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Azimi A, Ahmadi S, Kumar A, Qomi M, Almasirad A. SMILES-Based QSAR and Molecular Docking Study of Oseltamivir Derivatives as Influenza Inhibitors. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2067194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Atena Azimi
- Faculty of Pharmacy, Tehran Medical Sciences, Department of Medicinal Chemistry, Islamic Azad University, Tehran, Iran
| | - Shahin Ahmadi
- Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Department of Chemistry, Islamic Azad University, Tehran, Iran
| | - Ashwani Kumar
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, India
| | - Mahnaz Qomi
- Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Department of Chemistry, Islamic Azad University, Tehran, Iran
- Active Pharmaceutical Ingredients Research (APIRC), Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Ali Almasirad
- Faculty of Pharmacy, Tehran Medical Sciences, Department of Medicinal Chemistry, Islamic Azad University, Tehran, Iran
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Soudani S, Mafi A, Al Mayahi Z, Al Balushi S, Dbaibo G, Al Awaidy S, Amiche A. A Systematic Review of Influenza Epidemiology and Surveillance in the Eastern Mediterranean and North African Region. Infect Dis Ther 2022; 11:15-52. [PMID: 34997913 PMCID: PMC8742167 DOI: 10.1007/s40121-021-00534-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/27/2021] [Indexed: 11/24/2022] Open
Abstract
Seasonal influenza represents a huge health burden, resulting in significant mortality and morbidity. Following the 2009 H1N1 pandemic, focus has been directed on the burden of influenza globally. Country and regional disease burden estimates play important roles in helping inform decisions on national influenza intervention programmes. Despite improvements in influenza surveillance following the 2009 pandemic, many opportunities remain unexplored in the Eastern Mediterranean and North African (EMNA) region, which has a high prevalence of patients with chronic disease and thus a population at high risk of influenza complications. We conducted a systematic literature review of Embase, Medline, Scopus and the Cochrane Database of Systematic Reviews from 1 January 1998 to 31 January 2020 covering the EMNA region with the aim to describe the epidemiology of influenza in the region and assess the influenza epidemiological surveillance research landscape. Relevant data on study characteristics, population, clinical/virology characteristics and epidemiology were extracted and summarised descriptively. Of the 112 studies identified for inclusion, 90 were conducted in the Eastern Mediterranean region, 19 in North Africa and three across the EMNA region. Data were reported on 314,058 laboratory-confirmed influenza cases, 96 of which were derived from surveillance systems. Amongst the surveillance studies, the percentage of positive cases reported ranged from 1% to 100%. The predominantly identified influenza strain was strain A; H1N1 was the most prominent circulating subtype. Typing was performed in approximately 75% and subtyping in 50% of studies, respectively. Data on those considered most at risk for influenza complications were collected in 21% of studies, highlighting a regional gap for these data. Our review reveals existing gaps in regional estimates of influenza health and economic burden, hospitalisation rates and duration, and highlights the need for robust and high-quality epidemiology data to help inform public health interventions.
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Affiliation(s)
| | | | | | | | - Ghassan Dbaibo
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
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Zhao XN, Zhang HJ, Li D, Zhou JN, Chen YY, Sun YH, Adeola AC, Fu XQ, Shao Y, Zhang ML. Whole-genome sequencing reveals origin and evolution of influenza A(H1N1)pdm09 viruses in Lincang, China, from 2014 to 2018. PLoS One 2020; 15:e0234869. [PMID: 32579578 PMCID: PMC7314029 DOI: 10.1371/journal.pone.0234869] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 06/03/2020] [Indexed: 11/18/2022] Open
Abstract
The continuous variation of the seasonal influenza viruses, particularly A(H1N1)pdm09, persistently threatens human life and health around the world. In local areas of southwest china, the large time-scale genomic research on A(H1N1)pdm09 is still insufficient. Here, we sequenced 45 whole-genome sequences of influenza A(H1N1)pdm09 viruses in Lincang, China, from 2014 to 2018, by next-generation sequencing technology to characterize molecular mechanisms of their origin and evolution. Our phylogenetic analyses suggest that the A(H1N1)pdm09 strains circulating in Lincang belong to clade 6B and the subclade 6B.1A predominates in 2018. Further, the strains in 2018 possess elevated evolutionary rate as compared to strains in other years. Several newly emerged mutations for HA (hemagglutinin) in 2018 are revealed (i.e., S183P and R221K). Intriguingly, the substitution R221K falls into the RBS (receptor binding site) of HA protein, which could affect antigenic properties of influenza A(H1N1)pdm09 viruses, and another substitution S183P near to RBS with a high covering frequency (11/14 strains) in 2018 is exactly located at the epitope B. Notably, the NA (neuraminidase) protein harbors a new mutation I23T, potentially involved in N-glycosylation. Based on the background with a higher evolutionary rate in 2018 strains, we deeply evaluate the potential vaccine efficacy against Lincang strains and discover a substantive decline of the vaccine efficacy in 2018. Our analyses reaffirm that the real-time molecular surveillance and timely updated vaccine strains for prevention and control of influenza A(H1N1)pdm09 are crucial in the future.
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Affiliation(s)
- Xiao-Nan Zhao
- Department of Acute Infectious Diseases Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming, Yunnan, China
| | - Han-Ju Zhang
- Lincang Center for Disease Control and Prevention, Lincang, Yunnan, China
| | - Duo Li
- Department of Acute Infectious Diseases Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming, Yunnan, China
| | - Jie-Nan Zhou
- Department of Acute Infectious Diseases Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming, Yunnan, China
| | - Yao-Yao Chen
- Department of Acute Infectious Diseases Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming, Yunnan, China
| | - Yan-Hong Sun
- Department of Acute Infectious Diseases Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming, Yunnan, China
| | - Adeniyi C. Adeola
- State Key Laboratory of Genetic Resources and Evolution, Chinese Academy of Sciences, Kunming Institute of Zoology, Kunming, Yunnan, China
| | - Xiao-Qing Fu
- Department of Acute Infectious Diseases Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming, Yunnan, China
| | - Yong Shao
- State Key Laboratory of Genetic Resources and Evolution, Chinese Academy of Sciences, Kunming Institute of Zoology, Kunming, Yunnan, China
- * E-mail: (MLZ); (YS)
| | - Mei-Ling Zhang
- Department of Acute Infectious Diseases Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming, Yunnan, China
- * E-mail: (MLZ); (YS)
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