Preparation of coated pellets intended for rutin colon delivery, their evaluation in vitro and in vivo in experimental colitis in rats was the purpose of this study. Pellets were obtained using extrusion/spheronization and coated with three types of coatings (caffeic acid/hypromellose/alginic acid; sodium alginate/hypromellose/zinc acetate; sodium alginate/chitosan). Dissolution using buffers of pH values, β-glucosidase and times corresponding to gastrointestinal tract (GIT) was provided. Pellets coated with alginate/chitosan showed low rutin dissolution (12-14%) in upper GIT conditions and fast release (87-89%) under colon conditions; that is a good presumption of intended rutin release. After colitis induction and development, the rats were treated with pellets and rutin solution administered orally, solution also rectally. Colon/body weight ratio, myeloperoxidase activity and histological evaluation were performed. Rutin was able to promote colonic healing at the dose of 10mg/kg: colon/body weight ratio decreased and myeloperoxidase activity was significantly suppressed. Pellets coated with alginate/chitosan applied orally and rutin solution administered rectally showed the best efficacy. The combination of rutin as natural product, mucoadhesive chitosan degraded in the colon and sodium alginate as the main coating substance in the form of pellets create a promising preparation for therapy of this severe illness.
- MeSH
- algináty chemie MeSH
- antiflogistika aplikace a dávkování chemie farmakologie MeSH
- aplikace orální MeSH
- časové faktory MeSH
- chemie farmaceutická MeSH
- chitosan chemie MeSH
- farmaceutická technologie metody MeSH
- gastrointestinální látky aplikace a dávkování chemie farmakologie MeSH
- kolitida chemicky indukované farmakoterapie patologie MeSH
- kolon účinky léků patologie MeSH
- koncentrace vodíkových iontů MeSH
- krysa rodu rattus MeSH
- kyselina glukuronová chemie MeSH
- kyselina trinitrobenzensulfonová MeSH
- kyseliny hexuronové chemie MeSH
- kyseliny kávové chemie MeSH
- léky implantované MeSH
- methylcelulosa analogy a deriváty chemie MeSH
- modely nemocí na zvířatech MeSH
- octan zinečnatý chemie MeSH
- potkani Wistar MeSH
- příprava léků MeSH
- pufry MeSH
- rozpustnost MeSH
- rutin aplikace a dávkování chemie farmakologie MeSH
- stabilita léku MeSH
- zvířata MeSH
- Check Tag
- krysa rodu rattus MeSH
- mužské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
BACKGROUND AND AIMS: Wilson disease (WD) is an inherited disorder of copper metabolism. When treated, the outcome can be excellent, although the long-term survival has yet to be well documented. The aim of this study was to describe the long-term outcome of a cohort of patients with WD and to assess those factors affecting the phenotypic manifestation of WD. METHODS: The presence of mutations to the ATP7B gene, the clinical manifestations, treatments and the long-term outcomes were analysed retrospectively in 117 patients with WD (59 men and 58 women, aged at evaluation 38.5 ± 11, range 16-63 years). RESULTS: Fifty-five patients with a neurological presentation, 51 patients with a hepatic presentation and 11 asymptomatic patients were followed up for an average of 15.1 ± 10 years (median 12 years, range 1-41 years). The H1069Q ATP7B gene mutation was the most frequent genetic variant (54.3%); the frequency of this mutation did not differ between patients with either the hepatic or the neurological presentation (P = 0.099). d-penicillamine or zinc salts (81 and 17% respectively) were used for treatment, and three patients underwent liver transplantation. The majority of symptomatic patients became asymptomatic, or improved, during the follow-up (82% patients with hepatic presentation, 69% with neurological presentation). The long-term survival of patients with WD did not differ from that of the general Czech population (P = 0.95). CONCLUSIONS: Long-term follow-up shows a satisfactory response in the great majority of adequately treated patients with WD and survival coincides with that of the general population.
- MeSH
- adenosintrifosfatasy genetika metabolismus MeSH
- asymptomatické nemoci MeSH
- časové faktory MeSH
- chelátory metabolismus MeSH
- dospělí MeSH
- fenotyp MeSH
- frekvence genu MeSH
- genetická predispozice k nemoci MeSH
- hepatolentikulární degenerace enzymologie genetika mortalita terapie MeSH
- Kaplanův-Meierův odhad MeSH
- lidé středního věku MeSH
- lidé MeSH
- měď metabolismus MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mutace MeSH
- mutační analýza DNA MeSH
- octan zinečnatý terapeutické užití MeSH
- penicilamin terapeutické užití MeSH
- progrese nemoci MeSH
- proteiny přenášející kationty genetika metabolismus MeSH
- retrospektivní studie MeSH
- rozdělení chí kvadrát MeSH
- síran zinečnatý terapeutické užití MeSH
- transplantace jater MeSH
- výsledek terapie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
