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Sodagar A, Javed R, Tahir H, Razak SIA, Shakir M, Naeem M, Yusof AHA, Sagadevan S, Hazafa A, Uddin J, Khan A, Al-Harrasi A. Pathological Features and Neuroinflammatory Mechanisms of SARS-CoV-2 in the Brain and Potential Therapeutic Approaches. Biomolecules 2022; 12:biom12070971. [PMID: 35883527 PMCID: PMC9313047 DOI: 10.3390/biom12070971] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 11/16/2022] Open
Abstract
The number of deaths has been increased due to COVID-19 infections and uncertain neurological complications associated with the central nervous system. Post-infections and neurological manifestations in neuronal tissues caused by COVID-19 are still unknown and there is a need to explore how brainstorming promoted congenital impairment, dementia, and Alzheimer’s disease. SARS-CoV-2 neuro-invasion studies in vivo are still rare, despite the fact that other beta-coronaviruses have shown similar properties. Neural (olfactory or vagal) and hematogenous (crossing the blood–brain barrier) pathways have been hypothesized in light of new evidence showing the existence of SARS-CoV-2 host cell entry receptors into the specific components of human nerve and vascular tissue. Spike proteins are the primary key and structural component of the COVID-19 that promotes the infection into brain cells. Neurological manifestations and serious neurodegeneration occur through the binding of spike proteins to ACE2 receptor. The emerging evidence reported that, due to the high rate in the immediate wake of viral infection, the olfactory bulb, thalamus, and brain stem are intensely infected through a trans-synaptic transfer of the virus. It also instructs the release of chemokines, cytokines, and inflammatory signals immensely to the blood–brain barrier and infects the astrocytes, which causes neuroinflammation and neuron death; and this induction of excessive inflammation and immune response developed in more neurodegeneration complications. The present review revealed the pathophysiological effects, molecular, and cellular mechanisms of possible entry routes into the brain, pathogenicity of autoantibodies and emerging immunotherapies against COVID-19.
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Affiliation(s)
- Aisha Sodagar
- Department of Botany, Faculty of Sciences, University of Agriculture, Faisalabad 38040, Pakistan;
| | - Rasab Javed
- Institute of Microbiology, University of Agriculture, Faisalabad 38040, Pakistan;
| | - Hira Tahir
- Department of Botany, Government College Women University Faisalabad, Faisalabad 38000, Pakistan;
| | - Saiful Izwan Abd Razak
- Bioinspired Device and Tissue Engineering Research Group, School of Biomedical Engineering and Health Sciences, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
- Sports Innovation & Technology Centre, Institute of Human Centred Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia
| | - Muhammad Shakir
- School of Life Sciences, Northeast Normal University, Changchun 130024, China;
| | - Muhammad Naeem
- College of Life Science, Hebei Normal University, Shijiazhuang 050024, China;
| | - Abdul Halim Abdul Yusof
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - Suresh Sagadevan
- Nanotechnology & Catalysis Research Centre, University of Malaya, Kuala Lumpur 50603, Kuala Lumpur, Malaysia;
| | - Abu Hazafa
- Department of Biochemistry, Faculty of Sciences, University of Agriculture, Faisalabad 38040, Pakistan
- Correspondence: or (A.H.); (A.K.); (A.A.-H.)
| | - Jalal Uddin
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia;
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al Mauz, Nizwa 616, Oman
- Correspondence: or (A.H.); (A.K.); (A.A.-H.)
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al Mauz, Nizwa 616, Oman
- Correspondence: or (A.H.); (A.K.); (A.A.-H.)
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Dhawan M, Priyanka, Parmar M, Angural S, Choudhary OP. Convalescent plasma therapy against the emerging SARS-CoV-2 variants: Delineation of the potentialities and risks. Int J Surg 2022; 97:106204. [PMID: 34974199 PMCID: PMC8717699 DOI: 10.1016/j.ijsu.2021.106204] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 12/21/2021] [Accepted: 12/23/2021] [Indexed: 12/12/2022]
Abstract
Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has resulted in a catastrophic pandemic and severely impacted people's livelihoods worldwide. In addition, the emergence of SARS-CoV-2 variants has posed a severe threat to humankind. Due to the dearth of therapeutic options during the commencement of the pandemic, convalescent plasma therapy (CPT) played a significant part in the management of patients with severe form of COVID-19. Several recent studies have proposed various protective effects of CPT, such as antiviral, anti-inflammatory, anti-thrombotic, and immunomodulatory actions, curtailing the devastating consequences of the SARS-CoV-2 infection. On the contrary, several clinical studies have raised some serious concerns about the effectiveness and reliability of CPT in the management of patients with COVID-19. The protective effects of CPT in severely ill patients are yet to be proved. Moreover, the emergence of SARS-CoV-2 variants has raised concerns about the effectiveness of CPT against COVID-19. Therefore, to establish concrete evidence of the efficacy of CPT and adjudicate its inclusion in the management of COVID-19, an updated review of present literature is required, which could help in the development of an efficient therapeutic regimen to treat COVID-19 amid the emergence of new viral variants.
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Affiliation(s)
- Manish Dhawan
- Department of Microbiology, Punjab Agricultural University, Ludhiana, 141004, Punjab, India,The Trafford Group of Colleges, Manchester, WA14 5PQ, UK
| | - Priyanka
- Independent Researcher, 07, Type IV Quarter, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), Selesih, Aizawl, 796015, Mizoram, India
| | - Manisha Parmar
- Department of Veterinary Microbiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, 141004, Punjab, India
| | - Steffy Angural
- Department of Medical Lab Technology, Faculty of Applied Health Sciences, GNA University, Phagwara-Hoshiarpur Road, Sri Hargobindgarh, 144401, Punjab, India,Corresponding author
| | - Om Prakash Choudhary
- Department of Veterinary Anatomy and Histology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), Selesih, Aizawl, 796015, Mizoram, India,Corresponding author
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Gupta D, Sharma P, Singh M, Kumar M, Ethayathulla AS, Kaur P. Structural and functional insights into the spike protein mutations of emerging SARS-CoV-2 variants. Cell Mol Life Sci 2021; 78:7967-7989. [PMID: 34731254 PMCID: PMC11073194 DOI: 10.1007/s00018-021-04008-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 02/07/2023]
Abstract
Since the emergence of the first case of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus (SARS-CoV-2), the viral genome has constantly undergone rapid mutations for better adaptation in the host system. These newer mutations have given rise to several lineages/ variants of the virus that have resulted in high transmission and virulence rates compared to the previously circulating variants. Owing to this, the overall caseload and related mortality have tremendously increased globally to > 233 million infections and > 4.7 million deaths as of Sept. 28th, 2021. SARS-CoV-2, Spike (S) protein binds to host cells by recognizing human angiotensin-converting enzyme 2 (hACE2) receptor. The viral S protein contains S1 and S2 domains that constitute the binding and fusion machinery, respectively. Structural analysis of viral S protein reveals that the virus undergoes conformational flexibility and dynamicity to interact with the hACE2 receptor. The SARS-CoV-2 variants and mutations might be associated with affecting the conformational plasticity of S protein, potentially linked to its altered affinity, infectivity, and immunogenicity. This review focuses on the current circulating variants of SARS-CoV-2 and the structure-function analysis of key S protein mutations linked with increased affinity, higher infectivity, enhanced transmission rates, and immune escape against this infection.
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Affiliation(s)
- Deepali Gupta
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi,, Delhi, 110029, India
| | - Priyanka Sharma
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi,, Delhi, 110029, India
| | - Mandeep Singh
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi,, Delhi, 110029, India
| | - Mukesh Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi,, Delhi, 110029, India
| | - A S Ethayathulla
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi,, Delhi, 110029, India
| | - Punit Kaur
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi,, Delhi, 110029, India.
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