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Bioactive polymers 66. Theophylline retardation in xanthan-based hydrogels

, : Bioactive polymers 66. Theophylline retardation in xanthan-based hydrogels. Biomaterials 12(9): 821-826

Xanthan has been reticulated with epichlorohydrin to obtain a hydrogel for use in drug retardation. The obtained gel shows swelling degrees up to 1000. Theophylline has been inserted by diffusion into this gel; concentrations around 150 mg theophylline/g dry hydrogel being obtained. Controlled release of theophylline has been established by elution in a close recirculation system. Zero-order kinetics has been obtained in the diffusion process of theophylline into the eluent, within a 14 h time interval.


PMID: 1764552

Other references

Duce, S.W., 1998: Detection limits for a large area plastic scintillator detector. Health Physics 74(6 SUPPL ): S2, June

Grigorov, I.N., 1987: Results of breeding new peach cultivars in Bulgaria. Brief descriptions are given of 20 new cultivars with ripening seasons ranging from late-June (dessert cv. Chaya derived from Redhaven X (J. Hale X Marigold)) to mid-October (processing cv. Oktomvriiska 2 of unknown origin). The trees have relativ...

Matveev, M.P.; Kliukina, S.S.; Dronova, V.I., 1983: Significance of urinary transamidinase, lactate- and malate dehydrogenases in the evaluation of renal function in children with glomerulonephritis and pyelonephritis. Urologiia i Nefrologiia: 23-26

Fogarty, N.M.; Hall, D.G., 1995: Performance of crossbred progeny of Trangie Fertility Merino and Booroola Merino rams and Poll Dorset ewes: 3. Reproduction, liveweight and wool production of adult ewes. Reproduction, liveweight and wool production are reported for 4 cohorts of 377 Trangie Fertility times Dorset (TD) and 261 Booroola times Dorset (BD) ewes over 6 years. The BD ewes were 3-4 kg lighter (P lt 0.001) and had a higher ovulation rate p...

Neog, B.N.; Das, B.K.; Sarmah, S.; Chakravarty, P.; Baruah, K.K., 2003: Influence of various levels of energy and enzyme on certain blood constituents of crossbred pigs. Twenty-four Hampshire x Assam local pigs at 5-7 months of age were divided into 4 groups according to nutritional treatments of 2 energy (100 and 85% of NRC) and 2 enzyme (0 and 65 g/quintal) levels in a 2 x 2 factorial design: high energy without...

Tam, P.E.; Weber-Sanders, M.L.; Messner, R.P., 2003: Multiple viral determinants mediate myopathogenicity in coxsackievirus B1-induced chronic inflammatory myopathy. Mice infected with myopathic coxsackievirus B1 Tucson (CVB1(T)) develop chronic inflammatory myopathy (CIM) consisting of hind limb weakness and inflammation. Amyopathic virus variants are infectious but attenuated for CIM. In this report, viral c...

Yazwinski, T.A., 1989: Future methods of helminth control for Arkansas Cattle. A brief account of various anthelmintic trials performed on cattle at the Department of Animal and Poultry Sciences, University of Arkansas, USA, is given. Febantel, oxfendazole, ivermectin and morantel were the drugs tested. The paper also includ...

Boswijk, D.G., 1948: Frequentie-bepalingen bij Atropa Belladonna L. Pharmaceutisch Weekblad 83(39-40): 609-613

Vanatta J.C., 1978: Evidence against ammonia trapping as an explanation for ammonia excretion in the toad bladder. Physiologist: 79

Duan-Liansheng; Xie-Fen, 2008: Voltammetric behavior and analytical application of dopamine at carbon nanotube powder microelectrodes. The carbon nanotube powder microelectrodes has been prepared and the electrochemical behaviors of microelectrodes have been investigated. The results show that in a medium of 0.5 mol/L H2SO4 solution, the powder microelectrodes was utilized for d...