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  1. Article: Bone Metabolism of the Patient with a Malignant Melanoma during the Entry Examination and the Check-up of Whole-body Bone Scintigraphy.

    Weissensteiner, Jaroslav / Babušíková, Eva

    Prague medical report

    2016  Volume 117, Issue 2-3, Page(s) 129–134

    Abstract: Malignant melanoma is a malignancy located predominantly in the skin and the incidence of melanoma increases. We compared the markers of bone metabolism - osteocalcin (OC), beta-carboxyterminal cross-linked telopeptide of type I collagen (β-CrossLaps, β- ... ...

    Abstract Malignant melanoma is a malignancy located predominantly in the skin and the incidence of melanoma increases. We compared the markers of bone metabolism - osteocalcin (OC), beta-carboxyterminal cross-linked telopeptide of type I collagen (β-CrossLaps, β-CTx) and tumour marker - human epididymis protein 4 (HE4) in the serum with finding during the entry examination and the check-up of whole-body bone scintigraphy of the patient with a malignant melanoma. Serum concentrations of OC, β-CTx, HE4 were determined in 1 patient (female, age 64 years) with malignant melanoma and correlated with the presence of equivocal bone metastases detected by whole-body bone scintigraphy (the entry examination and check-up after 6 months). Concentrations of bone metabolism markers decreased during six months and we observed progress in bone metastases. The change of the markers levels during the entry examination and the check-up of the whole-body bone scintigraphy with equivocal finding of bone metastases could be a sign of a possible initiating progression of malignant melanoma despite a clinically negative finding that does not prove the progression of the disease.
    MeSH term(s) Biomarkers, Tumor/blood ; Bone Neoplasms/blood ; Bone Neoplasms/diagnostic imaging ; Bone Neoplasms/secondary ; Collagen Type I/blood ; Female ; Humans ; Melanoma/blood ; Melanoma/pathology ; Middle Aged ; Osteocalcin/blood ; Peptides/blood ; Radionuclide Imaging ; Skin Neoplasms/blood ; Skin Neoplasms/pathology
    Chemical Substances Biomarkers, Tumor ; Collagen Type I ; Peptides ; collagen type I trimeric cross-linked peptide ; Osteocalcin (104982-03-8)
    Language English
    Publishing date 2016
    Publishing country Czech Republic
    Document type Case Reports ; Journal Article
    ZDB-ID 2148569-0
    ISSN 1214-6994
    ISSN 1214-6994
    DOI 10.14712/23362936.2016.14
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  2. Article: The value of human epididymis protein 4 (HE4) as a serum tumor marker for accurate bone metastases finding by whole-body bone scintigraphy in lung cancer patients.

    Weissensteiner, J / Babusikova, E

    Neoplasma

    2019  Volume 66, Issue 6, Page(s) 1024–1030

    Abstract: The aim of our study was to correlate the serum concentration of human epididymis protein 4 (HE4) in lung cancer patients with the bone metastases detected by whole-body bone scintigraphy. The serum concentrations of HE4 were determined by ... ...

    Abstract The aim of our study was to correlate the serum concentration of human epididymis protein 4 (HE4) in lung cancer patients with the bone metastases detected by whole-body bone scintigraphy. The serum concentrations of HE4 were determined by electrochemiluminescence immunoassay method in 60 patients with lung cancer and in 10 persons without malignant disease (control group). All participants were examined by whole-body bone scintigraphy with hybrid gamma camera of type BrightView XCT. We found bone metastases in 25.0% of patients by whole-body bone scintigraphy and probable bone metastases in 18.3% of patients. We did not observe bone metastases in 56.7% of patients and in nobody from control group. We observed that 73.33% patients with bone metastases had more than 3 bone metastasis deposits. Patients had significantly increased concentration of HE4 (p < 0.0001). All three subgroups of patients (bone metastases, probable bone metastases, no evidence of bone metastases) had significantly increased concentration of HE4 compared to controls. The highest concentration of HE4 had 9 patients with small-cell lung cancer of whose 4 patients had bone metastases, 4 patients had probable bone metastases and one patient was with no evidence of bone metastases. We found that HE4 has a discriminatory ability to differentiate groups of patients and healthy controls, as well as within scaffold scintigraphy in patients with lung cancer (p = 0.0002). The serum concentration of human epididymis protein 4 was significantly increased in patients with lung cancer in comparison with persons of control group. A quarter of lung cancer patients had identified bone metastases by whole-body bone scintigraphy and approximately 20% of patients had probable bone metastases. The increasing serum concentrations of human epididymis protein 4 can have importance in the diagnosis of bone metastases in patients with lung cancer, in particular in small-cell lung cancer.
    MeSH term(s) Biomarkers, Tumor/blood ; Biomarkers, Tumor/standards ; Bone Neoplasms/blood ; Bone Neoplasms/diagnosis ; Bone Neoplasms/diagnostic imaging ; Bone Neoplasms/secondary ; Humans ; Lung Neoplasms/pathology ; Proteins/analysis ; Proteins/standards ; Radionuclide Imaging
    Chemical Substances Biomarkers, Tumor ; Proteins ; WFDC2 protein, human
    Language English
    Publishing date 2019-06-29
    Publishing country Slovakia
    Document type Journal Article
    ZDB-ID 415445-9
    ISSN 0028-2685
    ISSN 0028-2685
    DOI 10.4149/neo_2018_181212N961
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  3. Article: Možnosti stanovenia sérovej koncentrácie osteokalcínu u pacientov s karcinómom pľúc pri podozrení na kostné metastázy.

    Weissensteiner, J / Babušíková, E

    Klinicka onkologie : casopis Ceske a Slovenske onkologicke spolecnosti

    2015  Volume 28, Issue 1, Page(s) 51–56

    Abstract: Aim: The aim of this study was to compare serum levels of biochemical markers of bone metabolism - osteocalcin (OC) in correlation with bone metastases found during whole-body bone scintigraphy in patients with lung cancer.: Material and methods: The ...

    Title translation The possibility of the serum concentration of osteocalcin determination in lung cancer patients with suspected bone metastases.
    Abstract Aim: The aim of this study was to compare serum levels of biochemical markers of bone metabolism - osteocalcin (OC) in correlation with bone metastases found during whole-body bone scintigraphy in patients with lung cancer.
    Material and methods: The serum levels of OC as a bone formation marker were determined in 60 patients (46 male, 14 female, mean age 66.65, range 50-84 years) with lung cancer (51 non-small-cell lung cancers - NSCLC and nine small-cell lung cancers - SCLC) and correlated with the presence of bone metastases detected by whole-body bone scintigraphy (hybrid system SPECT/CT: BrightView XCT, Philips Healthcare). Whole-body bone scintigraphy results were compared with OC for each patient with lung cancer and for person from control group of 10 persons (two males, eight females, mean age 52.3, range 34-67 years) with-out malignant disease.
    Results: By whole-body bone scintigraphy, bone metastases were found in 15 cases (25%), probably in 11 cases (18.33%) and 34 patients (56.67%) were without bone metastases out of 60 patients with lung cancer. The serum levels of OC were above reference range in five cases (8.33%) only with NSCLC and below reference range in 12 cases (20%) - in 10 cases in patients with NSCLC and in two cases in patients with SCLC. In control group of 10 persons, serum level of OC was below reference range only in one case.
    Conclusion: The serum concentrations of osteocalcin were not correlated with findings performed bywhole-body bone scintigraphy in patients with lung cancer. Osteocalcin serum levels determination probably does not have diagnostic importance in lung cancer patients with suspected bone metastases.
    MeSH term(s) Aged ; Aged, 80 and over ; Biomarkers, Tumor/blood ; Bone Neoplasms/blood ; Bone Neoplasms/diagnostic imaging ; Bone Neoplasms/secondary ; Carcinoma, Non-Small-Cell Lung/blood ; Carcinoma, Non-Small-Cell Lung/diagnostic imaging ; Carcinoma, Non-Small-Cell Lung/secondary ; Female ; Humans ; Lung Neoplasms/blood ; Lung Neoplasms/pathology ; Male ; Middle Aged ; Osteocalcin/blood ; Radionuclide Imaging ; Small Cell Lung Carcinoma/blood ; Small Cell Lung Carcinoma/diagnostic imaging ; Small Cell Lung Carcinoma/secondary
    Chemical Substances Biomarkers, Tumor ; Osteocalcin (104982-03-8)
    Language Czech
    Publishing date 2015-02-16
    Publishing country Czech Republic
    Document type Journal Article
    ZDB-ID 1217739-8
    ISSN 0862-495X
    ISSN 0862-495X
    DOI 10.14735/amko201551
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  4. Article: Faktory modifikujúce koncentráciu IgE v pupočníkovej krvi - pilotná štúdia.

    Petrovičová, O / Bánovčin, P / Babušíková, E / Jeseňák, M

    Epidemiologie, mikrobiologie, imunologie : casopis Spolecnosti pro epidemiologii a mikrobiologii Ceske lekarske spolecnosti J.E. Purkyne

    Fall 2016  Volume 65, Issue 4, Page(s) 226–231

    Abstract: Aim: The complex influence of internal and external environmental factors on the individual and his/her immune system and the lack of suitable markers to assess and reduce the risk of the development of allergies during the lifetime can explain the ... ...

    Title translation Factors modifying cord blood IgE levels - a pilot study.
    Abstract Aim: The complex influence of internal and external environmental factors on the individual and his/her immune system and the lack of suitable markers to assess and reduce the risk of the development of allergies during the lifetime can explain the continuous increase in the number of people affected by some form of allergy. According to the results of some studies, cord blood IgE level could be a useful early marker for assessing the risk of atopic diseases, but the studies showed controversial results. In addition, several authors discuss the origin of these antibodies (synthesis in utero, peripartum contamination from maternal blood or placental transfer). The aim of our pilot study was to investigate the possible influence of modifying factors on cord blood IgE level.
    Material and methods: Our group of patients consisted of 184 retrospectively selected neonates (98 boys, 53.3% and 86 girls, 46.7%) from whom cord blood was collected and cord blood IgE level was measured 25 years ago (PRIST method). The impact of selected modifying factors (sex, type of delivery or month of birth) on cord blood IgE level was assessed retrospectively.
    Results: Higher cord blood IgE levels were found in boys than in girls, in neonates born by Caesarean section than in those born by natural delivery, and in those born in the winter months than in other seasons of the year. Our findings are in agreement with those of other authors.
    Conclusion: Based on our results and those of others, we assume that the selected factors affect the cord blood IgE levels to varying degrees. These facts should be taken into consideration while interpreting the cord blood IgE levels.
    MeSH term(s) Female ; Fetal Blood/chemistry ; Humans ; Hypersensitivity ; Immunoglobulin E/blood ; Infant, Newborn ; Male ; Pilot Projects ; Pregnancy ; Seasons
    Chemical Substances Immunoglobulin E (37341-29-0)
    Language Czech
    Publishing date Fall 2016
    Publishing country Czech Republic
    Document type Journal Article
    ZDB-ID 1188216-5
    ISSN 1805-451X ; 1210-7913 ; 0009-0522
    ISSN (online) 1805-451X
    ISSN 1210-7913 ; 0009-0522
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  5. Article ; Online: Effect of Global Brain Ischemia on Amyloid Precursor Protein Metabolism and Expression of Amyloid-Degrading Enzymes in Rat Cortex: Role in Pathogenesis of Alzheimer's Disease.

    Babusikova, Eva / Dobrota, Dusan / Turner, Anthony J / Nalivaeva, Natalia N

    Biochemistry. Biokhimiia

    2021  Volume 86, Issue 6, Page(s) 680–692

    Abstract: The incidence of Alzheimer's disease (AD) increases significantly following chronic stress and brain ischemia which, over the years, cause accumulation of toxic amyloid species and brain damage. The effects of global 15-min ischemia and 120-min ... ...

    Abstract The incidence of Alzheimer's disease (AD) increases significantly following chronic stress and brain ischemia which, over the years, cause accumulation of toxic amyloid species and brain damage. The effects of global 15-min ischemia and 120-min reperfusion on the levels of expression of the amyloid precursor protein (APP) and its processing were investigated in the brain cortex (Cx) of male Wistar rats. Additionally, the levels of expression of the amyloid-degrading enzymes neprilysin (NEP), endothelin-converting enzyme-1 (ECE-1), and insulin-degrading enzyme (IDE), as well as of some markers of oxidative damage were assessed. It was shown that the APP mRNA and protein levels in the rat Cx were significantly increased after the ischemic insult. Protein levels of the soluble APP fragments, especially of sAPPβ produced by β-secretase, (BACE-1) and the levels of BACE-1 mRNA and protein expression itself were also increased after ischemia. The protein levels of APP and BACE-1 in the Cx returned to the control values after 120-min reperfusion. The levels of NEP and ECE-1 mRNA also decreased after ischemia, which correlated with the decreased protein levels of these enzymes. However, we have not observed any changes in the protein levels of insulin-degrading enzyme. Contents of the markers of oxidative damage (di-tyrosine and lysine conjugates with lipid peroxidation products) were also increased after ischemia. The obtained data suggest that ischemia shifts APP processing towards the amyloidogenic β-secretase pathway and accumulation of the neurotoxic Aβ peptide as well as triggers oxidative stress in the cells. These results are discussed in the context of the role of stress and ischemia in initiation and progression of AD.
    MeSH term(s) Alzheimer Disease/etiology ; Alzheimer Disease/metabolism ; Amyloid Precursor Protein Secretases/genetics ; Amyloid Precursor Protein Secretases/metabolism ; Amyloid beta-Protein Precursor/genetics ; Amyloid beta-Protein Precursor/metabolism ; Animals ; Brain Ischemia/complications ; Brain Ischemia/enzymology ; Brain Ischemia/metabolism ; Cerebral Cortex/enzymology ; Cerebral Cortex/metabolism ; Endothelin-Converting Enzymes/genetics ; Endothelin-Converting Enzymes/metabolism ; Gene Expression Regulation ; Insulysin/genetics ; Insulysin/metabolism ; Male ; Neprilysin/genetics ; Neprilysin/metabolism ; Oxidative Stress ; Rats ; Rats, Wistar ; Reperfusion Injury/complications ; Reperfusion Injury/enzymology ; Reperfusion Injury/metabolism
    Chemical Substances Amyloid beta-Protein Precursor ; Amyloid Precursor Protein Secretases (EC 3.4.-) ; Neprilysin (EC 3.4.24.11) ; Insulysin (EC 3.4.24.56) ; Ece1 protein, rat (EC 3.4.24.71) ; Endothelin-Converting Enzymes (EC 3.4.24.71)
    Language English
    Publishing date 2021-07-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1109-5
    ISSN 1608-3040 ; 0006-2979 ; 0320-9717
    ISSN (online) 1608-3040
    ISSN 0006-2979 ; 0320-9717
    DOI 10.1134/S0006297921060067
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  6. Article ; Online: Estrogen receptor alpha polymorphisms and the risk of prostate cancer development.

    Jurečeková, Jana / Babušíková, Eva / Kmeťová, Monika / Kliment, Ján / Dobrota, Dušan

    Journal of cancer research and clinical oncology

    2015  Volume 141, Issue 11, Page(s) 1963–1971

    Abstract: Purpose: The main purpose of the study was to evaluate the effect of two polymorphisms in the estrogen receptor alpha, rs2077647 and rs3798577, on the development of prostate cancer, their correlation with selected clinical characteristics, as well as ... ...

    Abstract Purpose: The main purpose of the study was to evaluate the effect of two polymorphisms in the estrogen receptor alpha, rs2077647 and rs3798577, on the development of prostate cancer, their correlation with selected clinical characteristics, as well as consideration of potential interactions between four estrogen receptor alpha polymorphisms (rs2077647, rs3798577, PvuII, XbaI).
    Methods: The study was performed using 395 patients with histologically verified prostate cancer and 253 healthy male controls.
    Results: The CC genotype of rs2077647 was significantly associated with prostate cancer (OR = 1.61). No association was found between rs3798577 polymorphism and prostate cancer. After stratification of patients according to the age at diagnosis and Gleason score, we observed significant correlation between rs2077647 polymorphism and prostate cancer risk in patients diagnosed before the age of 60 as well as patients with Gleason score <7, while rs3798577 was significantly associated with prostate cancer risk development in patients older than 60 and with Gleason score ≥7. Double analysis of each combination of four studied polymorphisms showed that presence of at least three variant alleles was associated with prostate cancer risk in all combinations, while each containing rs3798577 was significantly associated with development of high-grade carcinomas.
    Conclusions: The present study suggests that rs2077647 polymorphism may be a risk factor for prostate cancer especially in patients diagnosed before the age of 60, while rs3798577 polymorphism could probably serve rather as promoting factor in combination with other polymorphisms in estrogen receptor alpha contributing preferably to development of high-grade carcinomas.
    MeSH term(s) Aged ; Case-Control Studies ; Estrogen Receptor alpha/genetics ; Gene Frequency/genetics ; Genetic Predisposition to Disease ; Humans ; Male ; Middle Aged ; Polymorphism, Single Nucleotide/genetics ; Prostatic Neoplasms/epidemiology ; Prostatic Neoplasms/genetics ; Risk ; Risk Factors
    Chemical Substances ESR1 protein, human ; Estrogen Receptor alpha
    Language English
    Publishing date 2015-04-01
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 134792-5
    ISSN 1432-1335 ; 0171-5216 ; 0084-5353 ; 0943-9382
    ISSN (online) 1432-1335
    ISSN 0171-5216 ; 0084-5353 ; 0943-9382
    DOI 10.1007/s00432-015-1966-6
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  7. Article: Oxidative Stress and Bronchial Asthma in Children-Causes or Consequences?

    Jesenak, Milos / Zelieskova, Maria / Babusikova, Eva

    Frontiers in pediatrics

    2017  Volume 5, Page(s) 162

    Abstract: Bronchial asthma is one of the most common chronic inflammatory diseases of the airways. In the pathogenesis of this disease, the interplay among the genes, intrinsic, and extrinsic factors are crucial. Various combinations of the involved factors ... ...

    Abstract Bronchial asthma is one of the most common chronic inflammatory diseases of the airways. In the pathogenesis of this disease, the interplay among the genes, intrinsic, and extrinsic factors are crucial. Various combinations of the involved factors determine and modify the final clinical phenotype/endotype of asthma. Oxidative stress results from an imbalance between the production of reactive oxygen species and reactive nitrogen species and the capacity of antioxidant defense mechanisms. It was shown that oxidative damage of biomolecules is strongly involved in the asthmatic inflammation. It is evident that asthma is accompanied by oxidative stress in the airways and in the systemic circulation. The oxidative stress is more pronounced during the acute exacerbation or allergen challenge. On the other hand, the genetic variations in the genes for anti-oxidative and pro-oxidative enzymes are variably associated with various asthmatic subtypes. Whether oxidative stress is the consequence of, or the cause for, chronic changes in asthmatic airways is still being discussed. Contribution of oxidative stress to asthma pathology remains at least partially controversial, since antioxidant interventions have proven rather unsuccessful. According to current knowledge, the relationship between oxidative stress and asthmatic inflammation is bidirectional, and genetic predisposition could modify the balance between these two positions-oxidative stress as a cause for or consequence of asthmatic inflammation.
    Language English
    Publishing date 2017-07-24
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2711999-3
    ISSN 2296-2360
    ISSN 2296-2360
    DOI 10.3389/fped.2017.00162
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  8. Article ; Online: Association of Gene Polymorphisms in Interleukin 6 in Infantile Bronchial Asthma.

    Babusikova, Eva / Jurecekova, Jana / Jesenak, Milos / Evinova, Andrea

    Archivos de bronconeumologia

    2017  Volume 53, Issue 7, Page(s) 381–386

    Abstract: Introduction: The genetic background of bronchial asthma is complex, and it is likely that multiple genes contribute to its development both directly and through gene-gene interactions. Cytokines contribute to different aspects of asthma, as they ... ...

    Title translation Asociación entre polimorfismos genéticos de la interleucina 6 y el asma bronquial en niños.
    Abstract Introduction: The genetic background of bronchial asthma is complex, and it is likely that multiple genes contribute to its development both directly and through gene-gene interactions. Cytokines contribute to different aspects of asthma, as they determine the type, severity and outcomes of asthma pathogenesis. Allergic asthmatics undergoing an asthmatic attack exhibit significantly higher levels of pro-inflammatory cytokines, such as interleukins and chemokines. In recent years, cytokines and their receptors have been shown to be highly polymorphic, and this prompted us to investigate interleukin 6 promoter polymorphisms at position -174G/C (rs1800795) and at -572G/C (rs1800796) in relation to asthma in children.
    Methods: Interleukin 6 promoter polymorphisms were analyzed in bronchial asthma patients and healthy children using polymerase chain reaction-restriction fragment length polymorphism analysis.
    Results: We observed a significant association between polymorphism at -174G/C and bronchial asthma (OR=3.4, 95% CI: 2.045-5.638, P<.001). Higher associations between polymorphism at IL-6 -174G/C and bronchial asthma were observed in atopic patients (OR=4.1, 95% CI: 2.308-7.280, P<8.10
    Conclusions: Interleukin 6 polymorphism is associated with bronchial asthma, particularly its atopic phenotype. Expression and secretion of interleukins in asthmatic patients may be affected by genetic polymorphisms, and could have a disease-modifying effect in the asthmatic airway and modify the therapeutic response.
    Language Spanish
    Publishing date 2017-07
    Publishing country Spain
    Document type Journal Article
    ZDB-ID 733126-5
    ISSN 1579-2129 ; 0300-2896
    ISSN (online) 1579-2129
    ISSN 0300-2896
    DOI 10.1016/j.arbres.2016.09.012
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  9. Article ; Online: The Role of Interleukin-6 Polymorphism (rs1800795) in Prostate Cancer Development and Progression.

    Jurečeková, Jana / Drobková, Henrieta / Šarlinová, Miroslava / Babušíková, Eva / Sivoňová, Monika Kmeťová / Matáková, Tatiana / Kliment, Ján / Halašová, Erika

    Anticancer research

    2018  Volume 38, Issue 6, Page(s) 3663–3667

    Abstract: Background/aim: Interleukin-6 is an important modulator of inflammation, which is one of the factors involved in prostate cancer. The aim of the study was to evaluate the possible association of the IL-6 -174 polymorphism (rs1800795) with the risk of ... ...

    Abstract Background/aim: Interleukin-6 is an important modulator of inflammation, which is one of the factors involved in prostate cancer. The aim of the study was to evaluate the possible association of the IL-6 -174 polymorphism (rs1800795) with the risk of prostate cancer development and progression.
    Materials and methods: The study population consisted of 446 prostate cancer patients, 377 benign prostatic hyperplasia (BHP) patients and 276 healthy men. Genotyping was performed by PCR-RFLP analysis. IL-6 plasma levels were measured by the ELISA method.
    Results: The GC genotype (OR=0.61, p=0.005) and C allele (OR=0.8, p=0.04) of the IL-6 -174 polymorphism were significantly associated with prostate cancer. No genotype was associated with BHP. IL-6 plasma levels were significantly increased in prostate cancer patients compared to both healthy men (p=0.02) and BHP patients (p=0.008). No significant differences were observed in IL-6 plasma levels in connection with IL-6 -174 genotypes.
    Conclusion: The IL-6 -174 polymorphism was significantly associated with prostate cancer in Slovak patients.
    MeSH term(s) Aged ; Alleles ; Disease Progression ; Gene Frequency ; Genetic Predisposition to Disease/genetics ; Genotype ; Humans ; Interleukin-6/blood ; Interleukin-6/genetics ; Male ; Middle Aged ; Polymorphism, Single Nucleotide ; Prostatic Hyperplasia/blood ; Prostatic Hyperplasia/genetics ; Prostatic Neoplasms/blood ; Prostatic Neoplasms/genetics ; Prostatic Neoplasms/pathology ; Risk Factors
    Chemical Substances Interleukin-6
    Language English
    Publishing date 2018-06
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 604549-2
    ISSN 1791-7530 ; 0250-7005
    ISSN (online) 1791-7530
    ISSN 0250-7005
    DOI 10.21873/anticanres.12643
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  10. Article ; Online: Age-associated changes in Ca(2+)-ATPase and oxidative damage in sarcoplasmic reticulum of rat heart.

    Babušíková, E / Lehotský, J / Dobrota, D / Račay, P / Kaplán, P

    Physiological research

    2012  Volume 61, Issue 5, Page(s) 453–460

    Abstract: Altered Ca(2+) handling may be responsible for the development of cardiac contractile dysfunctions with advanced age. In the present study, we investigated the roles of oxidative damage to sarcoplasmic reticulum (SR) and expression of Ca(2+)-ATPase ( ... ...

    Abstract Altered Ca(2+) handling may be responsible for the development of cardiac contractile dysfunctions with advanced age. In the present study, we investigated the roles of oxidative damage to sarcoplasmic reticulum (SR) and expression of Ca(2+)-ATPase (SERCA 2a) and phospholamban in age-associated dysfunction of cardiac SR. SR vesicles were prepared from hearts of 2-, 6-, 15-, and 26-month-old Wistar rats. Although activity of Ca(2+)-ATPase decreased with advancing age, no differences in relative amounts of SERCA 2a and phospholamban protein were observed. On the other hand, significant accumulation of protein oxidative damage occurred with aging. The results of this study suggest that age-related alteration in Ca(2+)-ATPase activity in the rat heart is not a consequence of decreased protein levels of SERCA 2a and phospholamban, but could arise from oxidative modifications of SR proteins. Cellular oxidative damage caused by reactive oxygen species could contribute to age-related alternations in myocardial relaxation.
    MeSH term(s) Aging/pathology ; Aging/physiology ; Animals ; Calcium-Transporting ATPases/metabolism ; Cells, Cultured ; Male ; Myocardium/enzymology ; Myocardium/pathology ; Oxidation-Reduction ; Oxidative Stress/physiology ; Rats ; Rats, Wistar ; Sarcoplasmic Reticulum/enzymology
    Chemical Substances Calcium-Transporting ATPases (EC 7.2.2.10)
    Language English
    Publishing date 2012-08-08
    Publishing country Czech Republic
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1073141-6
    ISSN 1802-9973 ; 0369-9463 ; 0862-8408
    ISSN (online) 1802-9973
    ISSN 0369-9463 ; 0862-8408
    DOI 10.33549/physiolres.932320
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