Evidence map›Paper›PMID 22736065›Full record

ArticleJournal of natural medicines2013

Black pepper and piperine reduce cholesterol uptake and enhance translocation of cholesterol transporter proteins.

Acharaporn Duangjai, Kornkanok Ingkaninan, Sakonwun Praputbut, Nanteetip Limpeanchob

Abstract read
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In one paragraph

Article in Journal of natural medicines, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
3.9field-weighted citation impact, top 8% 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

10 citing papers in PubMed, 49 citations in OpenAlex.

  1. Review
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  5. Semi-Synthesis ofMolecules (Basel, Switzerland) · 2022
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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.

Acharaporn DuangjaiDepartment of Pharmacy Practice, Center of Excellence for Innovation in Chemistry, Pharmacological Research Unit, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, 65000, Thailand.
Kornkanok Ingkaninan
Sakonwun Praputbut
Nanteetip Limpeanchob
Naresuan University · TH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Black pepper (Piper nigrum L.) lowers blood lipids in vivo and inhibits cholesterol uptake in vitro, and piperine may mediate these effects. To test this, the present study aimed to compare actions of black pepper extract and piperine on (1) cholesterol uptake and efflux in Caco-2 cells, (2) the membrane/cytosol distribution of cholesterol transport proteins in these cells, and (3) the physicochemical properties of cholesterol micelles. Piperine or black pepper extract (containing the same amount of piperine) dose-dependently reduced cholesterol uptake into Caco-2 cells in a similar manner. Both preparations reduced the membrane levels of NPC1L1 and SR-BI proteins but not their overall cellular expression. Micellar cholesterol solubility of lipid micelles was unaffected except by 1 mg/mL concentration of black pepper extract. These data suggest that piperine is the active compound in black pepper and reduces cholesterol uptake by internalizing the cholesterol transporter proteins.

Indexed as

AlkaloidsBenzodioxolesBiological TransportCaco-2 CellsCholesterolHumansMembrane ProteinsMembrane Transport ProteinsPiperidinesPiper nigrumPlant ExtractsPolyunsaturated AlkamidesProtein TransportScavenger Receptors, Class BAlkaloidsBenzodioxolesCholesterolMembrane ProteinsMembrane Transport ProteinsNPC1L1 protein, humanPiperidinespiperinePlant ExtractsPolyunsaturated AlkamidesSCARB1 protein, humanScavenger Receptors, Class B

Identifiers

PMID22736065
OpenAlexW2012416440

What OpenQuestion holds

Textmetadata
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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.