BACKGROUND: Specific toxic compounds, such as polycyclic aromatic hydrocarbons (PAHs) and their metabolites, may affect the inhalation injury (INHI) grade, patients' status, and prognosis for recovery. This pilot prospective study aimed to: i) evaluate the suitability of bronchoalveolar lavage (BAL) for determination of PAHs in the LRT and of urine for determination of hydroxylated metabolites (OH-PAHs) in patients with INHI, ii) describe the dynamic changes in the levels of these toxic compounds, and iii) correlate these findings with clinical variables of the patients with INHI. METHODS: The BAL and urine samples from 10 patients with INHI were obtained on Days 1, 3, 5, 7, and 14 of hospitalization, if possible, and PAHs (BAL) and OH-PAHs (urine) were analyzed using chromatographic methods (GC-MS and HPLC). RESULTS: Concentrations of analyzed PAHs were in most cases and time points below the limit of quantification in BAL samples. Nine OH-PAHs were detected in the urine samples; however, their concentrations sharply decreased within the first three days of the hospitalization. On Day 14, the total amount of OH-PAHs in urine was higher in surviving patients with High-grade INHI (≥3) than in those with Low-grade INHI (<3, p = 0.032). Finally, a significant correlation between certain OH-PAHs and clinical variables (AST/ALT, TBSA, ABSI) from Day 1 of the hospitalization was observed (p<0.05). CONCLUSIONS: BAL samples are not suitable for the analysis of PAHs. However, the OH-PAHs levels in urine can be measured reliably and were correlated with several clinical variables. Moreover, High-grade INHI was associated with higher total concentrations of OH-PAHs in urine.
- MeSH
- bronchoalveolární lavážní tekutina * chemie MeSH
- dospělí MeSH
- hospitalizace * MeSH
- lidé středního věku MeSH
- lidé MeSH
- pilotní projekty MeSH
- polycyklické aromatické uhlovodíky * moč analýza MeSH
- prospektivní studie MeSH
- senioři MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Cieľ: Pneumocystis jirovecii patril v minulosti do skupiny prvokov, ale v súčasnosti je taxonomicky zaradený do ríše húb. P. jirovecii je oportúnny patogén, zodpovedný za pneumocystovú pneumóniu s častými komplikáciami u imunokompromitovaných pacientov. Oneskorené začatie vhodnej liečby zvyšuje riziko úmrtia u pacientov s oslabenou imunitou. Cieľom práce bolo zistiť a zhodnotiť spoľahlivosť metód laboratórnej diagnostiky pneumocystózy používaných v rutinných laboratóriách ako aj výskyt tohto ochorenia u pacientov zo Slovenska za 19 rokov. Materiál a metódy: Diagnostika je založená na mikroskopickom dôkaze (farbenie podľa Giemsa a Gram-Weigerta) a detekcii DNA parazita klasickou alebo real-time PCR v bronchoalveolárnej laváži a spúte. Výsledky: Pneumocysty boli zistené u 190 osôb (5,7 %) z celého súboru pacientov. Onkologickí pacienti predstavovali najrizikovejšiu skupinu z hľadiska infekcie pneumocystami, čo sme potvrdili ich najvyšším podielom (57,9 %) z jedincov s pneumocystózou. Na základe binárneho klasifikačného testu sme vyhodnotili 33,7 % citlivosť a 100 % špecifickosť mikroskopického dôkazu v porovnaní s PCR. Molekulárne metódy sú v porovnaní s mikroskopickým dôkazom citlivejšie v detekcii P. jirovecii a v súčasnosti predstavujú spoľahlivý detekčný systém v diagnostike pneumocystózy. Záver: Vzhľadom na narastajúci počet imunokompromitovaných osôb je diagnostika P. jirovecii u pacientov s pľúcnymi komplikáciami nevyhnutná. To sa potvrdilo aj v našej štúdii, kde v priebehu rokov stúpal počet vyšetrení a záchytov tohto oportúnneho patogénu.
Aim: In the past, Pneumocystis jirovecii belonged to the Protozoa group, but is currently taxonomically included in the kingdom Fungi. P. jirovecii is an opportunistic pathogen, responsible for pneumocystis pneumonia with frequent complications of immunocompromised patients. Delayed initiation of appropriate therapy increases the risk of death in immunocompromised patient. The aim of this work was to determine and evaluate the reliability of methods of laboratory diagnosis of pneumocystosis used in routine laboratories as well as the occurrence of this disease in patients from Slovakia during 19 years. Material and Methods: The diagnosis is based on microscopic examination (Giemsa- and Gram-Weigert-staining) and detection of parasite DNA by classical or real-time PCR in bronchoalveolar lavage and sputum. Results: Pneumocysts were detected in 190 persons (5.7%) from the whole group of patients. Cancer patients represented the riskiest group in terms of pneumocystosis, which was confirmed by the highest percentage (57.9%) of individuals infected with P. jirovecii. Compared with the PCR, 33.7% sensitivity and 100% specificity of microscopy was calculated by using a binary classification test. Molecular methods are more sensitive in the detection of P. jirovecii compared to microscopic evidence and currently represent a reliable detection system in the diagnosis of pneumocystosis. Conclusion: In view of the increasing number of immunocompromised persons, diagnostics of P. jirovecii in patients with pulmonary complications is essential. This was also confirmed in our study, where the number of examinations and detection of this opportunistic pathogen increased over the years.
- MeSH
- bronchoalveolární lavážní tekutina mikrobiologie MeSH
- hostitel s imunodeficiencí MeSH
- imunosupresivní léčba škodlivé účinky MeSH
- kvantitativní polymerázová řetězová reakce MeSH
- lidé MeSH
- Pneumocystis carinii * izolace a purifikace MeSH
- pneumocystová pneumonie diagnóza mikrobiologie MeSH
- Check Tag
- lidé MeSH
- Geografické názvy
- Slovenská republika MeSH
The currently observed high prevalence of allergic diseases has been associated with changes in microbial exposure in industrialized countries. Defined bacterial components represent a new strategy for modulating the allergic immune response. We show that intranasal administration of exopolysaccharide (EPS) isolated from Lacticaseibacillus (L.) rhamnosus LOCK900 induces TGF-β1, IgA, and regulatory FoxP3+ T-cells in the lungs of naïve mice. Using the ovalbumin mouse model, we demonstrate that intranasal administration of EPS downregulates the development of allergic airway inflammation and the Th2 cytokine response in sensitized individuals. At the same time, EPS treatment of sensitized mice, similar to EPS-induced responses in naïve mice, significantly increased the level of total, OVA-specific, and also bacteria-specific IgA in bronchoalveolar lavage and the number of IgA-producing B-cells in the lung tissue of these mice. Thus, EPS derived from L. rhamnosus LOCK900 can be considered a safe candidate for preventing the development of allergic symptoms in the lungs of sensitized individuals upon exposure to an allergen.
- MeSH
- alergie * MeSH
- bronchoalveolární lavážní tekutina MeSH
- imunoglobulin A MeSH
- Lacticaseibacillus rhamnosus * MeSH
- Lacticaseibacillus MeSH
- modely nemocí na zvířatech MeSH
- myši inbrední BALB C MeSH
- myši MeSH
- ovalbumin MeSH
- plíce MeSH
- zánět MeSH
- zvířata MeSH
- Check Tag
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
BACKGROUND: Chronic Obstructive Pulmonary Disease (COPD) and asthma are associated with chronic inflammation leading to airway obstruction and remodelling. There is little information on possible differences in the TGFB signalling pathway in the pathologies compared to less severe chronic bronchitis without airway obstruction. AIM: To assess the expression of the selected TGFB signalling pathway-associated genes in the pathologies. METHOD: RT-PCR was used to quantify the mRNAs in bronchoalveolar cells obtained from the Czech patients with chronic bronchitis (n = 26), COPD (n = 22), asthmatic (n = 14) patients. RESULTS: There was no difference in the BAL cell expression of TGFB1-3, TGFBR1-2, SMAD2,4,5, and 7 between our patients with COPD and those with chronic bronchitis. The expressions were also similar in the patients with asthma and chronic bronchitis. There was no difference between the patients with asthma and COPD. CONCLUSION: Although we observed no differences in our patients, other studies should investigate the genes and their possible correlation with advanced airway obstruction and emphysematous changes (Tab. 2, Fig. 3, Ref. 27).
- MeSH
- bronchoalveolární lavážní tekutina MeSH
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- obstrukční plicní nemoci * patofyziologie MeSH
- proteiny Smad biosyntéza MeSH
- proteosyntéza * MeSH
- receptory transformujícího růstového faktoru beta biosyntéza MeSH
- senioři MeSH
- signální transdukce MeSH
- statistika jako téma MeSH
- transformující růstový faktor beta biosyntéza MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- klinická studie MeSH
- práce podpořená grantem MeSH
In the era of COVID-19 pandemic, organ transplantation programs were facing serious challenges. The lung transplantation donor pool was extremely limited and SARS-CoV-2 viral load assessment has become a crucial part of selecting an optimal organ donor. Since COVID-19 is a respiratory disease, the viral load is thought to be more important in lung transplantations as compared to other solid organ transplantations. We present two challenging cases of potential lung donors with a questionable COVID-19 status. Based on these cases, we suggest that the cycle threshold (Ct) value should always be requested from the laboratory and the decision whether to proceed with transplantation should be made upon complex evaluation of diverse criteria, including the nasopharyngeal swab and bronchoalveolar lavage PCR results, the Ct value, imaging findings and the medical history. However, as the presence of viral RNA does not ensure infectivity, it is still to be clarified which Ct values are associated with the viral viability. Anti-SARS-CoV-2 IgA antibodies may support the diagnosis and moreover, novel methods, such as quantifying SARS-CoV-2 nucleocapsid antigen in serum may provide important answers in organ transplantations and donor selections.
- MeSH
- bronchoalveolární lavážní tekutina virologie MeSH
- COVID-19 diagnóza virologie MeSH
- dárci tkání * MeSH
- dospělí MeSH
- hodnocení rizik MeSH
- lidé středního věku MeSH
- lidé MeSH
- plíce chirurgie virologie MeSH
- prediktivní hodnota testů MeSH
- rizikové faktory MeSH
- SARS-CoV-2 izolace a purifikace MeSH
- testování na COVID-19 MeSH
- transplantace plic * škodlivé účinky MeSH
- virová nálož MeSH
- výběr dárců * MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- kazuistiky MeSH
Lysosome-associated membrane glycoprotein 3 (LAMP3) is a type I transmembrane protein of the LAMP protein family with a cell-type-specific expression in alveolar type II cells in mice and hitherto unknown function. In type II pneumocytes, LAMP3 is localized in lamellar bodies, secretory organelles releasing pulmonary surfactant into the extracellular space to lower surface tension at the air/liquid interface. The physiological function of LAMP3, however, remains enigmatic. We generated Lamp3 knockout mice by CRISPR/Cas9. LAMP3 deficient mice are viable with an average life span and display regular lung function under basal conditions. The levels of a major hydrophobic protein component of pulmonary surfactant, SP-C, are strongly increased in the lung of Lamp3 knockout mice, and the lipid composition of the bronchoalveolar lavage shows mild but significant changes, resulting in alterations in surfactant functionality. In ovalbumin-induced experimental allergic asthma, the changes in lipid composition are aggravated, and LAMP3-deficient mice exert an increased airway resistance. Our data suggest a critical role of LAMP3 in the regulation of pulmonary surfactant homeostasis and normal lung function.
- MeSH
- bronchiální astma chemicky indukované genetika metabolismus patologie MeSH
- bronchoalveolární lavážní tekutina MeSH
- editace genu metody MeSH
- homeostáza genetika MeSH
- lipidomika MeSH
- modely nemocí na zvířatech MeSH
- myši knockoutované MeSH
- myši MeSH
- ovalbumin aplikace a dávkování MeSH
- plíce metabolismus patologie MeSH
- plicní alveoly metabolismus patologie MeSH
- plicní surfaktanty metabolismus MeSH
- pneumocyty metabolismus patologie MeSH
- protein - isoformy genetika metabolismus MeSH
- protein C asociovaný s plicním surfaktantem genetika metabolismus MeSH
- protein DC-LAMP nedostatek genetika MeSH
- regulace genové exprese MeSH
- respirační funkční testy MeSH
- rezistence dýchacích cest MeSH
- signální transdukce MeSH
- zvířata MeSH
- Check Tag
- myši MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Sarkoidóza je multisystémové granulomatózní onemocnění neznámé etiologie, které obvykle postihuje jedince středního a staršího věku, nejčastěji ženy starší 40 let. Příznaky, se kterými se může setkat lékař prvního kontaktu, mohou být velmi nespecifické. Nejtypičtější potíže se objevují u akutní formy nemoci, tzv. Löfgrenova syndromu s typickou bilaterální hilovou lymfadenopatií zjišťovanou na skiagramu hrudníku, s negativním tuberkulinovým testem, s výsevem nodózního erytému na bércích, často provázeném oboustrannou artritidou talokrurálního skloubení. Löfgrenův syndrom má obvykle dobrou prognózu, ve většině případů nastává spontánní remise onemocnění. Při podezření na toto onemocnění je indikováno doplnění skiagramu hrudníku a při patologickém nálezu je vhodné odeslat nemocného k pneumologovi.
Sarcoidosis is a multisystem granulomatous disease of unknown aetiology that typically affects middle-aged and elderly individuals, most commonly women over 40 years of age. The symptoms that a primary care physician may encounter can be very non-specific. The most characteristic complaints occur in the acute form of the disease, Löfgren syndrome, presenting with a typical bilateral hilar lymphadenopathy detected on chest skiagram, a negative tuberculin test, and an eruption of erythema nodosum in the crural region, often accompanied by bilateral arthritis of the talocrural joint. Löfgren syndrome is usually associated with a good prognosis, with most cases developing spontaneous remission of the disease. When this disease is suspected, an additional chest skiagram is indicated and, in the case of a pathological finding, it is advisable to refer the patient to a pulmonologist.
- MeSH
- biopsie metody MeSH
- bronchoalveolární laváž MeSH
- bronchoalveolární lavážní tekutina cytologie MeSH
- diagnostické techniky dýchacího ústrojí MeSH
- glukokortikoidy aplikace a dávkování MeSH
- klinické laboratorní techniky MeSH
- krevní obraz MeSH
- lidé MeSH
- počítačová rentgenová tomografie MeSH
- sarkoidóza * diagnostické zobrazování farmakoterapie klasifikace MeSH
- stupeň závažnosti nemoci MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
- MeSH
- bronchoalveolární laváž metody MeSH
- bronchoalveolární lavážní tekutina chemie MeSH
- bronchoskopie dějiny klasifikace metody MeSH
- chirurgie plic dějiny klasifikace metody MeSH
- diagnostické techniky dýchacího ústrojí * klasifikace MeSH
- endoskopie dějiny klasifikace metody MeSH
- lidé MeSH
- plicní nemoci diagnóza terapie MeSH
- stenty klasifikace MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
BACKGROUND: Bronchial epithelial reticular basement membrane (RBM) thickening occurs in diseases with both eosinophilic (allergic bronchial asthma [BA]) and neutrophilic (cystic fibrosis [CF] and primary ciliary dyskinesia [PCD]) chronic airway inflammation; however, the lung function and airway remodeling relation remains unclear. The aim of this study was to test whether ventilation inhomogeneity is related to RBM thickening. METHODS: Multiple breath washout test, endobronchial biopsy, and BAL were performed in 24 children with CF, 11 with PCD, 15 with BA, and in 19 control subjects. Lung clearance index at 2.5% (1/40th) of starting nitrogen concentration (LCI2.5), RBM thickness, and lavage fluid cytology were quantified; their mutual associations were studied by using Spearman rank correlations (r). RESULTS: In asthma, ventilation inhomogeneity (mean ± SD) was mild (LCI2.5, 9.3 ± 1.4 vs 7.9 ± 0.9 in control subjects; P = .0391), and the RBM thickened (5.26 ± 0.98 μm vs 3.12 ± 0.62 μm in control subjects; P < .0001). No relation between RBM thickness and ventilation inhomogeneity or lavage cytology was found. In CF and PCD, RBM thickness was similar to that in asthma (4.54 ± 0.66 μm and 5.27 ± 1.11 μm, respectively), but ventilation inhomogeneity was significantly higher (LCI2.5, 12.5 ± 2.4 and 11.8 ± 2.5). Both in CF and PCD, RBM thickness correlated with LCI2.5 (r = 0.594, P = .015; r = 0.821, P = .023). In PCD only, RBM thickness was also related to the number of neutrophils in lavage fluid (r = 0.821; P = .023). CONCLUSIONS: Lung function impairment in relation to RBM thickness was milder in BA than in CF and PCD. In asthma, ventilation inhomogeneity did not correlate with RBM thickness, whereas it did in CF and PCD. This outcome suggests a different structure-function relation in these diseases.
- MeSH
- bazální membrána patologie MeSH
- biopsie metody MeSH
- bronchiální astma * patologie patofyziologie MeSH
- bronchoalveolární lavážní tekutina MeSH
- bronchoskopie MeSH
- bronchy * patologie patofyziologie MeSH
- cystická fibróza * patologie patofyziologie MeSH
- dítě MeSH
- korelace dat MeSH
- lidé MeSH
- mukociliární clearance MeSH
- neutrofily patologie MeSH
- plicní ventilace fyziologie MeSH
- poruchy ciliární motility * patologie patofyziologie MeSH
- remodelace dýchacích cest MeSH
- respirační funkční testy metody MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Sarkoidóza je multisystémové granulomatózní onemocnění neznámé etiologie, které obvykle postihuje jedince středního a staršího věku, nejčastěji ženy starší 40 let. Příznaky, se kterými se může setkat lékař prvního kontaktu, mohou být velmi nespecifické. Nejtypičtější potíže se objevují u akutní formy nemoci, tzv. Löfgrenova syndromu s typickou bilaterální hilovou lymfadenopatií zjišťovanou na skiagramu hrudníku, s negativním tuberkulinovým testem, s výsevem nodózního erytému na bércích, často provázeném oboustrannou artritidou talokrurálního skloubení. Löfgrenův syndrom má obvykle dobrou prognózu, ve většině případů nastává spontánní remise onemocnění. Při podezření na toto onemocnění je indikováno doplnění skiagramu hrudníku a při patologickém nálezu je vhodné odeslat nemocného k pneumologovi.
Sarcoidosis is a multisystem granulomatous disease of unknown aetiology that typically affects middle-aged and elderly individuals, most commonly women over 40 years of age. The symptoms that a primary care physician may encounter can be very non-specific. The most characteristic complaints occur in the acute form of the disease, Löfgren syndrome, presenting with a typical bilateral hilar lymphadenopathy detected on chest skiagram, a negative tuberculin test, and an eruption of erythema nodosum in the crural region, often accompanied by bilateral arthritis of the talocrural joint. Löfgren syndrome is usually associated with a good prognosis, with most cases developing spontaneous remission of the disease. When this disease is suspected, an additional chest skiagram is indicated and, in the case of a pathological finding, it is advisable to refer the patient to a pulmonologist.
- Klíčová slova
- skiagram hrudníku,
- MeSH
- biopsie metody MeSH
- bronchoalveolární laváž MeSH
- bronchoalveolární lavážní tekutina cytologie MeSH
- diagnostické techniky dýchacího ústrojí MeSH
- glukokortikoidy aplikace a dávkování MeSH
- klinické laboratorní techniky MeSH
- krevní obraz MeSH
- lidé MeSH
- počítačová rentgenová tomografie MeSH
- sarkoidóza * diagnostické zobrazování farmakoterapie klasifikace MeSH
- stupeň závažnosti nemoci MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
