Evidence map›Paper›PMID 33498971›Full record

ArticleInternational journal of molecular sciences2021

Model of Chronic Thromboembolic Pulmonary Hypertension in Rats Caused by Repeated Intravenous Administration of Partially Biodegradable Sodium Alginate Microspheres.

Andrei A Karpov, Nikita A Anikin, Aleksandra M Mihailova, Sergey S Smirnov, Dariya D Vaulina, Leonid A Shilenko, Dmitry Yu Ivkin, Alexei Y Bagrov, Olga M Moiseeva, Michael M Galagudza

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.6field-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

11 citing papers in PubMed, 23 citations in OpenAlex.

  1. Animal models of chronic thromboembolic pulmonary hypertension.Animal models and experimental medicine · 2026
    Review
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  10. Hard, Soft, and Hard-Pharmaceutics · 2022
    Review
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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

10 authors at 4 institutions in 1 country.

Andrei A KarpovAlmazov National Medical Research Centre, 197341 St-Petersburg, Russia.
Nikita A AnikinAlmazov National Medical Research Centre, 197341 St-Petersburg, Russia.
Aleksandra M MihailovaAlmazov National Medical Research Centre, 197341 St-Petersburg, Russia.
Sergey S SmirnovAlmazov National Medical Research Centre, 197341 St-Petersburg, Russia.
Dariya D VaulinaAlmazov National Medical Research Centre, 197341 St-Petersburg, Russia.
Leonid A ShilenkoAlmazov National Medical Research Centre, 197341 St-Petersburg, Russia.ORCID 0000-0002-1002-9419
Dmitry Yu IvkinSaint Petersburg State Chemical Pharmaceutical University, 197376 St. Petersburg, Russia.
Alexei Y BagrovSechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, 194223 Saint-Petersburg, Russia.
Olga M MoiseevaAlmazov National Medical Research Centre, 197341 St-Petersburg, Russia.
Michael M GalagudzaAlmazov National Medical Research Centre, 197341 St-Petersburg, Russia.
Federal Almazov North-West Medical Research Centre · RUFirst Pavlov State Medical University of St. Petersburg · RUInstitute of Evolutionary Physiology and Biochemistry · RUSaint - Petersburg State Chemical Pharmaceutical Academy · RU

Funding

Ministry of Science and Higher Education of the Russian Federation 075-15-2020-800
6 · The paper itself

Abstract

Chronic thromboembolic pulmonary hypertension (CTEPH) is a rare and life-threatening complication of pulmonary embolism. As existing animal models of CTEPH do not fully recapitulate complex disease pathophysiology, we report a new rat model for CTEPH evoked by repetitive embolization of the distal pulmonary artery branches with partially biodegradable alginate microspheres (MSs). MSs (180 ± 28 μm) were intravenously administered eight times at 4-day intervals; control animals received saline. The validity of the model was confirmed using transthoracic echocardiography, exercise testing, catheterization of the right ventricle, and histological examination of the lung and heart. The animals in the CTEPH group demonstrated a stable increase in right ventricular systolic pressure (RVSP) and decreased exercise tolerance. Histopathological examination revealed advanced medial hypertrophy in the small pulmonary arteries associated with fibrosis. The diameter of the main pulmonary artery was significantly larger in the CTEPH group than in the control group. Marinobufagenin and endothelin-1 serum levels were significantly elevated in rats with CTEPH. In conclusion, repetitive administration of alginate MSs in rats resulted in CTEPH development characterized by specific lung vasculature remodeling, reduced exercise tolerance, and a persistent rise in RVSP. The developed model can be used for pre-clinical testing of promising drug candidates.

Indexed as

Disease Models, AnimalMicrospheresAdministration, IntravenousAlginatesAnimalsHypertension, PulmonaryLungMaleMyocardiumPulmonary EmbolismRatsRats, WistarAlginateschronic thromboembolic pulmonary hypertensionexperimental modelmicrospherespulmonary embolismratssodium alginate

Identifiers

PMID33498971
PMCPMC7865986
OpenAlexW3122950370

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.