Therapeutic compositions and uses thereof
This invention provides pharmaceutical compositions, including anti-gastrointestinal cancer compositions, containing propolis and cyclodextrin. Methods of using such compositions, in particular in the treatment or prevention of gastrointestinal cancers, and the resensitization of gastrointestinal cancers to therapy are also provided.
1. A method of treating gastric cancer in a subject, the method comprising administration of an effective amount of a composition comprising propolis and cyclodextrin, to a subject in need thereof, wherein
(a) the propolis is a propolis extract or fraction,
(b) the composition comprises a CAPE concentration of from about 1 to about 5 mg/g and a pinocembrin concentration of greater than about 10 mg/g,
(c) the propolis extract or fraction is entirely encapsulated within the cyclodextrin, and
(d) the cyclodextrin is gamma-cyclodextrin or chemically modified gamma-cyclodextrin.
2. The method according to claim 1 , wherein the composition consists of propolis and cyclodextrin and wherein the propolis is a propolis extract or fraction comprising the CAPE and pinocembrin.
3. The method of claim 1 , wherein the composition comprises from about 10% wt to about 70% wt propolis.
4. The method of claim 1 wherein the composition comprises from about 10% wt to about 30% wt propolis.
5. The method of claim 1 wherein the propolis is or comprises propolis resin.
6. The method of claim 5 , wherein the composition comprises from about 10% wt to about 70% wt propolis resin or a mixture of propolis resin and propolis or an extract or fraction thereof.
7. The method of claim 6 wherein the composition comprises from about 10% wt to about 30% wt propolis resin or a mixture of propolis resin and propolis or an extract or fraction thereof.
8. The method of claim 1 , wherein the molar ratio of propolis to cyclodextrin in the composition is no greater than about 1:1.
9. The method as claimed in claim 1 , wherein the propolis has
(a) a galangin concentration of greater than about 5 mg/g, or
(b) a chrysin concentration of greater than about 3.5 mg/g, or
(c) combinations thereof.
10. The method as claimed in claim 1 , wherein the composition has
(a) a galangin concentration of greater than about 1 mg/g, or
(b) a chrysin concentration of greater than about 1 mg/g, or
(c) a pinobanksin-3-acetate concentration of from about 9.1 to about 17.5 mg/g, or
(d) a caffeic acid concentration of greater than about 1 mg/g, or
(e) any combination of any two or more of (a) to (d) above.
11. The method as claimed in claim 3 , wherein the composition comprises from about 10% wt to about 50% wt propolis.
12. The method as claimed in claim 6 , wherein the composition comprises from about 10% wt to about 50% wt propolis resin or a mixture of propolis resin and propolis or an extract or fraction thereof.
13. The method as claimed in claim 1 wherein the composition is formulated for oral administration.
14. The method as claimed in claim 1 wherein the composition is formulated for topical administration.
15. The method as claimed in claim 1 wherein the composition is a food, drink, food additive, drink additive, dietary supplement, nutritional product, medical food or nutraceutical.
16. A method of ameliorating the onset or severity of symptoms of gastric cancer in a subject or maintaining symptoms of gastric cancer at a substantially static level in a subject, the method comprising administration of an effective amount of a composition comprising propolis and cyclodextrin, to a subject in need thereof, wherein
(a) the propolis is a propolis extract or fraction,
(b) the composition has a CAPE concentration of from about 1 to about 5 mg/g and a pinocembrin concentration of greater than about 10 mg/g,
(c) the propolis extract or fraction is entirely encapsulated within the cyclodextrin, and
(d) the cyclodextrin is gamma-cyclodextrin or chemically modified gamma-cyclodextrin.