PURPOSE: The aim of our study was to evaluate the adherence to mineralocorticoid receptor (MR) antagonists and other antihypertensive therapy and blood pressure control in conservatively treated patients with primary aldosteronism (PA). MATERIALS AND METHODS: Conservatively treated subjects with previously confirmed PA (n-50, 64.5 ± 9 years of age, 24% women) were investigated via our outpatient hypertension clinic. All subjects underwent regular examinations in our clinic. In addition to basic laboratory and clinical parameters, 24 h ambulatory blood pressure monitoring (ABPM) (Spacelabs) was evaluated. Unplanned blood sampling for assessment of serum antihypertensive drug concentrations by the means of liquid chromatography-mass spectrometry was performed in all patients. In case of spironolactone, its active metabolite canrenone was also evaluated. Total non-compliance was then defined as the absence of all measured antihypertensive drugs. Partial non-compliance was calculated as the absence of serum levels of at least one, but not all antihypertensive drugs prescribed. RESULTS: Good blood pressure control was detected (mean 24 h systolic/diastolic BP 130 ± 12/77 ± 9 mmHg). The average number of antihypertensive drugs was 3.9 ± 1.5. All subjects were treated by MR antagonists. 44% of patients received spironolactone (average daily dose 45 ± 20 mg) and in the remaining 56% of subjects eplerenone was administered (average daily dose 80 ± 30 mg) due to spironolactone side effects. Assessment of antihypertensive drug concentrations revealed full adherence in 80% of all subjects, partial nonadherence was noted in the remaining 20% of subjects. MR antagonist levels were detected in almost all subjects (49 out of 50). CONCLUSIONS: Good blood pressure control and adherence to therapy were detected in conservatively treated patients with PA. Eplerenone had to be used quite often as male subjects did not tolerate dose escalation due to spironolactone side effects.
- MeSH
- ambulantní monitorování krevního tlaku MeSH
- antagonisté mineralokortikoidních receptorů farmakologie terapeutické užití MeSH
- antihypertenziva MeSH
- eplerenon farmakologie terapeutické užití MeSH
- hyperaldosteronismus * farmakoterapie MeSH
- hypertenze * farmakoterapie MeSH
- krevní tlak MeSH
- lidé středního věku MeSH
- lidé MeSH
- senioři MeSH
- spironolakton terapeutické užití MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
AIM: Plasma values of nicotine and its metabolites are highly variable, and this variability has a strong genetic influence. In our study, we analysed the impact of common polymorphisms associated with smoking on the plasma values of nicotine, nicotine metabolites and their ratios and investigated the potential effect of these polymorphisms and nicotine metabolite ratios on the successful treatment of tobacco dependence. METHODS: Five variants (rs16969968, rs6474412, rs578776, rs4105144 and rs3733829) were genotyped in a group of highly dependent adult smokers (n=103). All smokers underwent intensive treatment for tobacco dependence; 33 smokers were still abstinent at the 12-month follow-up. RESULTS: The rs4105144 (CYP2A6, P<0.005) and rs3733829 (EGLN2, P<0.05) variants were significantly associated with plasma concentrations of 3OH-cotinine and with 3OH-cotinine: cotinine ratios. Similarly, the unweighted gene score was a significant (P<0.05) predictor of both cotinine:nicotine and 3OH-cotinine:cotinine ratios. No associations between the analysed polymorphisms or nicotine metabolite ratios and nicotine abstinence rate were observed. CONCLUSION: Although CYP2A6 and EGLN2 polymorphisms were associated with nicotine metabolism ratios, neither these polymorphisms nor the ratios were associated with abstinence rates.
- MeSH
- cytochrom P450 CYP2A6 genetika MeSH
- cytochrom P450 CYP2B6 genetika MeSH
- dospělí MeSH
- jednonukleotidový polymorfismus * MeSH
- lidé středního věku MeSH
- lidé MeSH
- nikotin krev metabolismus MeSH
- nikotinové receptory genetika MeSH
- poruchy vyvolané užíváním tabáku krev genetika metabolismus terapie MeSH
- proteiny nervové tkáně genetika MeSH
- výsledek terapie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Tuberculosis represents a major global health problem for which improved approaches are needed to shorten the course of treatment and to combat the emergence of resistant strains. The development of effective and safe nanobead-based interventions can be particularly relevant for increasing the concentrations of antitubercular agents within the infected site and reducing the concentrations in the general circulation, thereby avoiding off-target toxic effects. In this work, rifampicin, a first-line antitubercular agent, was encapsulated into biocompatible and biodegradable polyester-based nanoparticles. In a well-established BALB/c mouse model of pulmonary tuberculosis, the nanoparticles provided improved pharmacokinetics and pharmacodynamics. The nanoparticles were well tolerated and much more efficient than an equivalent amount of free rifampicin.
- MeSH
- antibiotika tuberkulostatická * farmakokinetika MeSH
- antituberkulotika MeSH
- Mycobacterium tuberculosis * MeSH
- myši inbrední BALB C MeSH
- myši MeSH
- nanostruktury MeSH
- nosiče léků MeSH
- rifampin * farmakokinetika MeSH
- tuberkulóza * farmakoterapie MeSH
- zvířata MeSH
- Check Tag
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
We hypothesized that screening for nonadherence to antihypertensive treatment using liquid chromatography-tandem mass spectrometry-based biochemical analysis of urine/serum has therapeutic applications in nonadherent hypertensive patients. A retrospective analysis of hypertensive patients attending specialist tertiary care centers was conducted in 2 European countries (United Kingdom and Czech Republic). Nonadherence to antihypertensive treatment was diagnosed using biochemical analysis of urine (United Kingdom) or serum (Czech Republic). These results were subsequently discussed with each patient, and data on follow-up clinic blood pressure (BP) measurements were collected from clinical files. Of 238 UK patients who underwent biochemical urine analysis, 73 were nonadherent to antihypertensive treatment. Their initial urinary adherence ratio (the ratio of detected to prescribed antihypertensive medications) increased from 0.33 (0-0.67) to 1 (0.67-1) between the first and the last clinic appointments. The observed increase in the urinary adherence ratio in initially nonadherent UK patients was associated with the improved BP control; by the last clinic appointment, systolic and diastolic BPs were ≈19.5 and 7.5 mm Hg lower than at baseline (P=0.001 and 0.009, respectively). These findings were further corroborated in 93 nonadherent hypertensive patients from Czech Republic-their average systolic and diastolic BPs dropped by ≈32.6 and 17.4 mm Hg, respectively (P<0.001), on appointments after the biochemical analysis. Our data show that nonadherent hypertensive patients respond to liquid chromatography-tandem mass spectrometry-based biochemical analysis with improved adherence and significant BP drop. Such repeated biochemical analyses should be considered as a therapeutic approach in nonadherent hypertensive patients.
- MeSH
- adherence k farmakoterapii psychologie MeSH
- antihypertenziva * analýza terapeutické užití MeSH
- biologické markery * krev moč MeSH
- chromatografie kapalinová metody MeSH
- dospělí MeSH
- hypertenze * diagnóza farmakoterapie epidemiologie psychologie MeSH
- krevní tlak účinky léků MeSH
- lidé středního věku MeSH
- lidé MeSH
- management farmakoterapie normy MeSH
- měření krevního tlaku metody psychologie MeSH
- senioři MeSH
- výsledky a postupy - zhodnocení (zdravotní péče) MeSH
- zlepšení kvality MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika epidemiologie MeSH
- Spojené království epidemiologie MeSH
Background Although measurement of drug serum levels is an objective direct method for testing compliance, it can be distorted by "white-coat compliance" or by variations in drug elimination. Objective The aim of this prospective study was to evaluate the prevalence of noncompliance with perindopril therapy in adult out-patients using pharmacokinetic simulations. The additional aim was to compare the predictive performance of two glomerular filtration rate markers-creatinine and cystatin C. Setting Department of Cardiology, Tomas Bata Regional Hospital in Zlín, Czech Republic. Method Perindoprilat pharmacokinetic models individualized according to patient characteristics were compared with measured perindoprilat serum concentrations to document compliance. Linear regression was used to evaluate the relations between perindoprilat clearance and glomerular filtration rate estimated using creatinine and cystatin C. Main outcome measure Assessment of non-compliance with medication using drug concentration measurements reinforced with therapeutic drug monitoring. Results Non-detectable perindoprilat levels were observed in 26.1% of patients. Another 21.7% were classified as non-compliant based on therapeutic drug monitoring pharmacokinetic simulations. Volume of distribution, clearance and half-life median value (interquarti°range) for perindoprilat were 408.3 (360.4-456.8) L, 10.1 (4.9-17.0) L h-1 and 24.7 (19.4-62.7) h, respectively. Linear regression models showed tight relationship between cystatin C and perindoprilat clearance. Conclusions Assessment of adherence with medication reinforced with therapeutic drug monitoring and pharmacokinetic simulations is proposed as an optimal method reducing disadvantages of simple drug concentration measurements. Cystatin C proves to be better surrogate marker for perindoprilat elimination than creatinine.
- MeSH
- adherence k farmakoterapii * MeSH
- cystatin C metabolismus MeSH
- hodnoty glomerulární filtrace účinky léků fyziologie MeSH
- inhibitory ACE metabolismus farmakologie MeSH
- kreatinin metabolismus MeSH
- lidé MeSH
- metabolická clearance účinky léků fyziologie MeSH
- monitorování léčiv metody MeSH
- perindopril metabolismus farmakologie MeSH
- pilotní projekty MeSH
- prospektivní studie MeSH
- senioři MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky MeSH
Nonadherence to antihypertensive treatment is a critical contributor to suboptimal blood pressure control. There are limited and heterogeneous data on the risk factors for nonadherence because few studies used objective-direct diagnostic methods. We used high-performance liquid chromatography-tandem mass spectrometry of urine and serum to detect nonadherence and explored its association with the main demographic- and therapy-related factors in 1348 patients with hypertension from 2 European countries. The rates of nonadherence to antihypertensive treatment were 41.6% and 31.5% in the UK and Czech populations, respectively. Nonadherence was inversely related to age and male sex. Each increase in the number of antihypertensive medications led to 85% and 77% increase in nonadherence (P<0.001) in the UK and Czech populations, respectively. The odds of nonadherence to diuretics were the highest among 5 classes of antihypertensive medications (P≤0.005 in both populations). The predictive model for nonadherence, including age, sex, diuretics, and the number of prescribed antihypertensives, showed area under the curves of 0.758 and 0.710 in the UK and Czech populations, respectively. The area under the curves for the UK model tested on the Czech data and for the Czech model tested on UK data were calculated at 0.708 and 0.756, respectively. We demonstrate that the number and class of prescribed antihypertensives are modifiable risk factors for biochemically confirmed nonadherence to blood pressure-lowering therapy. Further development of discriminatory models incorporating these parameters might prove clinically useful in assessment of nonadherence in countries where biochemical analysis is unavailable.
- MeSH
- adherence k farmakoterapii statistika a číselné údaje MeSH
- adherence pacienta statistika a číselné údaje MeSH
- antihypertenziva terapeutické užití MeSH
- diuretika terapeutické užití MeSH
- hodnocení rizik MeSH
- hypertenze diagnóza farmakoterapie MeSH
- kohortové studie MeSH
- lidé středního věku MeSH
- lidé MeSH
- měření krevního tlaku metody MeSH
- prediktivní hodnota testů MeSH
- retrospektivní studie MeSH
- senioři MeSH
- sexuální faktory MeSH
- stupeň závažnosti nemoci MeSH
- věkové faktory MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- multicentrická studie MeSH
- Geografické názvy
- Česká republika MeSH
- Spojené království MeSH
- Publikační typ
- abstrakt z konference MeSH
- Publikační typ
- abstrakt z konference MeSH
Úvod: Při neklidu, úzkosti a agitovanosti je někdy nutné přikročit k intramuskulární (i. m.) aplikaci benzodiazepinů. V ČR je často používán diazepam. Cílem práce je zjistit interindividuální variabilitu koncentrací diazepamu v séru po i. m. aplikaci a hodnotit klinický efekt léku. Metodika: Do hodnocení jsme zařadili šest mužů, kterým bylo při ambulantní léčbě aplikováno 10 mg diazepamu i. m. Měření farmakokinetických parametrů a anxiety byla prováděna po 30 min (T1), dále po 4 (T2) a 24 hod (T3). Diagnóza byla stanovena pomocí Mini-International Neuropsychiatric Interview, anxietu jsme kvantifikovali Hamiltonovou škálou úzkosti (HAMA). Výsledky: V čase T1 (po 30 min) byly průměrné (geometrický průměr) hladiny diazepamu v séru 14,6 ng/ml, za 4 hod 48,6 ng/ml a za 24 hod 28,7 ng/ml. Hodnoty v čase T1 se pohybovaly v rozmezí 0,5–148,0 ng/ml. Nenalezli jsme vztah mezi skórem HAMA a koncentracemi diazepamu. U všech pacientů došlo k poklesu úzkosti v čase T1 na normální hodnoty (HAMA < 13). Při dalším sledování už nebyly hodnoty HAMA zvýšené. Závěr: Koncentrace diazepamu byly v průměru u pacientů 30 min po aplikaci výrazně nižší než po 4 i 24 hodinách. Největší variabilitu koncentrací jsme pozorovali za 30 min, kdy byl rozdíl mezi nemocnými 280násobný. Tato zjištění potvrzují zahraniční zkušenosti, podle kterých diazepam v i. m. formě nemá být užíván k ovlivnění akutních stavů. Diskutujeme o rozdílech mezi SPC jednotlivých přípravků a oficiálních doporučujících pokynů, které nutí k nevhodné aplikaci diazepamu i. m. a zároveň neumožňují jiné než off-label užití v guidelines doporučovaného midazolamu.
Introduction: There is a need for intramuscular (IM) administration of benzodiazepines for acute restlessness, anxiety and agitation. In the Czech Republic, diazepam is frequently used. The aim of this study was to determine the variability of serum diazepam concentrations after IM administration and evaluate its clinical effect. Methods: We included six men, who were administered 10 mg of diazepam IM in an outpatient setting. Measurements were carried out 30 minutes (T1), 4 (T2) and 24 hours (T3) after diazepam administration. The diagnosis was determined using the Mini-International Neuropsychiatric Interview, anxiety was quantified by the Hamilton Anxiety Rating Scale (HAMA). Results: The mean levels of diazepam in the serum were 14.6 ng/ml at T1 (after 30 minutes), 48.6 ng/ml at 4 hours and 28.7 ng/ml at 24 hours after administration. The values at T1 ranged from 0.5 ng/ml to 148.0 ng/ml. We found no relationship between the scores of HAMA and concentrations of diazepam. Anxiety decreased to normal values (HAMA < 13) at the time T1 in all patients. Conclusions: Concentrations of diazepam were lower 30 minutes after the administration than after 4 and 24 hours, respectively. We observed the largest variability in concentrations 30 minutes after the administration, when the concentrations between patients differed 280-times. This finding confirms international experience that IM diazepam administration should not be used. We discuss the differences between individual SPCs and guidelines that force inappropriate use of diazepam IM and do not permit other than off-label use of midazolam. Key words: diazepam – pharmacokinetics – agitation – aggression – intramuscular administration The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study. The Editorial Board declares that the manuscript met the ICMJE “uniform requirements” for biomedical papers.
- Klíčová slova
- interindividuální rozdíly, interindividuální variabilita,
- MeSH
- agitované chování MeSH
- agrese * účinky léků MeSH
- akutní nemoc MeSH
- antipsychotika terapeutické užití MeSH
- anxiolytika aplikace a dávkování farmakokinetika terapeutické užití MeSH
- benzodiazepiny terapeutické užití MeSH
- časové faktory MeSH
- diazepam * aplikace a dávkování farmakokinetika krev terapeutické užití MeSH
- dospělí MeSH
- haloperidol terapeutické užití MeSH
- hodnocení léčiv MeSH
- injekce intramuskulární * MeSH
- lidé MeSH
- lorazepam terapeutické užití MeSH
- poruchy přizpůsobení farmakoterapie MeSH
- úzkost * farmakoterapie MeSH
- úzkostné poruchy farmakoterapie MeSH
- výsledek terapie MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- práce podpořená grantem MeSH
- Publikační typ
- abstrakt z konference MeSH
