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Bloemfontein, South Africa

Schmidt B.H.,Health Discovery | Dribusch U.,Health Discovery | Delport P.C.,Clinvet International Ltd | Gropp J.M.,University of Leipzig | van der Staay F.J.,University Utrecht
BMC Veterinary Research | Year: 2012

Background: Tolerability and efficacy of the intestinal phosphate binder Lantharenol ®(lanthanum carbonate octahydrate) were tested in two prospective, randomized and negative controlled laboratory studies with healthy adult cats fed commercial maintenance diets non-restricted in phosphorus. In the first study, the maximal tolerated dose was determined. Starting from a dose of 0.125 g/kg body weight mixed with the daily feed ration, the dose of Lantharenol ®was doubled every other week until signs of intolerability were observed (N = 10 cats compared to 5 untreated controls). In the second study, the effects of feed supplementation for two weeks with approximately 2, 6, and 20% of the maximal tolerated dose on phosphorus excretion patterns and balance were assessed (N = 8 cats per group).Results: Lantharenol ®was found to be safe and well tolerated up to the dose of 1 g/kg bodyweight, corresponding to a concentration of 84 g Lantharenol ®/kg complete feed, defined as dry matter with a standard moisture content of 12%. Feed supplementation for two weeks with approximately 2-20% of this dosage (i.e., 1.6, 4.8, and 16 g/kg complete feed) resulted in a shift from urinary to faecal phosphorus excretion. Apparent phosphorus digestibility was dose-dependently reduced compared to the control group fed with diet only (N = 8).Conclusions: The feed additive was well accepted and tolerated by all cats. Therefore, Lantharenol ®presents a well tolerated and efficacious option to individually tailor restriction of dietary phosphorus as indicated, for instance, in feline chronic kidney disease. © 2012 Schmidt et al; licensee BioMed Central Ltd.

King J.N.,Novartis | Delport P.C.,Clinvet International Ltd | Luus H.G.,Clinvet International Ltd | Erasmus H.L.,Clinvet International Ltd | And 2 more authors.
Journal of Veterinary Pharmacology and Therapeutics | Year: 2015

The efficacy and acceptability of the new oral phosphate binder Lenziaren® (SBR759) were evaluated in healthy cats fed with a commercial diet containing low amounts of phosphate ('renal diet'). Lenziaren® at 0.125, 0.25, 0.5 and 1 g/day was compared to a reference product Lantharenol® (3.0 g/day) and a placebo in a masked, randomized, parallel-group design study in 36 cats (n = 6 per group). All products were mixed with the ration which was fed once daily for 28 days. Lenziaren® produced significant dose-related reductions in serum and urine phosphate concentrations, faecal apparent phosphorus digestibility and fractional urinary phosphate excretion. Cats administered Lenziaren® consumed significantly less food than the placebo group, but this had no negative impact on body weight or acceptability assessments. When compared to the positive control, Lantharenol®, Lenziaren® was significantly more acceptable (0.125, 0.5 and 1.0 g/day doses), was associated with higher food consumption (0.125, 0.5 and 1.0 g/day doses) and had greater efficacy in reducing serum phosphate (0.5 and 1.0 g/day) and urine phosphate concentrations (1.0 g/day). In conclusion, Lenziaren® was an effective oral phosphate binder in healthy cats fed with a renal diet. Lenziaren® was well accepted and tolerated. Dosages of 0.25-1.0 g/cat per day are recommended for clinical testing. © 2014 The Authors.

Cvejic D.,KLIFOVET AG | Schneider C.,KLIFOVET AG | Fourie J.,Clinvet International Ltd | de Vos C.,Clinvet International Ltd | And 3 more authors.
Parasitology Research | Year: 2016

Two single-site, laboratory, negatively controlled, masked, randomised dose confirmation studies were performed: one in dogs, the other in cats. After a period of acclimatisation, both the dogs and cats were orally infected with Echinococcus multilocularis protoscoleces. In the dog study, 10 dogs received a single dose of Milpro® tablets at a minimum dose of 0.5 mg/kg milbemycin oxime and 5 mg/kg praziquantel 18 days post-infection and 10 dogs received no treatment. In the cat study, 10 cats received a single dose of Milpro® tablets at a minimum dose of 2 mg/kg milbemycin oxime and 5 mg/kg praziquantel 7 days post-infection, 10 cats received a single dose of the treatment 18 days post-infection and 10 cats remained untreated. In both studies, intestinal worm counts were performed 23 days post-infection at necropsy. No worms were retrieved from any of the 30 treated animals. Nine of 10 control dogs had multiple worms (geometric mean 91, arithmetic mean 304) and all 10 control cats had multiple worms (geometric mean 216, arithmetic mean 481). The difference in worm counts between all three treated groups and their controls was highly significant (ANOVA p values of log transformed data <0.0001). Efficacy of 100 % was demonstrated for the elimination of adult E. multilocularis in dogs and cats as well as for elimination of immature E. multilocularis in cats as evidenced by the effectiveness of treatment 7 days post-infection. The treatments were well accepted and tolerated, and there were no adverse drug reactions observed. © 2015, The Author(s).

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