoi 100000 , Vietnam
| | - Trieu Vung Luong
- d Department of Agriculture and Rural Development of Ha Giang , Ha Giang 310000 , Vietnam
| | - Loc Thang Giang
- e Pho Bang Centre for Plant and Animal Varieties , Ha Giang 310000 , Vietnam
| | - Van Minh Chau
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
| | - Van Cuong Pham
- a Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , Hanoi 100000 , Vietnam
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Nguyen TNT, Ha DV, Do TNN, Nguyen VH, Ngo XT, Phan VH, Nguyen ND, Bui QH. Air pollution monitoring network using low-cost sensors, a case study in Hanoi, Vietnam. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1755-1315/266/1/012017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Maß TWW, Nguyen VH, Schnakenberg U, Taubner T. Tailoring grating strip widths for optimizing infrared absorption signals of an adsorbed molecular monolayer. Opt Express 2019; 27:10524-10532. [PMID: 31052910 DOI: 10.1364/oe.27.010524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
Metal structures with resonances in the mid-infrared spectral range enable an increased sensitivity for detecting molecular vibrational signals. 1D gold strip gratings have already proven potential in surface-enhanced infrared absorption (SEIRA) experiments, as grating resonances and local electric field enhancement can be spectrally tuned by changing the grating period. Here, we identify the grating strip width as another important design parameter, which is investigated for further optimization of molecular absorption signal enhancement in SEIRA experiments. Previous literature used gratings to increase light absorption in relatively thick polymer layers. Here, we demonstrate the capability of gold strip gratings fabricated on a CaF2 substrate to enhance the CH2 vibrational modes of a thiol-based monolayer of MHDA. An optimal choice of the strip width w = 1.33 μm enables a maximum vibrational signal enhancement factor of around 84, when normalized to microscopic GIR measurements of an MHDA monolayer on an extended gold surface. Numerical simulations demonstrate the broadband local field enhancement of gold strip gratings, which are suitable for enhancing multiple vibrational modes in a large hot-spot volume.
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Doan Thi Thuy A, Trinh Thi Thanh V, Doan Thi Mai H, Le HT, Litaudon M, Nguyen VH, Chau VM, Pham VC. Cytotoxic Alkaloids from Leaves of Pilea aff. martinii. Planta Med 2019; 85:496-502. [PMID: 30791057 DOI: 10.1055/a-0826-0483] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Two new phenanthroquinolizidine alkaloids (1: and 2: ) and a new piperidine derivative (3: ) were isolated from the leaves of Pilea aff. martinii together with 3 known alkaloids: julandine (4: ), cryptopleurine (5: ), and 1,3,6,6-tetramethyl-5,6,7,8-tetrahydro-isoquinolin-8-one (6: ). Their structures were determined by spectral data analyses including mass spectrometry and 2-dimensional nuclear magnetic resonance data. The absolute configurations of 1: -3: were established by comparison of their experimental circular dichroism data with the calculated electronic circular dichroism spectra. The isolated compounds were evaluated for their cytotoxicity against 4 cancer cell lines: KB (mouth epidermal carcinoma cells), HepG-2 (human liver hepatocellular carcinoma cells), LU-1 (human lung adenocarcinoma cells), and MCF-7 (human breast cancer cells). The new phenanthroquinolizidine pileamartine D (2: ) showed strong and selective proliferation inhibition toward KB and HepG-2 cells with IC50 values of 25 and 27 nM, respectively. Pileamartine C (1: ), julandine (4: ), and cryptopleurine (5: ) exhibited cytotoxicity against 4 tested cancer cell lines with IC50 values less than 1 µM.
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Affiliation(s)
- Ai Doan Thi Thuy
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- National University of Agriculture, Trau Quy, Hanoi, Vietnam
| | - Van Trinh Thi Thanh
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Huyen Tram Le
- Hanoi University of Science and Technology (HUST), Hanoi, Vietnam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Université Paris-Sud, Paris, France
| | - Van Hung Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
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Nguyen VH, Kalal M, Suk H, Janulewicz KA. Interferometric analysis of sub-nanosecond laser-induced optical breakdown dynamics in the bulk of fused-silica glass. Opt Express 2018; 26:14999-15008. [PMID: 30114753 DOI: 10.1364/oe.26.014999] [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] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/05/2018] [Indexed: 06/08/2023]
Abstract
Dynamics of laser-induced optical breakdown in the bulk of fused-silica glass irradiated by a sub-nanosecond laser pulse at a wavelength of 790 nm with a fluence of 522 J/cm2 was studied by the femtosecond time-resolved complex interferometry in Nomarski arrangement utilising a Fresnel bi-prism. Evolution of the plasma channel and the development of the free electron density were in focus of the investigation. The measured ultimate length of the plasma channel was equal to 30 μm and almost doubled the length estimated within the moving breakdown model. The history of the transient electron density distribution in the plasma was reconstructed from the phase shift maps using the inverse Abel transform and it revealed further deviation from this model. The core of the plasma channel exhibited at the last stages of the development a considerable level of the electron density up to 2.4×1020 cm-3. The signature of the pre-breakdown phase has been identified as radiation caused by ionization-released electrons interacting with ions and has been demonstrated in solids for the first time in this way. Origin of the discrepancy between the theoretical prediction of the moving breakdown model and the measured values of the channel length is discussed as well.
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Affiliation(s)
- V H Nguyen
- Public Health Program, Department of Health Sciences, School of Health Professions, University of Missouri, Columbia, MO, USA.
- Community Health Program, Nursing Department, School of Natural Sciences & Mathematics, Columbia College of Missouri, Columbia, MO, USA.
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Trieu QH, Mai HDT, Litaudon M, Phi Thi D, Tran TA, Nguyen VH, Chau VM, Pham VC. Two new linear acetogenins from the fruits of Goniothalamus gracilipes. Nat Prod Res 2017; 32:287-293. [DOI: 10.1080/14786419.2017.1354189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Quy Hung Trieu
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
- Faculty of Natural Sciences, Hung Vuong University, Viettri, Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Marc Litaudon
- Département de Chimie des Substances Naturelles et Chimie Médicinale, Institut de Chimie des Substances Naturelles, Paris, France
| | - Dao Phi Thi
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Tuan Anh Tran
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Van Hung Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
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Nguyen TT, Truong BN, Doan Thi Mai H, Litaudon M, Nguyen VH, Do Thi T, Chau VM, Pham VC. Cytotoxic dammarane-type triterpenoids from the leaves of Viburnum sambucinum. Bioorg Med Chem Lett 2017; 27:1665-1669. [PMID: 28318944 DOI: 10.1016/j.bmcl.2017.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 02/17/2017] [Accepted: 03/06/2017] [Indexed: 11/30/2022]
Abstract
Four new dammarane-type triterpenoids (1-4) and twelve known compounds (5-16) were isolated from the leaves of Viburnum sambucinum Reinw. ex Blume. Their structures were determined by spectral data analysis, including MS and 2D NMR. Cytotoxic activity evaluation in vitro against four cancer cell lines (KB, LU-1, HepG2 and MCF7) suggested that the octanor-dammarane derivatives were the main cytotoxic components of the leaves of V. sambucinum.
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Affiliation(s)
- Thanh Tra Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam; Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Bich Ngan Truong
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam.
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Univ. Paris-Sud, 91198 Gif-sur-Yvette, France
| | - Van Hung Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Thao Do Thi
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam.
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Zhang HJ, Rumschlag-Booms E, Guan YF, Liu KL, Wang DY, Li WF, Nguyen VH, Cuong NM, Soejarto DD, Fong HHS, Rong L. Anti-HIV diphyllin glycosides from Justicia gendarussa. Phytochemistry 2017; 136:94-100. [PMID: 28110956 DOI: 10.1016/j.phytochem.2017.01.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [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: 10/15/2016] [Revised: 01/08/2017] [Accepted: 01/12/2017] [Indexed: 05/21/2023]
Abstract
In a search for new anti-HIV active leads from over several thousands of plant extracts, we have identified a potent plant lead. The active plant is determined as Justicia gendarussa (Acanthaceae), a medicinal plant that has been used for the treatment of injury, arthritis and rheumatism in Asia including China. Our bioassay-guided fractionation of the methanol extract of the stems and barks of the plant led to the isolation of two anti-HIV compounds, justiprocumins A and B. The compounds are identified as new arylnaphthalide lignans (ANL) glycosides. We further determined that the ANL glycosides are the chemical constituents that contribute to the anti-HIV activity of this plant. Justiprocumin B displayed potent activity against a broad spectrum of HIV strains with IC50 values in the range of 15-21 nM (AZT, IC50 77-95 nM). The compound also displayed potent inhibitory activity against the NRTI (nucleoside reverse transcriptase inhibitor)-resistant isolate (HIV-11617-1) of the analogue (AZT) as well as the NNRTI (non-nucleoside reverse transcriptase inhibitor)-resistant isolate (HIV-1N119) of the analogue (nevaripine).
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Affiliation(s)
- Hong-Jie Zhang
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Hong Kong Special Administrative Region.
| | - Emily Rumschlag-Booms
- Department of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, 835 South Wolcott Avenue, Chicago, IL 60612, USA
| | - Yi-Fu Guan
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Hong Kong Special Administrative Region
| | - Kang-Lun Liu
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Hong Kong Special Administrative Region
| | - Dong-Ying Wang
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Hong Kong Special Administrative Region
| | - Wan-Fei Li
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Hong Kong Special Administrative Region
| | - Van Hung Nguyen
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet road, Cau Giay, Hanoi, Viet Nam
| | | | - Djaja Doel Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
| | - Harry H S Fong
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
| | - Lijun Rong
- Department of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, 835 South Wolcott Avenue, Chicago, IL 60612, USA.
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47
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Tran DT, Mai HDT, Tran HG, Truong BN, Litaudon M, Nguyen VH, Chau VM, Van CP. Two new sesquiterpenes from the fruits of Fissistigma villosissimum. J Asian Nat Prod Res 2017; 19:235-240. [PMID: 27324457 DOI: 10.1080/10286020.2016.1196195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 02/23/2016] [Accepted: 05/26/2016] [Indexed: 06/06/2023]
Abstract
Two new sesquiterpenes, namely fissistinone (1) and fissistinol (2), along with ten known compounds (3-12), were isolated from the fruits of Fissistigma villosissimum. Their structures were elucidated on the basis of spectral data analysis, including one-dimensional (1D), two-dimensional (2D)-nuclear magnetic resonance (NMR), and high-resolution-electrospray ionization-mass spectrometry (HR-ESI-MS). Compounds 1-8 were evaluated for their cytotoxic activities against KB cell line; however, all these compounds did not show cytotoxic activity.
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Affiliation(s)
- Dang Thach Tran
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
- c Faculty of Technology , Industrial University of Vinh , Vinh , Vietnam
| | - Huong Doan Thi Mai
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Huu Giap Tran
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Bich Ngan Truong
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Marc Litaudon
- b Département de Chimie des Substances Naturelles et Chimie Médicinale , Institut de Chimie des Substances Naturelles , Gif-sur-Yvette Cedex 91190 , France
| | - Van Hung Nguyen
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Van Minh Chau
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
| | - Cuong Pham Van
- a Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry , Vietnam Academy of Science and Technology (VAST) , Hanoi 844 , Vietnam
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Nguyen TT, Truong BN, Mai HDT, Litaudon M, Nguyen VH, Thi TD, Tran VH, Tran DT, Chau VM, Pham VC. New Cyclopentyl Fatty Acid and Cyanohydrin Glycosides from Fruits of Hydnocarpus hainanensis. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200228] [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: 11/16/2022] Open
Abstract
Three new compounds, hydnohainanic acid (1), and hydnohainanin A (2) and B (3) were isolated from the fruits of Hydnocarpus hainanensis (Achariaceae). Their structures were determined by spectroscopic analysis, including 2D NMR, and MS. Compounds 1-3 were evaluated for their cytotoxic activity against the KB cell line. Compound 1 had a moderate cytotoxicity with an IC50 value of 32.5 μg/mL, while the two remaining compounds did not exhibit inhibition, even at a concentration of 128 μg/mL.
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Affiliation(s)
- Thanh Tra Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
- Institute of Chemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Bich Ngan Truong
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Marc Litaudon
- Institut de Chimie des Substances Naturelles, CNRS-ICSN, UPR 2301, Univ. Paris-Sud, 91198, Gif-sur-Yvette, France
| | - Van Hung Nguyen
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Thao Do Thi
- Institute of Biotechnology, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Hieu Tran
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Dang Thach Tran
- Industrial University of Vinh, 26 Nguyen Thai Hoc, Vinh, Nghe-An, Vietnam
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, VAST, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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Lacasse Y, Bernard S, Sériès F, Nguyen VH, Bourbeau J, Aaron S, Maltais F. Multi-center, randomized, placebo-controlled trial of nocturnal oxygen therapy in chronic obstructive pulmonary disease: a study protocol for the INOX trial. BMC Pulm Med 2017; 17:8. [PMID: 28069009 PMCID: PMC5223547 DOI: 10.1186/s12890-016-0343-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [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: 10/26/2016] [Accepted: 12/08/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Long-term oxygen therapy (LTOT) is the only component of the management of chronic obstructive pulmonary disease (COPD) that improves survival in patients with severe daytime hypoxemia. LTOT is usually provided by a stationary oxygen concentrator and is recommended to be used for at least 15-18 h a day. Several studies have demonstrated a deterioration in arterial blood gas pressures and oxygen saturation during sleep in patients with COPD, even in those not qualifying for LTOT. The suggestion has been made that the natural progression of COPD to its end stages of chronic pulmonary hypertension, severe hypoxemia, right heart failure, and death is dependent upon the severity of desaturation occurring during sleep. The primary objective of the International Nocturnal Oxygen (INOX) trial is to determine, in patients with COPD not qualifying for LTOT but who present significant nocturnal arterial oxygen desaturation, whether nocturnal oxygen provided for a period of 3 years decreases mortality or delay the prescription of LTOT. METHODS The INOX trial is a 3-year, multi-center, placebo-controlled, randomized trial of nocturnal oxygen therapy added to usual care. Eligible patients are those with a diagnosis of COPD supported by a history of past smoking and obstructive disease who fulfill our definition of significant nocturnal oxygen desaturation (i.e., ≥ 30% of the recording time with transcutaneous arterial oxygen saturation < 90% on either of two consecutive recordings). Patients allocated in the control group receive room air delivered by a concentrator modified to deliver 21% oxygen. The comparison is double blind. The primary outcome is a composite of mortality from all cause or requirement for LTOT. Secondary outcomes include quality of life and utility measures, costs from a societal perspective and compliance with oxygen therapy. The follow-up period is intended to last at least 3 years. DISCUSSION The benefits of LTOT have been demonstrated whereas those of nocturnal oxygen therapy alone have not. The INOX trial will likely determine whether supplemental oxygen during sleep is effective in reducing mortality, delaying the need for LTOT and improving health-related quality of life in patients with COPD who desaturate overnight. TRIAL REGISTRATION Current Controlled Trials ISRCTN50085100 ; ClinicalTrials.gov NCT01044628 (date of registration: January 6, 2010).
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Affiliation(s)
- Yves Lacasse
- Centre de recherche, Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ), 2725 Chemin Ste-Foy, Québec, Québec, G1V 4G5, Canada.
| | - Sarah Bernard
- Centre de recherche, Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ), 2725 Chemin Ste-Foy, Québec, Québec, G1V 4G5, Canada
| | - Frédéric Sériès
- Centre de recherche, Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ), 2725 Chemin Ste-Foy, Québec, Québec, G1V 4G5, Canada
| | - Van Hung Nguyen
- Centre de recherche, Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ), 2725 Chemin Ste-Foy, Québec, Québec, G1V 4G5, Canada
| | - Jean Bourbeau
- Institut thoracique de Montréal, 3650 rue St-Urbain, Montréal, Québec, H2X 2P4, Canada
| | - Shawn Aaron
- The Ottawa Hospital - General Campus, Mailbox 211, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
| | - François Maltais
- Centre de recherche, Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ), 2725 Chemin Ste-Foy, Québec, Québec, G1V 4G5, Canada
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Nguyen Le T, Bikram Khadka D, Huu Tran G, Anh Nguyen D, Jin Y, Thi My Van H, Hung Nguyen V, Cho WJ. Synthesis and Anticancer Activity of 2-Aryl-6-diethylaminoquinazolinone Derivatives. LETT DRUG DES DISCOV 2016. [DOI: 10.2174/1570180813666160125222936] [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: 11/22/2022]
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