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1.
J Biochem ; 173(6): 447-457, 2023 May 29.
Article in English | MEDLINE | ID: covidwho-2235398

ABSTRACT

The interaction of the ß-coronavirus severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) nucleocapsid (N) protein with genomic RNA is initiated by specific RNA regions and subsequently induces the formation of a continuous polymer with characteristic structural units for viral formation. We hypothesized that oligomeric RNAs, whose sequences are absent in the 29.9-kb genome sequence of SARS-CoV-2, might affect RNA-N protein interactions. We identified two such hexameric RNAs, In-1 (CCGGCG) and G6 (GGGGGG), and investigated their effects on the small filamentous/droplet-like structures (< a few µm) of N protein-genomic RNA formed by liquid-liquid phase separation. The small N protein structures were sequence-specifically enhanced by In-1, whereas G6 caused them to coalesce into large droplets. Moreover, we found that a guanosine 12-mer (G12, GGGGGGGGGGGG) expelled preexisting genomic RNA from the small N protein structures. The presence of G12 with the genomic RNA suppressed the formation of the small N protein structures, and alternatively apparently altered phase separation to induce the formation of large droplets with unclear phase boundaries. We showed that the N-terminal RNA-binding domain is required for the stability of the small N protein structures. Our results suggest that G12 may be a strong inhibitor of the RNA-N protein interaction.


Subject(s)
COVID-19 , SARS-CoV-2 , Humans , SARS-CoV-2/genetics , Nucleocapsid Proteins/chemistry , Nucleocapsid Proteins/genetics , Nucleocapsid Proteins/metabolism , RNA, Viral/genetics , RNA, Viral/chemistry , RNA, Viral/metabolism , Protein Binding
2.
Ann Med Surg (Lond) ; 77: 103656, 2022 May.
Article in English | MEDLINE | ID: covidwho-1800210

ABSTRACT

Background: COVID-19 was initially detected in China's Wuhan, the capital of Hubei Province, in December 2019, and has since spread throughout the world, including Ethiopia. Long-term epidemics will overwhelm the capacity of hospitals and the health system as a whole, with dire consequences for the developing world's damaged health systems. Focusing on COVID-19-related activities while continuing to provide essential services such as emergency and essential surgical care is critical not only to maintaining public trust in the health system but also to reducing morbidity and mortality from other illnesses. The goal of this study was to see how COVID-19 affected essential and emergency surgical care in Gedeo and Sidama zone hospitals. Method: ology: A cross-sectional study was carried out in ten (10) hospitals in the Gedeo and Sidama zone. The information was gathered with the help of the world health organization (WHO) situational analysis tool for determining emergency and essential surgical care (EESC) capability. Infrastructure, human resources, interventions, and EESC equipment and supplies were used to assess the hospitals' capacity. Result: 54.3% of the 35 fundamental therapies indicated in the instrument were available before COVID-19 at all sites, while 25.2 percent were available after the COVID-19 pandemic. During the COVID-19 pandemic, there was a sharing of resources for treatment centers, such as a scarcity of oxygen and anesthesia machines, and emergency surgery was postponed. Before admission, the average distance traveled was 58 km. Conclusion: The COVID-19 pandemic, as well as existing disparities in infrastructure, human resources, service provision, and essential equipment and supplies, reveal significant gaps in hospitals' capacity to provide emergency and essential surgical services and effectively address the growing surgical burden of disease and injury in Gedeo and Sidama zone primary, general, and referral hospitals.

3.
Early Child Res Q ; 60: 319-331, 2022.
Article in English | MEDLINE | ID: covidwho-1783300

ABSTRACT

The COVID-19 pandemic and its resulting containment measures have forced many children and their caregivers around the world to spend unprecedented amounts of time at home. Based on a sample of 764 households with preschool-aged children in Wuhan, China, where the pandemic began, this study examined how primary caregivers perceived changes in the amount of time spent engaging with their children (i.e., engaged time) from the start of the pandemic and whether these changes were associated with children's learning behavior and emotional distress. The results showed that primary caregivers generally perceived increases in the amount of engaged time spent on indoor activities with their children but decreases in the amount of engaged time spent playing with their children outdoors. A bigger family size and greater loss of family income during the pandemic were associated with bigger perceived increases in caregivers' engaged time spent on indoor activities, whilst a higher level of parental education was associated with bigger perceived decreases in engaged time spent playing with children outdoors. The family's poorer physical health and higher levels of chaos during the pandemic were related to smaller perceived increases in caregivers' engaged time spent on educational activities. Finally, although bigger perceived increases in caregivers' indoor engaged time (e.g., time spent on educational activities) were associated with higher levels of positive learning behavior and fewer symptoms of anxiety and withdrawal in the children, bigger perceived decreases in outdoor play time were associated with fewer symptoms of anxiety and withdrawal. These findings offer valuable insights into caregivers' allocation of engaged time with their preschool-aged children during the COVID-19 pandemic.

4.
J Family Med Prim Care ; 9(11): 5474-5479, 2020 Nov.
Article in English | MEDLINE | ID: covidwho-993875

ABSTRACT

The outbreak of the new coronavirus in Wuhan, Chinese Hubei City (COV-2) was also known as COVID-19 and has spread to more than 213 countries, zones or territories worldwide, and is an emergency of international public health with no antiviral drugs or vaccines; and, also, the presencouragement of the disease has become a global public health emergency. This novel coronavirus is now the seventh member of the coronaviridae family, known for infecting humans and showing evidence of causing gastric symptoms, and has the potential to be transmitted through the fecal-oral route according to a new report published online by physicians at Shanghai Jiao Tong University (Gastroenterology. 2020 March 3. doi: 10.1053/j.gastro. 2020.02.054). Here we identify the efforts to compile and disseminate the COVID-19 epidemiological information on Its potential G.I. Demonstration of news media and social networks, and few newspapers recently published. Physicians should know, how GI manifestation discussed in different publications to suspect CORONA virus infection in that patients who does not have any upper and lower respiratory tract symptom and intervein to discuss the disease severity and duration. It will increase the threshold of suspicion of physician toward Covid-19 disease.

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