Evidence map›Paper›PMID 25774550›Full record

ArticleEndocrinology2015

The effects of short-term and long-term testosterone supplementation on blood viscosity and erythrocyte deformability in healthy adult mice.

Wen Guo, Eric Bachman, Johannes Vogel, Michelle Li, Liming Peng, Karol Pencina, Carlo Serra, Nicolae L Sandor, Ravi Jasuja, Monty Montano and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.8field-weighted citation impact, top 14% 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

14 citing papers in PubMed, 26 citations in OpenAlex.

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  14. [Prevention and treatment of drug-related stroke].Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2015
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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

13 authors at 4 institutions in 2 countries.

Wen GuoResearch Program in Men's Health: Aging and Metabolism (W.G., M.L., L.P., K.P., C.S., N.L.S., R.J., M.M., S.Ba., S.Bh.), Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Alexion Pharmaceuticals (E.B.), Cambridge, Massachusetts 02142; and Institute of Veterinary Physiology (J.V., M.G.), University of Zürich, CH-8057 Zürich, Switzerland.
Eric Bachman
Johannes Vogel
Michelle Li
Liming Peng
Karol Pencina
Carlo Serra
Nicolae L Sandor
Ravi Jasuja
Monty Montano
Shehzad Basaria
Max Gassmann
Shalender Bhasin
Harvard University · USBrigham and Women's Hospital · USUniversity of Zurich · CHAlexion Pharmaceuticals (United States) · US

Funding

Mechanisms of Testosterone ActionR01AG037193 · NIA · BRIGHAM AND WOMEN'S HOSPITAL · PI BHASIN, SHALENDER · 2010 to 2014
$2.2M
NIA NIH HHS R01 AG037193NIA NIH HHS R01AG037193
6 · The paper itself

Abstract

Testosterone treatment induces erythrocytosis that could potentially affect blood viscosity and cardiovascular risk. We thus investigated the effects of testosterone administration on blood viscosity and erythrocyte deformability using mouse models. Blood viscosity, erythrocyte deformability, and hematocrits were measured in normal male and female mice, as well as in females and castrated males after short-term (2 wk) and long-term (5-7 mo) testosterone intervention (50 mg/kg, weekly). Castrated males for long-term intervention were studied in parallel with the normal males to assess the effect of long-term testosterone deprivation. An additional short-term intervention study was conducted in females with a lower testosterone dose (5 mg/kg). Our results indicate no rheological difference among normal males, females, and castrated males at steady-state. Short-term high-dose testosterone increased hematocrit and whole-blood viscosity in both females and castrated males. This effect diminished after long-term treatment, in association with increased erythrocyte deformability in the testosterone-treated mice, suggesting the presence of adaptive mechanism. Considering that cardiovascular events in human trials are seen early after intervention, rheological changes as potential mediator of vascular events warrant further investigation.

Indexed as

AndrogensAnimalsBlood ViscosityErythrocyte DeformabilityErythrocytesFemaleMaleMiceMice, Inbred C57BLOrchiectomyTestosteroneTime FactorsAndrogensTestosterone

Identifiers

PMID25774550
PMCPMC4398764
OpenAlexW2041106582

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.