Introduction: Rheumatoid arthritis (RA) is a chronic autoimmune disease with unknown cause. It mainly affects joints and, without proper treatment, negatively impacts their movement, causes painful deformities, and reduces the patients' quality of life. Current treatment options consist of various types of disease-modifying antirheumatic drugs (DMARDs), however 20-30% of patients are partially resistant to them. Therefore, development of new drugs is necessary. Possible option are compounds exhibiting their action via endocannabinoid system, which plays an important role in pain and inflammation modulation. One such compound - cannabidiol (CBD) has already been shown to attenuate synovitis in animal model of RA in in vivo studies. However, it has low bioavailability due to its low water solubility and lipophilicity. This issue can be addressed by preparation of a lipid containing formulation targeting lymphatic system, another route of absorption in the body. Materials and Methods: CBD-containing emulsion was prepared by high-shear homogenization and its droplet size distribution was analysed by optical microscopy. The relative oral bioavailability compared to oil solution as well as total availability of CBD were assessed in a cross-over study in rats and absorption of CBD via lymphatic system was observed. The effect of CBD on the animal model of RA was determined. Results: Compared to oil solution, the emulsion exhibited higher absolute oral bioavailability. Significant lymphatic transport of CBD was observed in all formulations and the concentrations in lymph were calculated. The therapeutic effect of CBD on RA was confirmed as an improvement in clinical symptoms as well as morphological signs of disease activity were observed during the study. Conclusion: In this work, we prepared a simple stable emulsion formulation, determined the pharmacokinetic parameters of CBD and calculated its absolute bioavailability in rats. Moreover, we successfully tested the pharmaceutical application of such a formulation and demonstrated the positive effect of CBD in an animal model of RA.
- MeSH
- aplikace orální MeSH
- bolest farmakoterapie MeSH
- emulze MeSH
- kanabidiol * farmakologie chemie MeSH
- klinické křížové studie MeSH
- krysa rodu rattus MeSH
- kvalita života MeSH
- revmatoidní artritida * farmakoterapie MeSH
- voda MeSH
- zvířata MeSH
- Check Tag
- krysa rodu rattus MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- MeSH
- jóga MeSH
- lidé MeSH
- spondylolistéza * klasifikace rehabilitace MeSH
- terapie cvičením * metody MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
Particle size is a key parameter when dealing with drug particle formation, delivery or dissolution. The correct measurement of particle size depends on various factors, such as sample preparation or dilution, but also on the choice of method for its characterization. In this work, we study the process of precipitation of poorly water-soluble drug Valsartan from supersaturated solution in the presence of nonionic surfactant Tween 20. Several techniques including dynamic light scattering (DLS) operated in several measuring modes, optical microscope (OM) and static light scattering (SLS) were used to analyze the kinetics of particle formation. As concluded by the results, the increase in turbidity of the solution seriously limits the application of classical DLS to properly measure the particle size and polydispersity. One way to get around this restriction is by dilution, which however results in a decrease in the size of Valsartan particles in the studied population. In contrast, here we present for a first time technique based on modulated 3D cross correlation DLS equipped with the sample goniometer to determine size of submicron particles of the drug in highly turbid solutions. Additionally, a modified OM was used to measure micron-sized particles for samples without any dilution in a continuous mode. Measured particle sizes combined with measured Valsartan concentration allowed us to identify mechanism responsible for the particle formation from supersaturated solutions. The main mechanism, as it is shown in this work, is covering surface of precipitate particles by the amount of used Tween 20.
Druhé přepracované vydání 128 stran, 7 vložených nečíslovaných listů : ilustrace ; 21 cm
- MeSH
- domácí násilí zákonodárství a právo MeSH
- hodnocení rizik MeSH
- oběti zločinu MeSH
- poskytování zdravotní péče zákonodárství a právo MeSH
- postoj zdravotnického personálu MeSH
- trestní zákon MeSH
- úrazy a nehody MeSH
- Konspekt
- Sociální problémy vyžadující podporu a pomoc. Sociální zabezpečení
- NLK Obory
- veřejné zdravotnictví
- sociologie
- právo, zákonodárství
- NLK Publikační typ
- kolektivní monografie
- Klíčová slova
- funkční gynekologické poruchy,
- MeSH
- gynekologické chirurgické výkony * rehabilitace MeSH
- hojení ran MeSH
- inkontinence moči * rehabilitace MeSH
- klimakterium MeSH
- lidé MeSH
- menstruační poruchy diagnóza patofyziologie rehabilitace MeSH
- muskuloskeletální systém patofyziologie MeSH
- pánevní zánět rehabilitace MeSH
- poporodní období MeSH
- premenstruační syndrom MeSH
- retroverze dělohy rehabilitace MeSH
- těhotenství MeSH
- terapie cvičením * MeSH
- Check Tag
- lidé MeSH
- těhotenství MeSH
- ženské pohlaví MeSH
PRIMARY OBJECTIVE: To assess predisposing and precipitating risk factors and create a predictive model for post-stroke delirium. RESEARCH DESIGN: A prospective observational study in a cohort of consecutive patients with ischemic stroke or intracerebral haematoma admitted within 24 hours of stroke onset. METHODS: Patients were assessed daily for delirium during the first week by means of DSM-IV criteria and risk factors were recorded. RESULTS: One hundred patients completed a 7-day evaluation (47 women and 53 men, median age 77 years). An episode of delirium was detected in 43 patients (43%). Using multivariate logistic regression, a predictive statistical model was developed that utilized independent risk factors: age (OR = 1.08; 95% CI = 1.02-1.15); intracerebral haemorrhage (OR = 6.11; 95% CI = 1.62-22.98), lesion volume > 40 ccm (OR = 3.99; 95% CI = 1.29-12.39) and either elevated gamma-glytamyl transferase (OR = 4.88; 95% CI = 1.45-16.35) and elevated serum bilirubin (OR = 3.70; 95% CI = 1.32-10.38) or maximum sequential organ failure assessment score >2 (OR = 3.33; 95% CI = 1.06-10.45) with acceptable sensitivity and specificity (69.0% and 80.7%). In ischemic strokes, total anterior circulation infarctions were more frequently associated with delirium (73.3% developed delirium) compared with the remainder of the groups combined (p = 0.004; OR = 6.66; 95% CI = 1.85-24.01). CONCLUSION: Higher age, metabolic disturbances, intracerebral haemorrhage and larger ischemic hemispheric strokes increase the risk of post-stroke delirium.
- MeSH
- bilirubin krev MeSH
- C-reaktivní protein metabolismus MeSH
- časové faktory MeSH
- cerebrální krvácení krev komplikace patofyziologie MeSH
- cévní mozková příhoda krev komplikace patofyziologie MeSH
- delirium krev etiologie patofyziologie MeSH
- Diagnostický a statistický manuál mentálních poruch MeSH
- gama-glutamyltransferasa krev MeSH
- lidé MeSH
- míra přežití MeSH
- prediktivní hodnota testů MeSH
- prognóza MeSH
- prospektivní studie MeSH
- rizikové faktory MeSH
- senioři MeSH
- teoretické modely MeSH
- věkové faktory MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Publikační typ
- abstrakt z konference MeSH
Úvod: Incidence deliria v podmínkách intenzivní péče dosahuje 62 % a u nemocných s umělou plicní ventilací až 82 %. Delirium je však poddiagnostikované pro nepoužívání standardizovaných diagnostických nástrojů; v českém jazyce takový standardizovaný test není dosud k dispozici. Cílem studie bylo standardizovat českou verzi nejčastěji používaného standardizovaného testu v angličtině - The Confusion Assessment Method for the Intensive Care Unit (CAM-ICU). Soubory a metodika: Česká verze CAM-ICU (CAM-ICUcz) byla přeložena metodou "forward- backward translation" a akceptována tvůrci originálního testu (http:/ / www.icudelirium.org/ docs/ CAM_ICU_training_Czech.pdf). Stanovení validity CAM-ICUcz v detekci přítomnosti deliria oproti zlatému standardu - expertnímu stanovení na základě mezinárodně uznávaných kritérií deliria dle diagnostického a statistického manuálu psychických nemocí (DSM IV) - bylo provedeno u nemocných s: A. Akutní cévní mozkovou příhodou (aCMP) n = 80; B. Umělou plicní ventilací: n = 10; C. Demencí: n = 34; D. Depresí: n = 20; E. Schizofrenií: n = 22. Výsledky: Expertní hodnocení zaznamenalo epizodu deliria u 37 nemocných s aCMP (46,25 %). Test CAM-ICU prokázal senzitivitu 97,3 % a specificitu testu 93,0 %. U všech tří nemocných s falešně pozitivním deliriem dle CAM-ICUcz šlo o nemocné s těžkou formou globální nebo Wernickeovy afázie. Test byl proveditelný i v podmínkách umělé plicní ventilace, kde jsme zaznamenali delirium u 50 % nemocných a 100% shodu s expertním hodnocením. U žádného z nemocných s demencí, depresí nebo schizofrenií nebyla dle CAM-ICUcz splněna kritéria deliria (100% specificita). Praktické použití testu prokázalo jeho krátké trvání (do 10 min) a použitelnost zdravotnickými pracovníky - nespecialisty v neuropsychologickém testování u kriticky nemocných včetně umělé plicní ventilace. Závěr: CAM-ICUcz je vhodný skríningový test pro detekci deliria v intenzivní péči.
Introduction: The incidence of delirium in intensive care settings is reported as 62%, and in mechanically-ventilated patients it reaches 82%. Delirium is, however, underdiagnosed because of the non-use of standardised diagnostic tools; no such tool yet exists in the Czech language. The aim was to standardise a Czech version of the most frequently used standard test in the English language ? the Confusion Assessment Method for the Intensive Care Unit (CAM-ICU). Patients and method: A Czech version of CAM-ICU (CAM-ICUcz) was prepared by using a "forward-backward translation" method followed by acceptance on the part of the authors of the original test (http://www.icudelirium. org/docs/CAM_ICU_training_Czech.pdf). The assessment of CAM-ICUcz validity to detect delirium, compared with the expert assessment based on standard criteria for delirium of the Diagnostic and Statistical Manual of mental disorders (DSM IV), was performed in patients with: A. Acute cerebral stroke: n = 80; B. Mechanical ventilation: n = 10; C. Dementia: n = 34; D. Depression: n = 20; E. Schizophrenia: n = 22. Results: The expert assessment found an episode of delirium in 37 stroke patients (46.25%). The sensitivity and specificity of CAM-ICUcz were 97.3% and 93.0% respectively. All three patients with false positive for delirium due to CAM-ICUcz had severe aphasia of the global or Wernicke type. The test was performable even in mechanically ventilated patients, with delirium detected in 50% of patients and 100% concordance with the expert assessment. CAM-ICUcz was negative in all patients with dementia, depression and schizophrenia (specificity 100%). The test appeared to be quick (duration up to 10 minutes) and applicable by health care workers not specialised in neuropsychological testing in intensive care patients, including those mechanically ventilated. Conclusion: CAM-ICUcz is a suitable screening test for detection of delirium in the intensive care setting.
- MeSH
- Alzheimerova nemoc diagnóza klasifikace komplikace MeSH
- cévní mozková příhoda diagnóza klasifikace komplikace MeSH
- deprese MeSH
- financování organizované MeSH
- jednotky intenzivní péče normy využití MeSH
- lidé MeSH
- neurokognitivní poruchy diagnóza klasifikace MeSH
- neuropsychologické testy normy statistika a číselné údaje MeSH
- plicní ventilace MeSH
- plošný screening metody využití MeSH
- prospektivní studie MeSH
- průzkumy a dotazníky klasifikace normy využití MeSH
- psychiatrické posuzovací škály normy statistika a číselné údaje MeSH
- schizofrenie MeSH
- urgentní lékařství metody normy trendy MeSH
- Check Tag
- lidé MeSH