Výsledky vyhledávání - "Katarzyna Kirsz"

Akademický článek

Seasonal and nutritional changes in the short form of the leptin receptor expression and VEGF system in the choroid plexus, arcuate nucleus, and anterior pituitary in MTS-leptin and resistin-treated sheep

Autor: Dorota Anna Zieba, Weronika Biernat, Malgorzata Szczesna, Katarzyna Kirsz, Tomasz Misztal

Publikováno v: Frontiers in Neuroscience, Vol 17 (2023)

The short form of the leptin receptor (LeptRa) plays a key role in the transport of leptin to the central nervous system (CNS). Here, MTS-leptin and recombinant ovine (ro) leptin-mediated expression of LeptRa and VEGFA and VEGFR2 concentration in sel

Externí odkaz: https://doaj.org/article/93a90a319c1f4687b61ae5ff7ae06a82

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Akademický článek

Effects of Leptin, Growth Hormone and Photoperiod on Pituitary SOCS-3 Expression in Sheep

Autor: Dorota Anna Zieba, Malgorzata Szczesna, Katarzyna Kirsz, Weronika Biernat

Publikováno v: Animals, Vol 12, Iss 3, p 403 (2022)

This study examined how leptin affects growth hormone (GH) release and investigated the effects of leptin, GH, and day length on the suppressor of cytokine signaling-3 (SOCS-3) mRNA levels in the adenohypophyses of sheep. The study consisted of two e

Externí odkaz: https://doaj.org/article/f6278f9121974399bf0318127482738e

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Akademický článek

Seasonal and Nutritional Fluctuations in the mRNA Levels of the Short Form of the Leptin Receptor (LRa) in the Hypothalamus and Anterior Pituitary in Resistin-Treated Sheep

Autor: Weronika Biernat, Malgorzata Szczęsna, Katarzyna Kirsz, Dorota Anna Zieba

Publikováno v: Animals, Vol 11, Iss 8, p 2451 (2021)

The short form of the leptin receptor (LRa) plays a key role in the transport of leptin to the central nervous system (CNS). Here, the resistin (RSTN)-mediated expression of LRa in the preoptic area (POA), ventromedial and dorsomedial nuclei (VMH/DMH

Externí odkaz: https://doaj.org/article/3e63a969ba1544e9ac902c2e4c9a5ced

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Seasonal and Nutritional Fluctuations in the mRNA Levels of the Short Form of the Leptin Receptor (LRa) in the Hypothalamus and Anterior Pituitary in Resistin-Treated Sheep

Autor: Katarzyna Kirsz, Malgorzata Szczesna, Weronika Biernat, Dorota A. Zieba

Publikováno v: Animals
Volume 11
Issue 8
Animals, Vol 11, Iss 2451, p 2451 (2021)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a396ef8da51d051213b001dd9b686b9a

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Pregnancy‐induced changes in the transcript levels of prolactin receptor and its suppressor in the ovine hypothalamus and adenohypophysis

Autor: Katarzyna Kirsz, Malgorzata Szczesna, Tomasz Misztal, Dorota A. Zieba

Publikováno v: Reproduction in Domestic Animals. 55:21-28

The aim of this study was to analyse changes in the abundance of prolactin (PRL) receptor (PRLR) and suppressor of cytokine signalling-3 (SOCS-3) mRNA in the ventro-/dorsomedial nucleus (VMH/DMH) and arcuate nucleus (ARC) of the hypothalamus as well

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25e705c15573e442359f2c5266810f17
https://doi.org/10.1111/rda.13576

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Effects of central orexin A on gonadotropins and progesterone secretion in ewes during the luteal phase of the estrous cycle and during anestrus

Autor: Dorota A. Zięba, Malgorzata Szczesna, Aneta Bocheńska, Katarzyna Kirsz, Natalia Kabała, Natalia Sowińska, Agnieszka Pietsch-Fulbiszewska

Publikováno v: Small Ruminant Research. 177:82-88

Prior studies, mainly on rodents demonstrated that orexin A (OXA) plays an important role in regulating the hypothalamo-pituitary-gonadal (HPG) axis. However, the results of those works have indicated that the central impact of OXA on the HPG axis ma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9699a15e01bd793d6033835489f1af56
https://doi.org/10.1016/j.smallrumres.2019.06.021

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Downregulation of LRb in VMH/DMH during the second half of gestation and upregulation of SOCS-3 in ARC in late-pregnant ewes – Implications for leptin resistance

Autor: Tomasz Misztal, Dorota A. Zieba, Katarzyna Kirsz, Malgorzata Szczesna

Publikováno v: General and Comparative Endocrinology. 274:73-79

To investigate factors involved in pregnancy-induced regulation of tissue sensitivity to leptin, we determined leptin concentrations and expression levels of the long form of the leptin receptor (LRb) and suppressor of cytokine signalling (SOCS)-3 in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ba5fcfdac850d2580a08afbc89ca028
https://doi.org/10.1016/j.ygcen.2019.01.003

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Changes in Expression of the Genes for the Leptin Signaling in Hypothalamic-Pituitary Selected Areas and Endocrine Responses to Long-Term Manipulation in Body Weight and Resistin in Ewes

Autor: Katarzyna Kirsz, Malgorzata Szczesna, Weronika Biernat, Tomasz Misztal, Justyna Barć, Dorota A. Zieba

Publikováno v: International Journal of Molecular Sciences
International Journal of Molecular Sciences, Vol 21, Iss 4238, p 4238 (2020)
Volume 21
Issue 12

Both long-term undernutrition and overnutrition disturb metabolic balance, which is mediated partially by the action of two adipokines, leptin and resistin (RSTN). In this study, we manipulated the diet of ewes to produce either a thin (lean) or fat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f554d5b3042613de829a432fe3f50a3
https://pubmed.ncbi.nlm.nih.gov/32545900

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Transcript abundances of the prolactin receptor, the leptin receptor and their major suppressor in the sheep mammary gland during pregnancy and lactation

Autor: Dorota A. Zieba, Katarzyna Kirsz, Malgorzata Szczesna, Michał Nowakowski

This study aimed to expand the knowledge of the interactions between prolactin (PRL) and leptin in the ovine mammary gland during pregnancy and lactation; we examined the mRNA expression of prolactin receptor (PRLR), the long form of the leptin recep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa290ab9df5c98e9ce67cf8a03d4ec2c
https://ruj.uj.edu.pl/xmlui/handle/item/264433

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Induction of the Secretion of LH and GH by Orexin A and Ghrelin is Controlled in Vivo by Leptin and Photoperiod in Sheep

Autor: Katarzyna Kirsz, Malgorzata Szczesna, Tomasz Misztal, Edyta Molik, Dorota A. Zieba

Publikováno v: Annals of Animal Science. 17:155-168

The influence of leptin on orexin A and the interaction of leptin with ghrelin in regulating the gonadotropic and somatotropic axes in seasonally polyestrous animals are not well understood. This study examined the effects of these factors as well as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4882df3e4c7677bf79b81a0066b1d69
https://doi.org/10.1515/aoas-2016-0041

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