- MeSH
- alveolární makrofágy fyziologie klasifikace MeSH
- dýchací soustava patofyziologie MeSH
- infekce dýchací soustavy * klasifikace patofyziologie patologie MeSH
- lidé MeSH
- mikrobiota MeSH
- plicní nemoci klasifikace patologie MeSH
- pneumonie klasifikace patologie MeSH
- stárnutí fyziologie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
- Publikační typ
- abstrakt z konference MeSH
Lung malignancies have a substantial impact on cancer incidence and mortality worldwide. Even though many factors involved in the development of the disease are known, many questions remain unanswered. Previous studies suggest that the intestinal microbiota may have a role in developing malignant diseases. According to some findings, the microbiota has proven to be a key modulator of carcinogenic processes and the immune response against cancer cells, potentially influencing the effectiveness of immunotherapy. In our study, we characterized culturable microorganisms associated with non-small cell lung cancer (NSCLC) that can be recovered from rectal swabs and mouthwash. In addition, we also explored differences in the culturable microbiota with two main types of NSCLC - adenocarcinoma (ADC) and squamous cell carcinoma (SCC). With 141 patients included in the study (86 ADC and 55 SCC cases), a significant difference was observed between the two types in seven bacterial species (Collinsella, Corynebacterium, Klebsiella, Lactobacillus, Neisseria, Rothia, and Streptococcus), including the site of origin. The relationship between microbial dysbiosis and lung cancer is poorly understood; future research could shed light on the links between gut microbiota and lung cancer development.
- MeSH
- adenokarcinom * MeSH
- lidé MeSH
- mikrobiota * MeSH
- nádory plic * mikrobiologie patologie MeSH
- nemalobuněčný karcinom plic * mikrobiologie patologie MeSH
- spinocelulární karcinom * MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
miRNA expression in triple-negative breast cancers (TNBC) has mainly been studied from a methodological viewpoint. However, it has not been considered that miRNA expression profile may be associated with a specific morphological entity inside every tumor. The verification of this hypothesis on a set of 25 TNBCs was the subject of our previous work, where we confirmed specific expression of the studied miRNAs in 82 samples of different morphologies including inflammatory infiltrate, spindle cell, clear cell, and metastases after RNA extraction and purification as well as microchip and biostatistical analysis. In the current work, we demonstrate a low suitability of in situ hybridization method for miRNA detection compared to RT-qPCR, and in detail discuss the biological role of 8 miRNAs with the most significant changes of expression.
- MeSH
- lidé MeSH
- mikro RNA * genetika metabolismus MeSH
- triple-negativní karcinom prsu * genetika patologie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
AIMS: The aim of this study was to compare the expression profile of selected DNA methyltransferases and global DNA methylation status in patients with different phases of multiple myeloma (MM) . For the analysis, different cellular populations including unsorted myeloma cells and a set of plasma cells purified by relevant antibodies were used. Consequently, laboratory data were compared to patients' clinical data. PATIENTS AND METHODS: For the analysis, unsorted bone marrow cell population of 44 MM patients (30 newly diagnosed, 9 relapsed and 5 patients in remission) and a set of 8 patients' samples of sorted plasma cells were used. We used commercially available RNA isolated from BM of 3 healthy individuals as control samples. Expression analysis of three DNA methyltransferases - DNMT1, DNMT3A, and DNMT3B was performed by quantitative RT-PCR and the patient global DNA methylation profiles were detected by colorimetric assay. RESULTS: Unchanged DNMT1 expression was detected in the selected cohort of patients. Normalized DNMT3A gene expression was globally higher in comparison with controls in unsorted and sorted cell populations. Low (0.08-1.81%) global DNA methylation status in unsorted samples of multiple myeloma patients did not correlate either with expression profiles of monitored DNA methyltransferases or with the stages of MM based on Durie-Salmon and International Staging System. CONCLUSION: This is the first comparative study between DNA methyltransferases expression profiles and global DNA methylation status in different phases of multiple myeloma patients. No significant correlation between the level of global methylation and the clinical stage of the unsorted cell population of patients with multiple myeloma was registered. Overexpression of the DNMT3A gene occurred in both sorted and unsorted cell populations of patients with multiple myeloma. This fact highlights the DNMT3A as a potential marker of multiple myeloma tumor progression. Moreover, we demonstrated comparable results in the expression of DNA methyltransferases in both sorted and unsorted cell populations. This is a promising result from the methodical point of view because when compared to samples of unsorted multiple myeloma cells, samples of sorted cells bring reduction of the number of possible analyses performed.
- MeSH
- DNA methyltransferasa 3A MeSH
- DNA MeSH
- lidé MeSH
- metylace DNA * MeSH
- mnohočetný myelom * genetika MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- MeSH
- fenotyp MeSH
- lidé MeSH
- nádory prsu u mužů genetika klasifikace MeSH
- nádory prsu * genetika klasifikace MeSH
- sekvenování celého genomu MeSH
- stanovení celkové genové exprese MeSH
- transkriptom MeSH
- triple-negativní karcinom prsu genetika klasifikace MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- přehledy MeSH
- MeSH
- androgenní receptory genetika MeSH
- lidé MeSH
- oprava DNA genetika MeSH
- proteiny kontrolních bodů imunitní reakce MeSH
- proteiny regulující apoptózu genetika MeSH
- receptory růstových faktorů genetika MeSH
- regulace genové exprese u nádorů genetika MeSH
- supresorové geny MeSH
- triple-negativní karcinom prsu * genetika MeSH
- Check Tag
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- přehledy MeSH
AIMS: The detection of odontogenic keratocysts (OKC) in the oral cavity is one of the main criteria for the clinical manifestation of Gorlin-Goltz syndrome (Nevoid Basal Cell Carcinoma Syndrome - NBCCS). From a clinical point of view, we distinguish between "syndromic" and "sporadic" OKC. Syndromic cysts, often multifocal, may be an accidental finding on X-ray examination. They can manifest gradually depending on the development of permanent dentition. Sporadic cysts are rather solitary lesions with clinical manifestation in adulthood. METHODS: Mutations in the PTCH1 gene are thought to be the cause of the clinical manifestation of NBCCS. These abnormalities can be transmitted from one generation to another and lead to a familial occurrence of the disease. In 35-50% of cases, these are a newly arising mutations. It is necessary to take into account the typical manifestations which in the next generation begin at a younger age and the disease usually has a more serious course. RESULTS: We found a familial manifestation of NBCCS in two pairs of patients (mother and daughter and two siblings). Odontogenic keratocysts and cutaneous basal cell carcinomas were diagnosed and genetic testing revealed mutations in the PTCH 1 gene in all four individuals. CONCLUSIONS: With regard to the possibility of familial occurrence of NBCCS, it is necessary to pay increased attention to family history and, if necessary, to ensure clinical and genetic examination of parents and other family members. Patients of childbearing potential with evidence of NBCCS should be informed of the increased likelihood of the disease in the offspring.
- MeSH
- dospělí MeSH
- lidé MeSH
- mutace MeSH
- odontogenní cysty * diagnostické zobrazování genetika MeSH
- syndrom bazocelulárního névu * komplikace diagnóza genetika MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- Publikační typ
- kazuistiky MeSH
