1.Pharmacokinetic Profile of µSMIN Plus™, a new Micronized Diosmin Formulation, after Oral Administration in Rats.
Russo R, Mancinelli A, Ciccone M, Terruzzi F, Pisano C, Severino L. Nat Prod Commun. 2015 Sep;10(9):1569-72.
Diosmin is a naturally occurring flavonoid present in citrus fruits and other plants belonging to the Rutaceae family. It is used for the treatment of chronic venous insufficiency (CVI) for its pheblotonic and vaso-active properties, safety and tolerability as well. The aim of the current in vivo study was to investigate the pharmacokinetic profile of a branded micronized diosmin (µSMIN Plus™) compared with plain micronized diosmin in male Sprague-Dawley rats. After oral administration by gastric gavage, blood samples were collected via jugular vein catheters at regular time intervals from baseline up to 24 hours. Plasma concentrations were assessed by LC/MS. For each animal, the following pharmacokinetic parameters were calculated using a non-compartmental analysis: maximum plasma drug concentration (Cmax), time to reach Cmax (Tmax), area under the plasma concentration-time curve (AUC0-last), elimination half-life (t½), and relative oral bioavailability (%F).
2.Synthesis, Spectral Characterization, and Biochemical Evaluation of Antidiabetic Properties of a New Zinc-Diosmin Complex Studied in High Fat Diet Fed-Low Dose Streptozotocin Induced Experimental Type 2 Diabetes in Rats.
Gopalakrishnan V1, Iyyam Pillai S2, Subramanian SP1. Biochem Res Int. 2015;2015:350829. doi: 10.1155/2015/350829. Epub 2015 Dec 9.
In view of the established antidiabetic properties of zinc, the present study was aimed at evaluating the hypoglycemic properties of a new zinc-diosmin complex in high fat diet fed-low dose streptozotocin induced experimental type 2 diabetes in rats. Zinc-diosmin complex was synthesized and characterized by various spectral studies. The complexation between zinc ions and diosmin was further evidenced by pH-potentiometric titrations and Job's plot. Diabetic rats were orally treated with zinc-diosmin complex at a concentration of 20 mg/kg b.w./rat/day for 30 days. At the end of the experimental period, the rats were subjected to oral glucose tolerance test. In addition, HOMA-IR and various biochemical parameters related to glucose homeostasis were analyzed. Treatment with zinc-diosmin complex significantly improved the glucose homeostasis in diabetic rats. Treatment with zinc-diosmin complex significantly improved insulin sensitivity, at least in part, through enhancing protein metabolism and alteration in the levels of muscle and liver glycogen.
3.Role of dietary flavonoids in amelioration of sugar induced cataractogenesis.
Patil KK1, Meshram RJ1, Dhole NA2, Gacche RN3. Arch Biochem Biophys. 2016 Mar 1;593:1-11. doi: 10.1016/j.abb.2016.01.015. Epub 2016 Jan 30.
Sugar induced cataractogenesis and visual impairment is more prominent ophthalmic problem in humans suffering from diabetes. Flavonoids have been identified as one of the therapeutically important class of phytochemicals possessing myriad of biological activities. Analyzing the anti-cataract effects of flavonoids from natural sources is an important aspect owing to their bioavailability in variety of dietary sources. In the present study a panel of ten dietary flavonoids like 3, 6-dihydroxy flavone, 3, 7-dihydroxy flavone, chrysin, 3-hydroxy-7-methoxy flavone, apigenin, genistein, baicalein, galangin, Biochanin-A, and diosmin were evaluated for their anti-cataract effects in sugar induced lens model studies. Series of parameters like role of flavonoids in glycation induced lens opacity, protein aggregation measurements, carbonyl group formation: a biochemical marker of glycation reaction, non-tryptophan fluorescence: a marker of formation of advanced glycation end products (AGEs) and assessment of (experimental and in silico) aldose reductase inhibition: a key enzyme of polyol pathway involved in cataractogenesis.
4.Prevention of amphotericin B nephrotoxicity through use of phytotherapeutic medication.
Schlottfeldt FD1, Fernandes SM1, Martins DM1, Cordeiro P1, Fonseca CD1, Watanabe M1, Vattimo MF2. Rev Esc Enferm USP. 2015 Feb;49(spe):74-79.
Objective To evaluate the effect of diosmin and hesperidin flavonoids in the prevention of amphotericin B nephrotoxicity, through an experimental model on rats. Method Adult, male Wistar rats were distributed into the following groups: saline; diosmin hesperidin (animals that received 50 mg/kg of diosmin hesperidin, drinking water, for ten days); amphotericin B (animals that received 15 mg/kg/day of amphotericin B through intraperitoneal treatment for five days); amphotericin B+diosmin hesperidin. Renal function, fractional excretion of sodium; potassium and magnesium and oxidative metabolites were evaluated. Results Treatment with amphotericin B reduced renal function, as shown by the clearance of creatinine, increased tubular function markers and fractional excretion of sodium, potassium, magnesium and oxidative metabolites. Pre-treatment with diosmin hesperidin ameliorated clearance of creatinine and reduced tubular and oxidative injury.