BACKGROUND: Serum neurofilament light chain (S NfL) is a non-specific marker of neuronal damage, including Alzheimer's disease (AD). We aimed to verify the reference interval (RI) of serum NfL using a highly sensitive ELISA, and to estimate the optimal cut-off value for neuronal damage. Our second objective was to compare NfL in cerebrospinal fluid (CSF) and serum (S) with the routine neurodegeneration biomarkers used in AD, and to assess their concentrations relative to the degree of cognitive deficit. METHODS: Samples from 124 healthy volunteers were used to estimate the S NfL RI. For the comparison study, we used CSF and S samples from 112 patients with cognitive disorders. Cognitive functions were assessed using the mini-mental state examination. ELISA assays were used to determine the CSF and S NfL levels, CSF β-amyloid peptide42 (Aβ42), CSF β-amyloid peptide40 (Aβ40), CSF total tau protein (tTau), CSF phosphorylated tau protein (pTau), and CSF alpha-synuclein (αS). RESULTS: The estimated RI of S NfL were 2.25-9.19 ng.L-1. The cut-off value of S NfL for assessing the degree of neuronal impairment was 10.5 ng.L-1. We found a moderate statistically significant correlation between S NfL and CSF Aβ42 in the group with movement disorders, without dementia (rs = 0.631; p = 0.016); between S NfL and CSF Aβ40 in the group with movement disorder plus dementia (rs = -0.750; p = 0.052); between S NfL and CSF tTau in the control group (rs = 0.689; p = 0.009); and between S NfL and CSF pTau in the control group (rs = 0.749; p = 0.003). The non-parametric Kruskal-Wallis test revealed statistically significant differences between S NfL, CSF NfL, CSF Aβ42, CSF tTau, and CSF pTau and diagnosis within groups. The highest kappa coefficients were found between the concentrations of S NfL and CSF NfL (κ = 0.480) and between CSF NfL and CSF tTau (κ = 0.351). CONCLUSION: Our results suggested that NfL and tTau in CSF of patients with cognitive decline could be replaced by the less-invasive determination of S NfL using a highly sensitive ELISA method. S NfL reflected the severity of cognitive deficits assessed by mini-mental state examination (MMSE). However, S NfL is not specific to AD and does not appear to be a suitable biomarker for early diagnosis of AD.
- Publikační typ
- časopisecké články MeSH
BACKGROUND AND OBJECTIVES: To evaluate the diagnostic performance of the measles-rubella-zoster reaction (MRZR) in a large real-world multiple sclerosis (MS) cohort. Second, to compare MRZR with the determination of oligoclonal IgG bands (OCB), oligoclonal kappa free light chain bands (oKFLC), and the KFLC index. METHODS: A single-center retrospective study was conducted at the University Hospital Ostrava (Czech Republic). Patients were eligible if aged ≥18 years with a determined clinical diagnosis. IgG antibodies against measles (M), rubella (R), and varicella zoster (Z) viruses were determined in paired CSF and serum using ELISA and MRZR indicated as positive if at least two components had an antibody index >1.4. OCB and oKFLC were detected by means of isoelectric focusing, and KFLC CSF and serum concentrations for calculation of the KFLC index were determined immunochemically. RESULTS: A total of 1,751 patients were included in the analyzed data set, which comprised 379 MS patients and 1,372 non-MS controls. The frequency of positive MRZR was higher in MS than in non-MS cases (MS 32.2 % vs non-MS 2.8 %; p < 0.001). This corresponded to a specificity of 97.2 % (95 % CI 96.1-98.0) and sensitivity of 32.2 % (95 % CI 27.5-37.2) and overall accuracy of 83.1 % (95 % CI 81.3-84.8). In comparison, the highest sensitivity of 95.6% (95 % CI 93.0-97.5) was for OCB with specificity of 86.9 % (95 % CI 84.9-88.7), followed by oKFLC with sensitivity and specificity of 94.7 % (95 % CI 91.5-96.9) and 78.4% (95 % CI 75.7-80.8), respectively, and the KFLC index with sensitivity of 92.5 % (95 % CI 86.6-96.3) and specificity of 93.5 % (95 % CI 90.5-95.9). DISCUSSION: MRZR remains a very specific test for the diagnosis of MS but has low sensitivity, which disallows its independent use. In contrast, OCB showed the highest sensitivity and thus remains the gold standard for the diagnosis of MS.
- MeSH
- biologické markery MeSH
- dospělí MeSH
- herpes zoster * MeSH
- imunoglobulin G MeSH
- imunoglobuliny - kappa-řetězce MeSH
- lidé MeSH
- mladiství MeSH
- oligoklonální proužky MeSH
- retrospektivní studie MeSH
- roztroušená skleróza * MeSH
- spalničky * diagnóza MeSH
- zarděnky * diagnóza MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mladiství MeSH
- Publikační typ
- časopisecké články MeSH
AIMS: This study compared the results obtained by basic immunophenotyping of cerebrospinal fluid (CSF) cells by flow cytometry (FC) to the results of conventional cytology and evaluated the possibility of detailed analyses of CSF B-cell subpopulations. METHODS: Samples from 42 patients were examined by conventional cytology (native and/or pre-centrifuged CSF) and FC. The results from 15 patients without evidence of organic neurological disease were used to estimate reference ranges. RESULTS: Pre-centrifugated CSF had significantly higher cell yield on the cytologic slide, but cell subpopulation percentages were altered; the percentage of lymphocytes was significantly higher and monocytes significantly lower compared to both native CSF slides and FC. The percentage of granulocytes was higher in FC compared to cytology. For leukocyte count, the following reference ranges were estimated for Fuchs-Rosenthal chamber (FR) counting and FC, respectively: leukocytes ≤4.7/μL and ≤2.5/μL, lymphocytes ≤4.1/μL and ≤1.8/μL, monocytes ≤1.2/μL and ≤0.9/μL, and granulocytes 0/μL and ≤0.2/μL. The following reference ranges were estimated for basic subpopulations: T-lymphocytes 84.1-100%, B lymphocytes 0.0-1.5%, NK cells 0.0-6.3%, NKT cells 0-9.5%, and CD3+CD4+/CD3+CD8+ 0.8-4.9. Using a volume of 1.2-2.4 mL, the number of B lymphocytes was too low (<20) in samples with ≤2.7 cells/μL in the FR. CONCLUSIONS: Even normal CSF samples are amenable to basic mononuclear cell subpopulation analysis by FC. However, analysis of the B-cell subpopulations requires either a larger sample volume or selection of samples with ≥ 3 cells/μL.
- MeSH
- imunofenotypizace MeSH
- leukocyty * MeSH
- lidé MeSH
- lymfocyty * MeSH
- mozkomíšní mok MeSH
- průtoková cytometrie metody MeSH
- T-lymfocyty MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
Úvod: Vzhledem k stárnutí populace a prodlužování střední délky života se v budoucnu očekává nárůst prevalence demence a onemocnění na podkladě aterosklerózy. Obě tyto závažné diagnózy mají řadu společných rizikových faktorů. Navíc ateroskleróza karotid je považována za prediktor demence. Vzájemný vztah ovšem není stále dostatečně objasněn. Hlavním cílem předkládané práce bylo popsat souvislost mezi vybranými rizikovými faktory aterosklerózy a demence. Metodika: K analýze rizikových faktorů byl použit soubor 1337 jedinců z projektu AZV MZ ČR „Možný vliv aterosklerózy na rozvoj demence“, který je koncipován jako epidemiologická studie případů a kontrol. Subjekty studiebyly rozděleny do čtyř výzkumných skupin podle výsledků klinického vyšetření na přítomnost aterosklerózy a demence. Výsledky: Mezi všemi výzkumnými skupinami byly zjištěny statisticky významné rozdíly ve výskytu rizikových faktorů, zejména mezi jedinci s demencí, ale bez aterosklerózy a jedinci s aterosklerózou, ale bez demence. Jedinci s demencí a bez aterosklerózy mají statistický významně častěji základní vzdělání (p < 0,001) a jsou méně často v manželském svazku (p < 0,001). Jedinci s demencí (ať už v kombinaci s aterosklerózou, nebo bez) statisticky významně méně častovykonávali pohybovou aktivitu (p < 0,001) a méně často se věnovali aktivitám, jako je čtení a luštění křížovek (p <0,001). Konkrétně u čtení a jedinců s demencí a aterosklerózou bylo zjištěno statisticky významně vyšší riziko vznikuonemocnění (OR = 1,72; IS 1,02–2,88; p = 0,041) oproti kontrolní skupině. Naopak jedinci s aterosklerózou a bez demence statisticky významně častěji kouří (p < 0,001), mají hypertenzi (p < 0,001), vysoký cholesterol (p < 0,001) a diabetes mellitus (p = 0,018). Závěr: Demence i ateroskleróza jsou velmi závažná onemocnění, podrobná znalost rizikových faktorů u těchto nemocí je nezbytná. Mnohé z těchto rizikových faktorů jsou společné pro obě diagnózy a pochopení vzájemného vztahu mezi nimi může pomoci v prevenci a včasném odhalení demence.
Introduction: Due to the aging of the population and the increase in life expectancy, an increase in the prevalence of dementia and atherosclerosis-based diseases is expected in the future. Both of these severe diagnoses have severalcommon risk factors. In addition, carotid atherosclerosis is considered as a predictor of dementia. However, the mutual relationship is still not sufficiently clarified. The main goal of the presented work was to describe the connectionbetween selected risk factors of atherosclerosis and dementia. Methods: A set of 1,337 individuals from the AZV MZ CR project "Possible influence of atherosclerosis on the development of dementia", designed as an epidemiological study of cases and controls, was used to analyze risk factors. The study subjects were divided into four research groups according to the clinical examination results for the presence of atherosclerosis and dementia. Results: Statistically significant differences in the occurrence of risk factors were found between all research groups, especially between individuals with dementia but without atherosclerosis and individuals with atherosclerosis but without dementia. Individuals with dementia and without atherosclerosis have statistically significantly more often primary education (p < 0.001) and are less often married (p < 0.001). Individualswith dementia (whether combined with atherosclerosis or without) were statistically significantly less likely to engage inphysical activity (p < 0.001) and less often engaged in activities such as reading and crossword (p < 0.001). Specifically, reading and individuals with dementia and atherosclerosis were found to have a statistically significantly higher risk of developing the disease (OR = 1.72; IS 1.02–2.88; p = 0.041) compared to the control group. On the contrary, individuals with atherosclerosis and without dementia are statistically significantly more likely to smoke (p < 0.001), have hypertension (p < 0.001), high cholesterol (p < 0.001), and diabetes mellitus (p = 0.018). Conclusion: Dementia and atherosclerosis are very serious diseases, and detailed knowledge of the risk factors for these diseases is essential. Many of these risk factors are common to both diagnoses and understanding the interrelationship betweenthem can help in the prevention and early detection of dementia.
- MeSH
- ateroskleróza * diagnóza MeSH
- demence * diagnóza prevence a kontrola MeSH
- lidé MeSH
- průzkumy a dotazníky MeSH
- rizikové faktory MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
AIM: The aim of this study was to identify whether NfL and CXCL13 cerebrospinal fluid (CSF) concentrations at diagnostic lumbar puncture can predict the course of multiple sclerosis (MS) in terms of relapses, higher expanded disability status scale (EDSS) and magnetic resonance imaging (MRI) activity. METHODS: We conducted a single-centre prospective observational cohort study at the MS center, University Hospital Ostrava, Czech Republic. CSF NfL (cNfL) and CXCL13 concentrations were examined (ELISA method) in patients with clinically isolated syndrome (CIS) and relapsing-remitting MS (RRMS) at the time of diagnostic lumbar puncture. RESULTS: A total of 44 patients with CIS or early RRMS were enrolled, 31 (70.5%) of whom were women. The median age at the time of CSF sampling was 31.21 years (IQR 25.43-39.32), and the follow-up period was 54.6 months (IQR 44.03-59.48). In the simple and multiple logistic regression models, CXCL13 levels did not predict relapses, MRI activity or EDSS > 2.5. Similarly, cNfL concentrations did not predict relapses or MRI activity in either model. In the multiple regression, higher cNfL levels were associated with reaching EDSS > 2.5 (odds ratio [OR] 1.002, 95% confidence interval [CI] 1.000 to 1.003). CONCLUSIONS: Our data did not confirm cNfL and/or CXCL13 CSF levels were predictive factors for disease activity such as relapses and MRI activity at the time of diagnostic lumbar puncture in patients with RRMS. While cNfL CSF levels predicted higher disability only after adjustment for other known risk factors, elevated CSF CXCL13 did not predict higher disability at all.
- MeSH
- biologické markery mozkomíšní mok MeSH
- chemokin CXCL13 MeSH
- dospělí MeSH
- intermediární filamenta MeSH
- lidé MeSH
- progrese nemoci MeSH
- prospektivní studie MeSH
- recidiva MeSH
- relabující-remitující roztroušená skleróza * diagnostické zobrazování mozkomíšní mok MeSH
- roztroušená skleróza * diagnóza mozkomíšní mok MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- pozorovací studie MeSH
- Publikační typ
- abstrakt z konference MeSH
MicroRNA jsou krátké (18-24 nukleotidů) nekódující, velmi stabilní molekuly RNA, jejichž funkce zahrnuje vše od regulace klíčových signálních drah na molekulární úrovni až po rychlou buněčnou odpověď organismu na patologické stavy. microRNA jsou stabilní v tělních tekutinách a představují velmi perspektivní diagnostický cíl pro včasnou identifikaci široké škály onemocnění. V tomto souhrnném článku je uveden přehled kandidátních diagnostických miRNA vhodných pro využití v diagnostice onkologické kardiotoxicity.
MicroRNAs are very stable short (18-24) noncoding RNAs. The function of miRNA molecules includes everything from the regulation of key signalling pathways at the molecular level to the rapid cellular response to pathological conditions. miRNAs are stable in body fluids and represent a very promising diagnostic targets for the early identification of a wide range of diseases. This summary article provides an overview of candidate diagnostic miRNAs suitable for use in the diagnosis of oncological cardiotoxicity.
Předkládaná kazuistika prezentuje 23letou slečnu, která byla přijata na Neurologickou kliniku Fakultní nemocnice Ostrava k došetření progredující centrální kvadruparézy a nálezu léze protáhlého vřetenovitého tvaru s výrazným postižením šedé hmoty míšní krční a proximální hrudní části míchy na T2 vážených obrazech na magnetické rezonanci krční a hrudní míchy. V rámci diferenciální diagnostiky je nutné u pacientů s nálezem hypersignální léze na T2 vážených obrazech magnetické rezonance míchy myslet na diagnózu neuromyelitis optica a stanovit v séru protilátky proti akvaporinům a myelinovému oligodendrocytárnímu glykoproteinu, aby tito pacienti nemuseli podstupovat riziko operačního zákroku při mylně stanovené diagnóze míšního nádoru.
Our case report presents a 23-year-old young female who was admitted to the Department of Neurology at the University Hospital Ostrava for further investigation of progressive central quadruparesis and a finding of an elongated spindle-shaped lesion with affection of the spinal gray matter in the cervical and rostral thoracic spinal segments on a T2 weighted magnetic resonance imaging. In a differential diagnosis process of a patient with an extensive spinal cord hypersignal lesion on T2 weighted images it is important to take into our diagnostic considerations a diagnosis from the neuromyelitis optica spectrum disorders, and both the anti-aquaporin and anti-myelin oligodendrocyte glycoprotein antibodies should be tested from the serum, so that these patients do not have to undergo a spinal cord surgery due to a misdiagnosis of spinal cord tumour.
BACKGROUND: Intrathecal IgM synthesis has been identified as an adverse prognostic factor in patients with multiple sclerosis (MS); however, some studies have not confirmed this association. The objective of this study was to evaluate the clinical utility of intrathecal IgM synthesis for prediction of disease activity and disability in patients after the first demyelinating event of MS. METHODS: We conducted a single-centre prospective observational cohort study at the Department of Neurology, University Hospital Ostrava, Czech Republic. Intrathecal IgM synthesis was demonstrated by the presence of cerebrospinal fluid-restricted oligoclonal IgM bands and calculated using the Reiber, Auer, and Öhman formula and IgM index. RESULTS: A total of 61 patients with a clinically isolated syndrome or early relapsing-remitting MS were enrolled into the analysis of which 37 (61 %) were women. The median age at the disease onset was 32 years (interquartile range [IQR] 25 - 42), and the median disease duration was 2.8 years (IQR 2.4 - 3.5). Thirty-eight (62 %) patients experienced a second relapse of MS with a median of 312 days (IQR 192 - 424), and 29 (47.5 %) developed magnetic resonance imaging (MRI) activity during the follow-up. Intrathecal IgM synthesis did not affect the risk of a second relapse or evidence of MRI activity in univariate and multivariate Cox regression analysis. There was no significant difference in disability using the Expanded Disability Status Scale and progression index in patients with or without intrathecal IgM synthesis. CONCLUSION: This prospective cohort study did not demonstrate that intrathecal IgM synthesis is a risk factor for a second relapse or MRI activity. It was not associated with higher disability in patients after the first demyelinating event.
Sérový amyloid A (SAA) je jedním z proteinů akutní fáze zánětu. Jeho koncentrace v organismu stoupá jako odpověď na různé podněty, ať už infekčního nebo neinfekčního původu. SAA je apolipoprotein, který interaguje s HDL, podporuje hromadění leukocytů v místě zánětu, adhezi trombocytů a podílí se na odstraňování poškozených buněčných membrán. SAA je ve vodě nerozpustný stejně jako jeho prekursorový protein, který vytváří depozita amyloidu A v různých orgánech. Ačkoliv hodnota SAA po odeznění reakce klesne zpět na minimální hodnotu, depozita amyloidu A ve tkáních již odstraněna organismem nejsou. Hromadění amyloidu ve tkáních má za následek jejich poškození, omezení funkce, v nejhorších případech vede až k jejich selhání. Vytváření depozit ve tkáních orgánů je základem chorob zvaných amyloidóza.
Serum amyloid A (SAA) is one of the acute phase reactants. Its concentration in the organism rises in response to various stimuli, whether of infectious or non-infectious origin. SAA is an apolipoprotein that interacts with HDL, promotes the accumulation of leukocytes at the site of inflammation and the adhesion of platelets and participates in the removal of damaged cell membranes. SAA is water-insoluble, as is its precursor protein, which forms amyloid A deposits in various organs. Although the SAA value drops back to the minimum value after the reaction subsides, the organism no longer removes the amyloid A deposits from the tissues. Accumulation of amyloid in tissues results in their damage and limitation of function, and in the worst cases, leads to their failure. The formation of deposits in the tissues of organs is the basis of disease called amyloidosis.
