Evidence map›Paper›PMID 32888263›Full record

ArticleJournal of biomedical optics2020

Photoacoustics resolves species-specific differences in hemoglobin concentration and oxygenation.

Lina Hacker, Joanna Brunker, Ewan St John Smith, Isabel Quiros-Gonzalez, Sarah E Bohndiek

Open access · goldAbstract read
In one paragraph

Article in Journal of biomedical optics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.1field-weighted citation impact, top 24% 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

13 citing papers in PubMed, 24 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

5 authors at 2 institutions in 2 countries.

Lina HackerUniversity of Cambridge, Department of Physics, Cambridge, United Kingdom.
Joanna BrunkerUniversity of Cambridge, Department of Physics, Cambridge, United Kingdom.
Ewan St John SmithUniversity of Cambridge, Department of Pharmacology, Cambridge, United Kingdom.
Isabel Quiros-GonzalezUniversity of Cambridge, Department of Physics, Cambridge, United Kingdom.
Sarah E BohndiekUniversity of Cambridge, Department of Physics, Cambridge, United Kingdom.
University of Cambridge · GBCancer Research UK · GB

Funding

Cancer Research UK 16267Cancer Research UK 16465Cancer Research UK 21142Cancer Research UK 22053Cancer Research UK C14303/A17197Cancer Research UK C197/A16465Cancer Research UK C47594/A16267Cancer Research UK C56829/A22053Cancer Research UK C9545/A29580
6 · The paper itself

Abstract

significancePhotoacoustic imaging (PAI) enables the detection of blood hemoglobin (HB) concentration and oxygenation (sO2) with high contrast and resolution. Despite the heavy use of photoacoustically determined total hemoglobin (THb) and oxygenation (sO2) biomarkers in PAI research, their relationship with underlying biochemical blood parameters and the impact of intra- and interspecies genetic variability have yet to be established.

aimTo explore the relationship between THb and sO2 photoacoustic biomarkers and the underlying biochemical blood parameters in a species-specific manner. APPROACH: Experiments were performed on blood in vitro using tissue-mimicking agar phantoms. Blood was extracted from mouse, rat, human, and naked mole-rat (Heterocephalus glaber), anticoagulated in ethylenediaminetetraacetic acid, and measured within 48 h. THb and sO2 were measured using a commercial photoacoustic tomography system (InVision 128, iThera Medical GmBH). Biochemical blood parameters such as HB concentration (g/dL), hematocrit (HCT, %), and red blood cell (RBC) count (μL  -  1) were assessed using a hematology analyzer (Mythic 18 Vet, Woodley Equipment).

resultsA significant correlation was observed between THb and biochemical HB, HCT, and RBC in mouse and rat blood. Moreover, PAI accurately recapitulated interspecies variations in HB and HCT between mouse and rat blood and resolved differences in the oxygen dissociation curves measured using sO2 between human, mouse, and rat. With these validation data in hand, we applied PAI to studies of blood obtained from naked mole-rats and could confirm the high oxygen affinity of this species in comparison to other rodents of similar size.

conclusionsOur results demonstrate the high sensitivity of photoacoustically determined hemoglobin biomarkers toward species-specific variations in vitro.

Indexed as

HemoglobinsOxygenAnimalsErythrocyte CountHumansMicePhantoms, ImagingRatsSpectrum AnalysisHemoglobinsOxygenhemoglobinoxygenationphantomphotoacoustic imaging

Identifiers

PMID32888263
PMCPMC7471783
OpenAlexW3083645815

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.