Evidence map›Paper›PMID 22136466›Full record

ArticleLipids in health and disease2011

Endurance exercise is a leptin signaling mimetic in hypothalamus of Wistar rats.

Jiexiu Zhao, Ye Tian, Jincheng Xu, Dongsen Liu, Xiaofang Wang, Binxiu Zhao

Open access · goldAbstract read
In one paragraph

Article in Lipids in health and disease, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
1.9field-weighted citation impact, top 16% of its field
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

23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 51 citations in OpenAlex.

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  14. STAT3 in Skeletal Muscle Function and Disorders.International journal of molecular sciences · 2018
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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

6 authors at 4 institutions in 2 countries.

Jiexiu ZhaoSport Biological Center, China Institute of Sport Science, Beijing 100061, PR China.
Ye Tian
Jincheng Xu
Dongsen Liu
Xiaofang Wang
Binxiu Zhao
Beijing Sport University · CNChina Institute of Sport Science · CNFirst Hospital of Shijiazhuang · CNTexas A&M University System · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEndurance exercise is known to promote a substantial effect on the energy balance in rats and humans. However, little is known about the exact mechanisms for the appetite-suppressive effects of endurance exercise. We hypothesized that endurance training might activate signaling cascades in the hypothalamus known to be involved in leptin signaling.

methods16 male Wistar rats were randomly assigned to two groups: sedentary (n = 8) and exercise groups (n = 8). Animals in the exercise group started treadmill running at 30 m/min, 0% grade, for 1 min/bout. Running time was gradually increased by 2 min/bout every day. The training plan was one bout per day during initial two weeks, and two bouts per day during 3rd-9th week. At the end of nine-week experiment, blood was analyzed for low-density lipoprotein cholesterol (LDL-C), triglyceride (TG), total cholesterol (TC), free fatty acid (FFA), interleukin (IL)-6, and leptin in both groups. Activations of janus kinase 2-signaling transducer and activator of transcription 3 (JAK2-STAT3), protein kinase B (Akt), extracellular regulated kninase (ERKs), and suppressor of cytokine signaling 3 (SOCS3) in hypothalamus were measured in the end of nine weeks of exercise protocol.

resultsNine-week endurance exercise induced lower concentrations of LDL-C, TG, TC, FFA, and leptin in rats (P < 0.05 or P < 0.01). Nine-week endurance exercise significantly increased the circulating IL-6 concentration compared with sedentary group (239.6 ± 37.2 pg/ml vs. 151.8 ± 31.5 pg/ml, P < 0.01). Exercise rats showed significant increases in JAK2, STAT3, Akt, ERKs, and SOCS3 phosphorylations compared with sedentary rats (P < 0.01).

conclusionThe data suggest that endurance exercise is a leptin signaling mimetic in hypothalamus of Wistar rats.

Indexed as

Physical Conditioning, AnimalSignal TransductionAnimalsCholesterol, LDLExtracellular Signal-Regulated MAP KinasesFatty Acids, NonesterifiedHypothalamusJanus Kinase 2LeptinLipid MetabolismMalePhosphorylationProto-Oncogene Proteins c-aktRandom AllocationRatsRats, WistarCholesterol, LDLExtracellular Signal-Regulated MAP KinasesFatty Acids, NonesterifiedJak2 protein, ratJanus Kinase 2LeptinProto-Oncogene Proteins c-aktSocs3 protein, ratStat3 protein, ratSTAT3 Transcription FactorSuppressor of Cytokine Signaling 3 ProteinSuppressor of Cytokine Signaling ProteinsTriglycerides

Identifiers

PMID22136466
PMCPMC3248031
OpenAlexW2107797697

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.