Počet záznamů: 1
Lipidized prolactin-releasing peptide improved glucose tolerance in metabolic syndrome: Koletsky and spontaneously hypertensive rat study
- 1.
SYSNO ASEP 0489814 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Lipidized prolactin-releasing peptide improved glucose tolerance in metabolic syndrome: Koletsky and spontaneously hypertensive rat study Tvůrce(i) Mikulášková, Barbora (FGU-C)
Holubová, M. (CZ)
Pražienková, V. (CZ)
Zemenová, J. (CZ)
Hrubá, L. (CZ)
Haluzík, M. (CZ)
Železná, B. (CZ)
Kuneš, Jaroslav (FGU-C) RID, ORCID
Maletínská, L. (CZ)Číslo článku 5 Zdroj.dok. Nutrition & Diabetes. - : Springer - ISSN 2044-4052
Roč. 8, Jan 16 (2018)Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova leptin receptor ; therapeutic actions ; nonsense mutation ; insulin ; model ; obesity Vědní obor RIV ED - Fyziologie Obor OECD Physiology (including cytology) CEP GA15-08679S GA ČR - Grantová agentura ČR Institucionální podpora FGU-C - RVO:67985823 UT WOS 000425644700001 EID SCOPUS 85040834352 DOI 10.1038/s41387-017-0015-8 Anotace Prolactin-releasing peptide (PrRP) has a potential to decrease food intake and ameliorate obesity, but is ineffective after peripheral administration. We have previously shown that our novel lipidized analogs PrRP enhances its stability in the circulation and enables its central effect after peripheral application. The purpose of this study was to explore if sub-chronic administration of novel PrRP analog palmitoylated in position 11 (palm(11)-PrRP31) to Koletsky-spontaneously hypertensive obese rats (SHROB) could lower body weight and glucose intolerance as well as other metabolic parameters. The SHROB rats (n = 16) were used for this study and age-matched hypertensive lean SHR littermates (n = 16) served as controls. Palm(11) -PrRP31 was administered intraperitoneally to SHR and SHROB (n = 8) at a dose of 5mg/kg once-daily for 3 weeks. During the dosing period food intake and body weight were monitored. At the end of the experiment the oral glucose tolerance test was performed, plasma and tissue samples were collected. Thereafter, arterial blood pressure was measured. At the end of the experiment, vehicle-treated SHROB rats showed typical metabolic syndrome parameters, including obesity, glucose intolerance, dyslipidemia, and hypertension. Peripheral treatment with palm(11)-PrRP31 progressively decreased the body weight of SHR rats but not SHROB rats, though glucose tolerance was markedly improved in both strains. Moreover, in SHROB palm(11)-PrRP31 ameliorated the HOMA index, insulin/glucagon ratio, and increased insulin receptor substrate 1 and 2 expression in fat and insulin signaling in the hypothalamus, while it had no effect on blood pressure. We demonstrated that our new lipidized PrRP analog is capable of improving glucose tolerance in obese SHROB rats after peripheral application, suggesting that its effect on glucose metabolism is independent of leptin signaling and body weight lowering. These data suggest that this analog has the potential to be a compound with both anti-obesity and glucose-lowering properties. Pracoviště Fyziologický ústav Kontakt Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400 Rok sběru 2019
Počet záznamů: 1