PHYSIOPATHOLOGICAL EFFECTS OF PHOENIXIN

Yıl 2023, Cilt: 4 Sayı: Ek Sayı, 258 - 265, 16.10.2023

Muhammed Taşar , Raziye Akcılar

Öz

Phoenixin (PNX) is a newly discovered endogenous neuropeptide produced from small integral
membrane protein 20 (Smim20). The most common isoforms are PNX-14 and PNX-20 amino acid
peptides. PNX, a ligand of G protein-coupled receptor 173 (GPR173), has been isolated mainly
from brain regions such as the hypothalamus and pituitary gland, and from many peripheral tissues.
PNX plays an important role in the regulation of reproductive function by increasing the level of
gonadotropin-releasing hormone and stimulating the release of luteinizing hormone from the
pituitary cells. However, PNX not only regulates the reproductive system, but also exerts anxiolytic,
anti-inflammatory and cell-protective effects. In addition, it has many functions in the regulation of
behavior, food intake, sensory perception, memory, body fluid balance, cardiovascular functions
and energy metabolism. This review will help us to understand the molecular structure of PNX, its
physiological effects and functions on systems, and its role in the pathogenesis and treatment
processes of various diseases.

Anahtar Kelimeler

Phoenixin, Neuropeptide, GPR173, Smim20

PHOENİXİN’İN FİZYOPATOLOJİK ETKİLERİ

Öz

Phoenixin (PNX), küçük integral membran protein 20’den (Smim20) üretilen yeni keşfedilmiş
endojen bir nöropeptittir. En yaygın izoformları PNX-14 ve PNX-20 aminoasit peptitleridir. G
proteinine bağlı reseptör 173’ün (GPR173) bir ligandı olan PNX, temel olarak hipotalamus ve
hipofiz bezi gibi beyin bölgesinden ve birçok periferal dokudan izole edilmiştir. PNX, gonadotropin
salgılayan hormon (GnRH) seviyesini artırarak hipofiz hücrelerinden lüteinize edici hormon (LH)
salınımını uyararak üreme işlevinin düzenlenmesinde önemli bir rol oynar. Bununla birlikte, PNX
sadece üreme sistemini düzenlemekle kalmaz, aynı zamanda anksiyolitik, anti-inflamatuar ve hücre
koruyucu etkiler de gösterir. Ayrıca davranış, gıda alımı, duyusal algı, hafıza, vücut sıvısı dengesi,
kardiyovasküler fonksiyonlar ve enerji metabolizmasının düzenlenmesinde birçok işlevi
bulunmaktadır. Bu derleme, PNX’in moleküler yapısı, sistemler üzerindeki fizyolojik etki ve
işlevleri ile çeşitli hastalıkların patogenezinde ve tedavi süreçlerindeki rolünü anlamada bize
yardımcı olacaktır.

Anahtar Kelimeler

Phoenixin, Nöropeptid, GPR173, Smim20

Kaynakça

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