ABSTRACT
The new emerging coronavirus SARS-CoV2 is an alerting pandemic worldwide. Understanding the epidemiology, viral behavior in the host, and the severity of the disease in an infected patient is a demanding approach for the healthcare system which lead to plan and contemplate the response for further waves of the same virus and even other related viruses. The evaluation of the protection measurements along with analyzing the recorded data of epidemiology and spread provides thorough insights toward the new Coronavirus modes of transmission, infection, and severity. Kurdistan Region of Iraq was hit by the SARS-CoV2 on March 2020 when first confirmed case recorded. The present paper analyzed a full month data of confirmed hospitalized and quarantined cases with regard to age, sex, geographical distribution. The highest risks were shown to be males of their young ages of 30-39 years old in Sulaimani province due to the social structure of the Kurdish population and the geographical position of Sulaimani. Social integration played a significant role in the spreading the virus in all cities of Kurdistan first onset of the virus in the community. Diagnosed hospitalized cases were mostly suffered from high fever, dry cough and breathing difficulties. The mortality rate was shown to be reasonable, and the majority of the cases were recovered after hospitalization and receive supportive treatment. Social distancing and total lockdown played a significant role in viral spread containment. The health authorities prevented devastating outbreak through tracing all the cases and their contacts, isolating the suspicious contacts, quarantining the neighborhoods were the virus found. Further investigation is needed in a larger scale of data in order to be armed with adequate knowledge for any other waves of COVID-19 in the region.Copyright © 2020 Ubiquity Press. All rights reserved.
ABSTRACT
Viruses are one of the main reasons that cause healthy cells to proliferate and become cancerous. Several viruses have been identified as causative factors for various forms of cancer. Tumor occurrence can be caused by viral oncoprotein activity, persistent infection or inflammation. The molecular process is still complicated to be understood. In recent decades, Homo sapiens cell microRNA (hsa-miRNA) has been discovered by small non-coding RNAs that affect post-transcriptional gene expression. hsa-miRNA is a key control factor for several key biological processes and has a much greater impact on the target gene group. even though they occupy a small part of the genome, they play a great role in the development of cancer. Several viruses produce this tiny RNA, which can regulate their gene expression or affect the host's gene expression. A new hypothesis is that Epstein-Barr virus (EBV) is the first cancer causing virus that is found to produce microRNAs (v-miRNAs). In addition, evidence shows that miRNA encoded by EBV contributes to the occurrence and progression of EBV-related malignancies. Generally, these compounds reduce messenger RNA (mRNA) instability, such as genes that regulate tumorigenesis mechanisms like inflammation, cell cycle control, stress response, differentiation, apoptosis, invasion, and immune pathways. Therefore, EBV-miRNAs are important in the complex interaction between host, virus and EBV tumorigenesis. In terms of malignant tumors, the combinatorial process behind EBV-miRNA still needs further study. In this article, we will introduce EBV-miRNA, including the cellular processes affected by the virus, and their ability to promote cancer.
ABSTRACT
COVID-19 is the deadly respiratory disease of the century caused by new type unknown origin Coronavirus. The recent effort of the word researchers is toward finding the origin of the virus. The current study investigated the extent of molecular similarity and divergence between SARS-CoV2 and other related Coronavirus. An attempt has been made to investigate the epidemiological study of this new contagious virus using molecular biology techniques. The phylogenetic trees for all human coronaviruses with the novel Coronavirus have been built using a several complete amino acid sequences of the four known structural proteins, S (spike), E (envelope), M (membrane), and N (nucleocapsid). The result of the study revealed that the SARS-CoV2 is related to human SARS-CoV isolated from different countries very cloely, especially those strains recovered from China in recent times, 2020. The evolutionary changes observed in the inserted 23 amino acids in the RNA binding domain (RBD) of the coronvirus spike glycoprotein which cannot be detected in any other human coronavirus. Moreover, the 2019-nCoV is not closely related to other alpha, beta and gamma human Coronavirus, including MERS-CoV. The current study concluded that 2019-nCoV is more likely believed to originated from SARS-CoV. The probability is more vital to be originated from the strain isolated in China in 2020, which is coincident with the spraed of COVID-19 in the same country. The phyloepidemiologic analyses suggested that the coronaviruses are circulating in human hosts evolving gradually by times in response to the different environment stimuli facing the virus inside the host in different geographical areas. Furthermore, the analysis showed the flow of transmission, and evolutionary changes of SARS-CoV2 which may be directed from the transmission of SARS-CoV from human to Bat and Pangolin then jumped to human again in the crowded market Wuhan city in China.