Cíl: Observační studie pacientů diagnostikovaných s těžkou komunitní pneumonií (sCAP) sledovala hladiny interleukinu-17A a počtu T helper 17 (Th17) lymfocytů v periferní cirkulaci a tekutině z bronchoalveolární laváže (BAL) v časném průběhu komunitní pneumonie různé etiologie a porovnala je s charakteristikami pacientů a klinickým výsledkem. Materiál a metody: Kohorta 74 pacientů s těžkou komunitní pneumonií byla analyzována s identifikací jednotlivých původců pneumonie. Podle etiologie byli pacienti rozděleni do tří skupin: bakteriální, virové a smíšené etiologie. Počet Th17 lymfocytů a koncentrace IL-17A byly měřeny s využitím průtokové cytometrie a metody ELISA v periferní krvi a tekutině z BAL. Data byla porovnána podle etiologie sCAP a statistickou analýzou stanovena jejich korelace s 30a 90denní mortalitou. Výsledky: Statistická korelace mezi počtem Th17 lymfocytů a koncentrací IL-17A v krvi ani v tekutině z BAL s 30a 90denní mortalitou nebyla prokázána. Nicméně, zvýšený počet Th17 lymfocytů v periferní cirkulaci, nikoli však v tekutině z BAL, v časném průběhu sCAP koreloval se zvýšeným relativním rizikem úmrtí. Dalšími faktory zvyšujícími relativní riziko smrti byl věk a mužské pohlaví. Závěr: Hladiny Th17 a IL-17A v systémové cirkulaci v časném průběhu sCAP (v prvních 7 dnech od diagnózy) mohou korelovat s tíží a mortalitou sCAP.
Objective: Observational study of patients diagnosed with severe community acquired pneumonia (sCAP) carried out to evaluate levels of interleukin 17A (IL-17A) and T helper 17 (Th17) lymphocyte count in peripheral circulation and bronchoalveolar lavage fluid (BALF) in the early course of sCAP of different etiology and to compare them with patient’s characteristics and outcome. Material and methods: Cohort of 74 patients with sCAP was analyzed and respective microbial etiology established. According to pathogens, 3 subgroups of patients were created: bacterial, viral and mixed etiology. Th17 count and IL-17A levels were measured using flow cytometry and ELISA in peripheral blood and BALF. Data were compared with respect to etiology and their correlation with 30and 90-day mortality was statistically analyzed. Results: There was no statistically significant correlation in Th17 count and IL-17A levels in blood and BALF between etiological subgroups of CAP and no correlation was found with respect to measured parameters and 30and 90-day mortality. Nevertheless, increased Th17 cell count and IL-17A levels in peripheral blood, but not in BALF, in the early course of sCAP are correlated with increased relative risk of death from sCAP. Other factors increasing relative risk of death in patients with sCAP found in our cohort were male sex and advanced age. Conclusions: Systemic Th17 count and IL-17A levels in the early course (up to 7 days from admission) of sCAP may be correlated with severity and outcome of sCAP.
- MeSH
- buňky Th17 * imunologie MeSH
- imunologické testy metody MeSH
- infekce získané v komunitě diagnóza imunologie mortalita MeSH
- interleukin-17 * analýza imunologie MeSH
- lidé MeSH
- mikrobiologické techniky metody MeSH
- pneumonie * etiologie imunologie mortalita MeSH
- pozorovací studie jako téma metody MeSH
- prognóza MeSH
- rizikové faktory MeSH
- stupeň závažnosti nemoci MeSH
- Check Tag
- lidé MeSH
Východiska a cíle: Nespočet studií prokázal neoddiskutovatelný přínos prokalcitoninu (PCT) v diagnostice sepse. V poslední době je navíc diskutován potenciální vztah koncentrací PCT k různým patogenům a ložiskům infekce. Hlavním cílem předkládané studie bylo porovnání hladin PCT u septických pacientů s dokumentovanou grampozitivní a gramnegativní bakteremií. Vyhodnotili jsme také koncentrace PCT ve vztahu k různým ložiskům infekce a jednotlivým patogenům. Metody: V dobře definované kohortě septických pacientů byly vyhodnoceny koncentrace PCT v čase klinické diagnózy sepse (PCT1) a za 24 hodin (PCT2) a porovnány s výsledky hemokultur a ložisky infekce. Výsledky: U 258 pacientů byla pozitivní hemokultura zdokumentována v 78 případech. Rozdíl v PCT1 i PCT2 mezi skupinami pacientů s dokumentovanou grampozitivní a gramnegativní hemokulturou nebyl statisticky významný. Ve skupině bakteremických pacientů byly nejvyšší koncentrace PCT1 i PCT2 zaznamenány u pacientů se sepsí způsobenou streptokoky a Escherichia coli v kontrastu s infekcemi způsobenými stafylokoky s nejnižšími zaznamenanými hladinami. Nejvyšší koncentrace PCT byly zaznamenány u pacientů s urosepsí se signifikantně vyššími hladinami PCT2 oproti všem ostatním sledovaným ložiskům sepse. Závěry: Schopnost PCT rozlišovat mezi grampozitivní a gramnegativní bakteremií u kriticky nemocných pacientů se sepsí je nízká. Koncentrace PCT korelují pravděpodobně spíše s jednotlivými typy patogenů a ložisky infekce než s výsledky Gramova barvení. Nejvyšší hladiny PCT byly zaznamenány u streptokoků. Signifikantně vyšší koncentrace PCT oproti všem ostatním ložiskům infekce byly zaznamenány u urosepsí 24 hodin od stanovení klinické diagnózy sepse.
Background and aim: Large number of studies proved undisputable role of procalcitonin (PCT) in sepsis diagnosis. Moreover, potential of procalcitonin to predict blood culture results according to Gram staining, different types of pathogens and foci of infection is discussed lately. The primary aim of our study was to compare the PCT levels in septic patients with documented Gram-positive and Gram-negative bacteraemia. We also evaluated the PCT levels according to different foci of infection and with different types of pathogens. Material and Methods: Procalcitonin levels measured at the time of sepsis diagnosis (PCT1) and after 24 hours (PCT2) in welldefined cohort of septic patients were statistically evaluated according to the results of blood cultures and foci of infection. Results: Out of 258 patients, 180 had negative and 78 positive blood culture. The difference in PCT1 and PCT2 levels between gram-negative (GN) and gram-positive (GP) bacteraemia was not significant. The highest values of PCT1 as well as PCT2 in culturepositive cases were found in patients infected with Streptococcus spp. followed by Escherichia Coli in contrast to Staphylococcus spp. with the lowest PCT concentrations. Highest procalcitonin levels were observed in urosepsis with PCT2 concentrations significantly higher than in all other foci of infection. Conclusion: PCT discriminatory power to differentiate between GN and GP bacteraemia in septic patients appears to be low. PCT concentrations correlates probably more closely to different type of pathogens with highest PCT levels in Streptococci spp. and foci of infection rather than result of the Gram stain. In our study population, urosepsis showed statistically significant higher PCT concentrations 24 hours following sepsis diagnosis when compared to other site of infection.
- MeSH
- bakteriemie diagnóza etiologie mikrobiologie MeSH
- kultivační vyšetření krve metody přístrojové vybavení statistika a číselné údaje MeSH
- lidé středního věku MeSH
- lidé MeSH
- prokalcitonin * krev MeSH
- senioři MeSH
- sepse * diagnóza krev mikrobiologie patologie MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- klinická studie MeSH
The use of convalescent plasma (CP) appeared to be a promising, easily available and safe way of treatment of severe COVID-19 at the onset of the pandemic in early 2020. Conducted in 2020 and 2021, our study of 52 severely to critically ill COVID-19 patients who received CP plasma as a treatment and of 97 controls found no difference in 30-day or 90-day mortality rates. A significant viral load drop in most patients (4.7 log10 [p<0.001] copies/ml) was observed following CP administration. Retrospective analysis of selected inflammatory markers and immunoglobulins showed higher C-reactive protein levels among the study group, and their decrease on Day 7.
- MeSH
- COVID-19 * terapie MeSH
- lidé MeSH
- pasivní imunizace MeSH
- retrospektivní studie MeSH
- sérologická léčba covidu-19 MeSH
- virová nálož MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
Sepsis (and septic shock) is on of the most common causes of death worldwide. Bacteremia often, but not necessarily, occurs in septic patients, but the impact of true bacteremia on a patient's clinical characteristics and outcome remains unclear. The main aim of this study was to compare the characteristics and outcome of a well-defined cohort of 258 septic patients with and without bacteremia treated in the intensive care unit (ICU) of a tertiary center hospital in Prague, Czech Republic. As expected, more frequently, bacteremia was present in patients without previous antibiotic treatment. A higher proportion of bacteremia was observed in patients with infective endocarditis as well as catheter-related and soft tissue infections in contrast to respiratory sepsis. Multivariant analysis showed increased severity of clinical status and higher Charlson comorbidity index (CCI) as variables with significant influence on mortality. Bacteremia appears to be associated with higher mortality rates and length of ICU stay in comparison with nonbacteremic counterparts, but this difference did not reach statistical significance. The presence of bacteremia, apart from previous antibiotic treatment, may be related to the site of infection.
- Publikační typ
- časopisecké články MeSH
Myristic acid is identified as a metabolite with the highest diagnostic sensitivity and specificity in the metabolome of patients with bacteraemia. Its significant decrease has been observed in patients with septic shock not responding to treatment. Another study has reported a close correlation of myristic acid levels with the outcome of severe trauma patients. Myristic acid concentrations were investigated in a cohort of septic patients and patients with Systemic Inflammatory Response Syndrome (SIRS) in 5 consecutive days following diagnosis and compared to healthy controls. The study population groups-Sepsis 34, SIRS 31, and Healthy Control 120 patients were included. Serum samples were analyzed using gas chromatography and mass spectrometry. The myristic acid levels in the Sepsis Group and SIRS Group were found to be significantly higher when compared to healthy controls. The serum concentration of myristic acid in septic patients with bacteraemia was higher than in septic patients without bacteraemia. Most patients with sepsis and SIRS had the highest levels of myristic acid within 24 h after an established diagnosis. Myristic acid should be considered as a new candidate marker of severe inflammation and sepsis. A simplified analysis and sufficient body of validated data are necessary steps towards the introduction of this metabolite into routine clinical practice.
- Publikační typ
- časopisecké články MeSH
Myristic acid was identified as a metabolite with the highest diagnostic sensitivity and specificity in the metabolome of patients with bacteraemia. Subsequently, its significant decrease was observed in patients in septic shock not responding to treatment. In our study we have captured myristic acid serum level kinetics in 96 hours following accidental intravenous self-administration of eubiotic Hylak forte causing infection-like systemic inflammatory response syndrome (SIRS). To our knowledge, this is the first time the kinetics of myristic acid levels is presented in a septic patient. Myristic acid was evaluated in comparison with other inflammatory biomarkers and with its level in a control group of healthy subjects. Myristic acid levels during septic response were significantly elevated in comparison with the control group. The peak level was recorded almost immediately after the insult with a gradual decrease within 96 hours. Myristic acid appears to be a promising biomarker in sepsis diagnostics, further research by our group into this topic is ongoing.
- MeSH
- biologické markery analýza metabolismus MeSH
- kinetika MeSH
- kyselina myristová metabolismus MeSH
- lidé MeSH
- sepse metabolismus MeSH
- septický šok metabolismus MeSH
- syndrom MeSH
- zánět metabolismus MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
RATIONALE: The major objective of this exploratory study was to implement selected ion flow tube mass spectrometry, SIFT-MS, as a method for the on-line quantification of the volatile organic compounds, VOCs, in the headspace of the ground roasted coffee. METHODS: The optimal precursor ions and characteristic analyte ions were selected for real-time SIFT-MS quantification of those VOCs that are the most abundant in the headspace or known to contribute to aroma. NO+ reagent ion reactions were exploited for most of the VOC analyses. VOC identifications were confirmed using gas chromatography/mass spectrometry, GC/MS, coupled with solid-phase microextraction, SPME. RESULTS: Thirty-one VOCs were quantified, including several alcohols, aldehydes, ketones, carboxylic acids, esters and some heterocyclic compounds. Variations in the concentrations of each VOC in the seven regional coffees were typically less than a factor of 2, yet concentrations patterns characteristic of the different regional coffees were revealed by heat map and principal component analyses. The coefficient of variation in the concentrations across the seven coffees was typically below 24% except for furfural, furan, methylfuran and guaiacol. CONCLUSIONS: The SIFT-MS analytical method can be used to quantify in real time the most important odoriferous VOCs in ground coffee headspace to sufficient precision to reveal some differences in concentration patterns for coffee produced in different countries.
- MeSH
- aldehydy analýza MeSH
- alkoholy analýza MeSH
- analýza hlavních komponent MeSH
- analýza potravin metody MeSH
- Coffea chemie MeSH
- hmotnostní spektrometrie metody MeSH
- káva chemie MeSH
- ketony analýza MeSH
- manipulace s potravinami MeSH
- mikroextrakce na pevné fázi metody MeSH
- plynová chromatografie s hmotnostně spektrometrickou detekcí metody MeSH
- těkavé organické sloučeniny analýza chemie MeSH
- Publikační typ
- časopisecké články MeSH
