Evidence map›Paper›PMID 42549761›Full record

ArticleCNS neuroscience & therapeutics2026

An Olfactory Piriform Cortex-Lateral Hypothalamus Neural Circuit Contributes to Linalool-Induced Analgesia.

Yunhe Zhu, Jingping Sun, Shan Wang, Qidong Zhang, Jian Mao, Guobi Chai, Qingzhao Shi, Wu Fan, Jianping Xie

Abstract read
In one paragraph

Article in CNS neuroscience & therapeutics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Yunhe ZhuCollege of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.ORCID https://orcid.org/0000-0003-4188-4925
Jingping SunZhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, China.
Shan WangCollege of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.ORCID https://orcid.org/0009-0002-9028-0108
Qidong ZhangCollege of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.
Jian MaoCollege of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.ORCID https://orcid.org/0000-0002-2732-3403
Guobi ChaiCollege of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.ORCID https://orcid.org/0009-0003-7103-3635
Qingzhao ShiCollege of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.ORCID https://orcid.org/0000-0002-2022-9967
Wu FanCollege of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.ORCID https://orcid.org/0009-0008-2280-0005
Jianping XieCollege of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.

Funding

National Natural Science Foundation of China 32072344National Natural Science Foundation of China 32130083Scientific and Technological Project of CNTC 110202102001Scientific and Technological Project of CNTC 110202403006Scientific Research Program of Innovation Platform in State Tobacco Monopoly Administration 402021AWCX06
6 · The paper itself

Abstract

aimsAromatherapy-mediated analgesia is widely applied, but the underlying neural mechanisms remain poorly understood. This study aimed to investigate the neurobiological basis underlying linalool-induced attenuation of inflammatory pain.

methodsA complete Freund's adjuvant (CFA)-induced hind-paw inflammatory pain model was used to evaluate the antinociceptive effects of linalool odor exposure through mechanical and thermal nociceptive threshold tests, together with conditioned place preference. Viral tracing, in vivo fiber photometry, electrophysiological recordings, and chemogenetic or optogenetic manipulations were employed to identify and functionally characterize the neural circuits underlying linalool-induced analgesia.

resultsLinalool odor exposure increased mechanical and thermal nociceptive thresholds and induced pain relief-associated place preference in CFA mice. Linalool exposure activated orexin A-expressing neurons in the lateral hypothalamus (LH

conclusionOur study identified an olfactory cortex-hypothalamic circuit contributing to linalool-induced antinociceptive effects, providing mechanistic insight into olfactory modulation of inflammatory pain.

Indexed as

Acyclic MonoterpenesAnalgesiaAnalgesicsHypothalamic Area, LateralPiriform CortexAnimalsMaleMiceMice, Inbred C57BLNeural PathwaysPainAcyclic MonoterpenesAnalgesicslinaloolaromatherapylateral hypothalamuslinaloolneural circuitpainpiriform cortex

Identifiers

PMID42549761
PMCPMC13435369

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.