@article {1243, title = {Antioxidant and the Efficacy of Sophora secundiflora and Methoxyisoflavones in the Immune Function of Pigeons Vaccinated against Paramyxovirus Serotype-1}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {September 2020}, pages = {1276-1288}, type = {Original Article}, chapter = {1276}, abstract = {

Objective: The present work investigated the effect of oral administration of hydroalcoholic (70\% aqueous ethanol) extract (TeE) of Sophora secundiflora leaves and its organic fractions n-hexane (HeE), ethyl acetate (EaE) and n-butanol (BuE) and major isolated methoxyisoflavones 1 and 2, on the cellular and humoral immune responses to live attenuated avian paramyxovirus-1 (APMV-1) vaccines in pigeons. Methods: The structures of six isolated compounds were elucidated on the basis of chromatographic, chemical, and spectroscopic methods. The samples antioxidative and radical scavenging capabilities of 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2{\textquoteright}-azinobis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) radical cation and ferric reducing power were determined. Total phenolic, tannin and flavonoid contents of EaE extract were evaluated. Results: Six compounds were isolated. Three were the methoxyisoflavones5- 7-dihydroxy-4'-methoxyisoflavone (1), 7-hydroxy-4'methoxyisoflavone (2), 5,4{\textquoteright}-dihydroxy-7- methoxy-isoflavone (3), along with isorhamnetin (4) and two quercetin derivatives quercetin 3-glucoside (5) and quercetin 3-rutinoside (6) were isolated. The hydroalcoholic extract, fractions and 4{\textquoteright}-methoxyisoflavones showed radical scavenging effect in the order of EaE \> TeE \> BuE \>compound 1\>compound 2\> HeE. Stimulation of both sero-responses was observed, especially this of EaE. The results showed an increase of macrophage cells, lymphocyte and antibody titers in blood. Conclusion: The presence of 5-hydroxyl group at A-ring may be important to show the immunostimulant and antioxidant activity of compound 1vs compound 2. The present results showed the potential abilities of EaE as antioxidant and immunomodulator agent and these would impart healthy economic benefits in vaccinated birds.

}, keywords = {Antiradical effect, Immune, Isoflavones, Paramyxovirus, Pigeons, Sophora secundiflora}, doi = {10.5530/pj.2020.12.176}, author = {Howaida Ibrahim Abd-Alla and Magda Tohamy Ibrahim and Hanan Anwar Aly Taie and Marwa Abas Hasan and Nagwa M M Shalaby} } @article {1055, title = {Evaluation of Immune Boosting Properties and Combating of Multiple Respiratory Viral Infections by fifteen Euphorbiaceae Plant Extracts}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {November 2019}, pages = {1490-1503}, type = {Original Article}, chapter = {1490}, abstract = {

Objective: Fifteen Euphorbiaceae plant extracts were evaluated for their antiviral and immune boosting properties. Methods: The maximum non-toxic concentration of each extract in specific pathogen{\textendash}free embryonated chicken eggs was estimated and their antiviral efficacy was determined in terms of reduction in viral titers, measured by the hemagglutination inhibition (HI) assay. The antiviral efficacy was compared with ribavirin. The active extract was further subjected to estimation of total polyphenolic and flavonoid contents. Also, GC/ MS analysis was used to analyze its unsaponifiable and saponifiable matters. Results: The cytotoxic concentration fifty (CC50) of Breynia distacha recorded the value of \>200 and \>300 for Newcastle disease virus (NDV) and avian influenza virus (AIV) H5N1, respectively. This extract showed antiviral inhibition concentration (IC50) values of <= 2 and <= 3, respectively and antiviral therapeutic index of 100\% compared with ribavirin as standard. The serum of the vaccinated chicks treated with B. distacha has recorded the highest HI titers (7.1 and 8.3 log2) at the day of 28 post vaccination with high protection percentage (100 and 90\%) post NDV and AIV H5N1 challenge, respectively. Also, a high HI titer (6.9 log2) was recorded in serum of the vaccinated chicks treated with Aleurites moluccana, Jatropha curcas, Ricinus communis, Putranjiva roxburghii with protection percentage of 95-100\% post-NDV challenge. GC/MS analysis allowed identification of 91.10\% of the total unsaponifiable matter, (1-heptatriacotanol represented the major component, 24.61\%) and 82.51\% of the fatty acid methyl esters content (methyl palmitate represented the major component, 26.13 \%). Conclusion: This study highlighted the potential of many Euphorbiaceae plants especially B. distacha, to be new candidate of plant-based prototypes that carry antiviral and immunogenic features against respiratory viral infections.

}, keywords = {Euphorbiaceae, GC/MS, Hemagglutination, Immune, Respiratory viral infections, SPF-ECEs}, doi = {10.5530/pj.2019.11.230}, author = {Howaida I Abd-Alla and Heba-tollah M Sweelam and Walaa A El-Kashak and Mounir M El-Safty} }