PMID- 29643431 OWN - NLM STAT- MEDLINE DCOM- 20191025 LR - 20220410 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 8 IP - 1 DP - 2018 Apr 11 TI - An estradiol-independent BDNF-NPY cascade is involved in the antidepressant effect of mechanical acupuncture instruments in ovariectomized rats. PG - 5849 LID - 10.1038/s41598-018-23824-2 [doi] LID - 5849 AB - Menopause-related depression devastates women's quality of life after middle age. Previous research has shown that estrogen hormone therapy has serious adverse effects; thus, complementary and integrative therapies have been considered clinically. The present study investigates whether stimulation of an acupoint using a mechanical acupuncture instrument (MAI) can mitigate depression-like behavior caused by estrogen deficiency in ovariectomized (OVX) rats. The animals were divided into Sham OVX, OVX, OVX + Sameumgyo (SP6) and OVX + NonAcu (non-acupuncture point) groups. MAI stimulation significantly increased the total distance traveled in the open-field test and the number of open-arm entries in the elevated plus maze and decreased the duration of immobility in the forced swim test. In addition to this decrease in depression-like behavior, brain-derived neurotrophic factor (BDNF) and neuropeptide Y (NPY) release increased in the hippocampus in response to MAI treatment, but estradiol levels did not recover. Furthermore, microinjection of the BDNF receptor antagonist ANA-12 (0.1 pmol/1 mul) into the hippocampus before MAI stimulation significantly suppressed the recovery of NPY levels. Taken together, these findings indicate that MAI stimulation at SP6 facilitates an estradiol-independent BDNF-NPY cascade, which may contribute to its antidepressant effects in OVX rats, an animal model of menopausal disorders. FAU - Seo, Su Yeon AU - Seo SY AD - Korea Institute of Oriental Medicine 1672 Yuseongdae-ro, Yuseong-gu, Daejeon, 34054, Republic of Korea. FAU - Moon, Ji-Young AU - Moon JY AD - Animal and Plant Quarantine Agency 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea. FAU - Kang, Suk-Yun AU - Kang SY AD - Korea Institute of Oriental Medicine 1672 Yuseongdae-ro, Yuseong-gu, Daejeon, 34054, Republic of Korea. FAU - Kwon, O Sang AU - Kwon OS AUID- ORCID: 0000-0001-5686-579X AD - Korea Institute of Oriental Medicine 1672 Yuseongdae-ro, Yuseong-gu, Daejeon, 34054, Republic of Korea. FAU - Kwon, Sunoh AU - Kwon S AD - Korea Institute of Oriental Medicine 1672 Yuseongdae-ro, Yuseong-gu, Daejeon, 34054, Republic of Korea. FAU - Bang, Se Kyun AU - Bang SK AD - Korea Institute of Oriental Medicine 1672 Yuseongdae-ro, Yuseong-gu, Daejeon, 34054, Republic of Korea. FAU - Kim, Soo Phil AU - Kim SP AD - Korea Institute of Oriental Medicine 1672 Yuseongdae-ro, Yuseong-gu, Daejeon, 34054, Republic of Korea. FAU - Choi, Kwang-Ho AU - Choi KH AD - Korea Institute of Oriental Medicine 1672 Yuseongdae-ro, Yuseong-gu, Daejeon, 34054, Republic of Korea. FAU - Ryu, Yeonhee AU - Ryu Y AD - Korea Institute of Oriental Medicine 1672 Yuseongdae-ro, Yuseong-gu, Daejeon, 34054, Republic of Korea. yhryu@kiom.re.kr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180411 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Bdnf protein, rat) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Neuropeptide Y) RN - 4TI98Z838E (Estradiol) SB - IM MH - *Acupuncture Points MH - Animals MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Depression/etiology/metabolism/psychology/*therapy MH - Disease Models, Animal MH - Estradiol/metabolism MH - Female MH - Hippocampus/metabolism MH - Humans MH - Menopause/metabolism/*psychology MH - Neuropeptide Y/*metabolism MH - Ovariectomy/adverse effects MH - Rats MH - Treatment Outcome PMC - PMC5895789 COIS- The authors declare no competing interests. EDAT- 2018/04/13 06:00 MHDA- 2019/10/28 06:00 PMCR- 2018/04/11 CRDT- 2018/04/13 06:00 PHST- 2017/07/13 00:00 [received] PHST- 2018/03/19 00:00 [accepted] PHST- 2018/04/13 06:00 [entrez] PHST- 2018/04/13 06:00 [pubmed] PHST- 2019/10/28 06:00 [medline] PHST- 2018/04/11 00:00 [pmc-release] AID - 10.1038/s41598-018-23824-2 [pii] AID - 23824 [pii] AID - 10.1038/s41598-018-23824-2 [doi] PST - epublish SO - Sci Rep. 2018 Apr 11;8(1):5849. doi: 10.1038/s41598-018-23824-2.