Clinical trial NCT04122794: The Role of Unsteady Wall Shears Stress Stimuli on Human Umbilical Vein Endothelial Cells Harvested From Umbilical Cords
Official title: The Role of Unsteady Wall Shears Stress Stimuli on Human Umbilical Vein Endothelial Cells (HUVECs) Harvested From Umbilical Cords
Study type: OBSERVATIONAL
Overall status: TERMINATED
Conditions: Vascular Diseases
Keywords: Endothelial Cells
Lead sponsor: University Hospital of Limerick
Sponsor class: OTHER
Collaborators: name: University of Limerick
First posted: 2019-10-10
Enrollment: 13
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 40
Standard ages: ADULT
Observational model: COHORT
Time perspective: CROSS_SECTIONAL
Sampling method: PROBABILITY_SAMPLE
Study population: Women attending Maternity Services in Limerick who are pregnant and due for routine delivery that meet all the inclusion and exclusion criteria.

Brief summary: The aim of this study is to obtain and test endothelial cells (EC's) from umbilical cords to examine specific properties of these cells which make up the inner lining of blood vessels.

Detailed description: Mechanical testing will be performed on the Ec's to see how the cells reacts and ultimately how the blood vessel is affected.

A central role in the mechanism that defines the nature of vessel remodelling is played by endothelial cells. EC's are extremely sensitive to the frictional forces exerted on a unit of the endothelial area by blood flow. This mechanical stimulus is known as wall shear stress (WSS). WSS experienced by EC's in-vivo is unsteady due to the unsteady nature of blood flow produced during the cardiac cycle and due to the complex nature of the vascular tree.

The extent to which this applies to venous cells and tissue remains unknown and it is the focus of this study.

Eligibility criteria: Inclusion Criteria:

* Patients who are attending the Maternity Services who are pregnant and due for routine delivery.
* Aged 18- 40 years.
* Are willing and capable to voluntarily sign a statement of informed consent to take part in this investigation.
* Patients due to give birth to twins will be included in this study. Women having both "normal" delivery and caesarean section delivery will be included in this study.

Exclusion Criteria:

* Patients unable to provide informed consent.
* Patients who are under the age of 18 and over the age of 40 years.
* Patients who are deemed unsuitable due to any circumstances as deemed appropriate by the Consultant.
* Patients with a Blood Borne Virus (HIV Type 1, HIV Type 2, Hepatitis B, Hepatitis C) will be excluded from the study.
* Patients with diabetes that is not gestational in nature will be excluded from this study.
* Patients due to deliver triplets or more will be excluded from this study.
* Patients who deliver their baby before 37 weeks gestation will not have umbilical cord tissue retained for study purposes.

Primary outcomes:
measure: The identification of Endothelial Cell phenotype
timeFrame: 2 years
Secondary outcomes:
Other outcomes:
Locations:
city: Limerick
country: Ireland
facility: University Hospital Limerick
Study officials:
affiliation: University Hospital of Limerick
name: Eamon Kavanagh, MD FRCSI
role: PRINCIPAL_INVESTIGATOR
References: