philoxeroides seedlings in response to Cr exposure are also shown in ( Fig. 9). Since the soluble protein content in the leaf tissues were slightly higher in Cr treated plants than in control plants in the 12 day of the experiment; it is likely that Cr induced stress over the course of the treatment and that antioxidative enzymes activities were consequently same. It is reported that heavy metal stress
has been shown to induce a variety of proteins resulting in an overall increase in protein content. 19 However the additional experiment buy PFI-2 is necessary to confirm the tolerance of these plants to heavy metal stress. The results of the present study indicated that A. philoxeroides accumulates high amounts of Cr in roots than shoots. A. philoxeroides is a fast growing plant and has the ability to tolerate high Cr (150 mg/l Cr) concentrations. Thus it can be used for phytoremediation. All authors have none to declare. “
“Mycophenolate mofetil (MMF) is an immunosuppressant and prodrug of mycophenolic acid, used extensively in transplant medicine. It is a reversible inhibitor of inosine monophosphate dehydrogenase1 in purine biosynthesis, more specifically guanine synthesis. MMF is also
used in the treatment of autoimmune diseases, such as Behcet’s see more disease, pemphigus vulgaris and systemic lupus erythematosus. The chemical name for MMF is 2-morpholinoethyl (E)-6-(1,3-dihydro-4-hydroxy-6-methoxy-7-methyl-3-oxo-5-isobenzofuranyl)-4-methyl-4-hexenoate. The empirical formula and molecular weight of the drug are C23H31NO7 and 433.50 g respectively. The chemical structure of MMF is presented in Fig. 1. An extensive literature surrey is carried out and found a few HPLC2, 3, 4, 5, 6 and 7 methods have been reported for the determination of MMF present in biological fluids or biological matrixes. Very few reverse phase-HPLC
methods8 and 9 are reported for the determination of the drug in dosage forms. But no LC/MS method is reported to determine the quantity of MMF in pharmaceutical formulations; Histone demethylase therefore the authors are interested in developing a new LC/MS method for the assay of MMF in pharmaceutical formulations. The scope of the present investigation is to apply this method to determine the amount of MMF and to study the stability of MMF under forced degradation. This manuscript gives the first report for the application of proposed LC/MS method in stability testing and assay of pharmaceutical dosage forms with less-time consuming analysis. HPLC grade methanol (sd Fine-Chem Limited, Mumbai, India), acetonitrile (Qualigens Fine Chemicals, Mumbai, India) and ammonium acetate (Qualigens Fine Chemicals, Mumbai, India); AR grade glacial acetic acid (Loba Chemie Pvt. Ltd., Mumbai, India), hydrochloric acid, sodium hydroxide, methanol and hydrogen peroxide (Qualigens Fine Chemicals, Mumbai, India) and Milli-Q water (RANKEM Laboratories, Mumbai, India) were used for the present investigation.