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1.
Chinese Journal of Nosocomiology ; 33(4):522-526, 2023.
Article in Chinese | GIM | ID: covidwho-20244455

ABSTRACT

OBJECTIVE: To investigate the expressions of peripheral blood microRNA-21(miR-21) and transforming growth factor-beta(TNF-beta)/Smad signaling transduction pathway in patients with bronchial asthma complicated with respiratory virus infection. METHODS: Totally 109 patients with asthma complicated with respiratory virus infection(study group) and 104 patients without virus infection(control group) in the Third People's Hospital of Gansu Province between Feb.2019 and Feb.2021 were selected for the cross-sectional study. The basic data of the two groups were collected, and parameters including vital signs, lung function, peripheral blood miR-21 and TGF-beta/Smad signaling pathway proteins were measured. According to the guidelines, the patients of the two groups were divided into acute exacerbation phase and stable phase. The examination results of each group were compared and the levels of peripheral blood miR-21 and TGF-beta/Smad signaling pathway proteins expression of patients with asthma complicated with respiratory virus infection were analyzed. RESULTS: In study group, the proportion of respiratory virus infection among 109 patients was 33.94% for influenza virus, 23.85% for human rhinovirus, 19.27% for respiratory syncytial virus, 10.09% for parainfluenza virus, 6.42% for adenovirus, 4.59% for human coronavirus and 1.83% for human metapneumovirus respectively. The proportion of patients with acute exacerbation phase in the study group was higher than that in the control group, and the levels of peripheral blood miR-21, TGF-beta1, Smad7, pSmad2 and pSmad3 were higher than those in control group(P<0.05). The levels of miR-21, TGF-beta1, Smad2, Smad3, Smad7, pSmad2 and pSmad3 in peripheral blood of patients with acute exacerbation phase of asthma were higher than those of patients with stable phase of asthma(P<0.05). There were no statistical differences in peripheral blood miR-21, TGF-beta1, Smad2, Smad3, Smad7, pSmad2 and pSmad3 levels in asthma patients with different virus infections. CONCLUSION: Early respiratory virus infections might lead to increased expression of peripheral blood miR-21 and increased activation of TGF-beta/Smad signaling pathway in patients with asthma, which played an important role in acute attack of asthma.

2.
Indonesian Journal of Cancer Chemoprevention ; 13(3):195-206, 2022.
Article in English | CAB Abstracts | ID: covidwho-20239622

ABSTRACT

COVID-19 is an infectious disease caused by Severe Acute Respiratory Syndrome (SARS-CoV-2), causing a global health emergency as a pandemic disease. The lack of certain drug molecules or treatment strategies to fight this disease makes it worse. Therefore, effective drug molecules are needed to fight COVID-19. Non Structural Protein (NSP5) or called Main Protease (Mpro) of SARS CoV 2, a key component of this viral replication, is considered a key target for anti-COVID-19 drug development. The purpose of this study is to determine whether the compounds in the Melaleuca leucadendron L. plant such as 1,8-cineole, terpene, guaiol, linalol, a-selinenol, beta-eudesmol and P-eudesmol are predicted to have antiviral activity for COVID-19. Interaction of compounds with NSP5 with PDB code 6WNP analyzed using molecular docking with Molegro Virtual Docker. Based on binding affinity, the highest potential as an anti-viral is Terpineol with binding energy (-119.743 kcal/mol). The results of the interaction showed that terpinol has similarities in all three amino acid residues namely Cys 145, Gly 143, and Glu 166 with remdesivir and native ligand. Melaleuca leucadendron L. may represent a potential herbal treatment to act as: COVID-19 NSP5, however these findings must be validated in vitro and in vivo.

3.
African Crop Science Journal ; 31(2):133-149, 2023.
Article in French | CAB Abstracts | ID: covidwho-20237695

ABSTRACT

Iron and zinc are important minerals in humans in sub Saharan Africa, whose deficiency is known as "hidden hunger" due to the lack of recognised symptoms in the early stages. Although iron deficiency is the most prevalent, zinc is also involved in inhibition of replication of viruses, including the corona virus (COVID-19). In North Kivu and South Kivu provinces where more than 50% of common bean is produced and consumed in Democratic Republic of Congo, 36% and 47% of preschool children are anemic due to iron deficiency. This paradox is mainly due to insufficiency of iron-rich foods. The aim of this study is to characterise 59 iron and zinc biofortified varieties together with six local varieties of common bean for a potential selection programme in Butembo town in the Democratic Republic of Congo. We focused on 15 qualitative and five quantitative parameters. The qualitative parameters were helpful to distinguish the different morphotypes and for cluster analysis. In addition to the descriptive statistics, the quantitative data were used for Pearson correlation and for principal component analysis, PCA. Qualitative parameters enabled grouping of the study genotypes into 14 morphotypes according to the aspect and colour of the seed coat, the colour around the hilum and the size of seeds. Clustering grouped the 65 genotypes into 12 clusters with the most similar genotypes grouped in the same cluster. Quantitative parameters showed that the study genotypes were dissimilar (P=0.00). A positive correlation was obtained between the days to flowering and the days to maturity (P<0.05) and between the number of pods per plant and the days to flowering. A strong correlation was found between the number of pods per plant and seeds per pod (P<0.01). In contrast, a negative correlation was observed between the 100 seed weight and the number of seeds per pod. The PCA represented on two perpendicular axes showed 64.1% of the total variance of which the 42.3% is explained by the first axis and 21.8% by the second axis. Overall, the study genotypes are morphologically and quantitatively different and thus can be used in a selection programme.

4.
Food Protection Trends ; 43(3):215-222, 2023.
Article in English | CAB Abstracts | ID: covidwho-20237541

ABSTRACT

Amid the COVID-19 pandemic, mask-wearing has become a common practice in the foodservice industry to prevent the spread of respiratory diseases. Like kitchen utensils, a mask may serve as a vehicle for cross-contamination of pathogens during food handling. The objective of this study was to quantify cross-contamination between tasks of handling contaminated chicken and chopping lettuce. Chicken breasts were inoculated with a high or a low level of nonpathogenic Escherichia coli surrogates (ca. 6 or 4 log CFU/ml) and sliced for 1, 5, or 10 min. During slicing, duplicate, single-use medical masks were touched each minute. One mask was immediately sampled, but the second mask was used to contaminate lettuce by touching the mask each minute while chopping the lettuce for 5 min. E. coli were enumerated from the second mask and lettuce. Masks touched while slicing both high- and low-inoculated chicken showed significant contamination (0.8-4.9 log CFU/cm2) after each slicing scenario of 1, 5, or 10 min (P > 0.05). Lettuce was significantly contaminated regardless of inoculation level (1.0-3.2 log CFU/g). Slicing time was a significant factor in some cases (P < 0.05), whereas inoculation level was not (P > 0.05). Data indicate masks can be a source of cross-contamination if not replaced appropriately.

5.
Journal of Agricultural & Food Industrial Organization ; 21(1):89-98, 2023.
Article in English | CAB Abstracts | ID: covidwho-20235252

ABSTRACT

Bangladesh imports roughly 98% of cotton from abroad to produce fabric or yarn (USDA 2020. Cotton and Products Update. Bangladesh. Also available at https://apps.fas.usda.gov/newgainapi/api/Report/DownloadReportByFileName?fileName=Cotton%20and%20Products%20Update_Dhaka_Bangladesh_11-30-2020). The production of textiles in Bangladesh depends on the price of raw material, the demand for garment products in the importing countries, smooth supply chain management, and the domestic supply of cheap garment laborers. The global pandemic of COVID-19 disrupted the supply chain of almost all physical goods and services, including textiles. It caused the price of textiles to fall due to a drop in worldwide demand, and increased the marginal cost of textile production due to supply chain interruptions. This paper shows how the decline in the demand for garments, coupled with an increase in cost, shrinks the producer welfare of textile manufacturing and garment exports of the small producing country, Bangladesh.

6.
Agricultural Economics and Rural Development ; 19(2):239-253, 2022.
Article in English | CAB Abstracts | ID: covidwho-20235030

ABSTRACT

Romania ranks first in the European Union for the production of sunflower seeds, third for the production of soybeans and seventh for the production of rapeseed. The paper aims to analyse the effects produced by the COVID-19 pandemic on the evolution of the oilseed sector in Romania. Thus, the following indicators were analysed: evolution of areas under oilseeds, total oilseed production and average yields, as well as the volatility of selling prices for oilseeds. The results of the study reveal that Romania has been the largest producer of sunflower seeds in the European Union. The average yields in sunflower, soybeans and rapeseed have shown great variations in the analysed period. According to Eurostat data, it can be noticed that although Romania is the third large producer of oilseeds in the EU, the average yields continue to be low compared to those from other large EU producers. Yields are also among the most volatile in the EU. The selling prices for soybeans showed a higher increase in the year 2020 than in 2019 in Romania, compared to the increase in the average selling prices of the EU-27 (+9.89%). The selling prices for rapeseed also had a higher increase in 2020 than in 2019 in Romania, compared to the increase in the average selling prices of the EU-27 (+2.31%).

7.
Indian Journal of Ecology ; 50(1):79-84, 2023.
Article in English | CAB Abstracts | ID: covidwho-20232608

ABSTRACT

Climate change events and the COVID-19 pandemic have brought to focus the significance of cassava as a supplementary food crop worldwide. However, the high yield potential of the crop necessitates timely and adequate enrichment of the soil with nutrient inputs. Consortium biofertilizers offer a viable option for reducing intensive fertilizer use to sustain soil health and productivity in cassava. The efficacy of a liquid consortium biofertilizer, specifically a plant growth-promoting rhizobacteria (PGPR) Mix - I, in economizing nutrient use in cassava was evaluated in a 4 x 3 factorial randomized block design, replicated thrice. The treatments consisted of combinations of four levels of biofertilizers and three levels of nutrients. Biometric and yield observations were recorded, and soil properties were analyzed before and after the harvest of the crop. The results showed that the liquid biofertilizer consortium at a concentration of 5% + 75% of the recommended dose, with 37.5:37.5:75 kg NPK/ha as chemical fertilizers, recorded significantly superior tuber yield in cassava. Considering the economics, the application of the PGPR liquid formulation (5%) thrice (basal, 2 and 4 MAP) along with 37.5:37.5:75 kg NPK/ha, or at a concentration of 2% with 50:50:100 kg NPK/ha, realized higher benefit-cost ratios and can be recommended for use in cassava.

8.
Journal of Agricultural & Food Industrial Organization ; 21(1):1-98, 2023.
Article in English | CAB Abstracts | ID: covidwho-20231626

ABSTRACT

This special issue consists of seven articles examining the impacts of the COVID-19 pandemic on the markets of selected commodities, including: seafood, lumber, crawfish, cattle/beef, fruits and vegetables in the USA, cotton and garments in Bangladesh, and fuel oil globally.

9.
Zhongguo Yufang Shouyi Xuebao / Chinese Journal of Preventive Veterinary Medicine ; 44(10):1076-1083, 2022.
Article in Chinese | CAB Abstracts | ID: covidwho-2323056

ABSTRACT

Swine acute diarrhea syndrome coronavirus (SADS-CoV), a newly discovered enteric coronavirus, is the etiological agent that causes severe clinical diarrhea and intestinal pathological damage in piglets. In this study, Vero E6 and IPI-2I cells were pretreated with different concentrations of glycyrrhizin (GLY) for 2 hours, and then infected with different concentrations of SADSCoV, aiming to investigate the inhibitory effect of GLY on SADS-CoV. Western blot and TCID50 results revealed a significantly decreased N protein expression and viral titer, indicating that GLY can inhibit the infection of SADS-CoV. Vero E6 and IPI-2I cells were pretreated with different concentrations of GLY for 2 hours and infected with SADS-CoV. Western blot results showed that when the concentration of GLY was 0.8 mmol/L, the expression of N protein decreased significantly, indicating that GLY inhibited the invasion of the virus. At first, cells were treated with 0.4 mmol/L GLY, and cell samples were collected at 2 hours, 6 hours and 12 hours after being infected with SADS-CoV for analysis, and the expression of N protein were found to be significantly reduced at all points, indicating that GLY had a significant inhibitory effect on the replication of the virus. GLY is a competitive inhibitor of high mobility group box 1 (HMGB1), and the receptors of HMGB1 mainly include TLR4 and RAGE. Based on this fact, the mutant plasmid at the key sites of HMGB1 (C45S, C106S, C45/106S) and the siRNA of the RAGE receptor were transfected to Vero E6 cells and infected with SADS-CoV, and the cell supernatant and samples were harvested. The western blot and TCID50 results showed that the expression of N protein and the virus titer were decreased, suggesting that GLY exerts its function by affecting the binding of HMGB1/TLR4/RAGE during SADS-CoV infection. To further explore the signaling pathway through which GLY functions, Vero E6 and IPI-2I cells were inoculated with SADS-CoV, and cell samples were harvested, western blot was used to detect the changes of MAPK proteins. The results showed that the protein expression levels of p-p38, p-JNK and p-ERK were up-regulated in the early and late stages, indicating that the MAPK pathway was activated by SADS-CoV infection. Vero E6 and IPI-2I were pretreated with different concentrations of GLY and TLR4 inhibitor TAK for 2 hours and infected with SADS-CoV. Protein samples were harvested and analysed by western blot which showed a decreased p-JNK and N proteins, while other proteins showed no significant changes. These results indicated that GLY and TAK regulated the phosphorylation of JNK but did not regulate the phosphorylation of p38 and ERK. Also, Vero E6 cells were treated with HMGB1 antibody, the siRNA of HMGB1 and HMGB1 mutants plasmid, and infected with SADS-CoV. Protein samples were harvested, western blot results showed that phosphorylation of JNK decreased, indicating that HMGB1 affected JNK phosphorylation. Finally, Vero E6 and IPI-2I cells were pretreated with different concentrations of JNK inhibitor SP600125 to infect SADS-CoV, western blot, TCID50 and IFA results showed that the expression of N protein and virus titer, as well as virus replication were reduced, indicating that SP600125 inhibited virus replication. In conclusion, our results revealed that GLY can inhibit in vitro replication of SADS- CoV, mainly through the HMGB1/TLR4/JNK signaling pathway. The discovery of this pathway provides theoretical support for the research of novel anti-SADS-CoV drugs.

10.
Journal of the Chilean Chemical Society ; 67(3):5656-5661, 2022.
Article in English | CAB Abstracts | ID: covidwho-2326837

ABSTRACT

The novel coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) began in Wuhan, China, in December 2019 and quickly spread across the worldwide. It becomes a global pandemic and risk to the healthcare system of almost every nation around the world. In this study thirty natural compounds of 19 Indian herbal plants were used to analyze their binding with eight proteins associated with COVID -19. Based on the molecular docking as well as ADMET analysis, isovitexin, glycyrrhizin, sitosterol, and piperine were identified as potential herbal medicine candidates. On comparing the binding affinity with Ivermectin, we have found that the inhibition potentials of the Trigonella foenum-graecum (fenugreek), Glycyrrhiza glabra (licorice), Tinospora cordifolia (giloy) and Piper nigrum (black pepper) are very promising with no side-effects.

11.
Avicenna Journal of Phytomedicine ; 13(3):265-279, 2023.
Article in English | CAB Abstracts | ID: covidwho-2319807

ABSTRACT

Objective: Severe disease onset of COVID-19 may result in alveolar injury and respiratory failure. Apoptosis and inflammation are the main causes of respiratory distress syndrome. Berberine is used in medicine as an analgesic, anti-asthmatic, anti-inflammatory, and antiviral. In the current investigation, the effect of berberine on COVID-19 outpatients was studied. Materials and Methods: The present clinical trial was performed on 40 outpatients who were randomly assigned to berberine (300 mg, TID, 2 weeks) (n=19) or placebo groups (n=21). Both groups received standard therapy and they were monitored on days 3, 7, and 14 after the beginning of the therapy for clinical symptoms' improvement, quantitative CRP, lymphopenia, CBC, and SpO2. The severity and frequency of these symptoms and the level of the parameters were statistically compared between the two groups. Results: On days 0, 3, 7, and 14, there was no significant difference between the berberine and placebo groups in the improvement of clinical symptoms (cough, shortness of breath, nausea, loss of smell and taste, diarrhea, dizziness, sore throat, stomachache, body aches, and body temperature), quantitative CRP, lymphopenia, WBC, neutrophils, platelets, or SpO2. Conclusion: Berberine (300 mg, TID, two weeks) is ineffective in treating COVID-19. More research with a larger sample size is needed to investigate different berberine dosages in other pharmaceutical formulations.

12.
African Journal of Pharmacy and Pharmacology ; 17(1):1-9, 2023.
Article in English | CAB Abstracts | ID: covidwho-2319486

ABSTRACT

Many studies have dealt with the medicinal properties of Jatropha curcas;however, there are limited studies on the scope of its antiviral potential. This is a fact associated with the current challenges posed by HIV-AIDS and COVID-19, which has reinforced the need to expand the knowledge about its antiviral resource. Based on the search for natural products with anti-HIV-1 and anti-SARS-CoV-2 activities, this work analyzed the extract of J. curcas seed, the structure of the plant whose antiviral references were not found in the literature, and the compounds that can potentiate it as a candidate for herbal medicine. GC-MS analysis was used to screen for the active substances of the J. curcas seeds, and the literature was searched to find those with anti-HIV-1 and anti-SARS-CoV-2 indication. The results showed they have 27 compounds, of which glycerol 1-palmitate, stigmasterol and gamma-sitosterol were shown to have antiviral action in the literature. Regarding glycerol 1-palmitate, no detailed description of its antiviral action was found. Stigmasterol and gamma-sitosterol act as anti-HIV-1 and anti-SARS-CoV-2, respectively, inhibiting the reverse transcriptase of HIV-1, the proteases 3CLpro, PLpro and the spike proteins of SARS-CoV-2. However, despite the fact that the extract of J. curcas seeds consist of antiviral compounds that fight against the etiological agents of HIV-AIDS and COVID-19, it is concluded that there is a need to deepen this evidence, by in vitro and in vivo assays.

13.
Revista Sitio Novo ; 7(1):32-46, 2023.
Article in Portuguese | CAB Abstracts | ID: covidwho-2319328

ABSTRACT

This study verified the influence of the addition of castanets almond flour (Terminalia catappa L.) in the fermentation process of bread, analyzing attributes such as volume, weight, color, and flavor. The actions were coordinated remotely, in a domestic environment, in the city of Fortaleza (Ceara, Brazil) due to the restrictions caused by the pandemic of the new coronavirus (SARS-CoV-2). About 2 kg of castanets were collected and the processing process included washing, pulp extraction, drying, roasting, and endocarp breaking. The ingredients were placed in a bowl and homogenized until completely incorporated, following the process of kneading, resting, kneading, shaping, fermentation and cooking. For the study, the evaluation was carried out in quadruplicate, with four samples of each dough, these being named Basic Bread (PB) and Chestnut Bread (PC). The dough showed growth between minutes 0 to 60, however, there was a regression between minutes 90 to 120. It is possible to observe that the dough reached its peak of fermentation between 30 and 60 minutes. The PB samples showed an external golden color and white crumb caused by the Maillard Reaction, possibly from the added butter, and had small alveoli. The PB sample had a neutral taste but was salty. No interference was observed in the bread fermentation process with the addition of castanets flour.

14.
International Journal of Food Science and Agriculture ; 6(2):169-174, 2022.
Article in English | CAB Abstracts | ID: covidwho-2319232

ABSTRACT

Rapid population growth, natural and man-made factors (COVID-19 and the lack of a social safety net) have led to an increase in the demand for food, which calls for significant improvements to the food system worldwide to supply food more efficiently with the same or fewer resources. Potatoes have great potential to contribute to food security and incomes for rural smallholder farmers, as well as provide nutritious, affordable food for urban consumers. The availability of disease-free and certified seed potatoes of better-performing varieties remains limited. The use of tissue culture to provide a disease-free seed potato is therefore crucial to ensuring food security. A key goal of this paper is to summarize the work done on various aspects of seed potato multiplication, and how it can improve the food security of smallholder farmers. The systematic review method was applied to summarize how tissue culture application can produce excess disease-free seed potatoes to improve food availability for marginal farmers. The most effective way for farmers in developing countries or areas prone to natural or man-made disasters to increase their incomes and improve nutrition is to use high-quality certified seeds. Tissue cultures are used worldwide to produce pre-basic, virus-free seed potatoes. Early Generation Seed (micro-tubers, cuttings and mini-tuber), multiplication of mother plants and production of apical rooted cutting for seed production for field planting are popular. The activities of diseases-free seed production start at the laboratory and end at the field with seed production for planting. In general, three major steps were used in seed potato multiplication: (1) Tissue culture (to produce disease-free tissue culture plantlets);(2) Production of cuttings (involves two important stages: (i) multiplication of mother plants and (ii) production of apical rooted cutting for planting) for further multiplication and (3) production of seeds for field planting.

15.
Plant Archives ; 22(2):184-192, 2022.
Article in English | CAB Abstracts | ID: covidwho-2318867

ABSTRACT

The taxonomic diversity and the richness of the region of Seraidi (North-East Algeria) in medicinal plants, as well as the appearance of diseases of viral origin, in particular, the current pandemic of SARS-CoV-2, led us to the realization of an ethnobotanical survey of plants with antiviral interests. The survey was conducted based on a pre-established quiz, with 120 people from different categories of the population of Seraidi, with the aim of listing the medicinal plants used in the treatment of viral diseases and collecting as much information as possible on this subject. After analyzing, the information provided by the people interviewed, we listed 32 species belonging to 20 families, of which the Lamiaceae family is the most represented. Older women are the most affected by the use of plants;people without a higher intellectual level have the most knowledge about the use of plants with antiviral interest. The leaf is the most widely used organ, in the form of a decoction or infusion, administered orally.

16.
Journal of Mycology and Plant Pathology ; 51(4):338-346, 2021.
Article in English | CAB Abstracts | ID: covidwho-2317579

ABSTRACT

In present manuscript describes synthesis of silver nanoparticles using turmeric leaves extract, traditional turmeric is a common spice that comes from the root of Curcuma longa, chemical called curcumin. Turmeric has a warm, bitter taste and is frequently used to flavor or color curry powders, mustards, butters, and cheeses. People commonly use turmeric for osteoarthritis, hay fever, depression, high cholesterol, liver disease, itching. There is also no good evidence to support using turmeric for COVID-19. Synthesis of silver nanoparticles AgNO powder was dissolved in distilled water to prepare 10 mM AgNO stock 3 3 solution from which different composition prepared. The AgNO solutions were mixed with urmeric plants 3 t leaves extract in equal proportion in flask. The flask was wrapped with an aluminum foil and was then heated in a water bath at 50-60 C for 2 hours. The synthesis of nanoparticles, which was confirmed by UVSpectra and TEM. UV-Vis spectra and visual observation showed that the color of the fresh leaf extractsof Vinca rosea turned into brownish yellow, respectively, after treatment with silver. In addition, TEM analysis confirmed that AgNO solutions for all concentrations produced ilver nanoparticles and their average size 3 s was less than 20 nm. Turmeric plants extract of fresh leaves can be used as bioreducing agents, drug resistant strains, toxic nature towards microbial agents, play an important role in nanoscience and nanotechnology, particularly in nanomedicine and potential applications in cancer diagnosis and therapy.

17.
Research Journal of Pharmacy and Technology ; 16(3):1033-1040, 2023.
Article in English | CAB Abstracts | ID: covidwho-2316967

ABSTRACT

Aim: The contagious disease COVID 19 is a recently out-broken pandemic situation which threatens humankind all over the world. Siddha system of medicine is one of the traditional medical systems of India, which has provided a novel remedy for many epidemics like Dengue, Chicken guinea earlier. On evaluating the literature evidence and considering the mortality and severity of the disease, we have attempted to identify the possible inhibition of viral replication by "Karisalai Chooranam" - a polyherbal Siddha formulation which contains herbs like Karisalai (Wedelia chinensis), Thoodhuvelai (Solanum trilobatum), Musumusukai (Melothria maderaspatana) and Seeragam (Cuminum cyminum). The aim of this study was to identify the bioactive components present in Karisalai chooranam and pin down the components that inhibit COVID 19 protease by In Silico molecular docking analysis. Material and methods: The study was performed for the active compounds present in the herbs (Wedelia chinensis - Benzoic acid, Solanum trilobatum- Disogenin, Melothria maderaspatana- beta-sitosterol, Cuminum cyminum L- Coumaric acid and Limonene) with three potential targets, PDB id: 6LU7 3-chymotrypsin-like protease (3CLpro), PDB id: 6-NUR RNA dependent RNA polymerase and PDB id: 2AJF Angiotensin-converting enzyme II (ACE2) receptor using Autodock Vina. Key findings: The active phytocomponents present in "Karisalai chooranam" was found to inhibit the target 3CL proenzyme and hereby halt the formation of 16 non-structural proteins (nsp1-nsp16) that are highly essential for viral replication and there by prevents viral survival in the host environment. The phytocomponents also inhibited the target RNA dependent RNA polymerase (PDB)-6NUR RdRp which possess versatile action in mediating nonstructural protein (nsp 12) essential for viral replication. A significant binding against the target Angiotensin-converting enzyme II (ACE2) receptors - PDB- 2AJF was found which was recognized as a binding site for novel coronavirus to cause its pathogenesis. Among the five active components present in the herb, the binding ability of Disogenin and beta-sitosterol with COVID19 protease suggests a possible mechanism of protease inhibition and thus preventing viral replication. Significance: The results strongly suggest that phytocomponents of "Karisalai chooranam" may act as a potential therapeutic agent for the management of COVID-19 and related symptoms. Further, the efficacy of the active compounds should be tested in vitro before being recommended as a drug.

18.
The Thai Journal of Pharmaceutical Sciences ; 46(3):300-306, 2022.
Article in English | CAB Abstracts | ID: covidwho-2315819

ABSTRACT

Porcine epidemic diarrhea virus (PEDV) has been affecting the swine industry, especially in suckling pigs in with a high mortality rate. Among all the strategies to overcome PEDV, boosting mucosal immunity in pig intestine via oral administration appears to be more efficient than other routes. However, there are biological obstacles such as acidic environment that could damage biologics, a product from organisms often used for PEDV treatment. The plant-derived 2C10 monoclonal antibody (mAb) from Nicotiana benthamiana produced by transient expression was revealed as one of the potential candidates against PEDV through oral delivery. Herein, we demonstrated the calcium-alginate microencapsulation system to protect the 2C10 mAb from the harsh condition in the stomach and to be released the 2C10 mAb when arriving in the intestine. The pH-responsive encapsulated 2C10 mAb microbeads were constructed from the calcium-alginate system. The microbeads were well-tolerated under the acidic environment of simulated gastric fluid (SGF) and were digested under the alkaline condition of simulated intestinal fluid (SIF). The encapsulated 2C10 mAb in the SPF-treated microbeads exhibited high virus neutralization efficiency in Vero cells when compared to the unencapsulated 2C10 mAb treated by SPF that cannot neutralize the virus. For these reasons, calcium-alginate microencapsulation system is an attractive platform to be considered as a candidate for the next generation of oral vaccine development.

19.
Biofuels ; 13(6):763-770, 2022.
Article in English | CAB Abstracts | ID: covidwho-2315549

ABSTRACT

A few industries, such as the beverage industry, have experienced some growth in sales during the COVID-19 pandemic. Globally, beverage companies alone generate over 200 million tonnes of biomass annually, which largely ends up as animal feed or in landfills. With the UK government's commitment to reduce its carbon footprint by at least 68% in 2030, many companies, especially small and medium enterprises (SMEs), are exploring options to reduce carbon emissions and develop roadmaps to become carbon neutral. It has thus become imperative for beverage companies to find value in or repurpose their waste. This paper unlocks the potential for improving the fuel properties of beverage waste through a blending process and explores the determination of optimal fractions for the blends via characterization. With an initial moisture content of 82 and 58 wt.% brewery spent grain (BSG) and spent coffee grounds (SCG), respectively, the pre-treatment process reduced moisture content by approximately 10-15 wt.%. The study concludes that biomass blending improved the fuel properties of the biomass, providing a competitive comparison with coal for energy applications.

20.
Journal of the National Science Foundation of Sri Lanka ; 50(2):387-393, 2022.
Article in English | CAB Abstracts | ID: covidwho-2315182

ABSTRACT

The importance of food supply throughout the world has once again shown its significance in the COVID-19 pandemic period. A continuous food supply is possible with correct agricultural programming. An effective agricultural product programming can only be possible by obtaining precise agricultural data. However, it is very difficult to gather accurate agricultural production statistics from all over the world and confirm their accuracy. In this study, the compatibility of the production statistics of six important agricultural products (wheat, rice, potato, onion, banana, apple) which had been collected from local sources, and had published as opensource by the Food and Agriculture Organization of the United Nations, with Benford's law was examined for the first time. Data for the last two decades are used to ignore the impact of annual fluctuations. The compatibility of theoretically expected and observed data was tested by Chi-square (X2) and Mean Absolute Deviation (MAD) tests. Although inconsistencies were found in some data by examining the numbers in the first, second, and first two digits, in general, the MAD test results gave a mostly concordant result.

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