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Article ; Online: The short-term effects of soybean intake on oxidative and carbonyl stress in men and women.

Celec, Peter / Hodosy, Július / Pálffy, Roland / Gardlík, Roman / Halčák, Lukáč / Ostatníková, Daniela

2013 Volume 18, Issue 5, Page(s) 5190–5200

Abstract: Beyond other beneficial effects, a soy-rich diet has been shown to reduce the risk of cardiovascular diseases and diabetic complications. Reduction of oxidative and carbonyl stress has been proposed as the underlying mechanism, but the evidence for this ... ...

Abstract	Beyond other beneficial effects, a soy-rich diet has been shown to reduce the risk of cardiovascular diseases and diabetic complications. Reduction of oxidative and carbonyl stress has been proposed as the underlying mechanism, but the evidence for this is lacking. The aim of our study was to evaluate the effects of short-term increased soy intake on oxidative and carbonyl stress parameters in young volunteers. Young healthy probands (omnivores) of both genders (55 women, 33 men) were given soybeans (2 g/kg bodyweight daily) for one week. Markers of oxidative and carbonyl stress were measured in plasma at the beginning and at the end of one week soybean intake and after another week of a wash-out period. Total antioxidant capacity was increased by soybean intake in both genders. This led to decreased levels of advanced oxidation protein products in women, but not in men. On the contrary, in men, soybean intake increased lipoperoxidation. No effects on carbonyl stress markers (advanced glycation end products-specific fluorescence and fructosamine) were found. Soybean intake has gender-specific effects on oxidative stress in young healthy probands potentially due to divergent action and metabolism of phytoestrogens in men and women. Effects of soybean intake on carbonyl stress should be evaluated in longer studies.
MeSH term(s)	Adolescent ; Adult ; Advanced Oxidation Protein Products/blood ; Antioxidants/metabolism ; Biomarkers/blood ; Cardiovascular Diseases/blood ; Cardiovascular Diseases/prevention & control ; Female ; Glycation End Products, Advanced/blood ; Humans ; Lipid Peroxidation ; Male ; Oxidative Stress ; Sex Characteristics ; Glycine max
Chemical Substances	Advanced Oxidation Protein Products ; Antioxidants ; Biomarkers ; Glycation End Products, Advanced
Language	English
Publishing date	2013-05-07
Publishing country	Switzerland
Document type	Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1413402-0
ISSN	1420-3049 ; 1431-5165 ; 1420-3049
ISSN (online)	1420-3049
ISSN	1431-5165 ; 1420-3049
DOI	10.3390/molecules18055190
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Article ; Online: Oxidative and carbonyl stress in patients with obstructive sleep apnea treated with continuous positive airway pressure.

Celec, Peter / Hodosy, Július / Behuliak, Michal / Pálffy, Roland / Gardlík, Roman / Halčák, Lukáč / Mucska, Imrich

Sleep & breathing = Schlaf & Atmung

2011 Volume 16, Issue 2, Page(s) 393–398

Abstract: Purpose: The pathogenesis of cardiovascular complications of obstructive sleep apnea syndrome (OSAS) can be explained by oxidative and carbonyl stress due to oxygenation and reoxygenation injury during sleep. This hypothesis has yet to be proved ... ...

Abstract	Purpose: The pathogenesis of cardiovascular complications of obstructive sleep apnea syndrome (OSAS) can be explained by oxidative and carbonyl stress due to oxygenation and reoxygenation injury during sleep. This hypothesis has yet to be proved experimentally, although several clinical observations have found increased oxidative damage in plasma. Continuous positive airway pressure (CPAP) improves symptoms and prognosis of patients with OSAS. Methods: Patients with confirmed SAS (n = 89) underwent polysomnography and received CPAP treatment. Plasma and saliva samples were taken before CPAP therapy as well as after 1 and 6 months of CPAP treatment. Selected markers of oxidative and carbonyl stress were measured in plasma and saliva, and their dynamics was statistically analyzed. Results: Plasma levels of thiobarbituric acid reacting substances-a marker of lipoperoxidation-and advanced glycation end products (AGEs)-a marker of carbonyl stress-were decreased by the CPAP therapy. The decrease of AGEs and fructosamine was also found in saliva. Interestingly, no gender differences and no changes of antioxidant status measured as total antioxidant capacity and ferrous reducing ability were found in either of the samples. Conclusion: Previous findings of lowered plasma markers of oxidative stress were confirmed. Plasma AGEs were lowered by CPAP therapy. This is the first study analyzing markers of oxidative and carbonyl stress in saliva. Non-invasive sampling of saliva makes it a very interesting source of information for repeated monitoring of therapy success. Salivary AGEs and fructosamine as markers of carbonyl stress were decreased by the CPAP therapy and might therefore have potential informative value for clinical observations, as well as for the understanding of the pathogenesis of OSAS complications.
MeSH term(s)	Adult ; Aged ; Antioxidants/metabolism ; Biomarkers/blood ; Continuous Positive Airway Pressure ; Female ; Follow-Up Studies ; Fructosamine/blood ; Glycation End Products, Advanced/blood ; Humans ; Male ; Middle Aged ; Oxidative Stress/physiology ; Polysomnography ; Reference Values ; Saliva/chemistry ; Sleep Apnea, Obstructive/blood ; Sleep Apnea, Obstructive/diagnosis ; Sleep Apnea, Obstructive/therapy ; Thiobarbituric Acid Reactive Substances/metabolism ; Treatment Outcome
Chemical Substances	Antioxidants ; Biomarkers ; Glycation End Products, Advanced ; Thiobarbituric Acid Reactive Substances ; Fructosamine (4429-04-3)
Language	English
Publishing date	2011-03-26
Publishing country	Germany
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1500381-4
ISSN	1522-1709 ; 1520-9512
ISSN (online)	1522-1709
ISSN	1520-9512
DOI	10.1007/s11325-011-0510-4
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Article ; Online: The Short-Term Effects of Soybean Intake on Oxidative and Carbonyl Stress in Men and Women

Lukáč Halčák / Roland Pálffy / Roman Gardlík / Július Hodosy / Peter Celec / Daniela Ostatníková

Molecules, Vol 18, Iss 5, Pp 5190-

2013 Volume 5200

Abstract	Beyond other beneficial effects, a soy-rich diet has been shown to reduce the risk of cardiovascular diseases and diabetic complications. Reduction of oxidative and carbonyl stress has been proposed as the underlying mechanism, but the evidence for this is lacking. The aim of our study was to evaluate the effects of short-term increased soy intake on oxidative and carbonyl stress parameters in young volunteers. Young healthy probands (omnivores) of both genders (55 women, 33 men) were given soybeans (2 g/kg bodyweight daily) for one week. Markers of oxidative and carbonyl stress were measured in plasma at the beginning and at the end of one week soybean intake and after another week of a wash-out period. Total antioxidant capacity was increased by soybean intake in both genders. This led to decreased levels of advanced oxidation protein products in women, but not in men. On the contrary, in men, soybean intake increased lipoperoxidation. No effects on carbonyl stress markers (advanced glycation end products-specific fluorescence and fructosamine) were found. Soybean intake has gender-specific effects on oxidative stress in young healthy probands potentially due to divergent action and metabolism of phytoestrogens in men and women. Effects of soybean intake on carbonyl stress should be evaluated in longer studies.
Keywords	soy ; phytoestrogens ; AOPP ; AGEs ; antioxidative status ; Organic chemistry ; QD241-441
Language	English
Publishing date	2013-05-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
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Article ; Online: Effect of unexpected sequence interruptions to conventional PCR and repeat primed PCR in myotonic dystrophy type 1 testing.

Radvansky, Jan / Ficek, Andrej / Minarik, Gabriel / Palffy, Roland / Kadasi, Ludevit

Diagnostic molecular pathology : the American journal of surgical pathology, part B

2011 Volume 20, Issue 1, Page(s) 48–51

Abstract: Myotonic dystrophy type 1 (DM1) is caused by expansion of the CTG trinucleotide repeat in the DMPK gene. Our study focuses on the effect of recently described unusual sequence interruptions inside the CTG tract on conventional polymerase chain reaction ( ... ...

Abstract	Myotonic dystrophy type 1 (DM1) is caused by expansion of the CTG trinucleotide repeat in the DMPK gene. Our study focuses on the effect of recently described unusual sequence interruptions inside the CTG tract on conventional polymerase chain reaction (PCR) and triplet repeat primed PCR (TP-PCR) amplifications, which are the methods now widely used in molecular testing for DM1. For molecular characterization of the CTG repeat tract, we used conventional fluorescent PCR with bidirectional labeling and both forward and reverse direction TP-PCR. Though the results of the methods are still unambiguous for most alleles, mistyping and false results may occur in the typing of some unordinary alleles carrying sequence interruptions. The presence of these interruptions may lead not only to altered TP-PCR profiles, as can be expected, but also to abnormal electrophoretic mobility of complementary strands produced by conventional amplification of such alleles. Our findings suggest that the simultaneous combination of bidirectionally labeled conventional PCR with TP-PCR performed in both directions may be necessary for increasing the reliability and accuracy of the TP-PCR-based assay for DM1 testing.
MeSH term(s)	Base Sequence/genetics ; DNA Breaks ; Genetic Predisposition to Disease ; Genetic Testing/methods ; Humans ; Myotonic Dystrophy/diagnosis ; Myotonic Dystrophy/genetics ; Myotonin-Protein Kinase ; Polymerase Chain Reaction/methods ; Protein-Serine-Threonine Kinases/genetics ; Sequence Analysis, DNA
Chemical Substances	DMPK protein, human ; Myotonin-Protein Kinase (EC 2.7.11.1) ; Protein-Serine-Threonine Kinases (EC 2.7.11.1)
Language	English
Publishing date	2011-03
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1098858-0
ISSN	1533-4066 ; 1052-9551
ISSN (online)	1533-4066
ISSN	1052-9551
DOI	10.1097/PDM.0b013e3181efe290
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Article: Variability of thiobarbituric acid reacting substances in saliva.

Behuliak, Michal / Pálffy, Roland / Gardlík, Roman / Hodosy, Július / Halcák, Lukác / Celec, Peter

Disease markers

2009 Volume 26, Issue 2, Page(s) 49–53

Abstract: Introduction: Salivary TBARS are a potential marker of oxidative stress in the oral cavity. Previous studies have found increased levels of salivary TBARS in various diseases. The aim of this study was to assess the variability of salivary TBARS in both ...

Abstract	Introduction: Salivary TBARS are a potential marker of oxidative stress in the oral cavity. Previous studies have found increased levels of salivary TBARS in various diseases. The aim of this study was to assess the variability of salivary TBARS in both genders. Subjects & methods: Saliva samples from thirty-eight healthy volunteers (18F & 20M) were collected every day during 30 day period. TBARS levels were measured spectrophotometrically using a high-throughput 96-well plate method. Time series analysis was performed using standard statistical methods. Results: Repeated measures ANOVA showed a significant variation of salivary TBARS within day and subjects (p < 0.001). The dynamics did not differ between genders. Intraindividual variability was very high in both genders with coefficients of variation of more than 60%. Interindividual variability was higher in men than in women (73% vs. 46%; p < 0.01). Discussion: The relatively high intraindividual variability indicates that the use of salivary TBARS will be limited to research on a population level, although some informative value might be gained by repeated samplings. Factors influencing the biological variability of salivary TBARS should be identified in further studies.
MeSH term(s)	Adult ; Biomarkers/analysis ; Female ; Humans ; Male ; Oxidative Stress ; Saliva/chemistry ; Spectrophotometry ; Thiobarbituric Acid Reactive Substances/analysis
Chemical Substances	Biomarkers ; Thiobarbituric Acid Reactive Substances
Language	English
Publishing date	2009-04-30
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	604951-5
ISSN	1875-8630 ; 0278-0240
ISSN (online)	1875-8630
ISSN	0278-0240
DOI	10.3233/DMA-2009-0606
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Zs.A 1856: Show issues			Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (1.OG) ab Jg. 2022: Lesesaal (EG)
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Article ; Online: Antioxidant vitamins prevent oxidative and carbonyl stress in an animal model of obstructive sleep apnea.

Celec, Peter / Jurkovičová, Ingrid / Buchta, Roman / Bartík, Ivan / Gardlík, Roman / Pálffy, Roland / Mucska, Imrich / Hodosy, Július

Sleep & breathing = Schlaf & Atmung

2012 Volume 17, Issue 2, Page(s) 867–871

Abstract: Purpose: The aim of our study was to analyze the effects of an antioxidant treatment on markers of oxidative and carbonyl stress in a rat model of obstructive sleep apnea.: Methods: Wistar rats were randomized into six groups-according to gender and ... ...

Abstract	Purpose: The aim of our study was to analyze the effects of an antioxidant treatment on markers of oxidative and carbonyl stress in a rat model of obstructive sleep apnea. Methods: Wistar rats were randomized into six groups-according to gender and intervention-sham, intermittent hypoxia, and intermittent hypoxia with treatment by vitamins C and E. Rats underwent tracheostomy. The tracheal cannula was closed for 12 s every minute for 1 h to simulate obstructive sleep apnea-related intermittent hypoxia. In the treatment group, rats received vitamin C and E 24 h prior to surgery. Results: The intervention had a significant effect on advanced oxidation protein products (p = 0.008) and advanced glycation end products-specific fluorescence (p = 0.006) but no effect on malondialdehyde. Oxidation and glycation protein products were higher in intermittent hypoxia groups than in sham and in treated groups. Conclusions: Antioxidants alleviate oxidative and carbonyl stress in an experimental model of obstructive sleep apnea. Future studies will show whether such treatment has any clinical value regarding cardiovascular complications of sleep apnea syndrome, preferably in patients with low compliance to continuous positive airway pressure.
MeSH term(s)	Advanced Oxidation Protein Products/drug effects ; Advanced Oxidation Protein Products/physiology ; Animals ; Ascorbic Acid/pharmacology ; Disease Models, Animal ; Female ; Male ; Malondialdehyde/blood ; Oxidative Stress/drug effects ; Oxidative Stress/physiology ; Protein Carbonylation/drug effects ; Protein Carbonylation/physiology ; Rats ; Rats, Wistar ; Sleep Apnea, Obstructive/physiopathology ; Thiobarbituric Acid Reactive Substances/metabolism ; Vitamin E/pharmacology
Chemical Substances	Advanced Oxidation Protein Products ; Thiobarbituric Acid Reactive Substances ; Vitamin E (1406-18-4) ; Malondialdehyde (4Y8F71G49Q) ; Ascorbic Acid (PQ6CK8PD0R)
Language	English
Publishing date	2012-06-07
Publishing country	Germany
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1500381-4
ISSN	1522-1709 ; 1520-9512
ISSN (online)	1522-1709
ISSN	1520-9512
DOI	10.1007/s11325-012-0728-9
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Article ; Online: The effects of anti-inflammatory and anti-angiogenic DNA vaccination on diabetic nephropathy in rats.

Celec, Peter / Hodosy, Július / Gardlík, Roman / Behuliak, Michal / Pálffy, Roland / Pribula, Marek / Jáni, Peter / Turňa, Ján / Sebeková, Katarína

Human gene therapy

2012 Volume 23, Issue 2, Page(s) 158–166

Abstract: Inflammation and angiogenesis play a crucial role in the pathomechanism of diabetic nephropathy. Monocyte chemoattractant protein 1 (MCP) is a key regulator of the immune system in kidneys, and its inhibition with a dominant-negative mutant lacking the N- ...

Abstract	Inflammation and angiogenesis play a crucial role in the pathomechanism of diabetic nephropathy. Monocyte chemoattractant protein 1 (MCP) is a key regulator of the immune system in kidneys, and its inhibition with a dominant-negative mutant lacking the N-terminal amino acids 2-8 (7ND) reduces renal fibrosis. Angiomotin (Amot) is a novel angiogenesis modulator. We studied the effects of inhibition of Amot and MCP using DNA vaccination on incipient diabetic nephropathy in rats. Plasmid DNA (with either 7ND or human Amot) was electroporated twice into hind-limb muscles of rats with streptozotocin-induced diabetes mellitus. Sham-electroporated diabetic rats and healthy animals served as controls. After 4 months, renal histology and biochemical analyses were performed. In sham-electroporated diabetic rats, glomerular histology revealed pathological changes. 7ND and Amot treatments reduced glomerular hypertrophy and periodic acid-Schiff positivity. In both treated groups, the expression of profibrotic (transforming growth factor-β, collagen 1), proinflammatory (interleukin-6, tumor necrosis factor-α), and proangiogenic (vascular endothelial growth factor) genes in the renal cortex was lower than in the diabetic group without treatment. The mentioned renoprotective effects could be mediated via higher total antioxidant capacity and improved glycemic control. Anti-angiogenic and anti-inflammatory DNA vaccination ameliorates the progression of glomerular pathology in an animal model of diabetic nephropathy.
MeSH term(s)	Animals ; Chemokine CCL2/antagonists & inhibitors ; Chemokine CCL2/genetics ; Collagen/biosynthesis ; Collagen/genetics ; Diabetes Mellitus, Experimental/complications ; Diabetes Mellitus, Experimental/metabolism ; Diabetes Mellitus, Experimental/pathology ; Diabetic Nephropathies/complications ; Diabetic Nephropathies/pathology ; Diabetic Nephropathies/prevention & control ; Electroporation ; Fibrosis ; Gene Expression ; Humans ; Intercellular Signaling Peptides and Proteins/genetics ; Interleukin-6/biosynthesis ; Interleukin-6/genetics ; Kidney Glomerulus/blood supply ; Kidney Glomerulus/pathology ; Male ; Membrane Proteins/antagonists & inhibitors ; Membrane Proteins/genetics ; Neovascularization, Pathologic/prevention & control ; Plasmids ; Rats ; Rats, Wistar ; Transforming Growth Factor beta/biosynthesis ; Transforming Growth Factor beta/genetics ; Vaccination ; Vaccines, DNA/administration & dosage ; Vaccines, DNA/genetics ; Vascular Endothelial Growth Factor A/biosynthesis ; Vascular Endothelial Growth Factor A/genetics
Chemical Substances	Amot protein, rat ; Ccl2 protein, rat ; Chemokine CCL2 ; Intercellular Signaling Peptides and Proteins ; Interleukin-6 ; Membrane Proteins ; Transforming Growth Factor beta ; Vaccines, DNA ; Vascular Endothelial Growth Factor A ; vascular endothelial growth factor A, rat ; Collagen (9007-34-5)
Language	English
Publishing date	2012-01-26
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1028152-6
ISSN	1557-7422 ; 1043-0342
ISSN (online)	1557-7422
ISSN	1043-0342
DOI	10.1089/hum.2011.030
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Article ; Online: On the physiology and pathophysiology of antimicrobial peptides.

Pálffy, Roland / Gardlík, Roman / Behuliak, Michal / Kadasi, Ludevit / Turna, Jan / Celec, Peter

Molecular medicine (Cambridge, Mass.)

2008 Volume 15, Issue 1-2, Page(s) 51–59

Abstract: Antimicrobial peptides (AMP) are a heterogeneous group of molecules involved in the nonspecific immune responses of a variety of organisms ranging from prokaryotes to mammals, including humans. AMP have various physical and biological properties, yet the ...

Abstract	Antimicrobial peptides (AMP) are a heterogeneous group of molecules involved in the nonspecific immune responses of a variety of organisms ranging from prokaryotes to mammals, including humans. AMP have various physical and biological properties, yet the most common feature is their antimicrobial effect. The majority of AMP disrupt the integrity of microbial cells by 1 of 3 known mechanisms--the barrel-stave pore model, the thoroidal pore model, or the carpet model. Results of growing numbers of descriptive and experimental studies show that altered expression of AMP in various tissues is important in the pathogenesis of several gastrointestinal, respiratory, and other diseases. We discuss novel approaches and strategies to further improve the promising future of therapeutic applications of AMP. The spread of antibiotic resistance increases the importance of developing a clinical role for AMP.
MeSH term(s)	Animals ; Anti-Infective Agents/metabolism ; Anti-Infective Agents/therapeutic use ; Antimicrobial Cationic Peptides/physiology ; Antimicrobial Cationic Peptides/therapeutic use ; Humans ; Immunity, Innate/physiology ; Models, Biological
Chemical Substances	Anti-Infective Agents ; Antimicrobial Cationic Peptides
Language	English
Publishing date	2008-11-10
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Review
ZDB-ID	1283676-x
ISSN	1528-3658 ; 1076-1551
ISSN (online)	1528-3658
ISSN	1076-1551
DOI	10.2119/molmed.2008.00087
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Article: Interocular amplitude differences of multifocal electroretinograms obtained under monocular and binocular stimulation conditions.

Pálffy, A / Janáky, M / Fejes, I / Horváth, Gy / Benedek, Gy

Acta physiologica Hungarica

2010 Volume 97, Issue 3, Page(s) 326–331

Abstract: ... Methods: Thirty-five subjects were included in the study. A Roland Consult RETIscan system was used. DTL ...

Abstract	Purpose: To compare the interocular amplitude differences of the multifocal electroretinograms (mfERGs) evoked by either monocular or binocular stimulation in healthy subjects with good vision. Methods: Thirty-five subjects were included in the study. A Roland Consult RETIscan system was used. DTL electrodes were employed. First, the right and left eyes were stimulated separately, then, binocular stimulation was applied. The amplitudes of the scalar products were averaged over five concentric retinal regions (rings). Results: The interocular amplitude differences were 21.55% (SD: ±12.72) under monocular conditions and 18.69% (SD: ±11.64) under binocular conditions. No significant differences were found between the amplitudes and variability values obtained under either monocular or binocular stimulation. Conclusions: Our results provided no evidence for the advantage of either binocular or monocular stimulating conditions in obtaining mfERGs. A considerable side difference was found between the mfERGs of the two eyes in almost all individual cases.
MeSH term(s)	Adolescent ; Adult ; Electrodes ; Electroretinography/methods ; Electroretinography/standards ; Evoked Potentials, Visual/physiology ; Female ; Humans ; Male ; Middle Aged ; Reference Values ; Vision, Binocular/physiology ; Vision, Monocular/physiology ; Visual Acuity ; Young Adult
Language	English
Publishing date	2010-09
Publishing country	Hungary
Document type	Clinical Trial ; Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't ; Validation Studies
ZDB-ID	802801-1
ISSN	1588-2683 ; 0231-424X ; 0001-6756
ISSN (online)	1588-2683
ISSN	0231-424X ; 0001-6756
DOI	10.1556/APhysiol.97.2010.3.9
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Article ; Online: Variability of Thiobarbituric Acid Reacting Substances in Saliva

Michal Behuliak / Roland Pálffy / Roman Gardlík / Július Hodosy / Lukáč Halčák / Peter Celec

Disease Markers, Vol 26, Iss 2, Pp 49-

2009 Volume 53

Abstract	Introduction: Salivary TBARS are a potential marker of oxidative stress in the oral cavity. Previous studies have found increased levels of salivary TBARS in various diseases. The aim of this study was to assess the variability of salivary TBARS in both genders.
Keywords	Medicine (General) ; R5-920
Language	English
Publishing date	2009-01-01T00:00:00Z
Publisher	Hindawi Limited
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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