05 August 2013 : Original article
The effect of acute administration of Vitamin D on micro vascular endothelial function in Caucasians and South Asian Indians
Jerrold PetrofskyABCDEF, Faris AlshammariABCDEF, Iman Akef KhowailedABCDEF, Sophia RodriguesBCD, Pooja PotnisBCD, Siddhesh AkerkarBCD, Jinal ShahBCD, Guyeon ChungBCD, Rakhi SaveBCDDOI: 10.12659/MSM.889278
Med Sci Monit 2013; 19:641-647
Abstract
BACKGROUND: Vitamin D is a modulator of the immune system. There is some limited evidence that it also increases local blood flow in response to stress.
MATERIAL AND METHODS: In the present study, we examined 20 age matched subjects; 10 whom were from India and 10 Caucasians from the United States. Subjects were administered 4000 IU of Vitamin D3 for 3 weeks at breakfast. The function of the endothelial cells was evaluated in 2 ways; first, the response to 4 minutes of vascular occlusion was measured with a laser Doppler flow meter and second, the blood flow response to local heat at 42°C for 6 minutes.
RESULTS: The results of the experiments showed that, as reported previously, the endothelial function in people from India was less than their Caucasian counterparts. The blood flow response to heat was reduced after 3 weeks administration of vitamin D in both groups and the response to vascular occlusion in the Caucasian group. But there was only a 20% reduction in the blood flow response to heat in the Caucasian group and a 50% reduction in the group from India.
CONCLUSIONS: Thus acute doses of vitamin D may increase vascular tone and reduce blood flow to tissue during stressors. Dosages administered for a longer duration may have beneficial effects on endothelial function but this was not examined here.
Keywords: Regional Blood Flow - drug effects, Microvessels - physiology, India, European Continental Ancestry Group, Endothelium, Vascular - physiology, Rest, Skin - drug effects, Skin Temperature - drug effects, Vitamin D - pharmacology
Editorial
01 February 2023 : Editorial
Editorial: The XBB.1.5 (‘Kraken’) Subvariant of Omicron SARS-CoV-2 and its Rapid Global SpreadDOI: 10.12659/MSM.939580
Med Sci Monit 2023; 29:e939580
SARS-CoV-2/COVID-19
19 January 2023 : Clinical Research
Evaluation of Health-Related Quality of Life and Mental Health in 729 Medical Students in Indonesia During ...Med Sci Monit In Press; DOI: 10.12659/MSM.938892
19 January 2023 : Clinical Research
Determining the Impact of the COVID-19 Pandemic on Dental Care in the Serbian Adult Population: An Online Q...Med Sci Monit 2023; 29:e939238
27 December 2022 : Clinical Research
Effect of Physiotherapy to Correct Rounded Shoulder Posture in 30 Patients During the COVID-19 Pandemic in ...Med Sci Monit 2022; 28:e938926
10 December 2022 : Clinical Research
Retrospective Study to Identify Risk Factors for Severe Disease and Mortality Using the Modified Early Warn...Med Sci Monit 2022; 28:e938647
In Press
03 Feb 2023 : Clinical Research
Treatment of Gingival Recession Defects with Pouch and Tunnel Technique Using Connective Tissue Graft and L...Med Sci Monit In Press; DOI: 10.12659/MSM.938865
02 Feb 2023 : Clinical Research
Online Questionnaire-Based Study to Evaluate the Attitudes and Use of Rubber Dental Dams by Saudi Dental Pr...Med Sci Monit In Press; DOI: 10.12659/MSM.938672
02 Feb 2023 : Database Analysis
Prognostic-Related Biomarkers in Pancreatic Ductal Adenocarcinoma Correlating with Immune Infiltrates Based...Med Sci Monit In Press; DOI: 10.12659/MSM.938785
01 Feb 2023 : Clinical Research
Comparison of 3 Enzyme-Linked Immunoassay Methods to Evaluate Serum Concentrations of Infliximab and Antibo...Med Sci Monit In Press; DOI: 10.12659/MSM.939084
Most Viewed Current Articles
13 Nov 2021 : Clinical Research
Acceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...DOI :10.12659/MSM.932788
Med Sci Monit 2021; 27:e932788
30 Dec 2021 : Clinical Research
Retrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...DOI :10.12659/MSM.935379
Med Sci Monit 2021; 27:e935379
08 Mar 2022 : Review article
A Review of the Potential Roles of Antioxidant and Anti-Inflammatory Pharmacological Approaches for the Man...DOI :10.12659/MSM.936292
Med Sci Monit 2022; 28:e936292
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952