| Create Account | login

login

Publication

Considerations in the design of hyperinsulinemic-euglycemic clamps in the
conscious mouse.

Authors	Ayala JE, Bracy DP, McGuinness OP, Wasserman DH
Submitted By	David Wasserman on 11/5/2007
Status	Published
Journal	Diabetes
Year	2006
Date Published	2/1/2006
Volume : Pages	55 : 390 - 397
PubMed Reference	16443772
Abstract	Despite increased use of the hyperinsulinemic-euglycemic clamp to study insulin action in mice, the effects of experimental parameters on the results obtained have not been addressed. In our studies, we determined the influences of sampling sites, fasting duration, and insulin delivery on results obtained from clamps in conscious mice. Carotid artery and jugular vein catheters were implanted in C57BL/6J mice (n = 6-10/group) fed a normal diet for sampling and infusions. After a 5-day recovery period, mice underwent a 120-min clamp (2.5-mU . kg(-1) . min(-1) insulin infusion; approximately 120-130 mg/dl glucose) while receiving [3-(3)H]glucose to determine glucose appearance (endoR(a)) and disappearance (R(d)). Sampling large volumes (approximately 100 mul) from the cut tail resulted in elevated catecholamines and basal glucose compared with artery sampling. Catecholamines were not elevated when taking small samples ( approximately 5 mul) from the cut tail. Overnight (18-h) fasting resulted in greater loss of total body, lean, and fat masses and hepatic glycogen but resulted in enhanced insulin sensitivity compared with 5-h fasting. Compared with a 16-mU/kg insulin prime, a 300-mU/kg prime resulted in hepatic insulin resistance and slower acquisition of steady-state glucose infusion rates (GIR) after a 5-h fast. The steady-state GIR was expedited after the 300-mU/kg prime in 18-h-fasted mice. The GIR and R(d) rose with increasing insulin infusions (0.8, 2.5, 4, and 20 mU . kg(-1) . min(-1)), but endoR(a) was fully suppressed with doses higher than 0.8 mU . kg(-1) . min(-1). Thus, common variations in experimental factors yield different results and should be considered in designing and interpreting clamps.

Catalog Groups / Subjects

Name	Options
Carbohydrate Metabolism

Back to Top

Store Credentials?

MMPC-Live web resource – Terms of Use

Warranty disclaimer and copyright notice

THE MMPC-Live MAKES NO REPRESENTATION ABOUT THE SUITABILITY OR ACCURACY OF THE SOFTWARE OR DATA FOR ANY PURPOSE, AND MAKES NO WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE OR DATA WILL NOT INFRINGE ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS, OR OTHER RIGHTS. THE SOFTWARE AND DATA ARE PROVIDED "AS IS".

The Mouse Metabolic Phenotyping Centers (MMPC-Live) is an NIDDK funded consortium and adheres to the NIH Data Sharing Policy.

MMPC-Live clients make their data freely available whereby MMPC-Live users may freely build upon, enhance and reuse those data for any purpose without restriction. Scholarly citation norms must be followed for content reuse. Please acknowledge the MMPC-Live using the following text: 'The MMPC-Live data used in this manuscript was supported by the NIDDK National Mouse Metabolic Phenotyping Centers (MMPC-Live, RRID:SCR_008997, www.mmpc.org)'. To cite specific MMPC-Live centers, please use the appropriate RRID available from the MMPC-Live website (https://www.mmpc.org/shared/centers.aspx).

Please note that the acknowledgment text includes a Research Resource Identifier (RRID) for the MMPC-Live CU and Centers. Reproducibility is one of the corner stones of effective, open and transparent biomedical published research. However, too often, resources (e.g. model organisms, antibodies, and tools) are not reported with adequate detail to ensure others can replicate or expand upon the published results. The Research Resource Identification Initiative (#RII) seeks to change these limitations in reporting by the use of unique Research Resource Identifiers (RRIDs). This initiative is designed to encourage authors to provide identification of the types of resources used in their research by adding a globally unique accession number to the resources described in the their manuscripts. These identifiers, called RRIDs, will allow authors to cite the resources that they use in their manuscripts. RRIDs allow for easy tracking of all papers that have used the same resource making it easy to access how the same resources works in other scenarios.

It is expected that MMPC-Live users follow scholarly citation norms, giving credit to fellow scholars when accessing/using protocols and data, including data derived by MMPC-Live (such as summary data) and any plots, tables or screenshots depicting those data.

It is possible for invalid or incomplete results to be presented on the MMPC-Live web site due to software bugs, data problems, or artifacts of human error. Data sets are not necessarily static; we reserve the right to post corrections and updates as needed.

Prohibited use. Data contributors and data users may not use MMPC-Live in any unlawful manner, or in any manner that could impair MMPC-Live services, security or functionality. Automated usage (webcrawlers and similar) must observe each page's "meta robots" html tags and space requests by ≥ 2 seconds. We reserve the right to block any IP associated with what we consider to be excessive or abusive usage patterns, and/or to take any action we deem necessary.

MMPC-Live is a National Institutes of Health-sponsored resource that provides experimental testing services to scientists studying diabetes, obesity, diabetic complications, and other metabolic diseases in mice.

Menu

Home

Contact

About MMPC

Animal Husbandry

Tests Data

Search Data

Analysis

Clients

MMPC Centers

Newsletter

Interested in receiving MMPC News?

Mouse Phenotyping
@NationalMMPC

2017 National MMPC. All Rights Reserved.