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Ha MT, Gal M, Kim JA, Lee JH, Min BS. Sucrosephenylpropanoid esters and isoflavonoids isolated from Belamcanda chinensis roots and their potential anti-osteoclastogenic activity. Bioorg Chem 2024; 143:107066. [PMID: 38185009 DOI: 10.1016/j.bioorg.2023.107066] [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: 10/19/2023] [Revised: 12/20/2023] [Accepted: 12/23/2023] [Indexed: 01/09/2024]
Abstract
Repeated chromatography of the CH2Cl2 and EtOAc soluble fractions from the methanol extract of Belamcanda chinensis root yielded six new sucrosephenylpropanoid esters (1-6) and twenty-one known compounds (7-27). The structures of 1-6 were elucidated using diverse nuclear magnetic resonance (NMR) techniques and high-resolution mass spectrometry (HRMS) data analysis, together with chemical methods. All the twenty-seven isolated compounds were evaluated for their anti-osteoclastogenic activities. Preliminary screening results revealed that compounds 1 and 19 exhibited strong effects against RANKL-induced osteoclast formation in RAW264.7 cells. In addition, the treatment of mouse bone marrow macrophages (BMMs) with compounds 1 and 19 significantly decreased RANKL-induced TRAP-positive multinucleated osteoclast formation in a concentration-dependent manner without affecting cell viability. Further bioassay investigation showed that compounds 1 and 19 inhibited the expression of some osteoclast-specific marker genes and the transcription factor nuclear factor of activated T cells cytoplasmic 1 (NFATc1) in response to RANKL. To the best of our knowledge, this is the first investigation of anti-osteoclastogenic activity for compounds isolated from B. chinensis.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Minju Gal
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24341, South Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jeong-Hyung Lee
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24341, South Korea.
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea.
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Van HT, Tran VT, Ha MT, Vu QH. Model of implementing proficiency testing in Vietnam, a developing country. Pract Lab Med 2023; 37:e00339. [PMID: 37886110 PMCID: PMC10598689 DOI: 10.1016/j.plabm.2023.e00339] [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: 08/21/2023] [Revised: 09/24/2023] [Accepted: 09/24/2023] [Indexed: 10/28/2023] Open
Abstract
Backgrounds and aims The aim of this study is to provide a good approach for a quantitative EQA scheme assigned value with limited resources. Materials and methods Twelve lyophilized EQA items were distributed to participants in 2021 from North to Southeast Vietnam to measure the concentration of nine parameters, including glucose, urea, creatinine, cholesterol, triglyceride, uric acid, AST, ALT, and GGT. The consensus value of the expert group and all participants were calculated and statistically compared to choose the most appropriate consensus value. Results Fifty-nine laboratories attended the EQA scheme, including an expert group using automatic biochemistry analyzers (AAs) and all participants with auto and semi-auto biochemistry (SAA) analyzers. Consensus values of six per nine parameters were different between the two groups for at least two EQA items, including glucose, creatinine, cholesterol, uric acid, AST, and ALT. The coefficients of variation of glucose, urea, creatinine, triglycerides, uric acid, and GGT in the expert group were significantly lower than those in all the participants. Conclusion Using the consensus values of expert groups as the assigned values of the EQA program is a relevant strategy to increase testing quality in developing countries with limited resources, such as Vietnam.
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Affiliation(s)
- Hy Triet Van
- University of Medicine and Pharmacy at Ho Chi Minh City, Viet Nam
- University Medical Center Ho Chi Minh City, Viet Nam
- Quality Control Center for Medical Laboratory Under Ministry of Health, University of Medicine and Pharmacy at Ho Chi Minh City, Viet Nam
| | - Van Thanh Tran
- University of Medicine and Pharmacy at Ho Chi Minh City, Viet Nam
- GIC Center, University of Medicine and Pharmacy at Ho Chi Minh City, Viet Nam
| | - Manh Tuan Ha
- University of Medicine and Pharmacy at Ho Chi Minh City, Viet Nam
- University Medical Center Ho Chi Minh City, Viet Nam
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Le TT, Ha MT, Cao TQ, Kim JA, Choi JS, Min BS. 1,5-Anhydro-d-glucitol derivative and galloylated flavonoids isolated from the leaves of Acer ginnala Maxim. as dual inhibitors of PTP1B and α-glucosidase enzymes: In vitro and in silico studies. Phytochemistry 2023:113769. [PMID: 37343738 DOI: 10.1016/j.phytochem.2023.113769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 05/23/2023] [Accepted: 06/12/2023] [Indexed: 06/23/2023]
Abstract
Four undescribed compounds (two 1,5-anhydro-d-glucitol derivatives and two galloyl derivatives) and fourteen known compounds were isolated and structurally identified from leaves of Acer ginnala Maxim. (Amur maple). Structures and absolute configurations of the four undescribed compounds were determined using extensive analysis of NMR spectroscopic, HRESI-MS, modified Mosher ester method, and comparison with spectroscopic data of known compounds. Bioactivity evaluation revealed that the isolated 1,5-anhydro-d-glucitol derivative, galloylated flavonol rhamnosides, and galloylated flavanols had inhibitory effects on both protein tyrosine phosphatase-1B (PTP1B, IC50 values ranging of 3.46-12.65 μM) and α-glucosidase (IC50 values ranging of 0.88-6.06 μM) in comparison with a positive control for PTP1B (ursolic acid, IC50 = 5.10 μM) or α-glucosidase (acarbose, IC50 = 141.62 μM). A combination of enzyme kinetic analysis and molecular docking provided additional evidence in favor of their inhibitory activities and mechanism. These data demonstrate that A. ginnala Maxim. together with its constituents are promising sources of potent candidates for developing novel anti-diabetic medications.
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Affiliation(s)
- Thi Thanh Le
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea.
| | - Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea
| | - Thao Quyen Cao
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, 41566, South Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan, 48513, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea.
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Vu NK, Ha MT, Ha YJ, Kim CS, Gal M, Ngo QMT, Kim JA, Woo MH, Lee JH, Min BS. Structures and antiosteoclastogenic activity of compounds isolated from edible lotus (Nelumbo nucifera Gaertn.) leaves and stems. Fitoterapia 2022; 162:105294. [PMID: 36058474 DOI: 10.1016/j.fitote.2022.105294] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/29/2022] [Accepted: 08/29/2022] [Indexed: 12/01/2022]
Abstract
One new 1,4-bis-phenyl-1,4-butanedione glycoside (14), one new eudesmane-type sesquiterpenoid (16), and 16 known compounds were isolated from the leaves and stems of Nelumbo nucifera Gaertn. The structures of the isolated compounds were elucidated by interpretation of their 1D and 2D NMR spectroscopic and HRESIMS data. Time-dependent density functional theory calculations and Electronic Circular Dichroism (ECD) spectroscopy was used to determine absolute configurations of the new eudesmane-type sesquiterpenoid (16). All the isolated compounds were examined for their antiosteoclastogenic activity. Preliminarily results of the TRAP staining on RAW 264.7 cells indicated that compounds 1 and 11 possess potential inhibitory effects on RANKL-induced osteoclast formation. Further bioassay investigation was carried out to reveal that compounds 1 and 11 suppressed RANKL-induced osteoclast formation in a concentration-dependent manner with the inhibition up to 55% and 78% at the concentration of 10 μM, respectively. In addition, the structure-activity relationship analysis showed that the 1,3-dioxole substitute and the double bond at C-6a/C-7 in the aporphine skeleton may be responsible for the antiosteoclastogenic activity. The findings provided valuable insights for the discovery and structural modification of aporphine alkaloids as the antiosteoclastogenic lead compounds.
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Affiliation(s)
- Ngoc Khanh Vu
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Young Jun Ha
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Chung Sub Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea; Department of Biopharmaceutical Convergence, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Minju Gal
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24341, Republic of Korea
| | - Quynh-Mai Thi Ngo
- College of Pharmacy, Hai Phong University of Medicine and Pharmacy, 72A Nguyen Binh Khiem, Hai Phong 180000, Viet Nam
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Mi Hee Woo
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Jeong-Hyung Lee
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24341, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea.
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Thanh Le T, Tuan Ha M, Han KH, Kim YB, Ah Kim J, Sun Min B. Anti-Inflammatory Lignans from the Roots of Asarum heterotropoides var. mandshuricum and Their Mechanism of Action. Chem Biodivers 2022; 19:e202100986. [PMID: 35502747 DOI: 10.1002/cbdv.202100986] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 05/02/2022] [Indexed: 11/09/2022]
Abstract
Bioassay-guided fractionation of Asarum heterotropoides var. mandshuricum F. Maekawa (Aristolochiaceae) root extract led to the isolation and characterization of one new ferulic acid glucose ester (1) and nine known lignans (2-10). Their structures were elucidated using extensive spectroscopic methods, including 1D and 2D NMR, and MS spectra. The anti-inflammatory effects of the isolated compounds were investigated via their inhibition against nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW264.7 mouse macrophage cells. Among them, compound 7 ((1R,2S,5R,6R)-5'-O-methylpluviatilol) showed the most effective inhibitory activity against NO production and expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) protein in an exceedingly dose-dependent manner. In addition, further study revealed that the mechanism of anti-inflammatory activity of the most active lignan (7) might be associated with the inhibition of extracellular-signal-regulated kinase (ERK) and nuclear factor kappa B (NF-κB) phosphorylation.
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Affiliation(s)
- Thi Thanh Le
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea
| | - Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea
| | - Kang-Hyun Han
- Korea Institute of Toxicology, Daejeon, 34114, Republic of Korea
| | - Yong-Bum Kim
- Korea Institute of Toxicology, Daejeon, 34114, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea
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Ha MT, Lee TH, Kim CS, Prajapati R, Kim JA, Choi JS, Min BS. PTP1B and α-glucosidase inhibitory activities of the chemical constituents from Hedera rhombea fruits: Kinetic analysis and molecular docking simulation. Phytochemistry 2022; 197:113100. [PMID: 35144153 DOI: 10.1016/j.phytochem.2022.113100] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 11/05/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
In this study, we present the first investigation of Hedera rhombea Bean fruit, which led to the isolation of six undescribed compounds including two megastigmane glucosides, two rare 1,4-dioxane neolignanes, and two quinic acid derivatives, together with 26 known compounds. Their structures and absolute configurations were elucidated by extensive analysis of NMR spectroscopic data, HRMS, and ECD calculations. This is the first report on the isolation of methyl 3-O-caffeoyl-5-O-p-coumaroylquinate from a natural source. Among the isolated compounds, falcarindiol and caffeoyltryptophan showed significant PTP1B inhibition with IC50 values of 7.32 and 16.99 μM, respectively, compared to those of the positive controls [sodium orthovanadate (IC50 = 17.96 μM) and ursolic acid (IC50 = 4.53 μM)]. These two compounds along with several other compounds displayed significant α-glucosidase inhibitions with IC50 values ranging from 12.88 to 91.89 μM, stronger than that of the positive control (acarbose, IC50 = 298.07 μM). Enzyme kinetic analysis indicated that caffeoyltryptophan and falcarindiol displayed competitive and mixed-type PTP1B inhibition, respectively, whereas the α-glucosidase inhibition type was mixed-type for caffeoyltryptophan and uncompetitive (rarely reported for a-glucosidase inhibitors) for falcarindiol. In addition, molecular docking results showed that these active compounds exhibited good binding affinities toward both PTP1B and α-glucosidase with negative binding energies. The results of the present study demonstrate that these active compounds might be beneficial in the treatment of type 2 diabetes.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea
| | - Tae Hyun Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Department of Biopharmaceutical Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Chung Sub Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Department of Biopharmaceutical Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Ritu Prajapati
- Department of Food and Life Science, Pukyong National University, Busan, 48513, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan, 48513, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea.
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Ha MT, Tran PT, Tran HNK, Kim O, Kim JA, Lee JH, Min BS. Anti-osteoclastogenic Effects of Indole Alkaloids Isolated from Barley ( Hordeum vulgare Var. Hexastichon) Grass. J Agric Food Chem 2021; 69:12994-13005. [PMID: 34694780 DOI: 10.1021/acs.jafc.1c04337] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As part of our continuous program to identify new potential candidates for controlling osteolytic bone diseases from natural products, the alkaloid fraction of barley (Hordeum vulgare var. hexastichon) grass (HVA) significantly inhibited RANKL-induced osteoclast formation and protected mice from LPS-induced bone loss. A phytochemical investigation of HVA afforded nine indole alkaloids, including one new compound [hordeumin A (1)] and eight known analogues (2-9). Of them, four (1, 2, 4, and 5) were anti-osteoclastogenic compounds. Of these four, compound 5 significantly suppressed RANKL-induced osteoclast formation, actin ring formation, and bone resorption in a concentration-dependent manner. It also suppressed the RANKL-induced NF-κB and MAPK signaling pathways and the activation of c-Fos and NFATc1. Compound 5 also reduced the expression levels of osteoclast-specific marker genes, including TRAP, CtsK, DC-STAMP, OSCAR, and MMP9. Our findings suggest that HVA and its alkaloid constituents could be valuable candidates for the prevention and treatment of osteolytic bone diseases.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Phuong Thao Tran
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24341, Republic of Korea
| | - Huynh Nguyen Khanh Tran
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Okwha Kim
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24341, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jeong-Hyung Lee
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24341, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
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Ha MT, Ho TAT, Nguyen AN, Nguyen TA. Characteristics of severe malaria in hospitalized children in Ho Chi Minh City from 2012 to 2019. Trop Biomed 2021; 38:371-376. [PMID: 34508346 DOI: 10.47665/tb.38.3.082] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In Vietnam, severe malaria is currently rare but is a life-threatening disease. It may be misdiagnosed with other common diseases. This descriptive study aimed to characterize severe malaria and its clinical aspects, as well as outcomes of infected pediatric patients to improve case management. The case-series study was carried out based on medical records of children aged between one month and 15 years with malaria diagnosed by blood smear or rapid diagnostic test. Chi-squared test with the p values less than 0.05 were considered statistically significant. There were 47 cases enrolled in the study. The prevalence of severe malaria was 29.8% (57.1% in children under five). The morbidity was 71.4% in male and 28.6% in female. Common clinical signs of severe malaria were fever (100%), severe anemia (21.4%), hepatomegaly (85.7%), and splenomegaly (71.4%). Common biological abnormalities in severe malaria were anemia, thrombocytopenia, increased liver enzymes, and high CRP level. The severe malaria was mainly caused by P. falciparum (100%). The age range for those infected with P. falciparum was 6.5 ± 4.5 years (min 0.3; max 14.9). The successful rate of treatment was 92.9% with artesunate. Antimalarial treatment time was 9.0 (6 - 12) days for severe malaria, which was twice as many as that for non-severe malaria (p = 0.067). The current clinical and biological findings of severe malaria are different from those in previous times, which make it easy to be overlooked. Therefore, it's important to perform malaria diagnostic tests when there're clinical suggestions of severe malaria, including fever, hepatomegaly or splenomegaly.
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Affiliation(s)
- M T Ha
- University of Medicine and Pharmacy at Ho Chi Minh City, 700000 Ho Chi Minh City, Vietnam
| | - T A T Ho
- Khanh Hoa General Hospital, Nha Trang City, 650000 Khanh Hoa Province, Vietnam
| | - A N Nguyen
- University of Medicine and Pharmacy at Ho Chi Minh City, 700000 Ho Chi Minh City, Vietnam
| | - T A Nguyen
- Molecular Biomedical Center, University Medical Center - Campus 2, 700000 Ho Chi Minh City, Vietnam
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Han AX, Felix Garza ZC, Welkers MRA, Vigeveno RM, Tran ND, Le TQM, Pham Quang T, Dang DT, Tran TNA, Ha MT, Nguyen TH, Le QT, Le TH, Hoang TBN, Chokephaibulkit K, Puthavathana P, Nguyen VVC, Nghiem MN, Nguyen VK, Dao TT, Tran TH, Wertheim HFL, Horby PW, Fox A, van Doorn HR, Eggink D, de Jong MD, Russell CA. Within-host evolutionary dynamics of seasonal and pandemic human influenza A viruses in young children. eLife 2021; 10:e68917. [PMID: 34342576 PMCID: PMC8382297 DOI: 10.7554/elife.68917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/02/2021] [Indexed: 01/14/2023] Open
Abstract
The evolution of influenza viruses is fundamentally shaped by within-host processes. However, the within-host evolutionary dynamics of influenza viruses remain incompletely understood, in part because most studies have focused on infections in healthy adults based on single timepoint data. Here, we analyzed the within-host evolution of 82 longitudinally sampled individuals, mostly young children, infected with A/H1N1pdm09 or A/H3N2 viruses between 2007 and 2009. For A/H1N1pdm09 infections during the 2009 pandemic, nonsynonymous minority variants were more prevalent than synonymous ones. For A/H3N2 viruses in young children, early infection was dominated by purifying selection. As these infections progressed, nonsynonymous variants typically increased in frequency even when within-host virus titers decreased. Unlike the short-lived infections of adults where de novo within-host variants are rare, longer infections in young children allow for the maintenance of virus diversity via mutation-selection balance creating potentially important opportunities for within-host virus evolution.
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Affiliation(s)
- Alvin X Han
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical CenterAmsterdamNetherlands
| | - Zandra C Felix Garza
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical CenterAmsterdamNetherlands
| | - Matthijs RA Welkers
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical CenterAmsterdamNetherlands
| | - René M Vigeveno
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical CenterAmsterdamNetherlands
| | - Nhu Duong Tran
- National Institute of Hygiene and EpidemiologyHanoiViet Nam
| | | | | | | | | | | | | | | | - Thanh Hai Le
- Vietnam National Children's HospitalHanoiViet Nam
| | | | | | | | | | | | | | | | - Tinh Hien Tran
- Siriraj Hospital, Mahidol UniversityBangkokThailand
- Oxford University Clinical Research UnitHo Chi Minh cityViet Nam
| | - Heiman FL Wertheim
- Oxford University Clinical Research UnitHo Chi Minh cityViet Nam
- Radboud Medical Centre, Radboud UniversityNijmegenNetherlands
- Nuffield Department of Medicine, University of OxfordOxfordUnited Kingdom
| | - Peter W Horby
- Nuffield Department of Medicine, University of OxfordOxfordUnited Kingdom
- Oxford University Clinical Research UnitHanoiViet Nam
| | - Annette Fox
- Oxford University Clinical Research UnitHanoiViet Nam
- Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneAustralia
- WHO Collaborating Centre for Reference and Research on InfluenzaMelbourneAustralia
| | - H Rogier van Doorn
- Nuffield Department of Medicine, University of OxfordOxfordUnited Kingdom
- Oxford University Clinical Research UnitHanoiViet Nam
| | - Dirk Eggink
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical CenterAmsterdamNetherlands
- Centre for Infectious Disease Control, National Institute for Public Health and the EnvironmentBilthovenNetherlands
| | - Menno D de Jong
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical CenterAmsterdamNetherlands
| | - Colin A Russell
- Department of Medical Microbiology & Infection Prevention, Amsterdam University Medical CenterAmsterdamNetherlands
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Vu NK, Ha MT, Kim CS, Gal M, Kim JA, Woo MH, Lee JH, Min BS. Structural characterization of prenylated compounds from Broussonetia kazinoki and their antiosteoclastogenic activity. Phytochemistry 2021; 188:112791. [PMID: 34082339 DOI: 10.1016/j.phytochem.2021.112791] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 04/12/2021] [Accepted: 04/17/2021] [Indexed: 06/12/2023]
Abstract
An undescribed 1,3-diphenylpropane derivative, kazinol V and six undescribed prenylated flavonoids, broussonols F-H and broussonols K-M were isolated from the roots of Broussonetia kazinoki Siebold, together with 12 known compounds. This is the first report of the isolation and structure determination of broussonol I from a natural source. The chemical structure of the undescribed compounds was determined using conventional NMR and HRMS data. Absolute configurations were assigned using time-dependent density functional theory calculations and Electronic Circular Dichroism (ECD) spectroscopy. The isolated compounds were screened for their effects on RANKL-induced osteoclast formation using RAW264.7 cells. Among them, broussonols F, G, and K showed strong, dose-dependent antiosteoclastogenic activities. Broussonol K exhibited the most potent inhibitory activity and possessed bone resorption suppressive activity.
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Affiliation(s)
- Ngoc Khanh Vu
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea
| | - Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea
| | - Chung Sub Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Department of Biopharmaceutical Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Minju Gal
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do, 24341, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Mi Hee Woo
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea
| | - Jeong-Hyung Lee
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do, 24341, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk, 38430, Republic of Korea.
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Phan TN, Kim O, Ha MT, Hwangbo C, Min BS, Lee JH. Albanol B from Mulberries Exerts Anti-Cancer Effect through Mitochondria ROS Production in Lung Cancer Cells and Suppresses In Vivo Tumor Growth. Int J Mol Sci 2020; 21:ijms21249502. [PMID: 33327489 PMCID: PMC7764986 DOI: 10.3390/ijms21249502] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/11/2020] [Accepted: 12/11/2020] [Indexed: 12/19/2022] Open
Abstract
Albanol B (ABN-B), an arylbenzofuran derivative isolated from mulberries, has been shown to have anti-Alzheimer’s disease, anti-bacterial and antioxidant activities. The aim of this study was to investigate the anti-cancer effect of this compound against lung cancer cells. The results show that ABN-B inhibited the proliferation of four human lung cancer cell lines (A549, BZR, H1975, and H226) and induced apoptosis, based on the cleavage of caspase-7 and PARP (poly (ADP-ribose) polymerase), as well as the downregulation of Bcl-2. ABN-B also induced cell cycle arrest at G2/M by down-regulating the expression of CKD1 (cyclin-dependent kinase 1) and cyclin B1, but up-regulating p21 (cyclin-dependent kinase inhibitor 1) expression. Notably, ABN-B increased the production of mitochondrial reactive oxygen species (ROS); however, treatment with mito-TEMPO (a specific mitochondrial antioxidant) blocked ABN-B-induced cell cycle arrest at G2/M and apoptosis, as well as the up-regulation of p21 and down-regulation of CDK1 and cyclin B1 induced by ABN-B. At the molecular level, ABN-B-induced mitochondrial ROS production increased the phosphorylation levels of AKT (protein kinase B) and ERK1/2 (extracellular signal-regulated kinase 1/2), while the inhibition of these kinases blocked the ABN-B-induced up-regulation of p21 and down-regulation of CDK1 and cyclin B1. Moreover, ABN-B significantly suppressed tumor growth in Ex-3LL (Lewis lung carcinoma) tumor-bearing mice. Taken together, these results suggest that ABN-B can exert an anti-cancer effect by inducing apoptosis and cell cycle arrest at G2/M through mitochondrial ROS production in lung cancer cells.
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Affiliation(s)
- Thanh Nam Phan
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24414, Korea; (T.N.P.); (O.K.)
| | - Okwha Kim
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24414, Korea; (T.N.P.); (O.K.)
| | - Manh Tuan Ha
- College of Pharmacy, Catholic University of Daegu, Gyeongbuk 38430, Korea; (M.T.H.); (B.-S.M.)
| | - Cheol Hwangbo
- Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea;
- Division of Life Science, College of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea
| | - Byung-Sun Min
- College of Pharmacy, Catholic University of Daegu, Gyeongbuk 38430, Korea; (M.T.H.); (B.-S.M.)
| | - Jeong-Hyung Lee
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24414, Korea; (T.N.P.); (O.K.)
- Correspondence: ; Tel.: +82-33-250-8519; Fax: +82-33-259-5664
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12
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Ha MT, Vu NK, Tran TH, Kim JA, Woo MH, Min BS. Phytochemical and pharmacological properties of Myristica fragrans Houtt.: an updated review. Arch Pharm Res 2020; 43:1067-1092. [DOI: 10.1007/s12272-020-01285-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 11/04/2020] [Indexed: 01/01/2023]
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13
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Ha MT, Shrestha S, Tran TH, Kim JA, Woo MH, Choi JS, Min BS. Inhibition of PTP1B by farnesylated 2-arylbenzofurans isolated from Morus alba root bark: unraveling the mechanism of inhibition based on in vitro and in silico studies. Arch Pharm Res 2020; 43:961-975. [PMID: 32978714 PMCID: PMC7518952 DOI: 10.1007/s12272-020-01269-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 04/14/2020] [Accepted: 09/22/2020] [Indexed: 12/24/2022]
Abstract
Among the 2-arylbenzofuran derivatives isolated from Morus alba, the farnesylated 2-arylbenzofuran is a rarer constituent. The derivative has been reported to exert anti-obesity effect; however, its inhibitory effect on protein tyrosine phosphatase 1B (PTP1B) has not been investigated. In the previous study, the presence of the farnesyl group in the structure of 2-arylbenzofurans was found to have positive influences on their pancreatic lipase inhibitory activity. In the present study, we have confirmed the authenticity of the notation based on the PTP1B inhibitory activity of farnesylated 2-arylbenzofurans. Specifically, two farnesylated 2-arylbenzofurans [morusalfurans B (2) and C (3)] showed strong inhibitory effects on PTP1B with IC50 values of 8.92 and 7.26 µM, respectively, which was significantly higher than that of the positive controls [sodium orthovanadate (IC50 = 15.10 µM) and ursolic acid (IC50 = 11.34 µM)]. Besides, two 2-arylbenzofurans [morusalfurans A (1) and F (6)], one flavonoid [morusalnol B (9)], and one geranylated stilbene [morusibene A (11)] exhibited PTP1B inhibition with IC50 values ranging from 11.02 to 26.56 µM. Kinetic studies revealed compounds 2, 3, 6, and 11 as mixed type PTP1B inhibitors, while 1 and 9 are known as noncompetitive. Molecular docking simulations demonstrated that these active compounds can bind with the respective catalytic or/and allosteric sites of PTP1B with negative binding energies and the results are in accordance with that of the kinetic studies. To the best of our knowledge, this is the first time, the PTP1B inhibitory activity of eleven compounds (1–11), as well as the mechanism of action underlying the effects on PTP1B enzyme of the active compounds, were investigated. In vitro and in silico results suggest that the farnesylated 2-arylbenzofurans from M. alba may potentially be utilized as an effective treatment therapy for type 2 diabetes mellitus and its associated complications.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, 38430, Gyeongbuk, Republic of Korea.,School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Srijan Shrestha
- Department of Food and Life Science, Pukyong National University, 48513, Busan, Republic of Korea.,Discipline of Pharmacology, School of Medicine, Faculty of Health Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - Thu Huong Tran
- School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Jeong Ah Kim
- College of Pharmacy, Kyungpook National University, 702-701, Daegu, Republic of Korea
| | - Mi Hee Woo
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, 38430, Gyeongbuk, Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, 48513, Busan, Republic of Korea.
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, 38430, Gyeongbuk, Republic of Korea.
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14
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Vu NK, Kim CS, Ha MT, Ngo QMT, Park SE, Kwon H, Lee D, Choi JS, Kim JA, Min BS. Antioxidant and Antidiabetic Activities of Flavonoid Derivatives from the Outer Skins of Allium cepa L. J Agric Food Chem 2020; 68:8797-8811. [PMID: 32603104 DOI: 10.1021/acs.jafc.0c02122] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The onion, known as the bulb onion or common onion, is not only a key ingredient in many tasty and healthy vegetarian meals but also many traditional medicines. Nine new flavonoids [cepaflavas A, B (5, 6), cepadials A-D (7-9 and 14), and cepabiflas A-C (10-12)] and six known compounds (1-4, 13, 15) were obtained from the outer skins of Allium cepa L. Among them, compounds 5, 6, and 9 might be artificial products formed during extraction and isolation. New compounds were structurally elucidated using various spectroscopy/spectrometry techniques, including NMR and HRMS, and computational methods. Their absolute configurations were determined using time-dependent density functional theory calculations, combined with ECD spectroscopy, optical rotation calculation, and statistical procedures (CP3 and DP4 analysis). The free radical scavenging assays revealed that the new compounds 10-12 possessed considerable antioxidant activities with IC50 values of 4.25-8.88 and 7.12-8.14 μM against DPPH and ABTS•+, respectively. Compounds 13-15 showed substantial inhibitory activities against both α-glucosidase and protein tyrosine phosphatase 1B (PTP1B), with IC50 values of 0.89-6.80 and 1.13-6.82 μM, respectively. On the basis of molecular docking studies, 13 and 15 were predicted to have high binding capacity and strong affinity toward the active site of PTP1B.
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Affiliation(s)
- Ngoc Khanh Vu
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Chung Sub Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Quynh-Mai Thi Ngo
- College of Pharmacy, Hai Phong University of Medicine and Pharmacy, 72A Nguyen Binh Khiem, Hai Phong 180000, Viet Nam
| | - Se Eun Park
- Department of Food and Life Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Haeun Kwon
- Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| | - Dongho Lee
- Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
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15
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Ha MT, Kim M, Kim CS, Park SE, Kim JA, Woo MH, Choi JS, Min BS. Tetra-aryl cyclobutane and stilbenes from the rhizomes of Rheum undulatum and their α-glucosidase inhibitory activity: Biological evaluation, kinetic analysis, and molecular docking simulation. Bioorg Med Chem Lett 2020; 30:127049. [PMID: 32111435 DOI: 10.1016/j.bmcl.2020.127049] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/13/2020] [Accepted: 02/16/2020] [Indexed: 12/01/2022]
Abstract
One achiral tetra-aryl cyclobutane [rheundulin A (1)] and three stilbene glycosides [rheundulins B-D (2-4)] were isolated from the methanol extract of Rheum undulatum L., along with eight known compounds (5-12). Structural determination of the new compounds (1-4) was accomplished using comprehensive spectroscopic methods. Compound 1 represents the first example of a dimeric stilbene linked via a cyclobutane ring from the Rheum genus. All isolates were screened for their inhibition against α-glucosidase. Among them, stilbene derivatives (5 and 6) showed strong inhibitory effects on α-glucosidase with IC50 values of 0.5 and 15.4 µM, respectively, which were significantly higher than that of the positive control, acarbose (IC50 = 126.8 µM). Rheundulin A (1) showed moderate α-glucosidase inhibition with an IC50 value of 80.1 µM. In addition, kinetic analysis and molecular docking simulation of the most active compound (5) with α-glucosidase were performed for the first time. Kinetic studies revealed that compound 5 competitively inhibited the active site of α-glucosidase (Ki = 0.40 µM), while 6 had a mixed-type inhibitory effect against α-glucosidase (Ki = 15.34 µM). Molecular docking simulations of 5 and 6 demonstrated negative-binding energies, indicating high proximity to the active site and tight binding to α-glucosidase enzyme.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea; Laboratory of Research and Applied Biochemistry, Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, Hanoi, Viet Nam
| | - Minji Kim
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Chung Sub Kim
- Department of Chemistry, Yale University, New Haven, CT 06520, United States
| | - Se-Eun Park
- Department of Food and Life Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Mi Hee Woo
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea.
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16
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Nguyen TTA, Ha MT, Park SE, Choi JS, Min BS, Kim JA. Stilbenes with Potent Protein Tyrosine Phosphatase-1B Inhibitory Activity from the Roots of Polygonum multiflorum. J Nat Prod 2020; 83:323-332. [PMID: 31944695 DOI: 10.1021/acs.jnatprod.9b00777] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Seven new stilbene glycosides including three dimers (1-3) and four monomers (4-7) were isolated from the roots of Polygonum multiflorum along with nine previously identified stilbenes (8-16). In addition, two deglucosylated stilbenes, 2a and 3a, were also obtained as new dimeric stilbenes. The structures of the purified phytochemicals were elucidated by interpreting their spectroscopic data (NMR, HRMS, and ECD). To the best of our knowledge, this represents the first isolation of a phenylpropanoid (C6-C3) substituted with a stilbene unit (7) from the Polygonaceae family. In an in vitro enzyme assay with human recombinant protein tyrosine phosphatase-1B (PTP1B), compounds 2-5 showed weak PTP1B inhibition with an IC50 value range of 27.4-37.6 μM, while three deglucosylated stilbenes 2a, 3a, and 8a exhibited IC50 values of 2.1, 1.9, and 12.1 μM, respectively. The inhibition modes and binding mechanism of selected inhibitors (2a and 3a) were investigated using kinetic methods and molecular docking simulations.
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Affiliation(s)
- Thi-Thuy An Nguyen
- College of Pharmacy, Research Institute of Pharmaceutical Sciences , Kyungpook National University , Daegu 41566 , Republic of Korea
| | - Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center , Daegu Catholic University , Gyeongbuk 38430 , Republic of Korea
| | - Se-Eun Park
- Department of Food and Life Science , Pukyong National University , Busan 48513 , Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science , Pukyong National University , Busan 48513 , Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center , Daegu Catholic University , Gyeongbuk 38430 , Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences , Kyungpook National University , Daegu 41566 , Republic of Korea
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17
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Park AR, Jeong SI, Jeon HW, Kim J, Kim N, Ha MT, Mannaa M, Kim J, Lee CW, Min BS, Seo YS, Kim JC. A Diketopiperazine, Cyclo-(L-Pro-L-Ile), Derived From Bacillus thuringiensis JCK-1233 Controls Pine Wilt Disease by Elicitation of Moderate Hypersensitive Reaction. Front Plant Sci 2020; 11:1023. [PMID: 32849672 PMCID: PMC7396504 DOI: 10.3389/fpls.2020.01023] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/22/2020] [Indexed: 05/17/2023]
Abstract
Pine wilt disease (PWD) caused by the pine wood nematode (PWN) Bursaphelenchus xylophilus is one of the devastating diseases affecting pine forests worldwide. Although effective control measurements are still missing, induction of resistance could represent a possible eco-friendly alternative. In this study, induced resistance-based in vitro and in vivo screening tests were carried out for selection of bacteria with the ability to suppress PWD. Out of 504 isolated bacteria, Bacillus thuringiensis JCK-1233 was selected for its ability to boost pathogenesis-related 1 (PR1) gene expression, a marker of systemic acquired resistance. Moreover, treatment of pine seedlings with B. thuringiensis JCK-1233 resulted in increased expression of other defense-related genes, and significantly inhibited PWD development under greenhouse conditions. However, B. thuringiensis JCK-1233 showed no direct nematicidal activity against B. xylophilus. To identify the effective compound responsible for the induction of resistance in B. thuringiensis JCK-1233, several diketopiperazines (DPKs) including cyclo-(D-Pro-L-Val), cyclo-(L-Pro-L-Ile), cyclo-(L-Pro-L-Phe), and cyclo-(L-Leu-L-Val) were isolated and tested. Foliar treatment of pine seedlings with Cyclo-(L-Pro-L-Ile) resulted in suppression of PWD severity and increased the expression of defense-related genes similarly to B. thuringiensis JCK-1233 treatment. Interestingly, treatment with B. thuringiensis JCK-1233 or cyclo-(L-Pro-L-Ile) showed moderately enhanced expression of PR-1, PR-2, PR-3, PR-4, PR-5, and PR-9 genes following inoculation with PWN compared to that in the untreated control, indicating that they mitigated the burst of hypersensitive reaction in susceptible pine seedlings. In contrast, they significantly increased the expression levels of PR-6 and PR-10 before PWN inoculation. In conclusion, foliar spraying with either B. thuringiensis JCK-1233 culture suspension or DPKs could induce resistance in pine seedlings, thereby alleviating the serious damage by PWD. Taken together, this study supports aerial spraying with eco-friendly biotic or abiotic agents as a valuable strategy that may mark an epoch for the control of PWD in pine forests.
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Affiliation(s)
- Ae Ran Park
- Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju, South Korea
| | - Se-In Jeong
- Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju, South Korea
| | - Hee Won Jeon
- Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju, South Korea
| | - Jueun Kim
- Department of Chemistry, Chonnam National University, Gwangju, South Korea
| | - Namgyu Kim
- Department of Integrated Biological Science, College of Natural Science, Pusan National University, Busan, South Korea
| | - Manh Tuan Ha
- Drug Research and Development Center, College of Pharmacy, Daegu Catholic University, Gyeongbuk, South Korea
| | - Mohamed Mannaa
- Department of Integrated Biological Science, College of Natural Science, Pusan National University, Busan, South Korea
| | - Junheon Kim
- Forest Insect Pests and Diseases Division, National Institute of Forest Science, Seoul, South Korea
| | - Chul Won Lee
- Department of Chemistry, Chonnam National University, Gwangju, South Korea
| | - Byung Sun Min
- Drug Research and Development Center, College of Pharmacy, Daegu Catholic University, Gyeongbuk, South Korea
| | - Young-Su Seo
- Department of Integrated Biological Science, College of Natural Science, Pusan National University, Busan, South Korea
- *Correspondence: Young-Su Seo, ; Jin-Cheol Kim,
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju, South Korea
- *Correspondence: Young-Su Seo, ; Jin-Cheol Kim,
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Paudel P, Seong SH, Zhou Y, Ha MT, Min BS, Jung HA, Choi JS. Arylbenzofurans from the Root Bark of Morus alba as Triple Inhibitors of Cholinesterase, β-Site Amyloid Precursor Protein Cleaving Enzyme 1, and Glycogen Synthase Kinase-3β: Relevance to Alzheimer's Disease. ACS Omega 2019; 4:6283-6294. [PMID: 31459768 PMCID: PMC6649263 DOI: 10.1021/acsomega.9b00198] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 03/25/2019] [Indexed: 05/07/2023]
Abstract
Cholinesterase, β-site amyloid precursor protein cleaving enzyme 1 (BACE1), and glycogen synthase kinase-3β (GSK-3β) are the three main enzymes responsible for the early onset of Alzheimer's disease (AD). The main aim of the present study was to delineate and accentuate the triple-inhibitory potential of arylbenzofurans from Morus alba against these enzymes. Overall, the enzyme inhibition assays demonstrated the prominence of mulberrofuran D2 as an inhibitor of AChE, BChE, BACE1, and GSK-3β enzymes with IC50 values of 4.61, 1.51, 0.73, and 6.36 μM, respectively. Enzyme kinetics revealed different modes of inhibition, and in silico modeling suggested that mulberrofuran D2 inhibited these enzymes with low binding energy through hydrophilic, hydrophobic, and π-cation interactions in the active site cavities. Similarly, in Aβ-aggregation assays, mulberrofuran D2 inhibited self-induced and AChE-induced Aβ aggregation in a concentration-dependent manner that was superior to reference drugs. These results suggest that arylbenzofurans from M. alba, especially mulberrofuran D2, are triple inhibitors of cholinesterase, BACE1, and GSK-3β and may represent a novel class of anti-AD drugs.
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Affiliation(s)
- Pradeep Paudel
- Department
of Food and Life Science, Pukyong National
University, Busan 48513, Republic of Korea
| | - Su Hui Seong
- Department
of Food and Life Science, Pukyong National
University, Busan 48513, Republic of Korea
| | - Yajuan Zhou
- Department
of Food and Life Science, Pukyong National
University, Busan 48513, Republic of Korea
| | - Manh Tuan Ha
- College
of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongbuk 38430, Republic of Korea
| | - Byung Sun Min
- College
of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongbuk 38430, Republic of Korea
| | - Hyun Ah Jung
- Department
of Food Science and Human Nutrition, Chonbuk
National University, Jeonju 54896, Republic of Korea
- E-mail: . Tel: +82-63-270-4882 (H.A.J.)
| | - Jae Sue Choi
- Department
of Food and Life Science, Pukyong National
University, Busan 48513, Republic of Korea
- E-mail: . Tel: +82-51-629-5845 (J.S.C.)
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19
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Jung YW, Lee BM, Ha MT, Tran MH, Kim JA, Lee S, Lee JH, Woo MH, Min BS. Lignans from Saururus chinensis exhibit anti-inflammatory activity by influencing the Nrf2/HO-1 activation pathway. Arch Pharm Res 2019; 42:332-343. [DOI: 10.1007/s12272-018-1093-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/16/2018] [Indexed: 01/17/2023]
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20
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Hoang MTV, Nguyen TA, Tran TT, Vu TTH, Le NTN, Nguyen THN, Le THN, Nguyen TTH, Nguyen TH, Le NTN, Truong HK, Du TQ, Ha MT, Ho LV, Do CV, Nguyen TN, Nguyen TMT, Sabanathan S, Phan TQ, Nguyen Van VC, Thwaites GE, Wills B, Thwaites CL, Le VT, van Doorn HR. Clinical and aetiological study of hand, foot and mouth disease in southern Vietnam, 2013-2015: Inpatients and outpatients. Int J Infect Dis 2018; 80:1-9. [PMID: 30550944 PMCID: PMC6403263 DOI: 10.1016/j.ijid.2018.12.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 12/02/2018] [Accepted: 12/06/2018] [Indexed: 11/17/2022] Open
Abstract
Multiple serotypes of enterovirus A cause hand, foot and mouth disease in southern Vietnam. Clinical characteristics differed slightly between the different pathogen groups. CV-A6 and CV-A10 emerged in Vietnam in 2013–2015. An unexpected dominance of EV-A71 was found among both inpatients and outpatients.
Background Hand, foot and mouth disease (HFMD) has been associated with large outbreaks among young children in the Asia-Pacific Region since 1997, including cases of severe illness and death. Severe illness is often associated with enterovirus A71 (EV-A71). Vietnam experienced a large sustained outbreak of 200 000 hospitalized cases and over 200 deaths in 2011–12, the large majority occurring in southern Vietnam. Methods A prospective observational study was conducted in the outpatient clinics, infectious diseases wards, and paediatric intensive care units of the three main referral centres for the treatment of HFMD in southern Vietnam. Demographic data, basic laboratory parameters, and clinical data were recorded, and molecular diagnostic tests were performed. Results Between July 2013 and July 2015, a total of 1547 children were enrolled. Four serotypes of enterovirus A (EV-A71, Coxsackievirus (CV) A6, A10, and A16) were responsible for 1005 of 1327 diagnosed cases (75.7%). An unexpected dominance of EV-A71 was found among both inpatients and outpatients, as well as a strong association with severe illness. CV-A6 and CV-A10 emerged in Vietnam during the study period and replaced CV-A16. CV-A10 was associated with different clinical and laboratory characteristics. During admission, 119 children developed a more severe illness. It was found that children with a skin rash showed less progression of severity, but when a rash was present, a macular rash was significantly associated with an increased risk of progression. Conclusions This study represents the most comprehensive descriptive HFMD study from Vietnam to date. Co-circulation and replacement of different serotypes has implications for vaccine development and implementation. These findings from a severely affected country add to our understanding of the presentation, progression, and aetiology of HFMD.
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Affiliation(s)
- Minh Tu Van Hoang
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam; Children's Hospital 2, Ho Chi Minh City, Vietnam.
| | - To Anh Nguyen
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | - Tan Thanh Tran
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | - Thi Ty Hang Vu
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | | | | | | | | | | | | | | | - Tuan Quy Du
- Children's Hospital 1, Ho Chi Minh City, Vietnam
| | - Manh Tuan Ha
- Children's Hospital 2, Ho Chi Minh City, Vietnam
| | - Lu Viet Ho
- Children's Hospital 2, Ho Chi Minh City, Vietnam
| | - Chau Viet Do
- Children's Hospital 2, Ho Chi Minh City, Vietnam
| | | | | | | | - Tu Qui Phan
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam; Hospital of Tropical Diseases, Ho Chi Minh City, Vietnam
| | | | - 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
| | - Bridget Wills
- 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
| | - C Louise 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
| | - Van Tan Le
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | - H Rogier van Doorn
- 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
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Abstract
Medicinal plants have been shown to have tremendous potential for the development of new drug molecules for various serious diseases. Piper nigrum L. (Piperaceae) is a well-known spice considered to be the “The King of Spices” among various spices. The phytochemicals isolated from P. nigrum L. are potent biological agents with anticancer properties. Our study was designed to evaluate the cytotoxic activities of chemical compounds from the dried fruits of P. nigrum L. Sixteen known compounds (1–16), including fifteen alkaloids, were isolated and identified. Compounds 10, 11, 12, 13, 14, and 15 exhibited cytotoxic activities against a human cervical cancer cell line, Hela, with IC50 values of 49.8, 40.4, 23.1, 22.1, 41.0, and 26.9 μM, respectively. Compounds 10, 12, and 15 exhibited cytotoxicities against a breast cancer cell line, MCF-7, with IC50 values of 36.9, 55.7, and 36.0 μM, respectively. Compounds 6, 12, 13, 14, 15, and 16 exhibited cytotoxic activities against the human promyelocytic leukemia cell line, HL-60, with IC50 values of 26.9, 51.4, 51.6, 54.4, 16.0, and 21.1 μM, respectively.
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Affiliation(s)
- Quynh Mai Thi Ngo
- College of Pharmacy, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Thao Quyen Cao
- College of Pharmacy, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Le Son Hoang
- College of Pharmacy, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Manh Tuan Ha
- College of Pharmacy, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Mi Hee Woo
- College of Pharmacy, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
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Ha MT, Park DH, Shrestha S, Kim M, Kim JA, Woo MH, Choi JS, Min BS. PTP1B inhibitory activity and molecular docking analysis of stilbene derivatives from the rhizomes of Rheum undulatum L. Fitoterapia 2018; 131:119-126. [DOI: 10.1016/j.fitote.2018.10.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/17/2018] [Accepted: 10/19/2018] [Indexed: 12/12/2022]
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Ha MT, Seong SH, Nguyen TD, Cho WK, Ah KJ, Ma JY, Woo MH, Choi JS, Min BS. Chalcone derivatives from the root bark of Morus alba L. act as inhibitors of PTP1B and α-glucosidase. Phytochemistry 2018; 155:114-125. [PMID: 30103164 DOI: 10.1016/j.phytochem.2018.08.001] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [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: 03/30/2018] [Revised: 07/24/2018] [Accepted: 08/04/2018] [Indexed: 05/18/2023]
Abstract
As part of our continuing research to obtain pharmacologically active compounds from Morus alba L. (Moraceae), four Diels-Alder type adducts (DAs) [morusalbins A-D], one isoprenylated flavonoid [albanin T], together with twenty-one known phenolic compounds were isolated from its root bark. The chemical structures were established using NMR, MS, and ECD spectra. The DAs including morusalbins A-D, albasin B, macrourin G, yunanensin A, mulberrofuran G and K, and albanol B exhibited strong inhibitory activities against both protein tyrosine phosphatase 1B (PTP1B) (IC50, 1.90-9.67 μM) and α-glucosidase (IC50, 2.29-5.91 μM). In the kinetic study, morusalbin D, albasin B, and macrourin G showed noncompetitive PTP1B inhibition, with Ki values of 0.33, 1.00, and 1.09 μM, respectively. In contrast, these DAs together with yunanensin A produced competitive inhibition of α-glucosidase, with Ki values of 0.64, 0.42, 2.42, and 1.19 μM, respectively. Furthermore, molecular docking studies revealed that these active DAs have high affinity and tight binding capacity towards the active site of PTP1B and α-glucosidase.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea; Laboratory of Research and Applied Biochemistry, Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, Hanoi, Viet Nam
| | - Su Hui Seong
- Department of Food and Life Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Tien Dat Nguyen
- Laboratory of Research and Applied Biochemistry, Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, Hanoi, Viet Nam
| | - Won-Kyung Cho
- Korean Medicine Application Center, Korea Institute of Oriental Medicine (KIOM), 70 Cheomdan-ro, Dong-gu, Daegu 41062, Republic of Korea
| | - Kim Jeong Ah
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jin Yeul Ma
- Korean Medicine Application Center, Korea Institute of Oriental Medicine (KIOM), 70 Cheomdan-ro, Dong-gu, Daegu 41062, Republic of Korea.
| | - Mi Hee Woo
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan 48513, Republic of Korea.
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea.
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Ha MT, Phan TN, Kim JA, Oh WK, Lee JH, Woo MH, Min BS. Trichosanhemiketal A and B: Two 13,14-seco-13,14-epoxyporiferastanes from the root of Trichosanthes kirilowii Maxim. Bioorg Chem 2018; 83:105-110. [PMID: 30343203 DOI: 10.1016/j.bioorg.2018.10.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/09/2018] [Accepted: 10/09/2018] [Indexed: 01/27/2023]
Abstract
Of the 32 Trichosanthes species in China, T. kirilowii Maxim. is the most renowned species used in traditional Chinese medicine and has diverse pharmacological properties. However, most of the phytochemical studies of T. kirilowii have focused on the fruits and seeds. In our investigation of the chemical constituents of T. kirilowii roots, two previously undescribed sterols [trichosanhemiketal A and B (1 and 2)], together with 13 known compounds, were isolated and their structures were elucidated. To the best of our knowledge, this represents the first isolation of compounds with a 13,14-seco-13,14-epoxyporiferastane (1-2) skeleton from the Cucurbitaceae family. The anti-inflammatory activity of the isolated compounds was determined through an analysis of their inhibitory effects on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in macrophage RAW264.7 cells. Of the compounds, 4, 5, 6, and 8 showed significant inhibitory activities, with IC50 values of 8.5, 15.1, 25.4, and 28.5 µM, respectively. In addition, compound 4 inhibited inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 expression in a concentration-dependent manner.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea; Laboratory of Research and Applied Biochemistry, Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, Hanoi, Viet Nam
| | - Thanh Nam Phan
- College of Natural Science, Kangwon National University, Kangwon 200-701, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea.
| | - Won Keun Oh
- College of Pharmacy, Seoul National Univeristy, Seoul 08826, Republic of Korea
| | - Jeong Hyung Lee
- College of Natural Science, Kangwon National University, Kangwon 200-701, Republic of Korea
| | - Mi Hee Woo
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea.
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Seong SH, Ha MT, Min BS, Jung HA, Choi JS. Moracin derivatives from Morus Radix as dual BACE1 and cholinesterase inhibitors with antioxidant and anti-glycation capacities. Life Sci 2018; 210:20-28. [DOI: 10.1016/j.lfs.2018.08.060] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 12/20/2022]
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26
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Nguyen MT, Ho TN, Nguyen VVC, Nguyen TH, Ha MT, Ta VT, Nguyen LDH, Phan L, Han KQ, Duong THK, Tran NBC, Wills B, Wolbers M, Simmons CP. An Evidence-Based Algorithm for Early Prognosis of Severe Dengue in the Outpatient Setting. Clin Infect Dis 2017; 64:656-663. [PMID: 28034883 PMCID: PMC5850639 DOI: 10.1093/cid/ciw863] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 08/01/2016] [Accepted: 12/22/2016] [Indexed: 11/13/2022] Open
Abstract
Background Early prediction of severe dengue could significantly assist patient triage and case management. Methods We prospectively investigated 7563 children with ≤3 days of fever recruited in the outpatient departments of 6 hospitals in southern Vietnam between 2010 and 2013. The primary endpoint of interest was severe dengue (2009 World Health Organization Guidelines), and predefined risk variables were collected at the time of enrollment to enable prognostic model development. Results The analysis population comprised 7544 patients, of whom 2060 (27.3%) had laboratory-confirmed dengue; nested among these were 117 (1.5%) severe cases. In the multivariate logistic model, a history of vomiting, lower platelet count, elevated aspartate aminotransferase (AST) level, positivity in the nonstructural protein 1 (NS1) rapid test, and viremia magnitude were all independently associated with severe dengue. The final prognostic model (Early Severe Dengue Identifier [ESDI]) included history of vomiting, platelet count, AST level. and NS1 rapid test status. Conclusions The ESDI had acceptable performance features (area under the curve = 0.95, sensitivity 87% (95% confidence interval [CI], 80%-92%), specificity 88% (95% CI, 87%-89%), positive predictive value 10% (95% CI, 9%-12%), and negative predictive value of 99% (95% CI, 98%-100%) in the population of all 7563 enrolled children. A score chart, for routine clinical use, was derived from the prognostic model and could improve triage and management of children presenting with fever in dengue-endemic areas.
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Affiliation(s)
| | - Thi Nhan Ho
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Oxford, England, UK
| | - Van Vinh Chau Nguyen
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Oxford, England, UK
| | | | - Manh Tuan Ha
- Children's Hospital No. 2, Ho Chi Minh City, Vietnam
| | - Van Tram Ta
- Tien Giang Provincial Hospital, My Tho, Vietnam
| | | | - Loi Phan
- Long An Provincial Hospital, Tan An, Vietnam
| | | | - Thi Hue Kien Duong
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Oxford, England, UK
| | - Nguyen Bich Chau Tran
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Oxford, England, UK
| | - Bridget Wills
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Oxford, England, UK.,Centre for Tropical Medicine, Nuffield Department of Medicine, University of Oxford, United Kingdom
| | - Marcel Wolbers
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Oxford, England, UK.,Centre for Tropical Medicine, Nuffield Department of Medicine, University of Oxford, United Kingdom
| | - Cameron P Simmons
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Oxford, England, UK.,Centre for Tropical Medicine, Nuffield Department of Medicine, University of Oxford, United Kingdom,Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Victoria, Australia
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Fraser JA, Flemington T, Doan TND, Hoang MTV, Doan TLB, Ha MT. Prevention and recognition of abusive head trauma: training for healthcare professionals in Vietnam. Acta Paediatr 2017; 106:1608-1616. [PMID: 28685899 DOI: 10.1111/apa.13977] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 06/22/2017] [Accepted: 07/04/2017] [Indexed: 11/26/2022]
Abstract
AIM This study presents results from an intervention designed to improve identification and response to abusive head trauma in a tertiary paediatric hospital in Vietnam. METHODS One hundred and sixteen healthcare professionals (paediatric medical and nursing staff) completed a clinical training programme and participated in its evaluation. A pre-post-test and follow-up design was used to evaluate the outcomes. Questionnaires were used to collect data prior to training, at six weeks and at six months. Generalised linear modelling was used to examine changes in diagnostic skills and knowledge of the consequences of shaken baby syndrome (SBS) (a form of abusive head trauma), its prevention and treatment. RESULTS At baseline, awareness and knowledge reflected no former abusive head trauma training. Following the intervention, participants had an increased awareness of shaken baby syndrome and the potential consequences of shaking infants and had acquired techniques to inform parents how to manage the crying infant. CONCLUSION The intervention was effective in raising awareness of shaken baby syndrome and its consequences amongst the participating healthcare professionals in Vietnam. Training can improve detection and prevention of abusive head trauma, and the intervention has the potential to be adapted for similar settings internationally.
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Affiliation(s)
| | - Tara Flemington
- Sydney Nursing School; University of Sydney; Sydney NSW Australia
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Ha MT, Tran MH, Phuong TT, Kim JA, Woo MH, Choi JS, Lee S, Lee JH, Lee HK, Min BS. Cytotoxic and apoptosis-inducing activities against human lung cancer cell lines of cassaine diterpenoids from the bark of Erythrophleum fordii. Bioorg Med Chem Lett 2017; 27:2946-2952. [PMID: 28506750 DOI: 10.1016/j.bmcl.2017.05.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 01/16/2017] [Revised: 04/27/2017] [Accepted: 05/03/2017] [Indexed: 11/19/2022]
Abstract
A phytochemical investigation into the bark of Erythrophleum fordii yielded four new compounds, two new cassaine diterpenoids (erythrofordin T and U, 1 and 2) and two new cassaine diterpenoid amines (erythroformine A and B, 6 and 7), as well as nine known compounds. We report for the first time the isolation of erythrofordin V (3) from a natural source and that of the remaining eight known diterpenoids (4-5, 8-13) from E. fordii. All structures were elucidated using spectroscopic analysis. Cytotoxic activity of the isolated compounds (1-13) was examined in vitro against three non-small cell lung cancer cell lines (A549, NCI-H1975, and NCI-H1229) using the MTT assay. Cassaine diterpene amines (6-10, 12, 13) exhibited potent cytotoxic activity against all three cell lines with IC50 values between 0.4μM and 5.9μM. Erythroformine B (7) significantly induced apoptosis in all three cancer cells in a concentration-dependent manner.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongbuk 712-702, Republic of Korea; Department of Bioactive Products, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, Cau Giay District, Hanoi, Viet Nam
| | - Manh Hung Tran
- Biomedical Science Department, VNUK Institute for Research and Executive Education, The University of Danang, 158A Le Loi, Hai Chau District, Danang City, Viet Nam
| | - Thien Thuong Phuong
- National Institute of Medicinal Materials, 3B Quang Trung Street, Hanoi, Viet Nam
| | - Jeong Ah Kim
- College of Pharmacy, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Mi Hee Woo
- College of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongbuk 712-702, Republic of Korea
| | - Jae Sue Choi
- Faculty of Food Science and Biotechnology, Pukyung National University, Busan 608-737, Republic of Korea
| | - Suhyun Lee
- College of Natural Science, Kangwon National University, Kangwon 200-701, Republic of Korea
| | - Jeong Hyung Lee
- College of Natural Science, Kangwon National University, Kangwon 200-701, Republic of Korea.
| | - Hyeong Kyu Lee
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, Chungbuk 363-883, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongbuk 712-702, Republic of Korea.
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Ha MT, Tran MH, Ah KJ, Jo KJ, Kim J, Kim WD, Cheon WJ, Woo MH, Ryu SH, Min BS. Potential pancreatic lipase inhibitory activity of phenolic constituents from the root bark of Morus alba L. Bioorg Med Chem Lett 2016; 26:2788-2794. [PMID: 27156775 DOI: 10.1016/j.bmcl.2016.04.066] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 04/20/2016] [Accepted: 04/23/2016] [Indexed: 12/25/2022]
Abstract
Detailed phytochemical investigation from the root bark of Morus alba resulted in the isolation of eleven new compounds, including seven 2-arylbenzofuran derivatives (morusalfurans A-G), three flavonoids (morusalnols A-C), and one geranylated stilbene (morusibene A), as well as 22 known compounds. The structures of the identified compounds were elucidated based on a comprehensive analysis of spectroscopic data and Mosher's method. Compounds 2, 3, 6-8, 11, 23, 24, and 29 showed potent inhibition of PL in comparison with the positive control treatment (orlistat, IC50=0.012μM), with IC50 values ranging from 0.09 to 0.92μM.
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Affiliation(s)
- Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongbuk 712-702, Republic of Korea; Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, Cau Giay District, Hanoi, Vietnam
| | - Manh Hung Tran
- College of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongbuk 712-702, Republic of Korea
| | - Kim Jeong Ah
- College of Pharmacy, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Kyung-Jin Jo
- Division of Molecular and Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Jaewang Kim
- Division of Molecular and Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Wook Dong Kim
- Gyeongsanbuk-do Forest & Environment Research Institute, Gyeongju 780-936, Republic of Korea
| | - Woo Jae Cheon
- Gyeongsanbuk-do Forest & Environment Research Institute, Gyeongju 780-936, Republic of Korea
| | - Mi Hee Woo
- College of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongbuk 712-702, Republic of Korea
| | - Sung Ho Ryu
- Division of Molecular and Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Catholic University of Daegu, Gyeongbuk 712-702, Republic of Korea.
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Tran DN, Pham TMH, Ha MT, Hayakawa S, Mizuguchi M, Ushijima H. Molecular epidemiology of influenza A virus infection among hospitalized children in Vietnam during post-pandemic period. J Med Virol 2015; 87:904-12. [PMID: 25648607 PMCID: PMC7166353 DOI: 10.1002/jmv.24143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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] [Accepted: 12/05/2014] [Indexed: 12/11/2022]
Abstract
Genetic variability makes influenza virus to escape the immunity and causes yearly epidemics. Monitoring those changes is necessary for vaccine selection. In addition, H3N2 viruses were considered to be seeded from Southeast Asia before spreading globally. This study described the molecular epidemiology of influenza A during the post‐pandemic season 2010–2011 in Vietnam. Nasopharyngeal samples were collected from children with respiratory infections at Children's Hospital 2, Ho Chi Minh City. The HA, NA, M genes were amplified, sequenced and analyzed. Thirty‐five of 1,082 (3.2%) patients were positive for influenza A, including 14 pandemic H1N1 2009 (H1N1pdm09) and 21 H3N2 infections. H3N2 was dominant in the rainy season (May–October 2010) while H1N1pdm09 was dominant in the dry season (November 2010–April 2011). Phylogenetic analysis showed that Vietnamese H1N1pdm09 sequences in 2010–2011 formed the distinct cluster, with other contemporary Asian and 2012‐American sequences, suggesting a possible common ancestor. All were oseltamivir‐sensitive except two strains carrying S247N and D199N in NA which reduced the neuraminidase inhibitor susceptibility. The Vietnamese H3N2 viruses in mid‐2010 belonged to the emerging subclade Perth10/2010, which then spread worldwide in 2011. The Vietnamese influenza viruses were well matched with the Southern Hemisphere vaccine formulation. Mutations at antigenic sites were also identified in these viruses. Surveillance of influenza viruses in tropical countries is important not only for development of their prevention and control strategies but also for earlier identification of the newly emerged strains that may be selected for future vaccine. J. Med. Virol. 87:904–912, 2015. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Dinh Nguyen Tran
- Department of Developmental Medical Sciences, School of International Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; Department of Pediatrics, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam; Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
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Shieh M, Thompson C, Phan VTM, Van TTL, Tediosi F, Merson L, Farrar JJ, Ha MT, Ho LV, Pham TNT, Baker S. The policy of free healthcare for children under the age of 6 years in Vietnam: assessment of the uptake for children hospitalised with acute diarrhoea in Ho Chi Minh City. Trop Med Int Health 2013; 18:1444-51. [PMID: 24134427 PMCID: PMC3992841 DOI: 10.1111/tmi.12208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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] [Indexed: 12/03/2022]
Abstract
Objective To assess the proportion of, and reasons for, households not utilising the policy of free healthcare for children under 6 years of age (FCCU6) for hospitalisation with diarrhoea, and assess the risk of catastrophic expenditure for households that forgo FCCU6 and pay out of pocket. Methods Invoices detailing insurance information and charges incurred from 472 hospitalised diarrhoeal cases in one paediatric hospital in Ho Chi Minh City were retrieved. Hospital charges and the utilisation of elective services were analysed for patients utilising and not utilising FCCU6. Associations between socio-economic factors with non-utilisation of FCCU6 were evaluated. Results Overall, 29% of patients were FCCU6 non-users. The FCCU6 non-users paid a median hospital charge of $29.13 (interquartile range, IQR: $18.57–46.24), consuming no more than 1.4% of a medium-income household's annual income. Seventy per cent of low-income FCCU6 non-users utilised less-expensive elective services, whereas only 43% of medium income patients and 21% of high-income patients did (P = 0.036). Patients from larger households and those with a parent working in government were more likely to use FCCU6. Conclusions The rate of FCCU6 non-usage in this study population was 29%. A significant proportion of those that did not use FCCU6 was from lower income households and may perceive a justifiable cost–benefit ratio when forgoing FCCU6. Although a single diarrhoeal hospitalisation is unlikely to induce a catastrophic expenditure, FCCU6 non-usage may disproportionately increase the risk of catastrophic expenditure for lower income households over multiple illnesses.
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Affiliation(s)
- Mae Shieh
- Novartis Vaccines Institute for Global Health, Siena, Italy
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Tran DN, Vu MP, Ha MT, Giang TPL, Komase K, Mizuguchi M, Ushijima H. Viral molecular characterization of the first congenital rubella syndrome case in Vietnam. Clin Lab 2011; 57:397-401. [PMID: 21755831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Rubella virus (RV) infection during the first trimester of pregnancy often leads to severe birth defects known as congenital rubella syndrome (CRS). METHODS A premature newborn male was clinically diagnosed as CRS with cataracts, congenital heart defects, microcephaly, hepatosplenomegaly, and thrombocytopenia. The infection was confirmed serologically and molecularly. RESULTS The RV was characterized and clustered with the 2B genotype. CONCLUSIONS The integrated description of clinical features, serological and molecular data provide a baseline for diagnosis and control of rubella and CRS in Vietnam. This is the first report of molecular investigation of wildtype RV strain in Vietnam, thus contributing to the documentation of RV's worldwide distribution.
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MESH Headings
- Abnormalities, Multiple/etiology
- Abnormalities, Multiple/virology
- Adult
- Cataract/congenital
- Cataract/etiology
- DNA, Viral/genetics
- Female
- Fetal Growth Retardation/etiology
- Heart Defects, Congenital/etiology
- Humans
- Infant, Newborn
- Infant, Premature
- Infant, Premature, Diseases/virology
- Infectious Disease Transmission, Vertical
- Male
- Microcephaly/etiology
- Molecular Sequence Data
- Phylogeny
- Pregnancy
- Pregnancy Complications, Infectious/virology
- Pregnancy Trimester, First
- Rubella/congenital
- Rubella/epidemiology
- Rubella/transmission
- Rubella/virology
- Rubella virus/classification
- Rubella virus/genetics
- Rubella virus/isolation & purification
- Vietnam/epidemiology
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Affiliation(s)
- Dinh Nguyen Tran
- Department of Developmental Medical Sciences, School of International Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Ha MT. Ethnic minority health. Equal access. Interview by Christina Potrykus. Nurs Stand 1995; 10:47. [PMID: 8562365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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