Evidence map›Paper›PMID 9931305›Full record

ArticleThe Biochemical journal1999

Inhibition of proprotein convertases-1, -7 and furin by diterpines of Andrographis paniculata and their succinoyl esters.

A Basak, S Cooper, A G Roberge, U K Banik, M Chrétien, N G Seidah

Open access · greenAbstract read
In one paragraph

Article in The Biochemical journal, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.9field-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

32 citing papers in PubMed, 107 citations in OpenAlex.

  1. Article
  2. Biologically Active Compounds of Malaysian Medicinal and Aromatic Plants.Progress in the chemistry of organic natural products · 2025
    Review
  3. Article
  4. A Comprehensive Review ofMolecules (Basel, Switzerland) · 2022
    Review
  5. Article
  6. Article
  7. Phytopharmaceuticals mediated Furin and TMPRSS2 receptor blocking: can it be a potential therapeutic option for Covid-19?Phytomedicine : international journal of phytotherapy and phytopharmacology · 2021
    Review
  8. Life (Basel, Switzerland) · 2021
    Review
  9. Synthetic and medicinal perspective of quinolines as antiviral agents.European journal of medicinal chemistry · 2021
    Review
  10. Article
  11. Article
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  15. Article
  16. 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

6 authors at 4 institutions in 1 country.

A BasakLaboratories of Structure and Metabolism of Neuropeptides, Clinical Research Institute, University of Montreal, Qué, Canada. Basaka@ircm.umontreal.ca
S Cooper
A G Roberge
U K Banik
M Chrétien
N G Seidah
Institut National de la Recherche Scientifique · CAUniversité de Montréal · CAContinental (Canada) · CAMontreal Clinical Research Institute · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Studies were performed to investigate the prohormone/proprotein convertase (PC)-inhibitory properties of chemical constituents of the medicinally active plant Andrographis paniculata (AP; from the family Acanthaceae), also known as 'King of Bitters'. Among the individual components tested against the clinically important convertases, furin and PC1, neoandrographolide (a C3 O-glucoside derivative of the major constituent andrographolide) exhibited the highest inhibitory action with an IC50 of 53.5 microM against furin. The data further revealed that although andrographolide, the major bitter principle of AP, exhibited a relatively small enzyme inhibition (IC50=1.0 mM and Ki=200 microM against furin), upon succinoylation, its inhibitory action against the above convertases was enhanced significantly with a Ki in the low micromolar range (<30 microM), suggesting that a specific structural modification of the andrographolide skeleton may be exploited to develop a new class of non-peptide inhibitors of PCs. When tested against PC7, these succinoylated derivatives of andrographolide also displayed strong inhibitory action, with Ki values again in the low micromolar range. This potentially interesting observation may be attributed to the reported anti-HIV property of 14-dehydroandrographolide succinic acid monoester (DASM). It is suggested here that DASM, by virtue of this protease inhibitory property, possibly acts by suppressing the proteolytic cleavage of envelope glycoprotein gp160 of HIV, which is known to be PC-mediated, particularly by furin and PC7.

Indexed as

Anti-HIV AgentsAspartic Acid EndopeptidasesDiterpenesEnzyme ActivationEstersFurinGlucosidesHumansKineticsPlants, MedicinalProprotein ConvertasesSubtilisinsSuccinatesSuccinic AnhydridesTetrahydronaphthalenesandrographolideAnti-HIV AgentsAspartic Acid Endopeptidasesdehydroandrographolide 5-succinic acid monoesterdehydroandrographolide 6-succinic acid monoesterDiterpenesEstersFurinGlucosidesneoandrographolideproprotein convertase PC7Proprotein ConvertasesSubtilisinsSuccinatessuccinic anhydrideSuccinic AnhydridesTetrahydronaphthalenes

Identifiers

PMID9931305
PMCPMC1220031
OpenAlexW1975794635

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.