Abstract：
:Neurokinin B (NKB) is a hypothalamic neuropeptide binding preferentially to the neurokinin 3 receptor. Expression of the gene encoding NKB is elevated in postmenopausal women. Furthermore, rodent studies suggest that NKB signalling may mediate menopausal hot flushes. However, the effects of NKB administration on hot flushes have not been investigated in humans. To address this, we performed a randomised, double-blinded, placebo-controlled, 2-way cross-over study. Ten healthy women were admitted to a temperature and humidity-controlled research unit. Participants received 30 minute intravenous infusions of NKB and vehicle in random order. Symptoms, heart rate, blood pressure, sweating and skin temperature were compared between NKB and vehicle in a double-blinded manner. Eight of ten participants experienced flushing during NKB infusion with none experiencing flushing during vehicle infusion (P = 0.0007). Significant elevations in heart rate (P = 0.0106 vs. pre-symptoms), and skin temperature measured using skin probe (P = 0.0258 vs. pre-symptoms) and thermal imaging (P = 0.0491 vs. pre-symptoms) characteristic of menopausal flushing were observed during hot flush episodes. Our findings provide evidence that NKB administration can cause hot flushes in women. Further studies are required to determine if pharmacological blockade of NKB signalling could inhibit hot flushes during the menopause and during treatment for sex-steroid dependent cancers.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Jayasena CN,Comninos AN,Stefanopoulou E,Buckley A,Narayanaswamy S,Izzi-Engbeaya C,Abbara A,Ratnasabapathy R,Mogford J,Ng N,Sarang Z,Ghatei MA,Bloom SR,Hunter MS,Dhillo WSdoi
10.1038/srep08466subject
Has Abstractpub_date
2015-02-16 00:00:00pages
8466issn
2045-2322pii
srep08466journal_volume
5pub_type
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