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1.
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.

2.
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.

3.
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.

4.
Genetics & Applications ; 6(2):31-40, 2022.
Article in English | CAB Abstracts | ID: covidwho-2293636

ABSTRACT

Essential role in replication and transcription of coronavirus makes the main protease of SARS-CoV-2 a great traget for drug design. The aim of this study was to predict structural interactions of compounds isolated from the Bosnian-Herzegovinian endemic plant Knautia sarajevensis (G. Beck) Szabo against the 3CLpro of SARS-CoV-2 virus. The three-dimensional crystal structure of SARS-CoV-2 main protease was retrieved from the RCSB Protein Data Bank and the three-dimensional structures of isolated compounds were obtained from the PubChem database. Active site was predicted using PrankWeb, while the preparation of protease and compounds was performed using AutoDock Tools and OpenBabel. Molecular docking was carried out using AutoDock Vina. Structural interactions are visualised and analyzed using PyMOL, LigPlus and UCSF Chimera. Apigenin, kaempferol, myricetin and quercetin showed the highest binding affinity for SARS-CoV-2 main protease and formed significant hydrogen bonds with the given protein. Results obtained in this study are in accordance with previous studies and showed that these compounds could potentially have antiviral effects against SARS-CoV-2. These findings indicate that K. sarajevensis could be potentially utilized as an adjuvant in the treatment of coronavirus disease 2019, but further pharmacological studies are required in order to prove the potential medicinal use of the plant.

5.
Iraqi Journal of Agricultural Sciences ; 53(6):1280-1288, 2022.
Article in English | CAB Abstracts | ID: covidwho-2273386

ABSTRACT

The purpose of this experiment was to increase poultry meat production by increasing the number of chickens reared in the same area and managing it by using medicinal herbs Salvia officinalis L and Lavandula angustifolia L. in the broiler chicken diet. 705 one-day-old chicks were randomly distributed into to7 treatments with three replicates for an area of two m2 floor system in each replicate for each treatment, during 35 days of the study. T0 negative control 75 chicks, 25 chicks for each replicate 12-13 chicks per m2 fed standard diet. T1 positive control (stocking density without supplementation)105 chicks, 35 each replicate chicks 17-18 per m2 fed standard diet. The same stocking density for T2, T3, T4, T5, and T6 have been given standard feed with supplemented herbals, salvia 0.7%, 0.9%, lavender0.7%, 0.9%, and mixed 0.7% respectively. Depending on the results, chickens reared in stress stocking density with supplementations led to higher improvement of body weight, meat production, body weight gain (BWG), feed conversion ratio(FCR g feed/g weight), production index PI, carcass weight (g) and dressing percentage, RBCs 106cells/mm3, lymphocyte%, of increasing activity of thyroid hormones T3, T4 (nmol/L) boost antibody titers of ND and IBV when compared with positive control. However, heterophil%, stress indicator H/L ratio, glucose mg/ dL and cholesterol mg/ dL significantly reduced. The results showed that adding sage and lavender plants to broiler feed is effective in improving productivity, immunity, and resistance characteristics in reducing the adverse effects of stress caused by increasing the intensity of broiler rearing in the same area.

6.
Acta Veterinaria et Zootechnica Sinica ; 53(11):4097-4109, 2022.
Article in Chinese | CAB Abstracts | ID: covidwho-2269287

ABSTRACT

This study aimed to explore the protective mechanism of baicalein against porcine deltacoronavirus (PDCoV) infection. The targets of baicalein were obtained through Pharmamapper, Pubchem, STITCH, TCMSP and Swiss Targer Prediction databases, and the targets of PDCoV infection were obtained according to the proteomics data from our previous study. The targets of baicalein-PDCoV interaction were obtained and analyzed by STRING database and Cytoscape 3.8.2 software to construct a network diagram of "baicalein-PDCoV-targets". The CytoNCA was used to analyze network topology and core network construction. Metascape database was used for GO and KEGG analysis of core network genes. The expression levels of genes in the predicted signaling pathways were detected in vitro. A total of 268 potential targets of baicalein were screened out. There were 75 potential targets of baicalein-PDCoV infection. GO enrichment results showed that baicalein was mainly involved in the formations of membrane raft, spindle and mitochondrial membrane, cell cycle and MAPK signaling pathways. A total of 277 signaling pathways (P < 0.01) were screened out by KEGG enrichment. The PI3K-Akt, Ras and MAPK signaling pathways were the main pathways that involved in the protective effects of baicalein against PDCoV infection. The results showed that compared with the cellular control groups, the mRNA expressions of PI3K, AKT and NF-B significantly increased in the PDCoV infection group. Compared with the PDCoV group, treatment of baicalein significantly decreased the mRNA expressions of PI3K, AKT and NF-B (P < 0.05). The effect of baicalein on PDCoV infection has the characteristics of multi-targets and multi-pathways, through the intervention of AKT1, HSP90AA1, SRC, EGFR, CASP3, MAPK, STAT3 and other core genes in regulating PI3K-Akt signaling pathway, Ras signaling pathway and MAPK signaling pathway, apoptosis, and virus infection. These results suggested that baicalein could be a potential therapeutic drug against PDCoV infection for further study.

7.
Northwest Pharmaceutical Journal ; 37(6):81-88, 2022.
Article in Chinese | CAB Abstracts | ID: covidwho-2268995

ABSTRACT

Objective: To study the mechanism of Runfei Ningshen Decoction in the treatment of insomnia caused by corona virus disease 2019(COVID-19) by using network pharmacology and molecular docking analysis. Methods: The chemical components and targets of Chinese medicinal materials of Runfei Ningshen Decoction in TCMSP, Batman, and CTD databases were searched. The relevant targets of novel coronavirus pneumonia and insomnia in Disgenet, GeneCards, CTD, and Malacards databases were searched. The component-target-disease network was established by using Cytoscape 3.2.1 software;The protein-protein intereation(PPI) network was constructed in string database. The common targets were enriched by using Cluster Profiler software package in R language software platform. The molecular docking of core targets related to insomnia caused by COVID-19 was carried out by using Discovery Studio 4.0 software. Results: 349 medicinal ingredients in Runfei Ningshen Decoction, 1 904 targets, 1 505 new coronavirus pneumonia-related targets, and 1 337 insomnia-related targets were collected. When the intersection of Venn diagrams were used, 404 common targets were obtained for the 2 diseases. 250 targets were intersected with the 2 diseases, and 33 core targets were screened out by the analysis of the interaction network between targets. Pathway enrichment analysis showed that Runfei Ningshen Decoction mainly acts on AKT1, INS, TP53, IL-6, key targets such as AKT1, INS, TP53, IL-6, JUN, CASP3, TNF, CAT, PTGS2 and CXCL8, which are involved in the important pathway processes such as human cytomegalovirus infection, fluid shear stress, and AGE-RAGE signaling pathways in complications of atherosclerosis and diabetes. The results of molecular docking showed that the core target has a high affinity with beta-sitosterol, 1-methoxy phaseolin, 3'-hydroxy-4'-O-methylglycyrrhizin, and anhydroicariin. The prescription treatment of insomnia caused by COVID-19 may be through the targets such as PTGS2, AR, PPARG, NOS2, HSP90 AA1 and so on. Conclusion: Runfei Ningshen Decoction can treat insomnia caused by COVID-19 by inhibiting IL-6 and TNF-a.

8.
Journal of Bioresources and Bioproducts ; 6(4):279-291, 2021.
Article in English | CAB Abstracts | ID: covidwho-2253861

ABSTRACT

Unique plants and their properties, once considered synonymous to medicine, remain a potent source for new compounds in modern science. Plant polyphenols and natural products continue to be investigated for effective treatments for the most persistent of human ailments. In this review, fifty novel plant phenolic compounds have been compiled and briefly described from the previous five years. Select compounds and notable plant species from genus Morinda and Sophora are further expanded on. Traditional medicine plants often contain rich and diverse mixtures of flavonoids, from which rare compounds should receive attention. The bioactivity of crude plant extracts, purified compounds and mixtures can differ greatly, requiring that these interactions and mechanisms of action be investigated in greater detail. Novel applications of uncommon natural products, namely mimosine and juglone, are explored within this review. The 2019 coronavirus pandemic has resulted in abrupt spike of related scientific publications: speculation is made regarding plant natural products and future of antiviral drug discovery.

9.
Indian Journal of Biochemistry & Biophysics ; 59(6):653-666, 2022.
Article in English | CAB Abstracts | ID: covidwho-2250046

ABSTRACT

This study aims to analyze the AntiCovid effect of Phytocompounds extracted from Native Indian Plant species by computational methods such as Molecular Docking. Through this study keeping the Indian Heritage alive we characterized the ability of these phytochemicals as inhibiting agents of the Main Protease enzyme of this Virus. The lack of any effective treatment and the reoccurrence of cases despite Vaccination necessitates the quick provision of anti-SARS-CoV-2 drugs. Natural substances are getting a lot of attention for SARS-CoV-2 therapy as they have proven antimicrobial activities and are a key source for numerous antiviral drugs. Despite the fact that this virus has several identified target receptors, Main Protease (Mpro) is crucial for viral replication. In this study, 26 phytochemicals from 10 native Indian plant species were studied. Our docking studies demonstrated that compounds Quercetin, Withaferin A, Sominone, and Nimbin were likely to be more favorable than the natural inhibitor N3, with binding energies of-8.42, -9.21, -9.95, and -8.88 kcal/mol, respectively. These four candidate natural compounds were further examined for their bioavailability scores through ADMET analysis to prove the safety of these compounds as well as their drug likeliness. Through the results it was indicated that these natural phytochemicals have a significant potential of inhibiting the SARS-CoV-2 Mpro enzyme and might be utilized to treat SARS-CoV-2 and manage public health, subject to in vitro validation in the future.

10.
Biosciences, Biotechnology Research Asia ; 19(3):657-670, 2022.
Article in English | CAB Abstracts | ID: covidwho-2285407

ABSTRACT

This study presents the anti-COVID potential of bioactive compounds from Chrysopogon zizanioides thorough in-silico molecular docking approach using AutoDock Vina software. As of our knowledge, the antiviral potential of all its bioactive compounds and their synergistic potentials against SARS-CoV-2 main-protease is not reported earlier. The results were promising with beta-Sitosterol (G = -7.5 kcal/mol;Ki = 3.13 micro M);Campesterol (G = -7.4 kcal/mol;Ki = 3.71 micro M);Stigmast-4-en-3-one (G = -7.3 kcal/mol;Ki = 4.39 micro M) forming non-covalent interactions with the amino acids in the active site of Mpro causing inhibition. The synergistic potential of compounds showed a significant sign of inhibition against Mpro with -7.9 kcal/mol with the sequential combination of beta-Sitosterol;Campesterol;Stigmast-4-en-3-one. The docking protocol validation was performed by re-docking and superimposing co-crystallized ligand, and interactions visualized using Discovery Studio 2020. Moreover, all the compounds satisfied Lipinski's oral drug-likeliness properties to be used and oral drug. These bioactive compounds of Chrysopogon zizanioides showed low binding energies against SARS-CoV-2 Mpro which proved their anti-COVID potential. Thus, by incorporating Chrysopogon zizanioides for consumption in daily life, it is very likely that one can get rid of COVID-19.

11.
Pakistan Journal of Botany ; 55(2):649-655, 2023.
Article in English | CAB Abstracts | ID: covidwho-2263379

ABSTRACT

Apricot kernels are one of the most regularly used traditional Chinese medicinal ingredients in Asia. The medical significance of apricot kernels is highlighted since Traditional Chinese Medicine (TCM) demonstrated its favourable impact when apricot kernels were used in the prevention and treatment of Corona Virus Disease 2019 (COVID-19). Furthermore, apricot kernels are high in fat, protein, dietary fibre, and specific amygdalin, making them a new form of dried fruit in comparison to almond kernels, with a bigger market opportunity. This paper systematically reviewed the active components of apricot kernels and their application in medicine, especially for molecular mechanisms of anti-tumors of amygdalin, providing scientific theoretical foundations for modern medicine treatment with COVID-19-induced lung disease, and for the development of high value-added apricot kernels.

12.
Arquivos de Ciencias da Saude da UNIPAR ; 26(3):1091-1098, 2022.
Article in Portuguese | CAB Abstracts | ID: covidwho-2205384

ABSTRACT

Eugenia pyriformis Cambess (Myrtaceae), popularly known as uvaia. In its fruits, phenolic compounds with antioxidant action are found and in the leaves, high levels of flavonoids and hydrolyzed tannins were detected, which proved to be an inhibitor of the 2019 protease - nCoV and SARS-CoV. In this sense, the objective of this study was to obtain the crude extract of the leaves, the analysis of the chemical composition and the possibility of antiviral action against SARS COV-2. The crude extract (EB) was obtained from the dried leaves of E. pyriformis, by the dynamic maceration technique with solvent exhaustion (ethanol 90 degrees GL) and concentrated in a rotary evaporator. Six grams of EB were fractionated in column chromatography, and eluted with hexane, dichloromethane, ethyl acetate and methanol, the fractions were concentrated on a rotary evaporator (Tecnal TE-210). EB and fractions were identified by high performance liquid chromatography using high resolution mass spectrometry (HPLC-ESI/qTOF). The chemical identification of the crude extract and fractions of E. pyriformis leaves evidenced the presence of phenolic compounds, highlighting phenolic acids, flavonoids and tannins. In addition, a bibliographic survey was carried out on the probable antiviral action of phenolic compounds and tannins present in uvaia leaves. The results showed that the flavonoids quercetin and kaempferol have antiviral action when they bind to the envelope glycoprotein or viral capsid, interfering with the binding and penetration of the virus into the cell. This result places E. pyriformis leaves in the list of plants with antiviral action.

13.
Drug Evaluation Research ; 45(11):2188-2199, 2022.
Article in Chinese | CAB Abstracts | ID: covidwho-2203152

ABSTRACT

Objective: To analyze the molecular biological mechanism of Houttuynia cordata in treatment of viral pneumonia based on network pharmacology, and to evaluate its feasibility in prevention and treatment of Corona Virus Disease 2019 (COVID-19).

14.
Journal of the Cameroon Academy of Sciences ; 18(2):397-406, 2022.
Article in Spanish | CAB Abstracts | ID: covidwho-2163954

ABSTRACT

Many decoctions from traditional pharmacopoeia are used to treat Covid-19 contain zingiber officinale rhizomes (gingembre). One of its mechanism of action would come from its antioxidant proprerty due to the presence of phenolic compounds .We therefore determined the contents of polyphenols, flavonoids and antioxidant activities on water, alcoholic and hydroalcoholic extracts of gingembre harvested from Bangangte, Bafang, Kekem, Santchou and Melong. The mean contents of polyphenols expressed in mEgAT/g ES were 155,91 +or-18,22;321,46 +or- 71,90;136,44 +or- 28,44 in aqueous,, hydro alcoholic and alcoholic extracts respectively. Those of flavonoids expressed in mEg Quer/g ES were 45,24+or- 13,49;125,43+or-14,88;76,52+or-10,80. Antioxidant activities measured according FRAB (1,34+or-0,42 ng/ ml;2,08+or-0,59 ng/ml;1,64+or-0,49.) and PAP (1,82+or-0,51 ng/mL;2,46+or-0,52 ng/mL;2,06+or-0,50 ng/ mL) methods vary according to the type of extract . Polyphenol, flavonoids contents and antioxidant activities from Melong were higher than those of the other sites.

15.
Journal of Hainan Medical University ; 27(19):1441-1450, 2021.
Article in Chinese | CAB Abstracts | ID: covidwho-2145380

ABSTRACT

Objective: To explore the effect of Sini Decoction plus Ginseng on COVID-19 based on network pharmacological analysis.

16.
Zeitschrift fur Arznei & Gewurzpflanzen ; 26(2):60-66, 2021.
Article in German | CAB Abstracts | ID: covidwho-2125255

ABSTRACT

This article provides information on the chemical components and antiviral characteristics of some medicinal plants against various Coronavirus strains. Some of these plants include sage (Salvia officinalis), Cistus incanus, Rumex acetosa and Plantago sp., among others.

17.
Journal of Xinyang Normal University Natural Science Edition ; 33(2):210-219, 2020.
Article in Chinese | CAB Abstracts | ID: covidwho-2055548

ABSTRACT

ADMEN prediction was used to perform the first round screening from Traditional Chinese Medicine Database and Analysis Platform(TCMSP). then VASARA and molecular docking were used to screen again based on targets spike glyoprotein and angiotensin converting enzyme 2. and finally the interaction between target and drug was analyzed. 425 candidate ingredients of traditional Chinese medicine were screened from TCMSP database. when targeted by Spike glycoprotein. 12 ingredients were screened. They were contained artemisia apiacea salvia miltiorrhiza bge. scutellaria baicalensis. pinellia ternate. liquorice. radixImplettri and other traditional Chinese medicine. With ACE2 as the target. 77 components of traditional Chinese medicine were screened out. including salvia miltiorrhiza bge scutellaria baicalensis. pinellia ternatc. Liquorice. radix bupleuri. ephedra and other traditional Chinese medicine. At last. salviolone and dihydrotanshinlactone were found to be the potential inhibitor.

18.
Journal of Henan Normal University Natural Science Edition ; 49(4):206-211, 2022.
Article in Chinese | CAB Abstracts | ID: covidwho-2040773

ABSTRACT

Severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2), the causative agent of coronavirus disease-19 (COVID-19), has become a global health issue. Spike proteins from the virus have a vital role in infection. Herbal medicines such as Lagerstroemia, Euphorbia hirta, and Kleinhovia hospita have several pharmacological functions such as anticancer, antiviral, and antioxidant because of their bioactive compound content. Based on an in silico study, this research was conducted on the possibility of phytochemicals from herbal Lagerstroemia, E. hirta, and K. hospita to inhibit spike protein SARS-CoV-2. A three-dimensional (3D) compound structure of each herbal medicine was docked with HR protein using AutoDock Vina software. The docking result, which has the best binding energy value, is continued with the analysis of molecular dynamics simulation. Lagerine, rutin, and nicotiflorin compounds might bind to proteins with lower binding energy. Protein was unstable when complexed with compounds compared with control, as seen from the root-mean-square deviation (RMSD) value. Therefore, this research is pre-experimental to inhibit SARS-CoV-2 spike proteins by herbal medicines.

19.
IOP Conference Series : Earth and Environmental Science ; 839(37), 2021.
Article in English | CAB Abstracts | ID: covidwho-1973036

ABSTRACT

The aim of this study was to determine the hematological profile and specific immunity of laying hens with the addition of oil extracts of lycopene or astaxanthin to the diet. The study used High Line W36 chickens that were vaccinated against Newcastle disease, infectious bronchitis, avian rhinotracheitis and egg drop syndrome. It was found that the addition of lycopene (20 mg/kg) and astaxanthin (10 mg/kg) for 30 days did not affect the hematological profile of laying hens. Increasing the content of lycopene to 40 and 60 mg/kg or astaxanthin to 20 or 30 mg/kg of feed for 30 days reduced the number of leukocytes and hemoglobin in the blood compared to the control, which received an equivalent amount of refined sunflower oil in the diet. Lycopene and astaxanthin supplements, regardless of dose and duration of administration, did not affect the titer of antibodies to Newcastle disease, infectious bronchitis, avian rhinotracheitis, and egg drop syndrome in serum of vaccinated laying hens. The obtained data can be used to justify the optimal dose and term of feeding of lycopene or astaxanthin supplements in the development of a model of carotenoid enrichment of chicken egg yolks.

20.
Veterinary Integrative Sciences ; 20(2):419-430, 2022.
Article in English | CAB Abstracts | ID: covidwho-1934647

ABSTRACT

During COVID-19 outbreak, alcohol-based hand sanitizer (ABHS) has been widely used for hand cleaning and removing pathogens including human pathogens and zoonosis pathogens. High concentration of alcohol induces dehydrated skin in the users. Therefore, the objective of this study was to investigate moisturizing property and antimicrobial activity of alcohol-based hand sanitizer formulations using coconut oil as a moisturizing agent against pathogens including Escherichia coli and Staphylococcus aureus. The properties including antimicrobial activity, stability of the ABHS, and satisfaction levels of the coconut oil with two existing formulations by WHO and the Ministry of Public Health of Thailand (MOPH) were determined. The formulation containing the coconut oil demonstrated antibacterial activity against both E. coli and S. aureus with the minimal inhibitory concentration (MIC) of 8.75% V/V as same as MOPH. However, the WHO-modified formulation has the highest antimicrobial activity with the MIC value of 2.19% V/V. The stability result of 3 ABHSs showed that the preserved had the same efficacy compared to that of the fresh formulations. Hand washing with coconut formulation produced an average score of 7.19+or-1.71 on color, 7.06+or-1.56 on appearance, 5.82+or-2.10 on odor, 6.77+or-1.68 on moisture, 6.88+or-1.42 on overall acceptance out of 9. However, the sensory analysis of these three formulations results showed no significant difference in all parameters. The data suggest that moisturizing agents tested in our study do not affect the efficacy of ethanol. The coconut oil formulation is another good option for people searching for an effective hand sanitizer for germs protection and moisturizing.

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