Evidence map›Paper›PMID 10220402›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1999

Continuous in vitro propagation and differentiation of cultures of the intramolluscan stages of the human parasite Schistosoma mansoni.

M G Ivanchenko, J P Lerner, R S McCormick, A Toumadje, B Allen, K Fischer, O Hedstrom, A Helmrich, D W Barnes, C J Bayne

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

31 citing papers in PubMed, 94 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

10 authors at 2 institutions in 1 country.

M G IvanchenkoDepartment of Zoology, Oregon State University, Corvallis, OR 97331, USA.
J P Lerner
R S McCormick
A Toumadje
B Allen
K Fischer
O Hedstrom
A Helmrich
D W Barnes
C J Bayne
American Type Culture Collection · USOregon State University · US

Funding

UNDERLYING MECHANISMS OF SCHISTOSOME/SNAIL COMPATIBILITYR01AI016137 · NIAID · OREGON STATE UNIVERSITY · PI BAYNE, CHRISTOPHER JEFFREY · 1989 to 2012
$3.1M
Underlying mechanisms of schistosome/snail compatibilityR21AI016137 · NIAID · OREGON STATE UNIVERSITY · PI BAYNE, CHRISTOPHER JEFFREY · 2001 to 2001
$273k
CELL CULTURE OF SCHISTOSOMA MANSONIR01RR012063 · NCRR · OREGON STATE UNIVERSITY · PI BARNES, DAVID WILLIAM · 1996 to 1998
–
NCRR NIH HHS RR12063NIAID NIH HHS AI13137NIAID NIH HHS R01 AI016137NIAID NIH HHS R21 AI016137PHS HHS N01-A1-55270
6 · The paper itself

Abstract

The metazoan parasitic blood flukes, Schistosoma spp., infect over 200 million people worldwide and cause extensive human morbidity and mortality. Research strategies for development of anti-schistosomal agents are impeded by the organism's complex molluscan-mammalian life cycle, which limits experimental approaches and availability of material. We derived long-term continuously proliferative cultures of Schistosoma mansoni sporocysts capable of generating cercariae in vitro. Cultured organisms retained the ability to parasitize the host, and they exhibited developmental regulation of candidate stage-specific genes in the host-free culture system. Evidence for expression of a reverse transcriptase also was found in the cultured organisms, pointing to this activity as a possible mechanistic contributor to the dynamic relationship between the parasite and its hosts. Continuous in vitro propagation of the asexual sporocyst stage allows isolation of clonally derived parasite populations and provides a means to study schistosomal molecular genetics, metabolism, and evasion of host defenses.

Indexed as

AnimalsCulture TechniquesGene Expression RegulationHumansMolluscaRNA-Directed DNA PolymeraseSchistosoma mansoniRNA-Directed DNA Polymerase

Identifiers

PMID10220402
PMCPMC21800
OpenAlexW2091187928

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.