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Archives of Physiology and Biochemistry

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https://www.readbyqxmd.com/read/27855519/xanthohumol-from-hop-cones-humulus-lupulus-l-prevents-adp-induced-platelet-reactivity
#1
Boguslawa Luzak, Hassan Kassassir, Edward Rój, Lidia Stanczyk, Cezary Watala, Jacek Golanski
Hop cones (Humulus lupulus L.), very rich source of phenolic compounds, possessing anticancer, antioxidant and anti-inflammatory activities, are considered as beneficial diet ingredients improving human health. In this study, the antiplatelet action of xanthohumol (XN), the principal flavonoid in hop cones, was investigated. XN significantly attenuated ADP-induced blood platelet aggregation (97.2 ± 35.7 AU for 6 μg/ml of XN vs. 120.4 ± 30.1 AU for 0.17% dimethyl sulfoxide (DMSO), p < 0...
November 18, 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27855518/pcr-arrays-indicate-that-the-expression-of-extracellular-matrix-and-cell-adhesion-genes-in-human-adipocytes-is-regulated-by-il-1%C3%AE-interleukin-1%C3%AE
#2
Malgorzata A Kępczyńska, Mohamed S Zaibi, Suliman Y Alomar, Paul Trayhurn
The role of IL-1β in regulating the expression of extracellular matrix (ECM) and cell adhesion genes in human adipocytes has been examined. Adipocytes differentiated in culture were incubated with IL-1β for 4 or 24 h and RNA probed with PCR arrays for 84 ECM and cell adhesion genes. Treatment with IL-1β resulted in changes in the expression at one or both time points of ∼50% of the genes probed by the arrays, the majority being down-regulated. Genes whose expression was down-regulated by IL-1β included those encoding several collagen chains and integrin subunits...
November 18, 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27855503/inhibitory-activities-of-cystoseira-crinita-sulfated-polysaccharide-on-key-enzymes-related-to-diabetes-and-hypertension-in-vitro-and-animal-study
#3
Amel Ben Gara, Rihab Ben Abdallah Kolsi, Neila Jardak, Rim Chaaben, Abdelfattah El-Feki, Lotfi Fki, Hafedh Belghith, Karima Belghith
The present study investigated the effect of the Cystoseira crinita sulfated polysaccharide (CCSP) on key enzymes activities related to diabetes in vitro and in diabetic rats. We found that CCSP inhibited pancreatic α-amylase with IC50 = 39.16 μg/ml and angiotensin I-converting enzyme (ACE) activity with IC50 = 58.35 μg/ml in vitro. In diabetic rats, the administration of CCSP reduced the activity of α-amylase in serum, pancreas, and intestine by 23%, 44.38%, and 45%, respectively as compared to untreated diabetic rats...
November 18, 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27808571/cytotoxic-t-lymphocyte-associated-protein-4-gene-polymorphism-is-related-to-rheumatoid-arthritis-in-egyptian-population
#4
Shaimaa A Fattah, Maivel H Ghattas, Samy M Saleh, Dina M Abo-Elmatty
CONTEXT: Cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) is a CD28-family receptor expressed on T-cells which suppresses T cell proliferation. CTLA-4 -318C/T polymorphism is involved in regulation of CTLA-4 expression. OBJECTIVE: The study aimed to investigate the genetic association of CTLA-4 -318C/T polymorphism with rheumatoid arthritis (RA) and the activity and severity of the disease in the Egyptian population. METHODS: A single nucleotide polymorphism (rs5742909) in CTLA-4 was genotyped in 100 RA patients and 100 healthy controls using polymerase chain reaction-restriction fragment length polymorphism...
November 3, 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27710142/corrigendum
#5
(no author information available yet)
No abstract text is available yet for this article.
October 6, 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27656952/effects-of-ampk-activation-on-lipolysis-in-primary-rat-adipocytes-studies-at-different-glucose-concentrations
#6
Tomasz Szkudelski, Katarzyna Szkudelska
Adipose tissue plays a key role in energy homeostasis. Adenosine monophosphate (AMP)-activated protein kinase (AMPK) is an important intracellular energy sensor. Effects of activation of AMPK by aminomidazole-4-carboxamide ribonucleotide (AICAR) on lipolysis in the rat adipocytes were determined in the presence of 3 or 12 mM glucose. Response to epinephrine or dibutyryl-cAMP was higher in the presence of 12 mM glucose. AICAR decreased lipolysis, also when glucose was replaced by alanine or succinate and without decrease in cAMP levels...
September 22, 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27808565/mass-spectrometry-in-life-science-research
#7
Stefan Lehr, Daniel Markgraf
Investigating complex signatures of biomolecules by mass spectrometry approaches has become indispensable in molecular life science research. Nowadays, various mass spectrometry-based omics technologies are available to monitor qualitative and quantitative changes within hundreds or thousands of biological active components, including proteins/peptides, lipids and metabolites. These comprehensive investigations have the potential to decipher the pathophysiology of disease development at a molecular level and to monitor the individual response of pharmacological treatment or lifestyle intervention...
December 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27615280/oxygen-and-differentiation-status-modulate-the-effect-of-x-ray-irradiation-on-physiology-and-mitochondrial-proteome-of-human-neuroblastoma-cells
#8
Tamara Džinić, Sonja Hartwig, Stefan Lehr, Norbert A Dencher
Cytotoxic effects, including oxidative stress, of low linear energy transfer (LET)-ionizing radiation are often underestimated and studies of their mechanisms using cell culture models are widely conducted with cells cultivated at atmospheric oxygen that does not match its physiological levels in body tissues. Also, cell differentiation status plays a role in the outcome of experiments. We compared effects of 2 Gy X-ray irradiation on the physiology and mitochondrial proteome of nondifferentiated and human neuroblastoma (SH-SY5Y) cells treated with retinoic acid cultivated at 21% and 5% O2...
December 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27595307/collagen-analysis-of-the-ascending-aortic-dilatation-associated-with-bicuspid-aortic-valve-disease-compared-with-tricuspid-aortic-valve
#9
Alexander Navarrete Santos, Junfeng Yan, Peter Lochmann, Heike Pfeil, Michael Petersen, Andreas Simm, Hendrik Treede, Hans H Sievers, Salah A Mohamed
Dilatation of the ascending aorta is a common occurrence in patients with bicuspid aortic valve (BAV). The aim of the current study was to characterize collagen content in advanced glycation end products (AGEs) of dilated aortic tissue from two distinct areas, concave and convex aortic sites in patients with BAV and TAV. Collagen contents extracted from 100 mg tissue was isolated by enzymatic digestion using pepsin and the nondigested material was further digested using cyanogen bromide, insoluble collagen fraction (ICF) was extracted by hydrochloric acid hydrolysis...
December 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27494767/impact-of-fibroblast-growth-factor-21-on-the-secretome-of-human-perivascular-preadipocytes-and-adipocytes-a-targeted-proteomics-approach
#10
Lucia Berti, Sonja Hartwig, Martin Irmler, Bernhard Rädle, Dorothea Siegel-Axel, Johannes Beckers, Stefan Lehr, Hadi Al-Hasani, Hans-Ulrich Häring, Martin Hrabě de Angelis, Harald Staiger
CONTEXT: Perivascular adipose tissue (PVAT) is suggested to impact on vascular cells via humoral factors, possibly contributing to endothelial dysfunction and atherosclerosis. OBJECTIVE: To address whether the hepatokine fibroblast growth factor (FGF) 21 affects the PVAT secretome. METHODS: Human perivascular (pre)adipocytes were subjected to targeted proteomics and whole-genome gene expression analysis. RESULTS: Preadipocytes, as compared to adipocytes, secreted higher amounts of inflammatory cytokines and chemokines...
December 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27467289/native-dige-proteomic-analysis-of-mitochondria-from-substantia-nigra-and-striatum-during-neuronal-degeneration-and-its-compensation-in-an-animal-model-of-early-parkinson-s-disease
#11
Katarzyna Kuter, Manuela Kratochwil, Sven-Hendric Marx, Sonja Hartwig, Stephan Lehr, Michiru D Sugawa, Norbert A Dencher
Cause of Parkinson's disease (PD) is still not understood. Motor symptoms are not observed at early stages of disease due to compensatory processes. Dysfunction of mitochondria was indicated already at preclinical PD. Selective toxin 6-OHDA was applied to kill dopaminergic neurons in substantia nigra and disturb neuronal transmission in striatum. Early phase of active degeneration and later stage, when surviving cells adapted to function normally, were analysed. 2D BN/SDS difference gel electrophoresis (DIGE) of mitochondrial proteome enabled to point out crucial processes involved at both time-points in dopaminergic structures...
December 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27373781/untargeted-mass-spectrometric-approach-in-metabolic-healthy-offspring-of-patients-with-type-2-diabetes-reveals-medium-chain-acylcarnitine-as-potential-biomarker-for-lipid-induced-glucose-intolerance-lgit
#12
Birgit Knebel, Susanne Mack, Stefan Lehr, Aiko Barsch, Martina Schiller, Jutta Haas, Simone Lange, Jens Fuchser, Gabriela Zurek, Dirk Müller-Wieland, Jorg Kotzka
Offspring of type 2 diabetes (T2D) patients have increased risk to develop diabetes, due to inherited genetic susceptibility that directly interferes with the individual adaption to environmental conditions. We characterise T2D offspring (OSP) to identify metabolic risk markers for early disease prediction. Plasma of metabolically healthy OSP individuals (n = 43) was investigated after an oral lipid tolerance test (oLTT) by an untargeted mass spectrometric approach for holistic metabolome analyses. Two subgroups of OSP probands can be separated by oLTT, although not differing in general clinical parameters...
December 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27089245/2d-gel-based-proteomics-there-s-life-in-the-old-dog-yet
#13
Reiner Westermeier
In the nowadays mainly mass spectrometry-driven world of Proteomics, one can frequently read and hear that 2D gel-based electrophoresis methods are no longer used for proteome analysis. This short review is a compilation of facts why the gel-based workflow is not dead.
December 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27477619/insulin-sensitivity-body-composition-and-adipose-depots-following-12-w-combined-endurance-and-strength-training-in-dysglycemic-and-normoglycemic-sedentary-men
#14
Torgrim Mikal Langleite, Jørgen Jensen, Frode Norheim, Hanne Løvdal Gulseth, Daniel Steensen Tangen, Kristoffer Jensen Kolnes, Ansgar Heck, Tryggve Storås, Guro Grøthe, Marius Adler Dahl, Anders Kielland, Torgeir Holen, Hans Jørgen Noreng, Hans Kristian Stadheim, Atle Bjørnerud, Egil Ivar Johansen, Birgitte Nellemann, Kåre Inge Birkeland, Christian A Drevon
CONTEXT: Insulin resistance and dysglycemia are associated with physical inactivity and adiposity, and may be improved by exercise. OBJECTIVE: Investigate the effect of exercise on insulin sensitivity, body composition and adipose depots in sedentary men with (n = 11) or without (n = 11) overweight and dysglycemia. MATERIAL AND METHODS: Euglycemic-hyperinsulinemic clamp, ankle-to-neck MRI, MRS, muscle and adipose tissue biopsies before and after 12 weeks combined strength and endurance exercise...
October 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27424521/effects-of-exercise-training-on-hepatic-oxidative-stress-and-antioxidant-status-in-aged-rats
#15
Nilsel Okudan, Muaz Belviranli
This study investigated the effects of exercise training on oxidative stress, and antioxidant defense markers in the liver tissues of young and aged rats. Two age groups of 4-(young) and 20-months-(aged) old male Wistar rats were performed exercise training program consisted of swimming exercise for 8 weeks. The biomarkers of pro/antioxidant status malondialdehyde (MDA), protein carbonyl (PC), 8-hydroxy-2'-deoxyguanosine (8-OHdG), total glutathione (GSH) and superoxide dismutase (SOD) were assessed by commercially available kits...
October 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27245197/erythrocyte-senescence-and-membrane-transporters-in-young-and-old-rats
#16
Sandeep Singh, Kanti Bhooshan Pandey, Syed Ibrahim Rizvi
Alterations at the level of plasma membrane are reported to play an important role in cellular senescence. The present study was undertaken to correlate cellular senescence, membrane transport processes and organismal aging. To achieve this objective activities of membrane linked Na(+)/K (+) ATPase (NKA), Na(+)/H(+) exchanger (NHE) and correlation with membrane hydrxyperoxide level, sialic acid content and membrane protein oxidation was studied in density-gradient fractionated young and old erythrocytes from 4 and 24 month old Wistar rats...
October 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27245110/adipokines-and-soluble-cell-adhesion-molecules-in-insulin-resistant-and-non-insulin-resistant-women-with-polycystic-ovary-syndrome
#17
Daniela Iv Koleva, Maria M Orbetzova, Julia G Nikolova, Stefan B Tyutyundzhiev
INTRODUCTION: Insulin resistance (IR) is closely associated with increased atherogenic risk. OBJECTIVE: To investigate leptin, adiponectin, soluble intercellular adhesion molecule-1 (sICAM-1), soluble vascular cell adhesion molecule-1 (sVCAM-1) levels and their relationship with each other and metabolic parameters in women with polycystic ovary syndrome (PCOS). METHODS: The study included 76 PCOS women divided into insulin resistant and non-insulin resistant...
October 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27230980/expression-of-metallothioneins-i-and-ii-related-to-oxidative-stress-in-the-liver-of-aluminium-treated-rats
#18
Imen Ghorbel, Mariem Chaabane, Awatef Elwej, Ons Boudawara, Sameh Abdelhedi, Kamel Jamoussi, Tahya Boudawara, Najiba Zeghal
Hepatotoxicity, induced by aluminium chloride (AlCl3), has been well studied but there are no reports about liver metallothionein (MT) genes induction. Therefore, it is of interest to establish the mechanism involving the relation between MT gene expression levels and the oxidative stress status in hepatic cells of aluminium-treated rats. Aluminium (Al) was administered to rats in their drinking water at a dose of 50 mg/kg body weight for three weeks. AlCl3 provoked hepatotoxicity objectified by an increase in malondialdehyde (MDA), hydrogen peroxide (H2O2), advanced oxidation protein products (AOPP), protein carbonyls (PCO) and a decrease in reduced glutathione (GSH), non-protein thiols (NPSH) and vitamin C...
October 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27109835/neuroprotective-effect-of-resveratrol-against-brain-ischemia-reperfusion-injury-in-rats-entails-reduction-of-dj-1-protein-expression-and-activation-of-pi3k-akt-gsk3b-survival-pathway
#19
Ghada A Abdel-Aleem, Eman F Khaleel, Dalia G Mostafa, Lydia K Elberier
In the current study, we aimed to investigate the mechanistic role of DJ-1/PI3K/Akt survival pathway in ischemia/reperfusion (I/R) induced cerebral damage and to investigate if the resveratrol (RES) mediates its ischemic neuroptotection through this pathway. RES administration to Sham rats boosted glutathione level and superoxide dismutase activity and downregulated inducible nitric oxide synthase expression without affecting redox levels of DJ-1 forms or components of PI3K/Akt pathway including PTEN, p-Akt or p/p-GSK3b...
October 2016: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27011110/circulating-levels-of-leptin-nesfatin-1-and-kisspeptin-in-postmenopausal-obese-women
#20
Feyza Çelik, Muaz Belviranli, Nilsel Okudan
The roles of leptin, nesfatin-1 and kisspeptin in the regulation of food intake and/or reproduction are well known; however, the interactions between these hormones remain unclear, especially in humans. The aim of this study was to determine the roles of leptin, nesfatin-1 and kisspeptin in pre- and postmenopausal obese and non-obese women. The study included 83 women who were divided into four groups based on menopausal status and body mass index. The leptin level was significantly higher in the obese women than in the non-obese women (p < 0...
October 2016: Archives of Physiology and Biochemistry
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