Evidence map›Paper›PMID 27294392›Full record

ArticleHuman vaccines & immunotherapeutics2016

Mycobacterial L-forms are found in cord blood: A potential vertical transmission of BCG from vaccinated mothers.

Nadya Markova, Georgi Slavchev, Ljubomir Djerov, Asen Nikolov, Tanya Dimova

Abstract read
In one paragraph

Article in Human vaccines & immunotherapeutics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

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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

5 citing papers in PubMed.

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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.

Nadya Markovaa Institute of Microbiology, Bulgarian Academy of Sciences , Sofia , Bulgaria.
Georgi Slavcheva Institute of Microbiology, Bulgarian Academy of Sciences , Sofia , Bulgaria.
Ljubomir Djerovb Medical University , Sofia , Bulgaria.
Asen Nikolovb Medical University , Sofia , Bulgaria.
Tanya Dimovac Institute of Biology and Immunology of Reproduction , Sofia , Bulgaria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Our previous studies showed that mycobacterial L-forms persist in the blood of BCG vaccinated people and that BCG vaccine is able to produce, under appropriate conditions, filterable, self-replicating L-bodies with virus-like size. Because filterability is one of the characteristics of L-forms, considerable interest has been shown in their capacity to cross the maternal-fetal barrier. The current study demonstrated isolation of mycobacterial L-form cultures from umbilical cord blood of 5 healthy newborns of healthy mothers vaccinated previously with BCG. The isolated cultures showed distinctive growth characteristics of cell wall deficient L-form bacteria. Transmission electron microscopy demonstrated presence of L-bodies with extremely small size of 100 nm and revealed morphological transformations, typical for L-forms. IS6110 Real Time PCR assay confirmed that all L-form isolates were of mycobacterial origin and belonged to Mycobacterium tuberculosis complex which includes vaccinal BCG substrains. In conclusion, we could suggest that reproductive filterable L-bodies of BCG origin are able to fall in blood circulation of the fetus by vertical transmitted pathway and colonize newborns.

Indexed as

BCG VaccineFemaleFetal BloodHealthy VolunteersHumansInfant, NewbornL FormsMicroscopy, Electron, TransmissionMycobacterium bovisReal-Time Polymerase Chain ReactionBCG VaccineBCGcord bloodL-formsmycobacterianewborns

Identifiers

PMID27294392
PMCPMC5085002

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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.