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Boseila AA, Ghareeb AZ, AbdElwahab MG, Seadawy MG, Al-Karmalawy AA, Yassa NW, Ghareeb DA. Throat spray formulated with virucidal Pharmaceutical excipients as an effective early prophylactic or treatment strategy against pharyngitis post-exposure to SARS CoV-2. Eur J Pharm Biopharm 2024:114279. [PMID: 38588829 DOI: 10.1016/j.ejpb.2024.114279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/19/2024] [Accepted: 04/05/2024] [Indexed: 04/10/2024]
Abstract
Our study aimed to develop a virucidal throat spray using bioactive compounds and excipients, focusing on the preparation of Curcumin (CUR) in a self-nano emulsifying drug delivery system (SNEDDS). Two molecular docking studies against SARS-CoV-2 targets guided the selection of proper oil, surfactant, co-surfactant, and natural bioactive that would maximize the antiviral activity of the throat spray. Two self-nanoemulsifying formulas that were diluted with different vehicles to prepare eight CUR-loaded SNESNS (self-nanoemulsifying self-nanosuspension) formulas. In vitro characterization studies and in vitro anti-SARS-CoV-2 effect revealed that the optimal formula, consisted of 20 % Anise oil, 70 % Tween 80, 10 % PEG 400, and 0.1 %w/w CUR, diluted with DEAE-Dx. Preclinical toxicity tests on male rats confirmed the safety of a mild throat spray dose (5 µg/mL CUR). In a rat model of acute pharyngitis induced by ammonia, post-treatment with the optimal formula of CUR loaded SNESNS for one week significantly reduced elevated proinflammatory markers (TNF-α, IL6, MCP1, and IL8). In conclusion, our CUR-loaded SNESNS formula, at 5 µg/mL concentration, shows promising effect as a prophylactic throat spray against SARS-CoV-2 and as a treatment for pharyngitis.
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Affiliation(s)
- Amira A Boseila
- Department of Pharmaceutics, Egyptian Drug Authority Formerly Known as National Organization for Drug Control and Research (NODCAR), Giza, Egypt; Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Sinai University, Kantara branch, Sinai 41636, Egypt.
| | - Ahmed Z Ghareeb
- Center of Excellence for Drug Preclinical Studies (CE-DPS), Pharmaceutical and Fermentation Industry Development Center, City of Scientific Research & Technological Applications, New Borg El Arab, Alexandria, Egypt
| | - Miral G AbdElwahab
- Center of Excellence for Drug Preclinical Studies (CE-DPS), Pharmaceutical and Fermentation Industry Development Center, City of Scientific Research & Technological Applications, New Borg El Arab, Alexandria, Egypt; Faculty of Technological Industry and Energy, Thebes Technological University, Thebes, Luxor 85863, Egypt
| | | | - Ahmed A Al-Karmalawy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Horus University-Egypt, New Damietta 34518, Egypt; Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 6th of October City, Giza 12566, Egypt.
| | - Nashwa W Yassa
- Bio‑Screening and Preclinical Trial Lab, Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt
| | - Doaa A Ghareeb
- Center of Excellence for Drug Preclinical Studies (CE-DPS), Pharmaceutical and Fermentation Industry Development Center, City of Scientific Research & Technological Applications, New Borg El Arab, Alexandria, Egypt; Bio‑Screening and Preclinical Trial Lab, Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt; Faculty of Technological Industry and Energy, Thebes Technological University, Thebes, Luxor 85863, Egypt.
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Ali IH, Elkashlan AM, Hammad MA, Hamdi M. Antimicrobial and anti-SARS-CoV-2 activities of smart daclatasvir-chitosan/gelatin nanoparticles-in-PLLA nanofibrous medical textiles; in vitro, and in vivo study. Int J Biol Macromol 2023; 253:127350. [PMID: 37838117 DOI: 10.1016/j.ijbiomac.2023.127350] [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: 08/06/2023] [Revised: 09/19/2023] [Accepted: 10/05/2023] [Indexed: 10/16/2023]
Abstract
This study aims at the development of electrospun polylactic acid nanofibers (PLLA NFs) incorporating smart daclatasvir-loaded chitosan gelatin nanoparticles to be used as medical textiles. First, smart nanoparticles were prepared through ionic gelation and optimized using Design Expert® software where daclatasvir (DAC), chitosan (CS), and gelatin (GL) amounts were selected to be the independent variables. DAC was used owing to its reported Anti-SARS-CoV-2 activity, CS was chosen due to its antimicrobial activity and GL was used owing to its sensitivity to be hydrolyzed upon exposure to Papain-like protease enzyme (PLpro). The optimum DAC-CS/TAN NPs possessed 109 nm size and 94.44 % entrapment efficiency in addition to sustained drug release for 14 days. Furthermore, upon exposure to PLpro, smart DAC-CS/GL NPs released the whole DAC amount within 3 h. Then, DAC-CS/GL NPs were incorporated within PLLA NFs through electrospinning. Swellability was found to increase gradually reflecting the controlled release of DAC from nanofibers within 3 weeks. Cell viability assessments using human fibroblasts showed that the developed nanofibers possess high biocompatibility. An in-vivo animal model for skin irritation was carried out for two weeks where visual inspection and histopathological investigations showed that neither edema nor erythema were observed.
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Affiliation(s)
- Isra H Ali
- Department of Pharmaceutics, Faculty of Pharmacy, University of Sadat City, P.O. Box 32897, Sadat City, Egypt.
| | - Akram M Elkashlan
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, P.O. Box 32897, Sadat City, Egypt
| | - Mohamed A Hammad
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, P.O. Box 32897, Sadat City, Egypt
| | - Mohamed Hamdi
- Department of Pharmaceutics, Faculty of Pharmacy, University of Sadat City, P.O. Box 32897, Sadat City, Egypt
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Cherrada N, Elkhalifa Chemsa A, Erol E, Günaydın Akyildiz A, Oyku Dinc H, Gheraissa N, Ghemam Amara D, Rebiai A, Abdel-Kader MS, Messaoudi M. Phytochemical profiling of Salsola tetragona Delile by LC-HR/MS and investigation of the antioxidant, anti-inflammatory, cytotoxic, antibacterial and anti-SARS-CoV-2 activities. Saudi Pharm J 2023; 31:101731. [PMID: 37638223 PMCID: PMC10448174 DOI: 10.1016/j.jsps.2023.101731] [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: 05/15/2023] [Accepted: 07/28/2023] [Indexed: 08/29/2023] Open
Abstract
This study aimed to investigate the phytochemical composition and biological activity of Salsola tetragona Delile. (Amaranthaceae), a medicinal plant. The study evaluated the antioxidant potential of the crude extract and five fractions of S. tetragona using DPPH•, ABTS•+, CUPRAC, and metal chelating assays. The anti-inflammatory activity was determined using a protein denaturation assay, and the antibacterial activity was determined by the Minimum inhibitory concentrations (MICs) for the growth of Escherichia coli and Staphylococcus aureus strains. The MTT test and an in vitro scratch assay evaluated the effects on cell viability and cell migration. The potential anti-SARS-CoV-2 activity was assessed by analyzing the effects on the interaction between ACE2 and Spike protein. The bioactive compounds present in the plant were identified using LC-HR/MS analysis. The crude hydromethanolic extract (STM) and five fractions of S. tetragona, n-hexane (STH), dichloromethane (STD), ethyl acetate (STE), n-butanol (STB), and aqueous (STW) showed significant antioxidant activity in four different tests. In the anti-inflammatory assay, the ethyl acetate fraction exhibited significantly higher activity than Aspirin® (IC50 = 13 ± 5 µg/mL). The crude extract and its fractions showed positive antibacterial activity with similar MICs. In the cytotoxicity assay against the breast cancer cell line MCF7, the dichloromethane fractions (STD) were very effective and demonstrated superiority over the other fractions (IC50 = 98 µg/mL). Moreover, the potential of the extract and fractions as anti-SARS-CoV-2, the ethyl acetate, and dichloromethane fractions demonstrated important activity in this test. LC-HR/MS analysis identified 16 different phenolic compounds, Eleven of which had not been previously reported in the genus Salsola. The results suggest that the extracts of S. tetragona have the potential to become new sources for developing plant-based therapies for managing a range of diseases.
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Affiliation(s)
- Nezar Cherrada
- El Oued University, Faculty of Life and Natural Sciences, Department of Cellular and Molecular Biology, Algeria
- El Oued University, Laboratory of Biodiversity and Application of Biotechnology in Agriculture, Algeria
| | - Ahmed Elkhalifa Chemsa
- El Oued University, Laboratory of Biodiversity and Application of Biotechnology in Agriculture, Algeria
- El Oued University, Faculty of Life and Natural Sciences, Department of Biology, Algeria
| | - Ebru Erol
- Department Of Analytical Chemistry, Faculty of Pharmacy, Bezmialem Vakif University, Istanbul, Turkey
| | - Aysenur Günaydın Akyildiz
- Department Of Pharmaceutical Toxicology, Faculty of Pharmacy, Bezmialem Vakif University, Istanbul 34093, Turkey
| | - Harika Oyku Dinc
- Department Of Pharmaceutical Microbiology, Faculty of Pharmacy, Bezmialem Vakif University, Istanbul, Turkey
| | - Noura Gheraissa
- El Oued University, Faculty of Life and Natural Sciences, Department of Cellular and Molecular Biology, Algeria
- El Oued University, Laboratory of Biodiversity and Application of Biotechnology in Agriculture, Algeria
| | - Djilani Ghemam Amara
- El Oued University, Faculty of Life and Natural Sciences, Department of Cellular and Molecular Biology, Algeria
- El Oued University, Laboratory Biology, Environment And Health, Algeria
| | - Abdelkrim Rebiai
- Chemistry Department, Faculty of Exact Sciences, University of El Oued, P.O. Box 789, El Oued 39000, Algeria
- Renewable Energy Development unit in Arid Zones (UDERZA), University of El Oued, El Oued 39000, Algeria
| | - Maged S. Abdel-Kader
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
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Wang Z, Gao H. Anti-inflammatory or anti-SARS-CoV-2 ingredients in Huashi Baidu Decoction and their corresponding targets: Target screening and molecular docking study. ARAB J CHEM 2023; 16:104663. [PMID: 36816510 PMCID: PMC9928610 DOI: 10.1016/j.arabjc.2023.104663] [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: 10/29/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/17/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) is a rapidly emerging infectious disease caused by SARS-CoV-2. Inflammatory factors may play essential roles in COVID-19 progression. Huashi Baidu Decoction (HSBD) is a traditional Chinese medicine (TCM) formula that can expel cold, dispel dampness, and reduce inflammation. HSBD has been widely used for the treatment of COVID-19. However, the active ingredients and potential targets for HSBD to exert anti-inflammatory or anti-SARS-CoV-2 effects remain unclear. In this paper, the active ingredients with anti-inflammatory or anti-viral effects in HSBD and their potential targets were screened using the Discovery Studio 2020 software. By overlapping the targets of HSBD and COVID-19, 8 common targets (FYN, SFTPD, P53, RBP4, IL1RN, TTR, SRPK1, and AKT1) were identified. We determined 2 key targets (P53 and AKT1) by network pharmacology. The main active ingredients in HSBD were evaluated using the key targets as receptor proteins for molecular docking. The results suggested that the best active ingredients Kaempferol2 and Kaempferol3 have the potential as supplements for the treatment of COVID-19.
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Affiliation(s)
| | - Hongwei Gao
- Corresponding author at: Prof Hongwei Gao: School of Life Science, Ludong University, Yantai, Shandong, 264025, China
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Maurya AK, Sharma P, Samanta P, Shami AA, Misra SK, Zhang F, Thara R, Kumar D, Shi D, Linhardt RJ, Sharp JS, Doerksen RJ, Tandon R, Pomin VH. Structure, anti-SARS-CoV-2, and anticoagulant effects of two sulfated galactans from the red alga Botryocladia occidentalis. Int J Biol Macromol 2023; 238:124168. [PMID: 36963552 PMCID: PMC10175164 DOI: 10.1016/j.ijbiomac.2023.124168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/13/2023] [Accepted: 03/21/2023] [Indexed: 03/26/2023]
Abstract
The structure of the sulfated galactan from the red alga Botryocladia occidentalis (BoSG) was originally proposed as a simple repeating disaccharide of alternating 4-linked α-galactopyranose (Galp) and 3-linked β-Galp units with variable sulfation pattern. Abundance was estimated only for the α-Galp units: one-third of 2,3-disulfation and one-third of 2-monosulfation. Here, we isolated again the same BoSG fractions from the anion-exchange chromatography, obtaining the same NMR profile of the first report. More careful NMR analysis led us to revise the structure. A more complex sulfation pattern was noted along with the occurrence of 4-linked α-3,6-anhydro-Galp (AnGalp) units. Interestingly, the more sulfated BoSG fraction showed slightly reduced in vitro anti-SARS-CoV-2 activities against both wild-type and delta variants, and significantly reduced anticoagulant activity. The BoSG fractions showed no cytotoxic effects. The reduction in both bioactivities is attributed to the presence of the AnGalp unit. Docking scores from computational simulations using BoSG disaccharide constructs on wild-type and delta S-proteins, and binding analysis through competitive SPR assays using blood (co)-factors (antithrombin, heparin cofactor II and thrombin) and four S-proteins (wild-type, delta, gamma, and omicron) strongly support the conclusion about the deleterious impact of the AnGalp unit.
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Affiliation(s)
- Antim K Maurya
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS, USA
| | - Poonam Sharma
- Center for Immunology and Microbial Research, Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Priyanka Samanta
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS, USA
| | - Anter A Shami
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS, USA
| | - Sandeep K Misra
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS, USA
| | - Fuming Zhang
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Reena Thara
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS, USA
| | - Deepak Kumar
- Center for Immunology and Microbial Research, Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Deling Shi
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Robert J Linhardt
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Joshua S Sharp
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS, USA; Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS, USA; Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Robert J Doerksen
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS, USA; Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS, USA
| | - Ritesh Tandon
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS, USA; Center for Immunology and Microbial Research, Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS, USA; Department of Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - Vitor H Pomin
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS, USA; Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS, USA.
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Oliveira VDS, Silva CC, de Freitas Oliveira JW, da Silva MDS, Ferreira PG, da Siva FDC, Ferreira VF, Barbosa EG, Barbosa CG, Moraes CB, Freitas-Junior LHGD, Converti A, Lima ÁAND. The evaluation of in vitro antichagasic and anti-SARS-CoV-2 potential of inclusion complexes of β- and methyl-β-cyclodextrin with naphthoquinone. J Drug Deliv Sci Technol 2023; 81:104229. [PMID: 36776572 PMCID: PMC9905044 DOI: 10.1016/j.jddst.2023.104229] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 01/19/2023] [Accepted: 02/01/2023] [Indexed: 02/10/2023]
Abstract
The compound 3a,10b-dihydro-1H-cyclopenta[b]naphtho[2,3-d]furan-5,10-dione (IVS320) is a naphthoquinone with antifungal and antichagasic potential, which however has low aqueous solubility. To increase bioavailability, inclusion complexes with β-cyclodextrin (βCD) and methyl-β-cyclodextrin (MβCD) were prepared by physical mixture (PM), kneading (KN) and rotary evaporation (RE), and their in vitro anti-SARS-CoV-2 and antichagasic potential was assessed. The formation of inclusion complexes led to a change in the physicochemical characteristics compared to IVS320 alone as well as a decrease in crystallinity degree that reached 74.44% for the IVS320-MβCD one prepared by RE. The IVS320 and IVS320-MβCD/RE system exhibited anti-SARS-CoV-2 activity, showing half maximal effective concentrations (EC50) of 0.47 and 1.22 μg/mL, respectively. Molecular docking simulation suggested IVS320 ability to interact with the SARS-CoV-2 viral protein. Finally, the highest antichagasic activity, expressed as percentage of Tripanosoma cruzi growth inhibition, was observed with IVS320-βCD/KN (70%) and IVS320-MβCD/PM (72%), while IVS320 alone exhibited only approximately 48% inhibition at the highest concentration (100 μg/mL).
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Affiliation(s)
- Verônica da Silva Oliveira
- Department of Pharmacy, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59012-570, Brazil
| | - Cláudia Cândida Silva
- School of Technology, State University of Amazonas, Manaus, Amazonas, 69065-020, Brazil
| | - Johny Wysllas de Freitas Oliveira
- Department of Pharmacy, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59012-570, Brazil
| | - Marcelo de Sousa da Silva
- Department of Pharmacy, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59012-570, Brazil
- Global Health and Tropical Medicine, Institute of Hygiene and Tropical Medicine, NOVA University Lisbon, Lisbon, 1800-166, Portugal
| | - Patricia Garcia Ferreira
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Fluminense Federal University, Niterói, Rio de Janeiro, 24241-002, Brazil
| | | | - Vitor Francisco Ferreira
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Fluminense Federal University, Niterói, Rio de Janeiro, 24241-002, Brazil
| | - Euzébio Guimarães Barbosa
- Department of Pharmacy, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59012-570, Brazil
| | - Cecília Gomes Barbosa
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, São Paulo, 05508-900, Brazil
| | - Carolina Borsoi Moraes
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, São Paulo, 05508-900, Brazil
- Department of Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, São Paulo, 09913-030, Brazil
| | | | - Attilio Converti
- Department of Civil, Chemical and Environmental Engineering, University of Genoa, Pole of Chemical Engineering, via Opera Pia 15, 16145, Genoa, Italy
| | - Ádley Antonini Neves de Lima
- Department of Pharmacy, Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59012-570, Brazil
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Msemo OA, Pérez-Alós L, Minja DT, Hansen CB, Gesase S, Mtove G, Mbwana J, Larsen VML, Bøgestad ECS, Grunnet LG, Christensen DL, Bygbjerg IC, Burgner D, Schmiegelow C, Garred P, Hjort L. High anti-SARS-CoV-2 seroprevalence among unvaccinated mother-child pairs from a rural setting in north-eastern Tanzania during the second wave of COVID-19. IJID Reg 2023; 6:48-57. [PMID: 36466214 PMCID: PMC9709504 DOI: 10.1016/j.ijregi.2022.11.011] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022]
Abstract
Background The reported infection rates and burden of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in low- and middle-income countries, including those in sub-Saharan Africa, are relatively low compared to the rates and burden in Europe and America, partly due to limited testing capability. Unlike many countries, Tanzania has implemented neither mass screening nor restrictive measures such as lockdowns to date. The prevalence of SARS-CoV-2 infection in rural mainland Tanzania is largely unknown. Methods A cross-sectional study was conducted between April and October 2021 to assess the anti-SARS-CoV-2 seroprevalence among mother-child pairs (n = 634 children, n = 518 mothers) in a rural setting in north-eastern Tanzania. Results A very high prevalence of anti-SARS-CoV-2 antibody titres was found, with seroprevalence rates ranging from 29% among mothers and 40% among children, with a dynamic peak in seropositivity incidence at the end of July/early August being revealed. Significant differences in age, socioeconomic status, and body composition were associated with seropositivity in mothers and children. No significant associations were observed between seropositivity and comorbidities, including anaemia, diabetes, malaria, and HIV. Conclusions The transmission of SARS-CoV-2 in a rural region of Tanzania during 2021 was high, indicating a much higher infection rate in rural Tanzania compared to that reported in the UK and USA during the same period. Ongoing immune surveillance may be vital to monitoring the burden of viral infection in rural settings without access to molecular genotyping, where the load of communicable diseases may mask COVID-19. Surveillance could be implemented in tandem with the intensification of vaccination strategies.
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Affiliation(s)
- Omari Abdul Msemo
- National Institute for Medical Research, Tanga Centre, Tanga, Tanzania
| | - Laura Pérez-Alós
- Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Daniel T.R. Minja
- National Institute for Medical Research, Tanga Centre, Tanga, Tanzania
| | - Cecilie Bo Hansen
- Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Samwel Gesase
- National Institute for Medical Research, Tanga Centre, Tanga, Tanzania
| | - George Mtove
- National Institute for Medical Research, Tanga Centre, Tanga, Tanzania
| | - Joyce Mbwana
- National Institute for Medical Research, Tanga Centre, Tanga, Tanzania
| | - Victoria Marie Linderod Larsen
- Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark,Department of Technology, Faculty of Health, University College Copenhagen, Copenhagen, Denmark
| | - Emilie Caroline Skuladottir Bøgestad
- Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark,Department of Technology, Faculty of Health, University College Copenhagen, Copenhagen, Denmark
| | | | - Dirk Lund Christensen
- Global Health Section, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Ib Christian Bygbjerg
- Global Health Section, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - David Burgner
- Murdoch Children's Research Institute, Melbourne, Victoria, Australia,Department of Paediatrics, Melbourne University, Melbourne, Victoria, Australia
| | - Christentze Schmiegelow
- Centre for Medical Parasitology, Department of Immunology and Microbiology, University of Copenhagen and Department of Infectious Diseases, Copenhagen University Hospital, Copenhagen, Denmark,Department of Obstetrics, Copenhagen University Hospital, Copenhagen, Denmark
| | - Peter Garred
- Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Line Hjort
- Novo Nordisk Foundation Centre for Basic Metabolic Research, Metabolic Epigenetics Group, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark,Corresponding author: Line Hjort, he Novo Nordisk Foundation Centre for Basic Metabolic Research, Metabolic Epigenetics Group, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Wahyuni DK, Wacharasindhu S, Bankeeree W, Punnapayak H, Prasongsuk S. In silico anti-SARS-CoV-2, antiplasmodial, antioxidant, and antimicrobial activities of crude extracts and homopterocarpin from heartwood of Pterocarpus macrocarpus Kurz. Heliyon 2023; 9:e13644. [PMID: 36789389 PMCID: PMC9912040 DOI: 10.1016/j.heliyon.2023.e13644] [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: 04/06/2022] [Revised: 01/27/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023] Open
Abstract
Natural products play an essential role in new drug discovery. In the present study, we determined the anti-SARS-CoV-2 (severe acute respiratory syndrome-related coronavirus-2), antioxidant, antiplasmodial, and antimicrobial activities of Pterocarpus macrocarpus Kurz. heartwood and structurally characterized the bioactive compounds. P. macrocarpus Kurz. heartwood was macerated with n-hexane, ethyl acetate, and ethanol, respectively, for 7 days, three times. The compounds were isolated by recrystallization with n-hexane and evaluated by thin-layer chromatography (TLC), gas chromatography-mass spectrophotometry (GC-MS), Fourier transform infrared spectroscopy (FITR), and nuclear magnetic resonance (NMR) spectroscopy. Ethyl acetate, ethanol, n-hexane extracts, and homopterocarpin exhibited antiplasmodial activity at 1.78, 2.21, 7.11, and 0.52 μg/ml, respectively, against P. falciparum 3D7 with low toxicity (selectivity index/SI ≥ 28.46). GC-MS identified compound showed in silico anti-SARS-CoV-2 binding affinity with stigmasterol and SARS-CoV-2 helicase of -8.2 kcal/mol. Ethyl acetate extract exhibited the best antioxidant activity against DPPH (0.76 ± 0.92 μg/ml) and ABTS (0.61 ± 0.46 μg/ml). They also demonstrated antimicrobial activity against B. subtilis, ethanol and ethyl acetate extracts against E. coli and C. albicans, and ethanol extract against S. aureus with diameter zone of inhibition of more than 1 cm. The results highlighted antiplasmodial activity of extracts and homopterocarpin from P. macrocarpus Kurz. heartwood and its potent binding in silico to anti-SARS-CoV-2 proteins with low toxicity. This study also confirmed that extracts exhibited antioxidant and antimicrobial activities. Further studies are needed to assess the safety and clinical trial of P. macrocarpus Kurz. for development as new drug candidate.
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Affiliation(s)
- Dwi Kusuma Wahyuni
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya, East Java, 60115, Indonesia
| | - Sumrit Wacharasindhu
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Wichanee Bankeeree
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Hunsa Punnapayak
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Sehanat Prasongsuk
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya, East Java, 60115, Indonesia
- Corresponding author. Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
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Mizuta S, Mosaddeque F, Tun MMN, Teklemichael AA, Taniguchi M, Hosokawa M, Yamaguchi T, Makau J, Huy NT, Mizukami S, Nishida N, Morita K, Hirayama K. Challenges Based on Antiplasmodial and Antiviral Activities of 7-Chloro-4-aminoquinoline Derivatives. ChemMedChem 2023; 18:e202200586. [PMID: 36734179 DOI: 10.1002/cmdc.202200586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023]
Abstract
We report the structural functionalization of the terminal amino group of N1 -(7-chloroquinolin-4-yl) butane-1,4-diamine, leading to a series of 7-chloro-4-aminoquinoline derivatives, and their evaluation as potent anti-malarial and anti-viral agents. Some compounds exhibited promising anti-malarial effects against the Plasmodium falciparum 3D7 (chloroquine-sensitive) and Dd2 (chloroquine-resistant) strains. In addition, these compounds were assayed in vitro against influenza A virus (IAV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Compound 5 h, bearing an N-mesityl thiourea group, displayed pronounced anti-infectious effects against malaria, IAV, and SARS-CoV-2. These results provide new insights into drug discovery for the prevention or treatment of malaria and virus co-infection.
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Affiliation(s)
- Satoshi Mizuta
- Center for Bioinformatics and Molecular Medicine, Nagasaki University, 1-14 Bunkyo, 852-8521, Nagasaki, Japan
| | - Farhana Mosaddeque
- Department of Immunogenetics Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, 852-8523, Nagasaki, Japan
| | - Mya Myat Ngwe Tun
- Department of Virology Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, 852-8523, Nagasaki, Japan
| | - Awet Alem Teklemichael
- Department of Immune Regulation Shionogi Global Infectious Diseases Division, Nagasaki University, 1-12-4 Sakamoto, 852-8523, Nagasaki, Japan
| | - Mayumi Taniguchi
- Department of Immune Regulation Shionogi Global Infectious Diseases Division, Nagasaki University, 1-12-4 Sakamoto, 852-8523, Nagasaki, Japan
| | - Masashi Hosokawa
- School of Medicine, Nagasaki University, 1-12-4 Sakamoto, 852-8523, Nagasaki, Japan
| | - Tomoko Yamaguchi
- Center for Bioinformatics and Molecular Medicine, Nagasaki University, 1-14 Bunkyo, 852-8521, Nagasaki, Japan
| | - Juliann Makau
- Center for Virus Research, Kenya Medical Research Institute, 54840-00200, Nairobi, Kenya
| | - Nguyen Tien Huy
- Department of Immunogenetics Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, 852-8523, Nagasaki, Japan.,School of Tropical Medicine and Global Health, Nagasaki University, 1-12-4 Sakamoto, 852-8102>, Nagasaki, Japan
| | - Shusaku Mizukami
- Department of Immune Regulation Shionogi Global Infectious Diseases Division, Nagasaki University, 1-12-4 Sakamoto, 852-8523, Nagasaki, Japan
| | - Noriyuki Nishida
- Department of Molecular Microbiology and Immunology, Nagasaki University, 1-12-4 Sakamoto, 852-8102, Nagasaki, Japan
| | - Kouichi Morita
- Department of Virology Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, 852-8523, Nagasaki, Japan.,Dejima Infectious Disease Research Alliance, Nagasaki University, Nagasaki, 852-8523, Japan
| | - Kenji Hirayama
- Department of Immunogenetics Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, 852-8523, Nagasaki, Japan.,School of Tropical Medicine and Global Health, Nagasaki University, 1-12-4 Sakamoto, 852-8102>, Nagasaki, Japan
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Xu J, Shi S, Liu G, Xie X, Li J, Bolinger AA, Chen H, Zhang W, Shi PY, Liu H, Zhou J. Design, synthesis, and pharmacological evaluations of pyrrolo[1,2-a]quinoxaline-based derivatives as potent and selective sirt6 activators. Eur J Med Chem 2023; 246:114998. [PMID: 36508969 PMCID: PMC9805530 DOI: 10.1016/j.ejmech.2022.114998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/21/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
Sirt6 activation has emerged as a promising drug target for the treatment of various human diseases, while only limited Sirt6 activators have been reported. Herein, a series of novel pyrrolo[1,2-a]quinoxaline-based derivatives have been identified as potent and selective Sirt6 activators with low cytotoxicity. Sirt6-knockdown findings have validated the on-target effects of this class of Sirt6 activators. Docking studies indicate the protonated nitrogen on the side chain of 38 forms π-cation interactions with Trp188, further stabilizing it into this extended binding pocket. New compounds 35, 36, 38, 46, 47, and 50 strongly repressed LPS-induced proinflammatory cytokine/chemokine production, while 38 also significantly suppressed SARS-CoV-2 infection with an EC50 value of 9.3 μM. Moreover, compound 36 significantly inhibited the colony formation of cancer cells. These new molecules may serve as useful pharmacological tools or potential therapeutics against cancer, inflammation, and infectious diseases.
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Affiliation(s)
- Jimin Xu
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Shuizhen Shi
- Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Gang Liu
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Xuping Xie
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Jun Li
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Andrew A Bolinger
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Haiying Chen
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Wenbo Zhang
- Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Pei-Yong Shi
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Hua Liu
- Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch, Galveston, TX, 77555, USA.
| | - Jia Zhou
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX, 77555, USA.
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11
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Alobaidi AH, Mustafa HI, Salih AM, Alsamarai AM. Anti- SARS-CoV-2 IgG and IgM Levels in Iraqi General Population. Antiinflamm Antiallergy Agents Med Chem 2023; 22:113-129. [PMID: 37842890 DOI: 10.2174/0118715230269593230928095153] [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: 06/28/2023] [Revised: 08/24/2023] [Accepted: 08/28/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND Acquired immunity plays an important role in the prevention of viral infections. SARS-CoV-2 is an infection that leads to a pandemic. The development of specific anti-SARSCoV- 2 antibodies may play a vital role in disease prevention and control. Thus IgG antibody screening in the general population provides information on the immunological status of the community. AIM To clarify the SARS-CoV-2 immune status in the general population. METHODS A cross-sectional study was conducted in Kirkuk province during the period from 15 May 2022 to 11 September 2022. The samples were collected from voluntary subjects and informed consent was taken from each participant before their enrolment in the study. SARS-CoV-2 IgG, SARSCoV- 2 IgM, 25-OH Vitamin D, Vitamin B12, and Folate were determined using the Electrochemiluminescence Immunoassay (eCLIA) technique with the instrument NIPIGON-Robot R1Automated ECL Analyzer (Canada). RESULTS The overall IgG mean concentration was 37.75 ± 23.18 COI, with a median of 39.99 COI and a range of 0.25 - 87.23 COI. Additionally, 93% of tested samples were with concentrations of more than 1 COI. The highest frequency (18.2%) was for the IgG concentration of 51 to 60 COI, while the lowest frequency (1.3%) was for the concentration of 81 - 90 COI. The IgG was significantly higher (P = 0.046) in males (39.87 ± 24.04 COI) than that in females (35.12 ± 21.89 COI). The IgM overall concentration was 0.569 ± 0.456 COI, with a median of 0.489 COI and a range of 0.17 - 6.40 COI. The mean serum level of folic acid concentration was 9.03 ± 5.72 ng/ml, with a median of 7.476 ng/ml and a range of 0.60 - 20.00 ng/ml. The mean serum concentration of vitamin B12 was 462.65 ± 349.18 pg/ml, with a median of 353 pg/ml and a range of 13.05 - 2000 pg/ml. The mean serum concentration of vitamin D was 18.29 ± 18.42 ng/ml with a median of 12.44 ng/ml and a range of 3 - 100 ng/ml. IgG and IgM serum levels did not show a significant correlation with serum levels of folic acid, vitamin D, and vitamin B12. However, there was a significant correlation between folic acid and vitamin D (r = 0.197; P = 0.012); vitamin B12 and vitamin D (r = 0.253, P = 0.001). While there was a non-significant correlation between folic acid and vitamin D serum levels (r = 0.129, P = 0.10). CONCLUSION General population IgG antibody concentration reflects a high rate of herd immunity. Folic acid was with a mean value of about half of the upper normal limit and only 17.7% were with low values. Vitamin B12, only 6.3% of the population had values lower than normal. However, the range of vitamin B12 was wide. While vitamin D values were lower than the normal limit at 82.6%. However, a large scale well designed was warranted to evaluate COVID-19 national immune response.
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Affiliation(s)
- Amina Hamed Alobaidi
- Department of Biochemistry, Kirkuk University College of Medicine, [KUCOM] Kirkuk, Iraq
| | | | - Ahmed Mutar Salih
- Department of Biochemistry, Kirkuk University College of Medicine, [KUCOM] Kirkuk, Iraq
| | - Abdulghani Mohamed Alsamarai
- Department of Infectious Disease, Tikrit University College of Medicine, [TUCOM], Tikrit, Iraq
- Al-Qalam University College, Kirkuk, Iraq
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12
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Gu L, Liu Y, Zhang W, Li J, Chang C, Su Y, Yang Y. Novel extraction technologies and potential applications of egg yolk proteins. Food Sci Biotechnol 2022; 32:121-133. [PMID: 36590017 PMCID: PMC9795146 DOI: 10.1007/s10068-022-01209-6] [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: 07/14/2022] [Revised: 11/07/2022] [Accepted: 11/14/2022] [Indexed: 12/29/2022] Open
Abstract
The high nutritional value and diverse functional properties of egg yolk proteins have led to its widespread use in the fields of food, medicine, and cosmetics. Various extraction methods have been reported to obtain the proteins from egg yolk, however, their utilization is limited due to the relatively low extraction efficiency and/or toxic solvents involved. Several simpler and greener technologies, especially physical fields (ultrasound), have been successfully developed to improve the extraction efficiency. The egg yolk proteins may exert multiple biological activities, enabling them to be a promising tool in improve human health and wellbeing, such as anti-obesity, anti-atherosclerosis, anti-osteoporosis, diagnosis and therapy for SARS-CoV-2 infections. This article summarizes the novel extraction technologies and latest applications of the egg yolk proteins in the recent 5 years, which should stimulate their utilization as health-promoting functional ingredients in foods and other commercial products.
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Affiliation(s)
- Luping Gu
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyCollaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, 214122 China ,Hunan Engineering & Technology Research Center for Food Flavors and Flavorings, Jinshi, 415400 Hunan China
| | - Yufang Liu
- College of Food Engineering and Nutritional Science, Shanxi Normal University, Xi’an, China
| | - Wanqiu Zhang
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyCollaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, 214122 China
| | - Junhua Li
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyCollaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, 214122 China
| | - Cuihua Chang
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyCollaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, 214122 China
| | - Yujie Su
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyCollaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, 214122 China ,Hunan Engineering & Technology Research Center for Food Flavors and Flavorings, Jinshi, 415400 Hunan China
| | - Yanjun Yang
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyCollaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, 214122 China ,Hunan Engineering & Technology Research Center for Food Flavors and Flavorings, Jinshi, 415400 Hunan China
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13
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Xu J, Yang W, Pan Y, Xu H, He L, Zheng B, Xie Y, Wu X. Lucidenic acid A inhibits the binding of hACE2 receptor with spike protein to prevent SARS-CoV-2 invasion. Food Chem Toxicol 2022; 169:113438. [PMID: 36179993 PMCID: PMC9526994 DOI: 10.1016/j.fct.2022.113438] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 09/07/2022] [Accepted: 09/15/2022] [Indexed: 11/20/2022]
Abstract
High infection caused by mutations of SARS-CoV-2 calls for new prevention strategy. Ganoderma lucidum known as a superior immunoenhancer exhibits various antiviral effects, whether it can resist SARS-CoV-2 remains unclear. Herein, virtual screening combined with in vitro hACE2 inhibition assays were used to investigate its anti SARS-CoV-2 effect. Potential 54 active components, 80 core targets and 20 crucial pathways were identified by the component-target-pathway network. The binding characters of these components to hACE2 and its complexes with spike protein including omicron variant was analyzed by molecular docking. Lucidenic acid A was selected as the top molecule with high affinity to all receptors by forming hydrogen bonds. Molecular dynamics simulation showed it had good binding stability with the receptor proteins. Finally, in vitro FRET test demonstrated it inhibited the hACE2 activity with IC50 2 μmol/mL. Therefore, lucidenic acid A can prevent the virus invasion by blocking hACE2 binding with SARS-CoV-2.
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Affiliation(s)
- Juan Xu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, 311300, PR China; Zhejiang Provincial Key Laboratory of Characteristic Traditional Chinese Medicine Resources Protection and Innovative Utilization, Zhejiang A&F University, Lin'an, 311300, PR China
| | - WenTao Yang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, 311300, PR China; Zhejiang Provincial Key Laboratory of Characteristic Traditional Chinese Medicine Resources Protection and Innovative Utilization, Zhejiang A&F University, Lin'an, 311300, PR China
| | - YiFeng Pan
- Hangzhou Xihu District Center for Disease Control and Prevention, Hangzhou, 310030, PR China
| | - HaiShun Xu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, 311300, PR China
| | - Liang He
- Zhejiang Provincial Academy of Forestry, Hangzhou, 310000, Zhejiang, China
| | - BingSong Zheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, 311300, PR China
| | - YingQiu Xie
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - XueQian Wu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, 311300, PR China; Zhejiang Provincial Key Laboratory of Characteristic Traditional Chinese Medicine Resources Protection and Innovative Utilization, Zhejiang A&F University, Lin'an, 311300, PR China; National Innovation Alliance of Lingzhi and Sanyeqing Industry, Lin'an, 311300, China.
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14
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Lu JG, Wang Y, Yang MR, Wang CY, Meng J, Liu J, Yang Z, Wu K, Bai LP, Zhu GY, Jiang ZH. Structures, biomimetic synthesis, and anti-SARS-CoV-2 activity of two pairs of enantiomeric phenylpropanoid-conjugated protoberberine alkaloids from the rhizomes of Corydalis decumbens. Arch Pharm Res 2022. [PMID: 36121609 DOI: 10.1007/s12272-022-01401-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 08/03/2022] [Indexed: 11/13/2022]
Abstract
(±)-Decumicorine A (1) and (±)-epi-decumicorine A (2), two pairs of enantiomeric isoquinoline alkaloids featuring a novel phenylpropanoid-conjugated protoberberine skeleton, were isolated and purified from the rhizomes of Corydalis decumbens. The separation of (±)-1 and (±)-2 was achieved by chiral HPLC to produce four optically pure enantiomers. The structures and absolute configurations of compounds (−)-1, (+)-1, (−)-2, and (+)-2 were elucidated by spectroscopic analysis, ECD calculations, and X-ray crystallographic analyses. The two racemates were generated from a Diels-Alder [4 + 2] cycloaddition between jatrorrhizine and ferulic acid in the proposed biosynthetic pathways, which were fully verified by a biomimetic synthesis. Moreover, compound (+)-1 exhibited an antiviral entry effect on SARS-CoV-2 pseudovirus by blocking spike binding to the ACE2 receptor on HEK-293T-ACE2h host cells.
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Yigit M, Ozkaya-Parlakay A, Cosgun Y, Ince YE, Kalayci F, Yilmaz N, Senel E. Antibody response after a booster dose of BNT162B2mRNA and inactivated COVID-19 vaccine. J Clin Virol Plus 2022; 2:100094. [PMID: 35789553 PMCID: PMC9242696 DOI: 10.1016/j.jcvp.2022.100094] [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: 01/21/2022] [Revised: 05/13/2022] [Accepted: 06/23/2022] [Indexed: 11/24/2022] Open
Abstract
Introduction The necessity of a booster dose is a matter that has not been as yet illuminated, although it is noted that neutralizing antibody titers decrease over time. We aimed therefore to evaluate antibody titers and seroconversion rates after a booster mRNA vaccine and a booster inactivated vaccine. Methods A total of 322 participants were divided into three main groups, with two subgroups each, based on their vaccinations and previous infection history. The levels of anti-SARS-CoV-2 Ig-G were analyzed with the Elecsys® Anti-SARS-CoV-2 S assay. Results The antibody titers showed a linear and significant increase from one vaccine group to the other, displaying progressive changes from group 2IV to group 3IV, and then to group 2IV/mRNA. All of the seronegative participants were in the 2IV(-) subgroup; 93.3% of the participants whose antibody titers were above the upper limit were in the 2IV/mRNA group. Doctors were much more inclined to have a booster dose and mRNA vaccines than nurses. The status of being a doctor increases the rate of having a booster dose 7.8 times; likewise, each annual increase in age increases the rate 1.05 times. Conclusion Anti-SARS-CoV-2 IgG levels decrease over time. The antibody response rate to only two doses of the inactivated vaccine was meager, so a booster dose is necessary to maintain the effectiveness of inactivated vaccines. The third dose of the vaccine, especially that of the mRNA vaccine, which was found to be much more superior to the inactivated vaccine, should be strongly recommended.
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Affiliation(s)
- Metin Yigit
- Department of Pediatrics, Ankara City Hospital, 06800-Bilkent, Ankara, Turkey
| | - Aslinur Ozkaya-Parlakay
- Division of Pediatric Infectious Disease, Department of Pediatrics, Yildirim Beyazit University, Ankara City Hospital, 06800-Bilkent, Ankara, Turkey
| | - Yasemin Cosgun
- National Arboviruses and Viral Zoonotic Diseases Laboratory, Microbiology Reference Laboratories Department, Public Health General Directorate of Turkey, 06100-Sihhiye, Ankara, Turkey
| | - Yunus Emre Ince
- Department of Pediatrics, Ankara City Hospital, 06800-Bilkent, Ankara, Turkey
| | - Furkan Kalayci
- Department of Pediatrics, Ankara City Hospital, 06800-Bilkent, Ankara, Turkey
| | - Naci Yilmaz
- Department of Pediatrics, Ankara City Hospital, 06800-Bilkent, Ankara, Turkey
| | - Emrah Senel
- Department of Pediatric Surgery, Yildirim Beyazit University, Ankara City Hospital, 06800-Bilkent, Ankara, Turkey
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Latha D, Hrishikesh D, Shiban G, Chandrashekar C, Bharath BR. In silico, in vitro screening of plant extracts for anti-SARS-CoV-2 activity and evaluation of their acute and sub-acute toxicity. Phytomed Plus 2022; 2:100233. [PMID: 35403091 PMCID: PMC8801592 DOI: 10.1016/j.phyplu.2022.100233] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/21/2022] [Accepted: 01/29/2022] [Indexed: 04/18/2023]
Abstract
BACKGROUND In the absence of a specific drug for COVID 19, treatment with plant extracts could be an option worthy of further investigation and has motivated to evaluate the safety and anti-SARS-CoV-2 activity of plant extracts. PURPOSE To screen the phytochemicals for anti-SARS-CoV-2 in silico and evaluate their safety and efficacy in vitro and in vivo. METHOD The phytochemicals for anti-SARS-CoV-2 were screened in silico using molecular docking. The hits generated from in silico screening were subjected for extraction, isolation and purification. The anti-SARS-CoV-2 activity of Zanthoxylum piperitum (E1), Withania somnifera (E2), Calophyllum inophyllum (E3), Andrographis paniculata (E4), Centella asiatica (E5) ethanol extracts. The aerial parts were used for E1, E3, E4, E5 and root was used for E2. The in vitro safety and anti-SARS-CoV-2 activity of plant methanol extracts were performed in VeroE6 cells using Remdesivir as positive control. The acute and sub-acute toxicity study was performed in Wistar male and female rats. RESULTS The percentage of cell viability for E4, E5 and E2 treated VeroE6 cells were remarkably good on the 24th and 48th hour of treatment. The in vitro anti-SARS-CoV-2 activity of E4, E5 and E2 were significant for both E gene and N gene. The percentage of SARS-CoV-2 inhibition for E4 was better than Remdesivir. For E gene and N gene, Remdesivir showed IC50 of 0.15 µM and 0.11 µM respectively, For E gene and N gene, E4 showed IC50 of 1.18 µg and 1.16 µg respectively. Taking the clue from in vitro findings, the E4, E5 and E2 were combined (E 4.5.2) and evaluated for acute and sub-acute toxicity in Wistar male and female rats. No statistically significant difference in haematological, biochemical and histopathological parameters were noticed. CONCLUSION The study demonstrated the anti-SARS-CoV-2 activity in vitro and safety of plant extracts in both in vitro and in vivo experimental conditions.
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Affiliation(s)
- Damle Latha
- Computational Biology, Atrimed Biotech LLP, Banglore, 560100, India
| | | | - Ganju Shiban
- Atrimed Pharmaceuticals Pvt. Ltd, Banglore, 560001, India
| | - C Chandrashekar
- Computational Biology, Atrimed Biotech LLP, Banglore, 560100, India
| | - B R Bharath
- Computational Biology, Atrimed Biotech LLP, Banglore, 560100, India
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17
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Díaz-Salazar C, Sánchez-García A, Rodríguez-Gutiérrez R, Camacho-Ortiz A, Saldívar-Rodríguez D, González-González JG. Prevalence and associated characteristics of anti-SARS-CoV-2 antibodies in Mexico 5 months after pandemic arrival. BMC Infect Dis 2021; 21:835. [PMID: 34412620 PMCID: PMC8374409 DOI: 10.1186/s12879-021-06550-5] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 08/10/2021] [Indexed: 11/30/2022] Open
Abstract
Background Seroprevalence of anti-SARS-CoV-2 antibodies is now available in several world regions to better estimate transmission dynamics. However, to date, there is no epidemiological data regarding anti-SARS-CoV-2 prevalence in Mexico. Therefore, we aimed to determine the prevalence of anti-SARS-CoV-2 antibodies and define the clinical and demographic characteristics associated with seroprevalence. Methods We conducted a cross-sectional serological survey in Ciudad Guadalupe, NL, Mexico. City government employees voluntarily participated during July 2020. Demographic and clinical characteristics were collected at the time of blood sampling to analyze the associated characteristics. IgM/IgG antibodies were determined using a qualitative chemiluminescent immunoassay. Descriptive statistics were used for categorical and continuous variables. Statistical significance was tested using the Chi-squared test, Student’s t-test and the Mann–Whitney. Logistic regression models and the odds ratios (adjusted and unadjusted) were used to estimate the association of demographic and clinical characteristics. Results Of the 3,268 participants included, 193 (5.9%, 95% CI 5.1–6.8) tested positive for IgM/IgG against SARS-CoV-2. Sex, city of residence, and comorbidities did not show any association with having IgM/IgG antibodies. A total of 114 out of 193 (59.1%) subjects with a positive test were asymptomatic, and the odds of being positive were higher in those who reported symptoms of COVID-19 in the previous four weeks to the survey (OR 4.1, 95% CI 2.9–5.5). Conclusions There is a low rate of SARS-CoV-2 infection among government employees that have continuously been working during the pandemic. Six in ten infections were asymptomatic, and seroprevalence is low and still far from herd immunity. Epidemiological surveillance and preventive measures should be mandatory.
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Affiliation(s)
- Cristina Díaz-Salazar
- Municipal Health Clinic of Guadalupe, Av. Benito Juárez 928, Colonia Nueva Exposición, 67150, Guadalupe, Nuevo Leon, Mexico
| | - Adriana Sánchez-García
- Facultad de Medicina y Hospital Universitario "Dr. José E. González", Endocrinology Division, Department of Internal Medicine, Universidad Autónoma de Nuevo León, Av. Madero y Av. Gonzalitos S/N, Colonia Mitras Centro, 64460, Monterrey, Nuevo Leon, Mexico.,Plataforma INVEST Medicina UANL-KER Unit Mayo Clinic (KER Unit Mexico), Calle Dr. Eduardo Aguirre Pequeño S/N Edificio CRIDS, Colonia Mitras Centro, 64460, Monterrey, Nuevo Leon, Mexico
| | - René Rodríguez-Gutiérrez
- Facultad de Medicina y Hospital Universitario "Dr. José E. González", Endocrinology Division, Department of Internal Medicine, Universidad Autónoma de Nuevo León, Av. Madero y Av. Gonzalitos S/N, Colonia Mitras Centro, 64460, Monterrey, Nuevo Leon, Mexico.,Plataforma INVEST Medicina UANL-KER Unit Mayo Clinic (KER Unit Mexico), Calle Dr. Eduardo Aguirre Pequeño S/N Edificio CRIDS, Colonia Mitras Centro, 64460, Monterrey, Nuevo Leon, Mexico.,Knowledge and Evaluation Research Unit in Endocrinology, Mayo Clinic, 210 2nd St SW, Rochester, MN, 55905, USA
| | - Adrián Camacho-Ortiz
- Facultad de Medicina y Hospital Universitario "Dr. José E. González", Infectious Diseases Department, Universidad Autónoma de Nuevo León, Av. Madero y Av. Gonzalitos S/N, Colonia Mitras Centro, 64460, Monterrey, Nuevo Leon, Mexico
| | - Donato Saldívar-Rodríguez
- Facultad de Medicina y Hospital Universitario "Dr. Jose E. González", Obstetrics Division, Universidad Autónoma de Nuevo León, Av. Madero y Av. Gonzalitos s/n, Colonia Mitras Centro, 64460, Monterrey, Nuevo Leon, Mexico
| | - José Gerardo González-González
- Facultad de Medicina y Hospital Universitario "Dr. José E. González", Endocrinology Division, Department of Internal Medicine, Universidad Autónoma de Nuevo León, Av. Madero y Av. Gonzalitos S/N, Colonia Mitras Centro, 64460, Monterrey, Nuevo Leon, Mexico. .,Plataforma INVEST Medicina UANL-KER Unit Mayo Clinic (KER Unit Mexico), Calle Dr. Eduardo Aguirre Pequeño S/N Edificio CRIDS, Colonia Mitras Centro, 64460, Monterrey, Nuevo Leon, Mexico.
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18
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Tao S, Zandi K, Bassit L, Ong YT, Verma K, Liu P, Downs-Bowen JA, McBrayer T, LeCher JC, Kohler JJ, Tedbury PR, Kim B, Amblard F, Sarafianos SG, Schinazi RF. Comparison of anti-SARS-CoV-2 activity and intracellular metabolism of remdesivir and its parent nucleoside. Curr Res Pharmacol Drug Discov 2021; 2:100045. [PMID: 34870151 PMCID: PMC8357487 DOI: 10.1016/j.crphar.2021.100045] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/05/2021] [Accepted: 08/08/2021] [Indexed: 02/07/2023] Open
Abstract
Remdesivir, a monophosphate prodrug of nucleoside analog GS-441524, is widely used for the treatment of moderate to severe COVID-19. It has been suggested to use GS-441524 instead of remdesivir in the clinic and in new inhalation formulations. Thus, we compared the anti-SARS-CoV-2 activity of remdesivir and GS-441524 in Vero E6, Vero CCL-81, Calu-3, Caco-2 cells, and anti-HCoV-OC43 activity in Huh-7 cells. We also compared the cellular pharmacology of these two compounds in Vero E6, Vero CCL-81, Calu-3, Caco-2, Huh-7, 293T, BHK-21, 3T3 and human airway epithelial (HAE) cells. Overall, remdesivir exhibited greater potency and superior intracellular metabolism than GS-441524 except in Vero E6 and Vero CCL-81 cells.
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Key Words
- ACE2, angiotensin-converting enzyme 2
- Anti-SARS-CoV-2
- Antiviral agents
- CES1, carboxylesterase 1
- COVID-19
- COVID-19, coronavirus disease 2019
- CatA, cathepsin A
- Coronavirus
- DP, diphosphate
- GS-441524
- HAE, human airway epithelial
- HCoV-OC43
- HINT1, histidine triad nucleotide-binding protein 1
- MP, monophosphate
- NTP, nucleoside triphosphate
- Pharmacology
- Remdesivir
- SARS-CoV-2, severe acute respiratory syndrome coronavirus 2
- TP, triphosphate
- WHO, World Health Organization
- icSARS-CoV-2-mNG, SARS-CoV-2 infectious clone virus containing mNeonGreen reporter
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Affiliation(s)
- Sijia Tao
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Keivan Zandi
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Leda Bassit
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Yee Tsuey Ong
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Kiran Verma
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Peng Liu
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Jessica A. Downs-Bowen
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Tamara McBrayer
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Julia C. LeCher
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - James J. Kohler
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Philip R. Tedbury
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Baek Kim
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Franck Amblard
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Stefan G. Sarafianos
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Raymond F. Schinazi
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
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Kittel M, Findeisen P, Muth MC, Thiaucourt M, Gerhards C, Neumaier M, Haselmann V. Specificity testing by point prevalence as a simple assessment strategy using the Roche Elecsys® anti-SARS-CoV-2 immunoassay. Int J Infect Dis 2021; 105:632-638. [PMID: 33578017 PMCID: PMC7872847 DOI: 10.1016/j.ijid.2021.02.024] [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: 12/03/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The detection of antibodies to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is mandatory for the diagnosis, retrospective assessment of disease progression, and correct evaluation of the current infection situation in the population. Many such assays have been launched by various manufacturers. Unfortunately, the new US Food and Drug Administration emergency use regulations have resulted in a situation where laboratories have to perform their own validation studies but many of these laboratories do not have the biobank needed to conduct the studies. METHODS We introduce a method that allows institutions to quickly perform a verification study in a low-prevalence infection situation. As proof of concept, we used the Roche Elecsys® anti-SARS-CoV-2 electrochemiluminescence immunoassay and an SAP-based hospital information system. The Shenzhen YHLO Biotech IgM and IgG assay targeting other surface patterns was used as a confirmatory test. RESULTS The Roche assay demonstrated a limit of detection of 0.069 cutoff index and successfully passed the performance validation according to Clinical and Laboratory Standards Institute EP15-A3. The study population of 627 inpatients has a median age of 64 years, and approximately 13% of the group were under intensive care at the respective time point. All patients included tested negative for SARS-CoV-2 infection by quantitative reverse transcription polymerase chain reaction (cobas® 6800, Roche, Mannheim, Germany). Only one false-positive result was obtained, resulting in a specificity for the Roche Elecsys anti-SARS-CoV-2 test of 99.84% and a negative predictive value of 99.98%. CONCLUSIONS The anonymized use of residual material enables quick evaluation of anti-SARS-CoV-2 immunoassays, as shown in this work with the Roche Elecsys assay. Comparison of the control population with economic data makes it possible to validate the sampling set and therefore to determine diagnostic specificity. By use of the approach chosen, it was shown that the Roche test achieved very good results in terms of diagnostic specificity, reproducibility, and limit of detection.
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Affiliation(s)
- Maximilian Kittel
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, 68167, Mannheim, Germany.
| | - Peter Findeisen
- MVZ Laboratory Dr. Limbach & Colleagues, Im Breitspiel 16, 69126, Heidelberg, Germany
| | - Maria-Christina Muth
- MVZ Laboratory Dr. Limbach & Colleagues, Im Breitspiel 16, 69126, Heidelberg, Germany
| | - Margot Thiaucourt
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, 68167, Mannheim, Germany
| | - Catharina Gerhards
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, 68167, Mannheim, Germany
| | - Michael Neumaier
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, 68167, Mannheim, Germany
| | - Verena Haselmann
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, 68167, Mannheim, Germany
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20
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Haselmann V, Kittel M, Gerhards C, Thiaucourt M, Eichner R, Costina V, Neumaier M. Comparison of test performance of commercial anti-SARS-CoV-2 immunoassays in serum and plasma samples. Clin Chim Acta 2020; 510:73-78. [PMID: 32652161 PMCID: PMC7343640 DOI: 10.1016/j.cca.2020.07.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [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: 05/31/2020] [Revised: 06/29/2020] [Accepted: 07/03/2020] [Indexed: 12/27/2022]
Abstract
BACKGROUND For epidemiologic, social and economic reasons, assessment of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection prevalence and immunity are important to adapt decisions to current demands. Hence, immunoassays for detection of anti-SARS-CoV-2 antibodies are introduced rapidly without requiring FDA emergency use authorization approval. Thus, evaluation of test performance predominantly relies on laboratories. This study aimed to evaluate the test performance of recently launched commercial immunoassays in serum and plasma samples. METHODS 51 serum samples from 26 patients with confirmed SARS-CoV-2 infection after end of quarantine and 25 control patients were analyzed using anti-SARS-CoV-2 IgG immunoassays from Roche, Euroimmun and Epitope to assess diagnostic sensitivity and specificity. 20 matching pairs of serum and plasma samples were included to analyze comparability between different specimens. RESULTS Overall, a diagnostic sensitivity of 92.3%, 96.2-100% and 100% with a respective diagnostic specificity of 100%, 100% and 84-86% for the immunoassays from Roche, Euroimmun and Epitope were determined. In total, 84-96% of samples were correctly classified as negative and 92.3-95.2% as positive. The level of concordance between plasma- and serum-based testing diverged between the assays (Epitope r2 = 0.97; Euroimmun r2 = 0.91; Roche r2 = 0.76). CONCLUSIONS The immunoassays from Euroimmun and Roche revealed a higher specificity than the Epitope assay without a substantial drop of diagnostic sensitivity. Significant differences between plasma- and serum-based testing highlights the need for determination of appropriate cut-offs per specimen type. Hence, there is an urgent need for test harmonization and establishment of quality standards for an appropriate use of COVID-19 serological tests.
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Affiliation(s)
- Verena Haselmann
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany.
| | - Maximilian Kittel
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany
| | - Catharina Gerhards
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany
| | - Margot Thiaucourt
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany
| | - Romy Eichner
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany
| | - Victor Costina
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany
| | - Michael Neumaier
- Department of Clinical Chemistry, University Medicine Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany
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