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Autonomic Nervous Activity in Women With Gestational Diabetes

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: March 23, 2009
Last Update Posted: March 23, 2009
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
Helsinki University
Through complex hormonal pathways, insulin resistance can lead to the activation of the sympathetic nervous system, and vice versa. Schobel et al. showed that in PE patients, mus-cle sympathetic nerve activity (MSNA) is increased compared with normotensive pregnant and non-pregnant women. Studies assessing heart-rate variability and plasma noradrenalin concentrations also suggest increased sympathetic activity in PE. It has been hypothesized that sympathetic over-activity is a precursor of PE, normally compensated for by vasodilating mechanisms, but resulting in PE when the mechanisms fail. In addition to sympathetic activity, various markers of inflamma-tion are also associated with reduced insulin sensitivity, suggesting that chronic sub-clinical inflamma-tion could be part of the insulin resistance syndrome. The role of sympathetic over-activity and inflammatory markers in gestational diabetes has not been investigated

Gestational Diabetes

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective
Official Title: Autonomic Nervous Activity in Women With Gestational Diabetes

Further study details as provided by Helsinki University:

Primary Outcome Measures:
  • Serum Noradrenalin level

Secondary Outcome Measures:
  • Heart rate variability: LF, VLF, HF

Enrollment: 80
Study Start Date: August 2004
Study Completion Date: March 2009
Primary Completion Date: November 2007 (Final data collection date for primary outcome measure)
Women with gestational diabetes
Pregnant women without gestational daibetes
Women with gestational diabetes and hypertension
Non pregnant women


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Ages Eligible for Study:   18 Years to 45 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Gestational diabetic women having or not hypertension with two control groups, one pregnant on non-pregnant. All the women are studied during night time to study the arousal of the sympathetic activity in the early morning hours

Inclusion Criteria:

  • Clinical diagnosis of gestational diabetes (OGTT) with or without BP > 140/90.
  • Pregnant control with normal OGTT-

Exclusion Criteria:

  • Smoking
  • Uncontrolled hypertension
  • Diabetes
  • Medication affecting sympathetic activity
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00867022

Department of Obstet and Gyn, Helsinki University Hospital
Helsinki, Uusimaa, Finland, 00290
Sponsors and Collaborators
Helsinki University
  More Information

Responsible Party: Risto Kaaja, Helsinki University Hospital
ClinicalTrials.gov Identifier: NCT00867022     History of Changes
Other Study ID Numbers: GESTSYMPIS
First Submitted: March 20, 2009
First Posted: March 23, 2009
Last Update Posted: March 23, 2009
Last Verified: March 2009

Keywords provided by Helsinki University:
Inflammatory factors
Coagulation factors
Sympathetic activity

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes, Gestational
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Pregnancy Complications