Evidence map›Paper›PMID 31328099›Full record

ArticleGland surgery2019

The effect of intrathyroidal versus intraperitoneal bevacizumab on thyroid volume and vasculature flow in a rat model.

Aaron Smith, Vikrum Thimmappa, John D Boughter, Christopher Vanison, Courtney B Shires, Merry Sebelik

Open access · diamondAbstract read
In one paragraph

Article in Gland surgery, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.3field-weighted citation impact, top 38% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. Article
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 2 institutions in 1 country.

Aaron SmithDepartment of Otolaryngology, Head & Neck Surgery, University of Tennessee Health Science Center, Memphis, TN, USA.
Vikrum ThimmappaDepartment of Otolaryngology, Head & Neck Surgery, University of Tennessee Health Science Center, Memphis, TN, USA.
John D BoughterDepartment of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, USA.
Christopher VanisonDepartment of Otolaryngology, Head & Neck Surgery, University of Tennessee Health Science Center, Memphis, TN, USA.
Courtney B ShiresDepartment of Otolaryngology, Head & Neck Surgery, University of Tennessee Health Science Center, Memphis, TN, USA.
Merry SebelikDepartment of Otolaryngology, Head & Neck Surgery, Emory University, Atlanta, GA, USA.
University of Tennessee Health Science Center · USEmory University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSeveral clinical conditions increase thyroid gland vascularity, impacting surgical blood loss. Bevacizumab has been observed to reduce thyroid function, possibly through its effect on gland angiogenesis. This study aimed to determine if bevacizumab has any effect on thyroid vascularity as measured by gland volume and superior thyroid artery (STA) flow velocity in the normal rat thyroid.

methodsSixteen adult female Sprague-Dawley rats were placed under general anesthesia to measure baseline thyroid gland characteristics. A Vevo 2100 high-frequency ultrasound with 40 mHz transducer was used to obtain STA flow measurements and thyroid gland dimensions. Four rats served as controls. Six rats received intrathyroidal (IT) injections and 6 received intraperitoneal (IP) injections of bevacizumab (4-5 mg/kg). After two weeks ultrasound measurements were repeated.

resultsPretreatment animals displayed similar thyroid volume and vascularity. Thyroid volume decreased (62.583

conclusionsSingle systemic administration of bevacizumab appears to decrease thyroid volume without an effect on STA flow, VEGF or CD31 staining. These preliminary findings support further study of pharmacologic intervention in thyroid conditions characterized by increased angiogenesis and vascularity, such as iodine deficiency, Graves disease, and hypothyroidism.

Indexed as

Bevacizumabthyroidultrasound

Identifiers

PMID31328099
PMCPMC6606475
OpenAlexW2896550817

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.