Evidence map›Paper›PMID 22673618›Full record

ArticleAmerican journal of physiology. Cell physiology2012

Hyperthermia increases interleukin-6 in mouse skeletal muscle.

Steven S Welc, Neil A Phillips, Jose Oca-Cossio, Shannon M Wallet, Daniel L Chen, Thomas L Clanton

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Cell physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
6.4field-weighted citation impact, top 3% 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

40 citing papers in PubMed, 84 citations in OpenAlex.

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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 1 institution in 1 country.

Steven S WelcDepartment of Applied Physiology & Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, USA.
Neil A Phillips
Jose Oca-Cossio
Shannon M Wallet
Daniel L Chen
Thomas L Clanton
University of Florida · US

Funding

UF Clinical and Translational Science AwardUL1TR000064 · NCATS · UNIVERSITY OF FLORIDA · PI NELSON, DAVID R · 2012 to 2014
$12.2M
REDOX MECHANISMS OF RESPIRATORY MUSCLE STRESS ADAPTATIONR01HL053333 · NHLBI · UNIVERSITY OF FLORIDA · PI CLANTON, THOMAS LINDSAY · 1995 to 2009
$2.9M
NCATS NIH HHS UL1 TR000064NHLBI NIH HHS R01HL-053333
6 · The paper itself

Abstract

Skeletal muscles produce and contribute to circulating levels of IL-6 during exercise. However, when core temperature is reduced, the response is attenuated. Therefore, we hypothesized that hyperthermia may be an important and independent stimulus for muscle IL-6. In cultured C2C12 myotubes, hyperthermia (42°C) increased IL-6 gene expression 14-fold after 1 h and 35-fold after 5 h of 37°C recovery; whereas exposure to 41°C resulted in a 2.6-fold elevation at 1 h. IL-6 protein was secreted and significantly elevated in the cell supernatant. Similar but reduced responses to heat were seen in C2C12 myoblasts. Isolated soleus muscles from mice, exposed ex vivo to 41°C for 1 h, yielded similar IL-6 gene responses (>3-fold) but without a significant effect on protein release. When whole animals were exposed to passive hyperthermia, such that core temperature increased to 42.4°C, IL-6 mRNA in soleus increased 5.4-fold compared with time matched controls. Interestingly, TNF-α gene expression was routinely suppressed at all levels of hyperthermia (40.5-42°C) in the isolated models, but TNF-α was elevated (4.2-fold) in the soleus taken from intact mice exposed, in vivo, to hyperthermia. Muscle HSP72 mRNA increased as a function of the level of hyperthermia, and IL-6 mRNA responses increased proportionally with HSP72. In cultured C2C12 myotubes, when heat shock factor was pharmacologically blocked with KNK437, both HSP72 and IL-6 mRNA elevations, induced by heat, were suppressed. These findings implicate skeletal muscle as a "heat stress sensor" at physiologically relevant hyperthermia, responding with a programmed cytokine expression pattern characterized by elevated IL-6.

Indexed as

AnimalsCells, CulturedFeverGene Expression RegulationHSP72 Heat-Shock ProteinsInterleukin-6MaleMiceMuscle Fibers, SkeletalMuscle, SkeletalReal-Time Polymerase Chain ReactionRNA, MessengerTumor Necrosis Factor-alphaHSP72 Heat-Shock ProteinsInterleukin-6RNA, MessengerTumor Necrosis Factor-alpha

Identifiers

PMID22673618
PMCPMC3422986
OpenAlexW2114415214

What OpenQuestion holds

Textmetadata
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.