scholarly journals Oral administration of Korean propolis extract ameliorates DSS-induced colitis in BALB/c mice

2020 ◽  
Vol 17 (13) ◽  
pp. 1984-1991
Author(s):  
Soonjae Hwang ◽  
Samnoh Hwang ◽  
Minjeong Jo ◽  
Chang Gun Lee ◽  
Ki-Jong Rhee
Keyword(s):  
Oral Administration ◽  
Propolis Extract ◽  
Korean Propolis

scholarly journals The protective role of propolis against multi heavy metals-induced oxidative stress-hepato-renal damage in the male of albino rats

2021 ◽  
Author(s):  
Ayman Ahmed Bassiouny El-Amawy ◽  
Samir Attia Mohammed Zaahkouk ◽  
Hesham Gamal Abdel Rasheed ◽  
Bassem Elsayed Elaraby Mohammed
Keyword(s):  
Heavy Metals ◽  
Oral Administration ◽  
Antioxidant Defense System ◽  
Protective Role ◽  
Albino Rats ◽  
Protective Effects ◽  
Toxic Heavy Metals ◽  
Propolis Extract ◽  
Liver And Kidney

Abstract The study was designed to clarify the hepato-renal protective effects of propolis extract against heavy metals-induced toxicity via oral administration to the males of albino rats. Lead (Pb), Nickel (Ni), Cadmium (Cd), and Antimony (Sb) are toxic heavy metals have the ability to produce reactive radicals in the biological systems causing public and animals health hazards through disrupting balances between pro-oxidant and antioxidant defense system, resulting in excessive reactive oxygen species (ROS) production. The most commonly affected organs are liver and kidney. Propolis is a natural product with different shapes and resinous substance collected by honey bees, it attenuates many diseases damage due to its anti-oxidative action and its potentiality to minimize the deleterious effects of free radicals on tissues. The concentrations of Pb, Cd, Ni and Sb as well as the activities of antioxidants endogenous enzymes including; glutathione peroxidase (Gpx), glutathione reductase (GR), catalase (CAT), and superoxide dismutase (SOD) were all determined in the tissues of liver and kidney; while aspartate transaminase (ASAT), alanine transaminase (ALAT), total protein (TP), urea and createnine, were measured in the serum of experimental rats beside histopathologicl examination in the tissues of liver and kidney. The oral administration of propolis provided a significantly therapeutic role against multi-metals-induced hepato-renal toxicity with relative improving to histopathological changes because of its scavenging and chelating properties as concluded from the present investigation.

scholarly journals Bioavailability and In Vivo Antioxidant Activity of a Standardized Polyphenol Mixture Extracted from Brown Propolis

2019 ◽  
Vol 20 (5) ◽  
pp. 1250 ◽  
Author(s):  
Valeria Curti ◽  
Vincenzo Zaccaria ◽  
Arold Tsetegho Sokeng ◽  
Marco Dacrema ◽  
Irene Masiello ◽  
...  
Keyword(s):  
Oral Administration ◽  
Antimicrobial Activities ◽  
Prolonged Treatment ◽  
Acute Administration ◽  
Acute Setting ◽  
Propolis Extract ◽  
Rapid Absorption ◽  
End Of Treatment ◽  
Glucuronide Metabolite

Several lines of evidence demonstrate the antioxidant, anti-inflammatory and antimicrobial activities of propolis, mostly ascribed to its polyphenol content. However, little is known regarding the bioavailability of propolis in acute and prolonged settings of oral administration. In this study, we first determined the content of the main polyphenols in a brown propolis extract obtained using a patented extraction method (Multi Dinamic Extraction—M.E.D.) by RP-HPLC-UV-PDA-MSn analysis, followed by the bioavailability of galangin and chrysin, the most abundant polyphenols in the mixture (7.8% and 7.5% respectively), following acute (single bolus of 500 mg/kg containing about 3.65 mg of the polyphenol mixture) and prolonged (100, 250 and 500 mg/kg body for 30 days) oral administration in 30 male 8 weeks old C57BL/6 wild-type mice. In the acute setting, blood was taken at 30 s and 5, 10, 15, 20, 25, 30, 45, 60 and 120 min following the oral bolus. In the prolonged setting, blood samples were obtained after 10, 20 or 30 days of administration. At the end of treatment, expression of antioxidant enzymes (superoxyde dismutase, SOD-1; catalase, CAT; glutathione peroxidase, GSS) was evaluated in liver tissue. Following both acute and prolonged administration, neither galangin nor chrysin were detectable in the plasma of mice, whereas the glucuronide metabolite of galangine was detectable 5 min after acute administration. At the end of the prolonged treatment SOD-1 was found to have increased significantly, unlike CAT and GSS. Overall, these data suggest that oral administration of whole brown propolis extract is followed by rapid absorption and metabolization of galangin followed by adaptations of the antioxidant first line defense system.

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