Evidence map›Paper›PMID 30706585›Full record

ArticleTropical medicine & international health : TM & IH2019

Preventive chemotherapy reverses covert, lymphatic-associated tissue change in young people with lymphatic filariasis in Myanmar.

Janet Douglass, Lukah Dykes, Louise Kelly-Hope, Susan Gordon, Peter Leggat, Ni Ni Aye, San San Win, Tint Wai, Yi Yi Win, Thet Wai Nwe and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Tropical medicine & international health : TM & IH, 2019. 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
0.6field-weighted citation impact, top 30% 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

5 citing papers in PubMed, 10 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

11 authors at 4 institutions in 3 countries.

Janet DouglassCentre for Neglected Tropical Diseases, Department of Tropical Diseases Biology, Liverpool School of Tropical Medicine, Liverpool, UK.
Lukah DykesCollege of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia.
Louise Kelly-HopeCentre for Neglected Tropical Diseases, Department of Tropical Diseases Biology, Liverpool School of Tropical Medicine, Liverpool, UK.
Susan GordonJames Cook University WHO Collaborating Centre for Vector Borne and Neglected Tropical Diseases, Townsville, QLD, Australia.
Peter LeggatCollege of Public Health Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, QLD, Australia.
Ni Ni AyeDisease Control Unit, Department of Health, Ministry of Health and Sports, Nay Pyi Taw, Myanmar.
San San WinMalaria Unit, World Health Organization Country Office, Yangon, Myanmar.
Tint WaiRegional Vector Borne Diseases Control Unit, Department of Public Health, Ministry of Health and Sports, Mandalay, Myanmar.
Yi Yi WinHealth Literacy Promotion Unit, Department of Public Health, Ministry of Health and Sports, Nay Pyi Taw, Myanmar.
Thet Wai NweDisease Control Unit, Department of Health, Ministry of Health and Sports, Nay Pyi Taw, Myanmar.
Patricia GravesCentre for Neglected Tropical Diseases, Department of Tropical Diseases Biology, Liverpool School of Tropical Medicine, Liverpool, UK.
Ministry of Health and Sports · MMJames Cook University · AUFlinders University · AUAustralian Institute of Tropical Health and Medicine · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis longitudinal comparative study investigated the effect of preventive chemotherapy (PC) on covert tissue changes associated with lymphatic filariasis (LF) among young people living in an LF-endemic area in Myanmar.

methodsTissue compressibility and extracellular free fluid in the lower limbs of people aged 10-21 years were measured using indurometry and bioimpedance spectroscopy (BIS). Baseline measures were taken in October 2014, annual mass drug administration (MDA) of PC was delivered in December, and in March 2015 further PC was offered to LF-positive cases who had missed MDA. Follow-up measures were taken in February and June 2015.

resultsA total of 50 antigen-positive cases and 46 antigen-negative controls were included. Self-reported PC consumption was 60.1% during 2014 MDA and 66.2% overall. At second follow-up, 24 of 34 cases and 27 of 43 controls had consumed PC. Significant and clinically relevant between-group differences at baseline were not found post-PC. Bayesian linear mixed models showed a significant change in indurometer scores at both calves for antigen-positive cases who consumed any PC (dominant calf: -0.30 [95% CI -0.52, -0.07], P < 0.05 and non-dominant calf: -0.35 [95% CI -0.58, -0.12], P < 0.01). Changes in antigen-negative participants or those not consuming PC were not significant.

conclusionThis study is the first attempt to use simple field-friendly tools to track fluid and tissue changes after treatment of asymptomatic people infected with LF. Results suggested that PC alone is sufficient to reverse covert lymphatic disturbance. Longer follow-up of larger cohorts is required to confirm these improvements and whether they persist over time. These findings should prompt increased efforts to overcome low PC coverage, which misses many infected young people, particularly males, who are unaware of their infection status, unmotivated to take PC and at risk of developing lymphoedema. Indurometry and BIS should be considered in assessment of lymphatic filariasis-related lymphedema.

Indexed as

AdolescentAdultAntigensBayes TheoremCase-Control StudiesChemopreventionChildElectric ImpedanceElephantiasis, FilarialExtracellular FluidFemaleFilaricidesHumansLegLongitudinal StudiesLymphedemaAntigensFilaricidesadministration en masse de médicamentsbioimpedance spectroscopychimiothérapie préventiveextrémités inférieursfilariose lymphatiqueglobal programme to eliminate lymphatic filariasisindurométrieindurometrylower extremitylymphatic filariasislymphedemalymphoedèmemass drug administrationpreventive chemotherapyprogramme mondial d’élimination de la filariose lymphatiquespectroscopie de bio-impédance

Identifiers

PMID30706585
PMCPMC6850631
OpenAlexW2913814842

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.