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Wang R, Xu H, Banerjee A, Cui Z, Ma Y, Whittingham WG, Yang P, Li A. Mild Approach to Nucleoside Analogues via Photoredox/Cu-Catalyzed Decarboxylative C-N Bond Formation. Total Synthesis of Oxetanocin A. Org Lett 2024; 26:2691-2696. [PMID: 38011311 DOI: 10.1021/acs.orglett.3c00914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
The conventional N-glycosylation methods for nucleoside synthesis usually require strongly acidic or basic conditions. Here we report the decarboxylative C(sp3)-N coupling of glycosyl N-hydroxyphthalimide esters with nucleobases via dual photoredox/Cu catalysis, which offered a mild approach to nucleoside analogues. A total synthesis of oxetanocin A, an antiviral natural product containing an oxetanose moiety, has been achieved by using this method.
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Affiliation(s)
- Ruonan Wang
- College of Chemistry and Henan Institute of Advanced Technology, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Hao Xu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Arpan Banerjee
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Zhongwen Cui
- College of Chemistry and Henan Institute of Advanced Technology, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yuyong Ma
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - William G Whittingham
- Jealott's Hill International Research Centre, Syngenta Limited, Bracknell, Berkshire RG42 6EY, United Kingdom
| | - Peng Yang
- College of Chemistry and Henan Institute of Advanced Technology, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
| | - Ang Li
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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Foresta A, Ojeda-Fernández L, Augurio C, Guanziroli C, Tettamanti M, Macaluso G, Lauriola P, Nobili A, Roncaglioni MC, Baviera M. Prevalence and Predictors of Post-Acute COVID-19 Symptoms in Italian Primary Care Patients. J Prim Care Community Health 2024; 15:21501319231222364. [PMID: 38166461 PMCID: PMC10768628 DOI: 10.1177/21501319231222364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 01/04/2024] Open
Abstract
BACKGROUND Despite all the progress in the management of acute COVID-19, it is still not clear why some people continue to experience symptoms after recovery. Using data from a self-administered online survey, we assessed the prevalence and predictors of post-acute COVID-19 in an unselected population followed by GPs. METHODS Patients ≥18 years with a confirmed COVID-19 diagnosis were included. The survey collected information on demographics, risk factors, COVID-19 course and symptomatology. Fatigue and Quality of Life questionnaires were also administered. Descriptive statistics were used to describe patients' characteristics, stratified as acute and post-acute COVID-19. Logistic regression models were used to assess the association between clinical characteristics and post-acute COVID-19. RESULTS A total of 1108 surveys were analyzed. Nearly 29% of patients reported post-acute COVID-19. The more persistent symptoms were fatigue, memory and concentration impairment. Adjusted Odds Ratio (OR) showed a significantly higher probability of post-acute COVID-19 for women compared to men (OR 1.9, 95% CI 1.4-2.5), for age >50 years than ≤50 years (OR 1.6, 95% CI 1.2-2.2), for BMI > 25 compared to BMI ≤ 25 (OR 1.6, 95% CI 1.1-2.1) and those with autoimmune diseases, compared to those without (OR 1.8 95% CI 1.1-2.9). In addition, a significant association was found with COVID-19 hospitalization, anxiety and allergies. We found that post-acute COVID-19 patients showed a higher fatigue and a worst quality of life. CONCLUSIONS These findings suggest the need for tailored personalized strategies to improve the management of patients with post-acute COVID-19.
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Affiliation(s)
- Andreana Foresta
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | | | | | | | - Mauro Tettamanti
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Giulia Macaluso
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Paolo Lauriola
- International Society of Doctors for Environment (ISDE), Rete Italiana Medici Sentinella per l’Ambiente, Geneva, Switzerland
| | | | | | - Marta Baviera
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
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Taheri R, Shahrokhi SZ, Amjadi Z, Kazerouni F. Investigating the impact of metformin on severity of COVID-19 in patients with Type 2 diabetes mellitus: Focusing on laboratory findings. Endocrinol Diabetes Metab 2023; 6:e441. [PMID: 37431844 PMCID: PMC10495547 DOI: 10.1002/edm2.441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/20/2023] [Accepted: 07/02/2023] [Indexed: 07/12/2023] Open
Abstract
BACKGROUND In the terrifying pandemic caused by SARS-CoV-2, diabetic patients exhibiting more severe outcomes and mortality rate is high among them. Based on recent studies, metformin as the most prescribed drug for T2DM treatment may improve severe outcomes in diabetic patients infected with SARS-CoV-2. On the other hand, abnormal laboratory findings can help to differentiate between the severe and non-severe form of COVID-19. According to the mentioned issues, the effect of metformin on severity of COVID-19 was examined in T2DM patients with SARS-CoV-2 infection. METHODS The study included 187 individuals diagnosed with COVID-19, 104 patients were diabetic and divided into two groups according to their anti-diabetic drugs: patients who were treated only with metformin and patients who were treated with other anti-diabetic drugs. The other participants were non-diabetic and diagnosed with COVID-19. Biochemical parameters were measured by routine laboratory methods before, during and after SARS-CoV-2 infection. RESULTS During infection, FBS, creatinine, ALT, AST, Ferritin and LDH were significantly lower in metformin users than non-users (p-value: .02, .01, .03, .04, .0009 and .01, respectively). Also, after recovery, there were statistically significant differences between metformin users and non-users with respect to most of the study parameters, except FBS, BUN and ALP (p-value: .51, .28 and .35, respectively). CONCLUSION Our result suggested that metformin might be associated with better outcomes in diabetic patients infected with SARS-CoV-2.
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Affiliation(s)
- Rana Taheri
- Department of Clinical Biochemistry, School of MedicineShahid Beheshti University of Medical SciencesTehranIran
- Division of BiochemistryFardis Central LabAlborzIran
| | | | - Zahra Amjadi
- Division of BiochemistryFardis Central LabAlborzIran
- Department of Biology and Biochemistry, Science Faculty, Shahr‐e‐Qods BranchIslamic Azad UniversityTehranIran
| | - Faranak Kazerouni
- Department of Medical lab. Sciences, School of Allied Medical SciencesShahid Beheshti University of Medical SciencesTehranIran
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Principi N, Autore G, Ramundo G, Esposito S. Epidemiology of Respiratory Infections during the COVID-19 Pandemic. Viruses 2023; 15:v15051160. [PMID: 37243246 DOI: 10.3390/v15051160] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
To face the COVID-19 outbreak, a wide range of non-pharmaceutical interventions (NPIs) aimed at limiting the spread of the virus in communities, such as mask-wearing, hand hygiene, social distancing, travel restrictions, and school closures, were introduced in most countries. Thereafter, a significant reduction of new asymptomatic and symptomatic COVID-19 cases occurred, although there were differences between countries according to the type and duration of the NPIs. In addition, the COVID-19 pandemic has been accompanied by significant variations in the global incidence of diseases due to the most common non-SARS-CoV-2 respiratory viruses and some bacteria. In this narrative review, the epidemiology of the most common non-SARS-CoV-2 respiratory infections during the COVID-19 pandemic is detailed. Moreover, factors that could have had a role in modifying the traditional circulation of respiratory pathogens are discussed. A literature analysis shows that NPIs were the most important cause of the general reduction in the incidence of influenza and respiratory syncytial virus infection in the first year of the pandemic, although the different sensitivity of each virus to NPIs, the type and duration of measures used, as well as the interference among viruses may have played a role in modulating viral circulation. Reasons for the increase in the incidences of Streptococcus pneumoniae and group A Streptococcus infections seem strictly linked to immunity debt and the role played by NPIs in reducing viral infections and limiting bacterial superimposed infections. These results highlight the importance of NPIs during pandemics, the need to monitor the circulation of infectious agents that cause diseases similar to those caused by pandemic agents, and the need to make efforts to improve coverage with available vaccines.
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Affiliation(s)
| | - Giovanni Autore
- Pediatric Clinic, Pietro Barilla Children's Hospital, Department of Medicine and Surgery, University Hospital of Parma, 43126 Parma, Italy
| | - Greta Ramundo
- Pediatric Clinic, Pietro Barilla Children's Hospital, Department of Medicine and Surgery, University Hospital of Parma, 43126 Parma, Italy
| | - Susanna Esposito
- Pediatric Clinic, Pietro Barilla Children's Hospital, Department of Medicine and Surgery, University Hospital of Parma, 43126 Parma, Italy
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Niemann G, Germer M, Hauf M, Poelsler G, Röder J, Schüttrumpf J. Hyperimmunplasma: Gewinnung, Verarbeitung und therapeutische
Anwendungen. TRANSFUSIONSMEDIZIN 2023. [DOI: 10.1055/a-1894-1146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
ZusammenfassungDas Prinzip der passiven Immunisierung ist seit dem 19. Jahrhundert bekannt und
wird auch bei aktuellen Pandemien als Ansatz zur Prophylaxe und Therapie
eingesetzt. Der Schutz wird hierbei übertragen durch Blut, Serum oder
Plasma, welche Immunglobuline gegen spezifische Krankheitserreger,
Bakterientoxine oder sonstige Antigene enthalten, sowie durch aus Humanplasma
industriell aufgereinigte Immunglobuline. Die aktuell verwendeten
Reinigungsverfahren für Immunglobuline aus Humanplasma beruhen auf der
von Edwin J. Cohn entwickelten Fraktionierung von Plasma. Zur Gewinnung von
Immunglobulinen mit hohen Antikörpertitern gegen spezifische Antigene,
sogenannte Hyperimmunglobuline, muss zunächst Hyperimmunplasma gezielt
von ausgewählten Spendern gewonnen werden. Diese Spender haben
erhöhte Antikörpertiter gegen spezifische Krankheitserreger,
Bakterientoxine oder sonstige Antigene, wenn sie im Rahmen einer vorangegangenen
Infektion natürlich immunisiert wurden, einen zugelassenen Impfstoff zur
Immunisierung erhalten haben oder gezielt zum Zweck der Plasmaspende immunisiert
wurden. Aktuell sind in Deutschland, Österreich und der Schweiz
Hyperimmunglobulinprodukte für verschiedene Anwendungen im Patienten
zugelassen, von denen die meisten aus humanem Blutplasma gewonnen werden. Um die
Herstellung der Produkte und damit letztlich die Behandlung der Patienten
gewährleisten zu können, werden resiliente Lieferketten
benötigt. Hierzu bedarf es unter anderem Änderungen in den
Rahmenbedingungen für die Spenderimmunisierung in Deutschland.
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Mori M, Quaglio D, Calcaterra A, Ghirga F, Sorrentino L, Cammarone S, Fracella M, D’Auria A, Frasca F, Criscuolo E, Clementi N, Mancini N, Botta B, Antonelli G, Pierangeli A, Scagnolari C. Natural Flavonoid Derivatives Have Pan-Coronavirus Antiviral Activity. Microorganisms 2023; 11:microorganisms11020314. [PMID: 36838279 PMCID: PMC9960971 DOI: 10.3390/microorganisms11020314] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/27/2023] Open
Abstract
The SARS-CoV-2 protease (3CLpro) is one of the key targets for the development of efficacious drugs for COVID-19 treatment due to its essential role in the life cycle of the virus and exhibits high conservation among coronaviruses. Recent studies have shown that flavonoids, which are small natural molecules, have antiviral activity against coronaviruses (CoVs), including SARS-CoV-2. In this study, we identified the docking sites and binding affinity of several natural compounds, similar to flavonoids, and investigated their inhibitory activity towards 3CLpro enzymatic activity. The selected compounds were then tested in vitro for their cytotoxicity, for antiviral activity against SARS-CoV-2, and the replication of other coronaviruses in different cell lines. Our results showed that Baicalein (100 μg/mL) exerted strong 3CLpro activity inhibition (>90%), whereas Hispidulin and Morin displayed partial inhibition. Moreover, Baicalein, up to 25 μg/mL, hindered >50% of SARS-CoV-2 replication in Vero E6 cultures. Lastly, Baicalein displayed antiviral activity against alphacoronavirus (Feline-CoV) and betacoronavirus (Bovine-CoV and HCoV-OC43) in the cell lines. Our study confirmed the antiviral activity of Baicalein against SARS-CoV-2 and demonstrated clear evidence of its pan-coronaviral activity.
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Affiliation(s)
- Mattia Mori
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy
| | - Deborah Quaglio
- Department of Chemistry and Technologies of Drugs, Sapienza University of Rome, 00185 Rome, Italy
| | - Andrea Calcaterra
- Department of Chemistry and Technologies of Drugs, Sapienza University of Rome, 00185 Rome, Italy
| | - Francesca Ghirga
- Department of Chemistry and Technologies of Drugs, Sapienza University of Rome, 00185 Rome, Italy
| | - Leonardo Sorrentino
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Silvia Cammarone
- Department of Chemistry and Technologies of Drugs, Sapienza University of Rome, 00185 Rome, Italy
| | - Matteo Fracella
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Alessandra D’Auria
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Federica Frasca
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Elena Criscuolo
- Laboratory of Medical Microbiology and Virology, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Nicola Clementi
- Laboratory of Medical Microbiology and Virology, Vita-Salute San Raffaele University, 20132 Milan, Italy
- Laboratory of Medical Microbiology and Virology, IRCCS San Raffaele Hospital, 20132 Milan, Italy
| | - Nicasio Mancini
- Laboratory of Medical Microbiology and Virology, Vita-Salute San Raffaele University, 20132 Milan, Italy
- Laboratory of Medical Microbiology and Virology, IRCCS San Raffaele Hospital, 20132 Milan, Italy
| | - Bruno Botta
- Department of Chemistry and Technologies of Drugs, Sapienza University of Rome, 00185 Rome, Italy
| | - Guido Antonelli
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Alessandra Pierangeli
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Carolina Scagnolari
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy
- Correspondence:
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