Evidence map›Paper›PMID 32472401›Full record

ArticleActa parasitologica2020

Protozoan Cysts in Faecal Pellets of German Cockroaches (Blattella germanica), with Particular Emphasis on Lophomonas blattarum.

Hugo Cornelis van Woerden, Rafael Martínez-Girón, Cristina Martínez-Torre

Abstract read
In one paragraph

Article in Acta parasitologica, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
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

9 citing papers in PubMed.

  1. First Report of the Pulmonary ParasiteAdvanced biomedical research · 2025
    Article
  2. Article
  3. Characterization ofInfectious disease reports · 2024
    Article
  4. Journal of clinical microbiology · 2024
    Review
  5. Review
  6. Review
  7. First report ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2021
    Article
  8. Article
  9. Response Comment on "Iranian journal of parasitology
    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

3 authors.

Hugo Cornelis van WoerdenCentre for Health Science, University of the Highlands and Islands, Old Perth Road, Inverness, IV2 3JH, UK. hugo.vanwoerden@uhi.ac.uk.ORCID http://orcid.org/0000-0003-3382-1684
Rafael Martínez-GirónProtozoal Respiratory Pathology Research Unit. INCLÍNICA Foundation, Calvo Sotelo 16., 33007, Oviedo, Spain.ORCID http://orcid.org/0000-0002-8972-2434
Cristina Martínez-TorreFaculty of Pharmacy, University of Salamanca, Campus Miguel de Unamuno. Lic. Méndez Nieto, s/n, 37007, Salamanca, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study was to investigate protozoan cysts and oocyts in the faecal pellets of the German cockroach (Blattella germanica), with emphasis on the prevalence of Lophomonas blattarum.

methodsThirty adult Blattella germanica (12 males; 18 females) were trapped near Madrid, Spain. Expelled faecal pellets were collected in the laboratory over 5 days in two plastic containers. Protozoan cysts from one container were weighted and those in the other used for morphologically identification.

resultsProtozoan cysts/oocysts per gram of faecal pellet were: Nyctotherus sp. (0.0019/g), Entamoeba (0.0007/g), Balantidium coli (0.0001/g), Lophomonas blattarum (0.00038/g). Observation of 189 protozoan cysts/oocysts indicated the following prevalence: Nyctotherus sp. 65 (34.4%); Gregarina spp. 34 (18%); Entamoeba sp. 24 (12.7%); Cryptosporidium sp. 17 (9%); Coccidia 16 (8.4%); Lophomonas blattarum 13 (6.8%); Balantidium coli 4 (2.1%); and unclassified 16 (8.4%).

conclusionLophomonas blattarum has previously been demonstrated in the gut of cockroaches, but this is the first assessment of the prevalence in Blattella germanica in faecal pellets. The presence of protozoa in faecal pellets provides some evidence for one step in a hypothesised route of respiratory infection whereby protozoa from household insects enter the respiratory tract.

Indexed as

BlattellidaeCockroachesCryptosporidiosisCryptosporidiumCystsParabasalideaAdultAnimalsFemaleHumansMale

Identifiers

PMID32472401
PMCPMC7679306

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.