Evidence map›Paper›PMID 9486396›Full record

Trial reportClinical and experimental immunology1998

Pentoxifylline decreases in vivo and in vitro tumour necrosis factor-alpha (TNF-alpha) production in lepromatous leprosy patients with erythema nodosum leprosum (ENL).

E P Sampaio, M O Moraes, J A Nery, A R Santos, H C Matos, E N Sarno

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in Clinical and experimental immunology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.6field-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

23 citing papers in PubMed, 77 citations in OpenAlex.

  1. Article
  2. Article
  3. Neutrophils in Leprosy.Frontiers in immunology · 2019
    Review
  4. Innate Immune Responses in Leprosy.Frontiers in immunology · 2018
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Pentoxifylline and its applications in dermatology.Indian dermatology online journal · 2014
    Article
  10. Effect of TNF-α production inhibitors on the production of pro-inflammatory cytokines by peripheral blood mononuclear cells from HTLV-1-infected individuals.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2011
    Article
  11. Review
  12. Pentoxifylline decreases allodynia and hyperalgesia in a rat model of neuropathic pain.Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences · 2011
    Article
  13. Article
  14. Review
  15. Article
  16. The continuing challenges of leprosy.Clinical microbiology reviews · 2006
    Review
  17. Article
  18. Article
  19. Article
  20. 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

6 authors at 2 institutions in 1 country.

E P SampaioLeprosy Laboratory, Oswaldo Cruz Institute, Rio de Janeiro, Brazil.
M O Moraes
J A Nery
A R Santos
H C Matos
E N Sarno
Fundação Oswaldo Cruz · BRUniversidade do Estado do Rio de Janeiro · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Increasing evidence has implicated TNF-alpha as a pivotal molecule involved in the systemic inflammatory manifestations of ENL, an acute inflammatory complication that may occur in the chronic course of leprosy. In the present study, the mechanism of action of pentoxifylline (PTX) as an alternative therapy for management of leprosy reactions has been evaluated. The effect of PTX on TNF-alpha production was examined in leprosy patients at the protein level and at the transcriptional level as well. Treatment of ENL patients with PTX (1200 mg daily) ameliorated the systemic symptoms and favoured the evolution of reactional leprosy lesions. Serum TNF-alpha was assayed before and during treatment with PTX in 15 patients. The increased TNF-alpha levels seen in the circulation during the reaction were dramatically reduced within 3-7 days of therapy. No significant effect on serum IL-6 was noted. In vitro TNF-alpha production was assayed upon culture stimulation with Mycobacterium leprae. A reduction of inducible TNF-alpha in peripheral blood mononuclear cells (PBMC) was seen after 1-2 weeks of in vivo administration of PTX. Furthermore, no effect of the drug on IL-10 secretion was detected in these cultures. A kinetic analysis of the expression of TNF-alpha and IL-6 mRNA at the site of leprosy lesion was performed in six reactional patients by semiquantitative reverse transcriptase-polymerase chain reaction (RT-PCR). The amount of TNF-alpha mRNA was increased in the tissue during ENL compared with before the reaction, and decreased thereafter following treatment for reaction (either PTX or thalidomide). These data suggest that PTX inhibits TNF-alpha production in ENL patients both in vivo and in vitro, and it may be useful in the treatment of leprosy patients undergoing ENL.

Indexed as

AdolescentAdultCells, CulturedErythema NodosumFemaleGene ExpressionHumansLeprosy, LepromatousMaleMiddle AgedPentoxifyllinePhosphodiesterase InhibitorsPolymerase Chain ReactionRNA, MessengerTumor Necrosis Factor-alphaPentoxifyllinePhosphodiesterase InhibitorsRNA, MessengerTumor Necrosis Factor-alpha

Identifiers

PMID9486396
PMCPMC1904921
OpenAlexW1977589318

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.