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Comparison of the glucose-lowering properties of vanadyl sulfate and bis(maltolato)oxovanadium(IV) following acute and chronic administration.
Yuen VG, Orvig C, McNeill JH.
Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, Canada.
Abstract
Numerous studies, both in vitro and in vivo, have demonstrated the insulin-mimetic properties of vanadium. Chronic oral administration of inorganic and organic compounds of both vanadium(IV) and vanadium(V) reduced plasma glucose levels and restored plasma lipid levels in streptozotocin-diabetic rats. We investigated the acute effects of both vanadyl sulfate and bis(maltolato)oxovanadium(IV) (BMOV), an organic vanadium compound, on plasma glucose levels by several routes of administration. Previous studies have shown that chronic administration of vanadyl sulfate has resulted in a sustained euglycemia following withdrawal of the drug. This effect was not observed following the chronic administration of BMOV; therefore, we investigated the effect of increasing the concentration of BMOV on the production of a sustained euglycemic response. An acute plasma glucose lowering effect was obtained with both vanadyl sulfate and BMOV when administered as a single dose by either oral gavage or intraperitoneal injection. In those animals that responded to vanadium treatment, plasma glucose levels were within the normal range within 2 to 6 h when given by i.p. injection or within 4 to 8 h when given by oral gavage. BMOV-treated rats that responded to treatment maintained the euglycemic effect for extended periods, ranging from 1 to 14 weeks following administration. However, vanadyl sulfate treated rats reverted to hyperglycemia within 12 to 24 h, depending on the route of administration. Intravenous administration of BMOV was effective in lowering plasma glucose levels only when administered by continuous infusion. An oral dose-response curve showed that BMOV was 2 to 3 times as potent as vanadyl sulfate. This difference in potency was observed with both oral and intraperitoneal administration, which suggests that the increase in potency with BMOV cannot be totally attributed to increased gastrointestinal absorption. Organic chelation of vanadium may facilitate uptake into vanadium-sensitive tissues. Chronic oral administration of higher concentrations of BMOV did not result in a sustained reduction in plasma glucose following withdrawal of the drug. All diabetic rats eventually responded to increased concentrations of BMOV with a restoration of plasma glucose levels to normal values; however, reversion to the hyperglycemic state occurred within 2 days of withdrawal of treatment. Chronic oral administration of BMOV did not produce a sustained euglycemic effect following withdrawal, but acute administration of the compound by either oral gavage or intraperitoneal injection did produce a long-term reduction in plasma glucose levels. Rats treated chronically with vanadyl sulfate remained euglycemic even after the drug was withdrawn. However, acute treatment produced only a transient euglycemia.
What you are doing with the orgovanadium is increasing bioavailability in vanadium sensitive tissues, as well as increasing potency, 20mg BMOV is ~50mg VS. VS is poorly absorbed however effective even while sustaining greater insulin sensitivity 2 weeks after cessation, the same was not shown for BMOV.
Thats why VS was chosen over BMOV. People cycle off supplements, and want partioning effects to remain.
Insulin sensitivity from VS is for up to 2 weeks post cessation, and Garcinia is up to 22 days until weight regain showed in a few studies.
Here's my dirty little secret... I am currently using VS. Ha, I am as mentioned in my initial post here, I am a true fanatic and slave for all things research and how it can be applied to this unique and often confusing ambition of muscle attainment we all engage in. During my time here on Anabolic Minds over the last week, some of the original concerns I had about VS supplementation began to be brought back to light. If I was forced to make a personal judgment call right now at this very moment, I would say VS does have some very interesting and useful intrinsic values, but when I run out of the current bottles I have been using, I will not be buying any more until I can seek out and find a more definitive study that focuses on trained males and is peer reviewed and free from reproach (meaning the CEO of Optimum didn't pay for it).
I really appreciate your input, and I am in no way laying my foot down and trying to claim any of these products ineffective by any stretch of the imagination. I am not a believer in absolutes, meaning I rarely identify an issue or facet of life, athletics, theory, science etc that is 100% unchanging and immovable for all time; plus, I have only ever tried Glycobol, at least out of the current circle of GDAs that is.
Best of luck with your product... I have utmost respect for someone who goes out on a very shaky limb and begins an enterprise in these times and is bold enough to work for themselves. I am only one out of millions of potential customers, and from my point of view if I am not already sold on an item's totality of ingredients taking dosage into account, I can no longer justify buying bottles of that product in order to experiment on myself in a vain and over zealous effort to earn another ounce of muscle in the process (this was my entire MO when I was younger).