Evidence map›Paper›PMID 33520876›Full record

ArticleJournal of diabetes and metabolic disorders2020

Can combination therapy with insulin and metformin improve metabolic function of the liver, in type I diabetic patients? An animal model study on CYP2D1 activity.

Sara Rezai, Navid Neyshaburinezhad, Mohammadreza Rouini, Hoda Lavasani, Yalda H Ardakani

Open access · greenAbstract readEditorial
In one paragraph

Article in Journal of diabetes and metabolic disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

2 citing papers in PubMed, 5 citations in OpenAlex.

  1. 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

5 authors at 1 institution in 1 country.

Sara RezaiBiopharmaceutics and Pharmacokinetic Division, Department of Pharmaceutics, School of Pharmacy, Tehran University of Medical Sciences, P. O. Box 1417614411, Tehran, Iran.
Navid NeyshaburinezhadBiopharmaceutics and Pharmacokinetic Division, Department of Pharmaceutics, School of Pharmacy, Tehran University of Medical Sciences, P. O. Box 1417614411, Tehran, Iran.
Mohammadreza RouiniBiopharmaceutics and Pharmacokinetic Division, Department of Pharmaceutics, School of Pharmacy, Tehran University of Medical Sciences, P. O. Box 1417614411, Tehran, Iran.
Hoda LavasaniBiopharmaceutics and Pharmacokinetic Division, Department of Pharmaceutics, School of Pharmacy, Tehran University of Medical Sciences, P. O. Box 1417614411, Tehran, Iran.
Yalda H ArdakaniBiopharmaceutics and Pharmacokinetic Division, Department of Pharmaceutics, School of Pharmacy, Tehran University of Medical Sciences, P. O. Box 1417614411, Tehran, Iran.ORCID 0000-0003-3719-6732
Tehran University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionChanges in hepatic clearance and CYP2D1 activity after combination therapy with insulin and metformin in type-1 diabetes and insulin administration in type-2 diabetes was assessed in an animal model.

methodsTen male Wistar rats were divided into two groups. Seven days after induction of diabetes, in treatment groups, type-1 diabetic rats received insulin plus metformin, and type-2 diabetic rats received insulin daily for 14 days. On day 21, rats were subjected to liver perfusion using Krebs-Henseleit buffer containing dextromethorphan as a CYP2D1 probe. Perfusate samples were analyzed by HPLC-FL.

resultsThe average metabolic rate of dextromethorphan and hepatic clearance changed from 0.012 ± 0.004 and 6.3 ± 0.1 ml/min in the control group to 0.006 ± 0.001 and 5.2 ± 0.2 ml/min in the untreated type-1 diabetic group, and 0.008 ± 0.003 and 5 ± 0.6 ml/min in the untreated type-2 diabetic rats [1]. In the present study, metabolic rate and hepatic clearance changed to 0.0112 ± 0.0008 and 6.2 ± 0.1 ml/min in the type-1 diabetic group treated with insulin plus metformin, and 0.0149 ± 0.0012 and 6.03 ± 0.06 ml/min in the insulin-receiving type-2 diabetic rats.

conclusionsAdministration of insulin plus metformin in type-1 diabetes could modulate the function of CYP2D1 to the observed levels in the control group and made it clearer to predict the fate of drugs that are metabolized by this enzyme. Moreover, good glycemic control with insulin administration has a significant effect on the balance between hepatic clearance and CYP2D1 activity in type-2 diabetes.

Indexed as

CYP2D1 PhenoconversionIsolated Perfused Liver (IPL)MetforminType-1 Diabetes

Identifiers

PMID33520876
PMCPMC7843674
OpenAlexW3095873715

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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.