scholarly journals Some Findings on Genes over SARS-CoV2 Genomes

Author(s):  
Sk Sarif Hassan ◽  
Atanu Moitra ◽  
Pabitra Pal Choudhury ◽  
Prasanta Pramanik ◽  
Siddhartha Jana

Coronaviruses are a large family of RNA viruses which cause respiratory infections ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS), Severe Acute Respiratory Syndrome (SARS) and COVID-19. This article highlights some key findings based on a thorough scanning of genes of 470 SARS-CoV2 genomes, including the co-presence of ORF7a and ORF8 over the 251 SARS-CoV2 genomes and the absence of the gene ORF7b over the 219 SARS-CoV2 genomes collected from various countries including India.

Author(s):  
Sk Sarif Hassan ◽  
Atanu Moitra ◽  
Pabitra Pal Choudhury ◽  
Prasanta Pramanik ◽  
Siddhartha Sankar Jana

Coronaviruses are a large family of RNA viruses which cause respiratory infections ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS), Severe Acute Respiratory Syndrome (SARS) and COVID-19. This article highlights some key findings based on a thorough scanning of genes of 475 SARS-CoV2 genomes, including the co-presence of ORF7a and ORF8 over the 256 SARS-CoV2 genomes and the absence of the gene ORF7b over the 219 SARS-CoV2 genomes collected from various countries including India. The presence of the gene ORF7b is found in the SARS-CoV2 genomes containing the L-type strain which is reported to having much higher virulence as compared to the S-type strain.


2020 ◽  
Vol 35 (1-2) ◽  
Author(s):  
Pradeep Pagaria ◽  
L. R. Choudhary ◽  
Haridayal Choudhary ◽  
Ganga Ram ◽  
Turfan Khan

Coronavirus outbreak was first reported in Wuhan, China on 31 December, 2019. Coronavirus (CoV) is a large family of viruses that causes illness. It ranges from the common cold to more severe diseases like Middle East Respiratory Syndrome (MERS-CoV) and Severe Acute Respiratory Syndrome (SARS-CoV). The novel coronavirus is a new strain of virus that has not been identified in human so far.


2020 ◽  
Vol 8 (7) ◽  
pp. 991 ◽  
Author(s):  
Ahmed Mostafa ◽  
Ahmed Kandeil ◽  
Mahmoud Shehata ◽  
Rabeh El Shesheny ◽  
Abdallah M. Samy ◽  
...  

Coronaviruses belong to a large family of viruses that can cause disease outbreaks ranging from the common cold to acute respiratory syndrome. Since 2003, three zoonotic members of this family evolved to cross species barriers infecting humans and resulting in relatively high case fatality rates (CFR). Compared to Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV, CFR = 10%) and pandemic Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2, CFR = 6%), the Middle East Respiratory Syndrome Coronavirus (MERS-CoV) has scored the highest CFR (approximately 35%). In this review, we systematically summarize the current state of scientific knowledge about MERS-CoV, including virology and origin, epidemiology, zoonotic mode of transmission, and potential therapeutic or prophylactic intervention modalities.


2020 ◽  
Vol 6 (2) ◽  
pp. 43-43
Author(s):  
S. Kalimuthu ◽  

Corona viruses are a large family of viruses that are known to cause illness ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS) and Severe Acute Respiratory Syndrome (SARS). A novel corona virus (Co V) is a new strain of corona virus that has not been previously identified in humans. Corona viruses can be transmitted from person to person, usually after close contact with an infected patient. There is no specific treatment for disease caused by a novel corona virus. In this Hypothesis, the author proposes an alternative herbal inhaler, syrup, drug and a vaccine for curing Covid-19.


2020 ◽  
Vol 144 (8) ◽  
pp. 920-928 ◽  
Author(s):  
David A. Schwartz ◽  
Amareen Dhaliwal

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the agent of coronavirus disease 2019 (COVID-19), is similar to 2 other coronaviruses, SARS-CoV and Middle East respiratory syndrome coronavirus (MERS-CoV), in causing life-threatening maternal respiratory infections and systemic complications. Because of global concern for potential intrauterine transmission of SARS-CoV-2 from pregnant women to their infants, this report analyzes the effects on pregnancy of infections caused by SARS-CoV-2 and other respiratory RNA viruses, and examines the frequency of maternal-fetal transmission with SARS-CoV-2, severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), influenza, respiratory syncytial virus (RSV), parainfluenza (HPIV), and metapneumovirus (hMPV). There have been no confirmed cases of intrauterine transmission reported with SARS-CoV-2 or any other coronaviruses—SARS and MERS. Influenza virus, despite causing approximately 1 billion annual infections globally, has only a few cases of confirmed or suspected intrauterine fetal infections reported. Respiratory syncytial virus is an unusual cause of illness among pregnant women, and with the exception of 1 premature infant with congenital pneumonia, no other cases of maternal-fetal infection are described. Parainfluenza virus and hMPV can produce symptomatic maternal infections but do not cause intrauterine fetal infection. In summary, it appears that the absence thus far of maternal-fetal transmission of the SARS-CoV-2 virus during the COVID-19 pandemic is similar to other coronaviruses, and is also consistent with the extreme rarity of suggested or confirmed cases of intrauterine transmission of other respiratory RNA viruses. This observation has important consequences for pregnant women because it appears that if intrauterine transmission of SARS-CoV-2 does eventually occur, it will be a rare event. Potential mechanisms of fetal protection from maternal viral infections are also discussed.


2020 ◽  
Vol 10 (3) ◽  
pp. 251-253
Author(s):  
Tooba Masood

Coronavirus belongs to a large family of viruses that usually cause respiratory illness in human beings that can be mild and severe depending upon the strain. In 2002, the outbreak of SARS (severe acute respiratory syndrome) reported more than 8000 infected cases with 774 mortalities. In 2012, the outbreak of MERS (middle east respiratory syndrome) infected around 2494 people and 858 deaths were reported according to the WHO. In January 2020, a new strain of coronavirus named 2019-nCoV has been identified in China. The number of confirmed cases has been increasing reaching 5,593,631 cases worldwide with 353,334 deaths up till 28th May 2020 according to WHO situation report-129. Concerned authorities are working on minimizing its spread. Prevention guidelines have been released by WHO, hoping to control the transmission and save the world from the effects of this novel virus.


2021 ◽  
Vol 17 (8) ◽  
pp. e1009857
Author(s):  
Michelle N. Vu ◽  
Vineet D. Menachery

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) emerged as a virus with a pathogenicity closer to Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV) and Middle East Respiratory Syndrome Coronavirus (MERS-CoV) and a transmissibility similar to common cold coronaviruses (CoVs). In this review, we briefly discuss the features of the receptor-binding domain (RBD) and protease cleavage of the SARS-CoV-2 spike protein that enable SARS-CoV-2 to be a pandemic virus.


2020 ◽  
Vol 2020 (4) ◽  
Author(s):  
Stephen P.H. Alexander ◽  
Jonathan K. Ball ◽  
Theocharis Tsoleridis

Coronaviruses are large, often spherical, enveloped, single-stranded positive-sense RNA viruses, ranging in size from 80-220 nm. They can cause diseases ranging from the common cold to severe acute respiratory syndrome (SARS).


2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Angel Yun-Kuan Thye ◽  
Priyia Pusparajah ◽  
Loh Teng-Hern Tan ◽  
Jodi Woan-Fei Law ◽  
Vengadesh Letchumanan ◽  
...  

The virus responsible for the COVID-19 pandemic is the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which belongs to the genus Betacoronavirus. This genus also includes the severe acute respiratory syndrome coronavirus (SARS-CoV) and the Middle East respiratory syndrome coronavirus (MERS-CoV). The common symptoms of COVID-19 infection are fever and respiratory symptoms, but it can also involve the gastrointestinal tract (GIT), resulting in manifestations such as diarrhea, nausea and/or vomiting and abdominal pain. The emergence of COVID-19 led to public health emphasis on droplet transmission and precautions of contact with respiratory secretions. However, mounting evidence demonstrates detection of SARS-CoV-2 RNA in stool samples of COVID-19 patients. It has also been demonstrated that the host receptor angiotensin-converting-enzyme-2 (ACE-2) is highly expressed not just in respiratory cells but also in gastrointestinal sites involving the glandular cells of gastric, duodenal, and rectal epithelium. This suggests that SARS-CoV-2 can infect the digestive system, serving as another route of transmission. This review aims to study the prevalence of some of the gastrointestinal manifestations following COVID-19 infection and findings of positive SARS-CoV-2 RNA in stool specimens while making parallels to the severe acute respiratory syndrome (SARS) and the Middle East respiratory syndrome (MERS) infection. We will also discuss the possible pathophysiology of COVID-19 related gastrointestinal involvement.


2020 ◽  
Vol 54 (4s) ◽  
pp. 5-15
Author(s):  
Magdalene A. Odikro ◽  
Ernest Kenu ◽  
Keziah L. Malm ◽  
Franklin Asiedu-Bekoe ◽  
Charles L. Noora ◽  
...  

Coronaviruses are RNA viruses that cause respiratory, hepatic and neurological diseases in domestic and wild animals, and humans. Among humans, six species of coronavirus have been identified to cause disease. Among these, Severe Acute Respiratory Syndrome (SARS-CoV) and Middle East Respiratory Syndrome (MERS-CoV) are of zoonotic origin and have been known to cause severe acute respiratory syndrome outbreaks among humans.


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