Propolis Extract Functions as Growth Promoter, Immunostimulant & Hepatoprotective agent

impressive results from propolis continue to reinforce its potent value for animals, as well as humans... 

Effect of Ethanolic Extract of Propolis on Growth Performance and Plasma Biochemical Parameters of Rainbow Trout (Oncorhynchus mykiss)
Fish Physiol Biochemistry, 2011 May 11

This study was conducted to evaluate the effect of ethanolic extract of propolis (EEP) on growth performance and plasma biochemical parameters of rainbow trout (Oncorhynchus mykiss).

Graded levels of EEP [0 (control), 1, 2, and 4 g kg(-1) diet] were fed to trout juveniles (mean weight 7.73 ± 0.17 g) for 10 weeks.

Dietary EEP supplementation regardless of inclusion level significantly improved the specific growth rate of fish. Similarly, supplemental EEP generally improved the feed efficiency ratio and protein efficiency ratio, but no significant differences were observed between the 1 g kg(-1) EEP group and the control group. In addition, dietary EEP supplementation generally increased the plasma superoxide dismutase, lysozyme, total antioxidant capacity, glutathione peroxidase, and catalase activities, but decreased the plasma malondialdehyde level. The plasma triglycerides level was significantly lower in the 1 or 4 g kg(-1) EEP group as compared with the control group.

Dietary EEP supplementation generally decreased the plasma aspartate aminotransferase and alanine aminotransferase activities, but increased the hepatic aspartate aminotransferase and alanine aminotransferase activities.

These results indicate the potential to use the EEP as a growth promoter, hepatoprotective agent, and immunostimulant for rainbow trout.

Propolis Component Inhibits Breast Cancer Tumor Growth

more promising news for the use of Propolis as an anti-tumor agent...


Caffeic Acid Phenethyl Ester (CAPE), Derived from a Honeybee Product Propolis, Exhibits a Diversity of Anti-Tumor Effects in Pre-Clinical Models of Human Breast Cancer
Cancer Letters, Article in Press

Breast cancer (BC) patients use alternative and natural remedies more than patients with other malignancies. Specifically, 63–83% use at least one type of alternative medicine and 25–63% use herbals and vitamins.

Propolis is a naturopathic honeybee product, and CAPE (caffeic acid phenethyl ester), is a major medicinal component of propolis. CAPE, in a concentration dependent fashion, inhibits MCF-7 (hormone receptor positive, HR+) and MDA-231 (a model of triple negative BC (TNBC) tumor growth, both in vitro and in vivo without much effect on normal mammary cells and strongly influences gene and protein expression.

It induces cell cycle arrest, apoptosis and reduces expression of growth and transcription factors, including NF-κB. Notably, CAPE down-regulates mdr-1 gene, considered responsible for the resistance of cancer cells to chemotherapeutic agents. Further, CAPE dose-dependently suppresses VEGF formation by MDA-231 cells and formation of capillary-like tubes by endothelial cells, implicating inhibitory effects on angiogenesis.

In conclusion, our results strongly suggest that CAPE inhibits MDA-231 and MCF-7 human breast cancer growth via its apoptotic effects, and modulation of NF-κB, the cell cycle, and angiogenesis.

Propolis Can Help Treat Oral Cavity Infections

note the use of propolis extract, the same type used by others who've experienced rapid healing after post-dental procedures...

In vitro Antimicrobial Activity of Propolis, BioPure MTAD, Sodium Hypochlorite, and Chlorhexidine on Enterococcus faecalis and Candida albicans
Saudi Med J, 2011 May;32(5):479-83

Objectives: To evaluate the antimicrobial effect by measuring the minimum inhibitory concentration MIC and minimum bactericidal concentration MBC of propolis, BioPure MTAD, 5% sodium hypochlorite (NaOCl), and 2% chlorhexidine CHX on Enterococcus faecalis (E. faecalis) and Candida albicans (C. albicans) in vitro. 

Methods: This study was performed in the Faculty of Dentistry and Pharmacy at Erciyes University, Kayseri, Turkey from February to April 2010. Ethanol extract of propolis (EEP) was prepared from propolis collected from Kayseri, Turkey, and proper media for microorganisms were prepared using sterile broth medium to give final concentrations between 0.002-2.4 mg/ml for propolis, 0.000125-0.512 mg/ml for CHX, and 1:2-1:4096 dilutions for NaOCl and BioPure MTAD. Using the macrobroth dilution method, MIC, and MBC values of irrigants on the growth of E. faecalis and C. albicans were determined. 

Results: Propolis and other irrigants were found to be effective on C. albicans and E. faecalis. Propolis and NaOCl were more effective in lower concentrations on C. albicans than on E. faecalis. In contrast, CHX and MTAD were more effective in lower concentrations on E. faecalis than on C. albicans. 

Conclusions: Propolis showed antimicrobial activity against E. faecalis and C. albicans. It appears that propolis is an effective intracanal irrigant in eradicating E. faecalis and C. albicans.

Propolis May Help Prevent Damage to Kidneys

simply put, propolis is a powerful protector, preventatively and post-operatively...

Propolis Attenuates Cobalt Induced-Nephrotoxicity in Adult Rats and Their Progeny

Experimental and Toxicologic Pathology, Article in Press

The aim of this study was to evaluate the biochemical changes in cobalt-exposed rats and to investigate the potential role of Tunisian propolis against the cobalt-induced renal damages.

Twenty-four pregnant Wistar rats were divided into four groups and were treated as follows: group 1 (control) received distilled water; group 2 received 350 ppm of CoCl2 in drinking water; group 3 received 350 ppm CoCl2 in drinking water and a propolis-supplemented diet (1 g/100 g of diet); group 4 received a propolis-supplemented diet (1 g/100 g of diet) without cobalt. In the cobalt group, a significant decrease in body, absolute and relative weights was noted when compared to controls.

The administration of cobalt to pregnant rats from the 14th day of pregnancy until day 14 after delivery resulted in an increased level of renal malondialdehyde, a decreased renal content of glutathione and antioxidant enzyme activities such as superoxide dismutase, catalase and glutathione peroxidase in lactating rats and their pups.

A statistically significant increase in plasma urea and creatinine serum levels was seen in treated female rats and their pups. Histopathologically, the cobalt-administration induced degenerative changes in the kidney of lactating rats and their pups.

When compared with cobalt-treated rats, those receiving the propolis supplementation (along with cobalt-treatment) had lower malondialdehyde levels, higher antioxidant activities and the cobalt-related histopathological changes in the kidneys were at lower severity.

Our results suggested that the propolis might be a potential candidate agent against cobalt-induced nephrotoxicity in adult and juvenile rats when administered to female rats during the late pregnancy and the early postnatal period.

Bee Venom for the Treatment of Parkinson Disease

Great news for advocates of BVT and sufferers of Parkinsons...
C'est curieux ça va passer en France... Happy Thérapie pour tous








Bee Venom for the Treatment of Parkinson's Disease (MIREILLE)
ClinicalTrials.gov



This study is ongoing, but not recruiting participants.

 
Sponsor: Assistance Publique - Hôpitaux de Paris 
Information provided by: Assistance Publique - Hôpitaux de Paris 
ClinicalTrials.gov Identifier: NCT01341431 
Official Title: Evaluation of the Symptomatic and Neuroprotective Effects of Bee Venom for the Treatment of Parkinson Disease

Purpose: The purpose of this study is to evaluate the efficacy of repeated (monthly) injections of bee venom on motor symptoms of Parkinson's disease over a period of one year, also the potential effects of this treatment on disease progression compared to placebo (saline injections)…

Royal Jelly Boosts Metabolism

Specific Hydroxy Fatty Acids in Royal Jelly Activate TRPA1
J Agric Food Chem, 2011 Feb 24

This is the first report of TRPA1 activation by fatty acids. 

Activation of TRPA1 and TRPV1 induces thermogenesis and energy expenditure enhancement. 

In this study, we searched for novel agonists of TRPA1 and TRPV1 from a nonpungent food, royal jelly (RJ). 

We measured the activation of human TRPA1 and TRPV1 by RJ extracts and found that the hexane extract contains TRPA1 agonists. The main functional compounds in the hexane extract were trans-10-hydroxy-2-decenoic acid (HDEA) and 10-hydroxydecanoic acid (HDAA). These are characteristic fatty acids of RJ. 

Their EC(50) values were about 1,000 times larger than that of AITC, and their maximal responses were equal. They activated TRPA1 more strongly than TRPV1. Their EC(50) values for TRPV1 were 2 times larger, and the maximal response was less than half of that for TRPA1. 

Next, we studied the potencies of other lipid components for both receptors. Most of them have higher affinity to TRPA1 than TRPV1. Among them, dicarboxylic acids showed equal efficacy for both receptors, but those are present in only small amounts in RJ. 

We concluded that the main function of RJ is TRPA1 activation by HDEA and HDAA, the major components of the RJ lipid fraction.

Propolis Bioflavonoid Shows Anti-Cancer Activity

Effect of Propolis and Caffeic Acid Phenethyl Ester (CAPE) on NFκB Activation by HTLV-1 Tax

Antiviral Research, Article in Press

HTLV-1 is the etiological agent of an aggressive malignancy of the CD4+ T-cells, adult T-cell leukemia (ATL) and other sever clinical disorders. The viral Tax protein is a key factor in HTLV-1 pathogenicity. A major part of Tax oncogenic potential is accounted for by its capacity of inducing the transcriptional activity of the NFκB factors, which regulate the expression of numerous cellular genes. 

Propolis (PE), a natural product produced by honeybees, has been used for long time in folk medicine. One of PE active components, caffeic acid phenylethyl ester (CAPE), was well characterized and found to be a potent inhibitor of NFκB activation. Therefore, the aim of this study was to pursue the possibility of blocking Tax oncogenic effects by treatment with these natural products. 

Human T-cell lines were used in this study since these cells are the main targets of HTLV-1 infections. We tried to determine which step of Tax-induced NFκB activation is blocked by these products. 

Our results showed that both tested products substantially inhibited activation of NFκB-dependent promoter by Tax. However, only PE could efficiently inhibit also the Tax-induced activation of SRF- and CREB- dependent promoters. 

Our results showed also that PE and CAPE strongly prevented both Tax binding to IκBα and its induced degradation by Tax. However, both products did not interfere in the nuclear transport of Tax or NFκB proteins.