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2.
Journal of Clinical and Diagnostic Research ; 16(9):OC21-OC24, 2022.
Article in English | EMBASE | ID: covidwho-2067195

ABSTRACT

Introduction: The clinical diagnosis of COVID-19 is supplemented by clinical severity indices. These indices are the National Early Warning Score (NEWS, which aids in risk stratification), CT severity score (radiological severity score), and Reverse Transcription-Polymerase Chain Reaction (RT-PCR) cycle threshold (Ct value, which provides a semi-quantitative measure of viral load). Aim(s): To assess the correlation between NEWS at admission, RT-PCR Ct value and CT severity score in mild and moderate COVID-19 patients. Methods and Materials: This prospective cohort study was conducted in Maulana Azad Medical College and Lok Nayak hospital, New Delhi, from January to June 2021. The study included 50 subjects (25 with mild COVID-19 and 25 with moderate COVID-19). NEWS was calculated at admission and Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Ct value was estimated using real-time RT-PCR. CT severity score was calculated based on High Resolution Computed Tomography (HRCT) chest findings. The correlation among the parameters was determined using Pearson correlation formula. Result(s): The mean age of subjects in the mild and moderate COVID-19 groups were 49.52 years and 51.84 years, respectively. The mean RT-PCR Ct value of E gene was 24.48 and Rdrp gene was 24.56 in the mild COVID-19 group;while in the moderate group it was 23.72 for both E gene and Rdrp genes. The correlation between NEWS and Ct value of E gene (r-value=-0.06, p-value=0.68), Ct value of Rdrp gene (r-value=-0.03, p-value=0.79) and the correlation between CT severity score and Ct value of E gene (r-value=-0.05, p-value=0.73), Ct value of Rdrp gene (r-value=-0.06, p-value=0.68) was negative and insignificant. The mean CT severity score in mild COVID-19 group was 3.92, and in moderate COVID-19 group was 9.88. A significant positive correlation was found between the CT severity score and NEWS at admission. Conclusion(s): The clinical severity of COVID-19 as estimated by NEWS corroborates with CT severity score while the relationship between RT-PCR Ct value and clinicoradiological severity needs to be ascertained by further research. Copyright © 2022 Journal of Clinical and Diagnostic Research. All rights reserved.

3.
Chemistry Africa ; 2022.
Article in English | Web of Science | ID: covidwho-1935910

ABSTRACT

Dengue fever is a tropical disease spread worldwide, transmitted by the mosquito Aedes aegypti. It affects 100 million people worldwide every year and half a million cases of dengue hemorrhagic fever are registered. At present, it poses sever health burden as combined infections of COVID-19. Currently, as a combined infection with COVID-19, it is becoming a serious health burden. To identify the active molecule, Maestro V12.7 was used with different tools including LigPrep, Grid Generation, SiteMap, Glide XP Docking, Pharmachophores and MM-GBSA. The UNRESS tool was also used to assess the protein stability with this dengue protein. The docking result showed that all examined phytocomponents except berberine and -(+)-l-alliin had good docking scores of -8.577 (azadirachtin), -8.112 (curcumin), -7.348 (apigenin) and -6.028 (andrographolide). However, berberine and -(+)-l-alliin possessed good hydrogen-bonding interactions with RdRp. In addition, molecular dynamic simulations demonstrate that the complex of azadirachtin and dengue protein has a solid understanding of the precise interactions. As per the research results, the present research suggests that this is the first statement of azadirachtin against NS5 RNA-dependent RNA polymerase domain (RdRp), despite extensive research on this molecule in previous investigations. Furthermore, we anticipate that molecules such as curcumin, apigenin, and andrographolide would show beneficial effects while in vitro and in vivo studies are conducted on virally related objects. Since we performed ADMET and pharmacokinetic properties in this research, we feel that the phytochemicals of the screened anti-dengue molecules may not need to be evaluated for toxicological effects.

4.
Rev Bras Farmacogn ; 32(3): 410-420, 2022.
Article in English | MEDLINE | ID: covidwho-1899419

ABSTRACT

Dengue fever has become one of the deadliest infectious diseases and requires the development of effective antiviral therapies. It is caused by members of the Flaviviridae family, which also cause various infections in humans, including dengue fever, tick-borne encephalitis, West Nile fever, and yellow fever. In addition, since 2019, dengue-endemic regions have been grappling with the public health and socio-economic impact of the ongoing coronavirus disease 19. Co-infections of coronavirus and dengue fever cause serious health complications for people who also have difficulty managing them. To identify the potentials of mangiferin, a molecular docking with various dengue virus proteins was performed. In addition, to understand the gene interactions between human and dengue genes, Cytoscape was used in this research. The Kyoto Encyclopedia of Genes and Genomes software was used to find the paths of Flaviviridae. The Kyoto Encyclopedia of Genes and Genomes and the Reactome Pathway Library were used to understand the biochemical processes involved. The present results show that mangiferin shows efficient docking scores and that it has good binding affinities with all docked proteins. The exact biological functions of type I interferon, such as interferon-α and interferon-ß, were also shown in detail through the enrichment analysis of the signaling pathway. According to the docking results, it was concluded that mangiferin could be an effective drug against the complications of dengue virus 1, dengue virus 3, and non-structural protein 5. In addition, computational biological studies lead to the discovery of a new antiviral bioactive molecule and also to a deeper understanding of viral replication in the human body. Ultimately, the current research will be an important resource for those looking to use mangiferin as an anti-dengue drug. Supplementary Information: The online version contains supplementary material available at 10.1007/s43450-022-00258-6.

5.
7.
Revista brasileira de farmacognosia : orgao oficial da Sociedade Brasileira de Farmacognosia ; : 1-11, 2022.
Article in English | EuropePMC | ID: covidwho-1824056

ABSTRACT

Dengue fever has become one of the deadliest infectious diseases and requires the development of effective antiviral therapies. It is caused by members of the Flaviviridae family, which also cause various infections in humans, including dengue fever, tick-borne encephalitis, West Nile fever, and yellow fever. In addition, since 2019, dengue-endemic regions have been grappling with the public health and socio-economic impact of the ongoing coronavirus disease 19. Co-infections of coronavirus and dengue fever cause serious health complications for people who also have difficulty managing them. To identify the potentials of mangiferin, a molecular docking with various dengue virus proteins was performed. In addition, to understand the gene interactions between human and dengue genes, Cytoscape was used in this research. The Kyoto Encyclopedia of Genes and Genomes software was used to find the paths of Flaviviridae. The Kyoto Encyclopedia of Genes and Genomes and the Reactome Pathway Library were used to understand the biochemical processes involved. The present results show that mangiferin shows efficient docking scores and that it has good binding affinities with all docked proteins. The exact biological functions of type I interferon, such as interferon-α and interferon-β, were also shown in detail through the enrichment analysis of the signaling pathway. According to the docking results, it was concluded that mangiferin could be an effective drug against the complications of dengue virus 1, dengue virus 3, and non-structural protein 5. In addition, computational biological studies lead to the discovery of a new antiviral bioactive molecule and also to a deeper understanding of viral replication in the human body. Ultimately, the current research will be an important resource for those looking to use mangiferin as an anti-dengue drug. Graphical Supplementary Information The online version contains supplementary material available at 10.1007/s43450-022-00258-6.

8.
Gene Reports ; 27, 2022.
Article in English | Scopus | ID: covidwho-1701998

ABSTRACT

Dengue fever is a tropical endemic disease that is transmitted by the female Aedes aegypti mosquitoes around the world. In dengue patients, the severe vascular leak, bleeding and organ failure underlines the severity of this disease. It affects 100 million people each year and half a million cases of dengue hemorrhagic fever are recorded worldwide. In addition, the combined infections of COVID-19 and dengue fever cause serious health problems for those infected. Because polyphenolic compounds have the ability to regulate and restore the immune system, the intervention of biological tools is required to find an accurate polyphenolic compound from plants to combat these viral diseases. In this computational study, we used a range of software to explore the anti-dengue potential of the selected polyphenols, while the database was also used to explore diseased enzymes and drug targets in the dengue pathways of Homo sapiens. All examined polyphenols showed excellent docking values after molecular docking and also showed remarkable hydrogen bond interactions between the ligand and the dengue protein. Among the polyphenols tested, (R)-(+)-rosmarinic acid has a docking score of −8451 with an energy value of −59,860. After that, curcumin has the second best docking score of −8.221, followed by D - (+) - catechin (−7.042) and epicatechin (−7.069). In addition, molecular dynamic simulations demonstrate that the complex of (R) - (+) - rosmarinic acid and dengue protein has a solid understanding of the precise interactions. The current study suggests that this is the first report of such compounds against the dengue virus, despite extensive research on these substances in previous research. Moreover, we expect these polyphenols to show promising effects when used in antiviral research such as in-vitro and in-vivo studies. In addition, toxicological studies such as adsorption, distribution, metabolism, and excretion are required before further exploration of the polyphenols, as this will help to understand the biological processes of these potential polyphenols. © 2022 Elsevier Inc.

9.
Clinical Cancer Research ; 26(18 SUPPL), 2020.
Article in English | EMBASE | ID: covidwho-992026

ABSTRACT

Objective: To evaluate patterns of patient management in an academic Radiation Oncology department between3/17/20 and 5/8/20 during the COVID-19 pandemic. Background: As a response to the worldwide COVID-19 pandemic, our Radiation Oncology department instituted anumber of measures to limit spread of the disease to our patients and staff. This included prospectively evaluatingall new referrals for radiation treatment and determining an appropriate course of action, which if appropriateincluded delaying the start of radiation, hypofractionation, or using other modalities of treatment prior to start ofradiation. Methods: We analyzed data for 82 patients between 3/17/20-5/8/20 to evaluate patterns of management. The chi-squared test was used to evaluate the descriptive characteristics of the study population, with P values ≤ 0.05considered statistically significant. One sample t-test was used to compare the statistical mean difference betweensample variables. Data were analyzed using SPSS 24.0 software (IBM, Armonk, NY, USA). Results: The data set comprised 38% Caucasians and 59% African Americans. An age breakdown revealed 12.3%below age 30, 42% between ages 30-60, and 45.7% over age of 60. When the data were analyzed by gender, wenoted a significant difference by site of treatment (p=0.005) and whether immediate treatment was required or not(p=0.029). This likely reflects gender-driven differences in cancer site with patients diagnosed with prostate cancergetting LHRH agonist therapy prior to start of radiation. Hypofractionated radiation schedules were used in 2patients with cord compression early during the study period compared to 3 patients who received standardfractionation later, and one person elected to go straight to hospice care (p=0.002). Of patients for heterotopicossification prophylaxis, 3/14 declined radiation and one was over the weight limit of the radiation table (p=0.000).41% of patients were inpatients. No patients developed COVID-19 during our study period. Conclusion: A prospective evaluation of new patient referrals may have helped mitigate the spread of COVID-19 atour Radiation Oncology facility. This is one of several prospective measures that our department took to protectpatients and staff.

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