Evidence map›Paper›PMID 11697465›Full record

ArticlePharmaceutical research2001

Inhalable microparticles containing drug combinations to target alveolar macrophages for treatment of pulmonary tuberculosis.

R Sharma, D Saxena, A K Dwivedi, A Misra

Abstract read
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In one paragraph

Article in Pharmaceutical research, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
3.7field-weighted citation impact, top 7% 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

39 citing papers in PubMed, 201 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. QbD driven targeted pulmonary delivery of dexamethasone-loaded chitosan microspheres: Biodistribution and pharmacokinetic study.Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society · 2023
    Article
  6. Article
  7. Frontiers in oncology · 2022
    Article
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  9. Review
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  12. Review
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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

4 authors at 1 institution in 1 country.

R SharmaPharmaceutics Division, Central Drug Research Institute, Lucknow, India.
D Saxena
A K Dwivedi
A Misra
Central Drug Research Institute · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDrug therapy of tuberculosis (TB) requires long-term oral administration of multiple drugs for curing as well as preventing and/ or combating multi-drug resistance. Persistent, high blood levels of antitubercular drugs resulting from prolonged oral administration of anti-TB drugs may be neither necessary nor sufficient to kill mycobacteria residing in macrophages (M4). Inhalable biodegradable microparticles containing two of the first-line anti-TB drugs, isoniazid (H), and rifampicin (R), were prepared and tested for (i) phagocytosis by mouse Mphi. (ii) administration as a dry powder inhalation to rats, and (iii) targeting alveolar Mphi with high drug doses when administered to rats.

methodspoly(D-L lactic acid) microparticles were prepared by emulsion methods and their drug content and size distribution determined. These were tested for uptake by murine Mphi in culture and resultant intracellular drug concentrations determined by high performance thin-layer chromatography (HPTLC). Rats were administered an inhalation of microparticles using an inhalation chamber developed in the lab. The extent of microparticle delivery in vivo was examined by flow-cytometry. Drug concentrations in the blood and in alveolar Mphi were estimated by high-performance liquid chromatography after oral, vascular. intratracheal, and inhalation administration.

resultsInhalable microparticles could be prepared and were taken up by cultured Mphi. Large numbers of particles could be delivered to the bronchiopulmonary system through a 2-min exposure to fluidized particles. The intracellular drug concentrations resulting from vascular delivery of soluble drugs were found to be lower than those resulting from particle inhalation.

conclusionsInhalable microparticles containing multiple anti-TB drugs offer promises of dose and dosing-frequency reduction, toxicity alleviation, and targeting Mphi-resident persistent mycobacteria.

Indexed as

Drug Delivery SystemsAdministration, InhalationAnimalsAntitubercular AgentsChromatography, High Pressure LiquidChromatography, Thin LayerFlow CytometryHydrogen-Ion ConcentrationIsoniazidMacrophages, AlveolarMiceMicrospheresParticle SizePhagocytosisRatsRifampinAntitubercular AgentsIsoniazidRifampin

Identifiers

PMID11697465
OpenAlexW301527467

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.