CCL

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1.

001-es BibID:BIBFORM002002
Első szerző:Bácsi Attila (immunológus)
Cím:Colostrinin delays the onset of proliferative senescence of diploid murine fibroblast cells / Attila Bacsi, Mitchell Woodberry, Marian L. Kruzel, Istvan Boldogh
Dátum:2007
Megjegyzések:Colostrinine (CLN), a uniform mixture of low-molecular weight, proline-rich polypeptides, induces neurite outgrowth of pheochromocytoma cells and inhibits beta amyloid-induced apoptosis. Moreover, its administration to patients with Alzheimer's disease resulted in improved cognitive functions. In this study, we investigated the impact of CLN on the lifespan of murine diploid fibroblast cells (MDF), an in vitro model for cellular aging. Here, we show that CLN significantly decelerates the senescence of cultured MDF and increases their population doubling levels. This action of CLN is associated with a decrease in the intracellular levels of reactive oxygen species, which may be due to senescence-associated mitochondrial dysfunction. These data suggest that CLN may delay the development of cellular aging at the level of the organism. Thus, CLN may be used in the prevention and/or therapy of diseases associated with aging processes.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Colostrinine
Oxidative stress
Lifespan
Megjelenés:Neuropeptides. - 41 : 2 (2007), p. 93-101. -
További szerzők:Woodberry, Mitchell Kruzel, Marian L. Boldogh István
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2.

001-es BibID:BIBFORM004324
Első szerző:Birkás Erika
Cím:Synthesis and pharmacological characterization of a novel, highly potent, peptidomimetic delta-opioid radio antagonist, [H-3]Tyr-Tic-(2S, 3R)-beta-MePhe-Phe-OH / Birkas E., Kertész I., Tóth G., Bakota L., Gulya K., Szucs M.
Dátum:2008
Megjegyzések:[(3)H]Tyr-Tic-(2S,3R)-beta-MePhe-Phe-OH (where Tic: 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid) with a specific radioactivity of 53.7 Ci/mmol was synthesized and characterized in receptor binding assays at 25 degrees C in rat brain membranes. The specific binding was saturable and displayed high affinity, with a K(D) of 0.16+/-0.005 nM and B(max) of 85.9+/-6.3 fmol/mg protein. NaCl increased its affinity by about 4-fold in membranes of rat brain and Chinese Hamster Ovary Cells stably transfected with the human delta-opioid receptors (hDOR-CHO) showing that the new ligand is an antagonist. The prototypic delta-opioid ligands were much more potent than mu- or kappa-specific ligands in competition assays. The autoradiographic distribution of the binding sites of the new ligand agreed with the known locations of the delta-opioid receptors in rat brain. The unlabeled new ligand was about 7-fold more potent than the parent peptide in competing for the binding sites of [(3)H]Tyr-Tic-(2S,3R)-beta-MePhe-Phe-OH in rat brain membranes. Likewise, the threo-beta-methyl analog was 3.8-fold more potent than the parent compound in antagonizing the effect of DPDPE in the [(35)S]GTPgammaS functional assay in hDOR-CHO membranes. The new, highly potent, conformationally constrained antagonist may be a valuable pharmacological tool in understanding the structural and topographical requirements of peptide ligand binding to the delta-opioid receptors.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Neuropeptides. - 42 : 1 (2008), p. 57-67. -
További szerzők:Kertész István (1966-) (vegyész) Tóth Géza Bakota Lidia Gulya Károly Szűcs Mária
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3.

001-es BibID:BIBFORM020274
Első szerző:Horváth Péter
Cím:Changes in tracheo-bronchial sensory neuropeptide receptor gene expression pattern in rats with cisplatin-induced sensory neuropathy / Péter Horváth, Zoltán Szilvássy, Barna Peitl, Judit Szilvássy, Zsuzsanna Helyes, János Szolcsányi, József Németh
Dátum:2006
ISSN:0143-4179
Megjegyzések:AbstractAn attenuated neurogenic broncho-constriction underpinned by a decrease in sensory neuropeptide release has been shown to be characteristic of cisplatin-induced neuropathy. The present work was to explore if beyond neuropeptide release, cisplatin at a treatment schedule attaining sensory neuropathy, produced changes in the expression of the receptors of sensory neuropeptides such as somatostatin, calcitonin gene-related peptide (CGRP) and substance P (SP) in bronchial tissue of the rat. Twenty-four Wistar rats were divided into three groups. The animals in the "Treatment groups 1 and 2" were given cisplatin (1.5mgkg(-1)) and mannitol (75mgkg(-1)) over 5 days. The rats in the "Control" group were given mannitol+isotonic saline. Four animals from each group were used to study the expression pattern of the neuropeptide receptors in bronchial tissue. The levels of somatostatin receptor 4 (SSTR 4), neurokinin 1 (NK1), neurokinin 2 (NK2) and CGRP receptor expression were examined by quantitative real time polymerase chain reaction (RT-PCR) method, 11 and 22 days after the last cisplatin/vehicle dose. The cisplatin treatment significantly increased plasma somatostatin immunoreactivity and the expression of SSTR4 receptor detected both on the 11th and 22nd post-treatment days with no change in either CGRP, NK1, and NK2 receptor gene expression or plasma CGRP and substance P levels. We conclude that cisplatin neuropathy is accompanied by an increase in plasma somatostatin immunoreactivity with an increase in SSTR4 expression in rats.
Tárgyszavak:Orvostudományok Gyógyszerészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
tracheo-bronchial
neuropeptide receptor
cisplatin-induced
Megjelenés:Neuropeptides. - 40 : 1 (2006), p. 77-83. -
További szerzők:Szilvássy Zoltán (1957-) (belgyógyász, farmakológus, klinikai farmakológus) Peitl Barna (1972-) (orvos, farmakológus) Szilvássy Judit (1960-2022) (fül- orr- gégész) Helyes Zsuzsanna Szolcsányi János (Pécs) Németh József (1954-) (vegyész, analitikus)
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4.

001-es BibID:BIBFORM040233
Első szerző:Kosztáczky Béla (orvos)
Cím:Neuropeptides induced a pronounced and statin-sensitive dysregulation of mevalone cycle in human monocytes of patients with hypercholesterolemia / Kosztáczky Béla, Fóris Gabriella, Seres Ildikó, Balogh Zoltán, Fülöp Péter, Koncsos Péter, Paragh György
Dátum:2006
ISSN:0143-4179
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Neuropeptides. - 40 : 5 (2006), p. 309-316. -
További szerzők:Fóris Gabriella (1937-) (belgyógyász) Seres Ildikó (1954-) (biokémikus) Balogh Zoltán (1965-) (belgyógyász, gasztroenterológus, diabetológus) Fülöp Péter (1974-) (belgyógyász, endokrinológus, lipidológus) Koncsos Péter (1982-) (belgyógyász) Paragh György (1953-) (belgyógyász)
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Intézményi repozitóriumban (DEA) tárolt változat
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5.

001-es BibID:BIBFORM037732
Első szerző:Padra János Tamás (biológus)
Cím:Leptin triggers Ca2+ imbalance in monocytes of overweight subjects / János Padra, Ildikó Seres, Gabriella Fóris, György Paragh Jr., Gabriella Kónya, György Paragh
Dátum:2012
ISSN:0143-4179
Megjegyzések:Obesity is a major risk factor in numerous diseases, in which elevated intracellular Ca(2+) plays a major role in increased adiposity. We examined the difference between Ca(2+) signals in monocytes of lean and overweight subjects and the relationship between leptin induced NADPH oxidase activation and intracellular calcium concentration [Ca(2+)](i) homeostasis. Our results are as follows: (1) The basal level of [Ca(2+)](i) in resting monocytes of overweight subjects (OW monocytes) was higher than that in control cells, whereas the leptin-induced peak of the Ca(2+) signal was lower and the return to basal level was delayed. (2) Ca(2+) signals were more pronounced in OW monocytes than in control cells. (3) Using different inhibitors of cellular signaling, we found that in control cells the Ca(2+) signals originated from intracellular pools, whereas in OW cells they were generated predominantly by Ca(2+)-influx from medium. Finally, we found correlation between leptin induced superoxide anion generation and Ca(2+) signals. The disturbed [Ca(2+)](i) homeostasis in OW monocytes was fully restored in the presence of fluvastatin. Statins have pleiotropic effects involving the inhibition of free radical generation that may account for its beneficial effect on elevated [Ca(2+)](i) and consequently on the pathomechanism of obesity.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Egészség- és Környezettudomány
Leptin
Obesity
calcium
Ca2+ signal
monocyte
fluvastatin
Megjelenés:Neuropeptides 46 (2012), p. 203-209. -
További szerzők:Seres Ildikó (1954-) (biokémikus) Fóris Gabriella (1937-) (belgyógyász) Paragh György Jr. (1978-) (bőrgyógyász) Kónya Gabriella (1982-) (molekuláris biológus) Paragh György (1953-) (belgyógyász)
Pályázati támogatás:TÁMOP-4.2.1/B-09/1/KONV-2010-0007
TÁMOP
Gyulladásos és egyéb proatherogén tényezők vizsgálata a lipidanyagcsere zavarával járó kórállapotokban
TÁMOP-4.2.2/B-10/1-2010-0024
TÁMOP
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