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001-es BibID:	BIBFORM079346
035-os BibID:	(cikkazonosító)7213913 (WOS)000464702500001 (Scopus)85065782402
Első szerző:	Kiss Rita (laboratóriumi diagnosztika szakorvos)
Cím:	Diosgenin and Its Fenugreek Based Biological Matrix Affect Insulin Resistance and Anabolic Hormones in a Rat Based Insulin Resistance Model / Kiss Rita, Pesti-Asbóth Georgina, Szarvas Mária Magdolna, Stündl László, Cziáky Zoltán, Hegedűs Csaba, Kovács Diána, Badale Andrea, Máthé Endre, Szilvássy Zoltán, Remenyik Judit
Dátum:	2019
ISSN:	2314-6133 2314-6141
Megjegyzések:	Fenugreek is known since ancient times as a traditional herbal medicine of its multiple beneficial effects. Fenugreek's most studied and employed effect is its hypoglycemic property, but it can also be useful for the treatment of certain thyroid disorders or for the treatment of anorexia. The regulation of glucose homeostasis is a complex mechanism, dependent on the interaction of different types of hormones and neurotransmitters or other compounds. For the study of how diosgenin and fenugreek seeds modify insulin sensitivity, we used a rat insulin resistance model induced by high-fat diet. Diosgenin in three different doses (1mg/bwkg, 10mg/bwkg, and 50mg/bwkg, respectively) and fenugreek seed (0.2 g/bwkg)were administered orally for 6weeks. Insulin sensitivity was determined by hyperinsulinemic euglycemic glucose clamp method. Our research group found that although glucose infusion rate was not significantly modified in either group, the increased insulin sensitivity index and high metabolic clearance rate of insulin found in the 1 mg/kg diosgenin and the fenugreek seed treated group suggested an improved peripheral insulin sensitivity. Results from the 10 mg/kg diosgenin group, however, suggest a marked insulin resistance. Fenugreek seed therapy results on the investigated anabolic hormones support the theory that, besides insulin and gastrointestinal peptides, the hypothalamichypopituitary axis regulated hormones synchronized action with IGF-1 also play an important role in the maintaining of normal glucose levels. Both diosgenin and fenugreek seeds are capable of interacting with substrates of the above-mentioned regulatory mechanisms, inducing serious hormonal disorders. Moreover, fenugreek seeds showed the ability to reduce the thyroid hormone levels at the periphery and to modify the T4/T3 ratio. It means that in healthy people this effect could be considered a severe side effect; however, in hypothyroidism this effect represents a possibility of alternative natural therapy.
Tárgyszavak:	Agrártudományok Élelmiszertudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Diosgenin Fenugreek Insulin Resistance Anabolic Hormones Rat
Megjelenés:	Biomed Research International. - 2019 (2019), p. 1-13. -
További szerzők:	Pesti-Asbóth Georgina (1990-) (élelmiszerbiztonsági és -minőségi mérnök) Szarvas Mária Magdolna (1989-) (élelmiszeripari mérnök) Stündl László (1970-) (agrármérnök) Cziáky Zoltán Hegedűs Csaba (1983-) (Molekuláris biológus, Cera-Med Kft. Debrecen) Kovács Diána Klára (1985-) (Molekuláris biológus) Badale, Andrea (1986-) (gyógyszerész) Máthé Endre (1964-) (genetikus, molekuláris sejtbiológus) Szilvássy Zoltán (1957-) (belgyógyász, farmakológus, klinikai farmakológus) Gálné Remenyik Judit (1965-) (kémia tanár, okleveles vegyész)
Pályázati támogatás:	EFOP-3.6.2-16-2017-00009 EFOP
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM072717
035-os BibID:	(cikkazonosító)798 (scopus)85044144649 (wos)000428309800155
Első szerző:	Szabó Katalin (táplálkozástudományi szakember)
Cím:	Fenugreek (Trigonella Foenum-Graecum) Seed Flour and Diosgenin Preserve Endothelium-Dependent Arterial Relaxation in a Rat Model of Early-Stage Metabolic Syndrome / Katalin Szabó, Rudolf Gesztelyi, Nóra Lampé, Rita Kiss, Judit Remenyik, Georgina Pesti-Asbóth, Dániel Priksz, Zoltán Szilvássy, Béla Juhász
Dátum:	2018
ISSN:	1661-6596 1422-0067
Megjegyzések:	Fenugreek is a common herb possessing several bioactive components includingdiosgenin. Here, dietary fenugreek seed flour and diosgenin were evaluated on a model ofendothelium-dependent vasorelaxation by abdominal aortas isolated from rats receiving high-fat,high-sugar diet (HFHSD). 60 male Wistar rats were randomized into six groups: (i) negative controlgetting conventional rat feed regimen; (ii) positive control receiving HFHSD; (iii) a test group fed2 g/kg bw/day fenugreek seed flour (containing 10 mg/kg bw/day diosgenin) + HFHSD; (iv) threetest groups fed 1, 10 and 50 mg/kg bw/day diosgenin + HFHSD. Alimentary treatments werecarried out for six weeks. The abdominal aortas were isolated, and 2 mm wide rings were sectionedoff and mounted at a resting tension of 10 mN in organ baths containing Krebs solution (36 ?C)exposed to 95% O2 and 5% CO2. After 60-min incubation, a norepinephrine concentration-response(E/c) curve was generated to determine their half-maximal effective concentration (EC50) value.After 60-min wash-out, a pre-contraction with norepinephrine EC50 was made, followed by anacetylcholine E/c curve. Plasma glutathione levels, glutathione-handling enzyme activities and bloodantioxidant capacities were also determined. HFHSD significantly decreased the dilatory response toacetylcholine and increased plasma glutathione levels and these effects were significantly reversed byfenugreek seed flour, 10 and 50 mg/kg bw/day diosgenin. Both fenugreek and diosgenin treatmentsprevent HFHSD-induced endothelial dysfunction and redox changes. As fenugreek treatmentwas more effective at lower acetylcholine concentrations than diosgenin treatments, components offenugreek other than diosgenin may contribute to the beneficial effects of dietary fenugreek seed flour.
Tárgyszavak:	Orvostudományok Gyógyszerészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban endothelial dysfunction metabolic syndrome obesity type 2 diabetes mellitus fenugreek Trigonella foenum-graecum diosgenin endothelium-dependent vasorelaxation Wistar rat
Megjelenés:	International Journal of Molecular Sciences. - 19 : 3 (2018), p. 1-21. -
További szerzők:	Gesztelyi Rudolf (1969-) (kísérletes farmakológus) Lampé Nóra Kiss Rita (1974-) (laboratóriumi diagnosztika szakorvos) Gálné Remenyik Judit (1965-) (kémia tanár, okleveles vegyész) Pesti-Asbóth Georgina (1990-) (élelmiszerbiztonsági és -minőségi mérnök) Priksz Dániel (1989-) (farmakológus) Szilvássy Zoltán (1957-) (belgyógyász, farmakológus, klinikai farmakológus) Juhász Béla (1978-) (kísérletes farmakológus)
Pályázati támogatás:	GINOP-2.3.2-15-2016-00062 GINOP
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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