NCT07200804

Relationship Between Serum Vitamin D and Atherosclerosis in Hemodialysis Patients

Exploring the Relationship Between Serum Vitamin D and Atherosclerosis in Hemodialysis Patients: A Cross-sectional Study

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 90 (actual)
• Sponsor: Ain Shams University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The study aimed to check if there is a link between good vitamin D levels in the blood and subclinical atherosclerosis in people on hemodialysis.

Detailed description

Hemodialysis patients with End-Stage Renal Disease (ESRD) face a significantly elevated risk of cardiovascular disease (CVD) due to a complex interplay of factors. A 30-year-old HD patient faces a cardiovascular mortality risk equivalent to that of an 80-year-old in the general population, emphasizing the accelerated aging of the cardiovascular system in ESRD. Vitamin D may reduce inflammation and modulate immunity, lowering hypertension and dyslipidemia risks and possibly reversing vascular calcification. However, excessive supplementation can cause hypercalcemia.

Conditions

• Serum
• Vitamin D
• Atherosclerosis
• Hemodialysis

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	Measurement of Serum Vitamin D Level	Vitamin D is made of two types, named ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). Vitamin D2 is produced by converting ergosterol, a fungi and plants sterol, when it is exposed to light from the sun. Vitamin D3 is made differently, as it is formed in animal skin such as human skin with the help of 7-dehydrocholesterol when the skin is exposed to sunlight (UVB radiation).
OTHER	Measurement of Carotid Intima-Media Thickness	Samples were collected by measuring the carotid intima-media thickness (CIMT) with a Mind ray Real time ultrasound scanner DC-6 doppler machine that has a probe at a frequency of 7.5 MHz. The measurement was done from three different sites each 1 cm proximal to the carotid bulb. The average of three values was taken to determine the final value. If CIMT \> 0.8 mm, it was defined as thickened. The measurements adhered to the Mannheim CIMT Consensus (2004-2006)

Timeline

• Start date: 2021-06-01
• Primary completion: 2021-12-01
• Completion: 2021-12-01
• First posted: 2025-10-01
• Last updated: 2025-10-01

Locations

1 site across 1 country: Egypt