Testing a Novel Dairy Protein to Counteract Immunosenescence

Use of UV-treated Milk Powder to Increase Vaccine Efficacy in the Elderly

Aging populations experience a decline in adaptive immune system function also known as immunosenesence. Nutritional approaches to stimulate and strengthen the immune system are needed for this growing segment of the population. A controlled, randomized, double blind pilot study was conducted using two different protein sources as nutritional supplementation to enhance vaccine response. Our objective was to examine the immune stimulating effects of dairy protein subjected to ultraviolet radiation (UV-C) radiation treatment process instead of pasteurization. Participants were 21 healthy individuals over 60 years of age who consumed 6 g of the dairy protein or a comparison, soy isoflavone protein, twice a day for eight weeks. DTaP vaccine administered at week 4. Non-parametric t-tests revealed a significant increase in Tetanus antibodies in the dairy group compared to the soy group at week 8. These findings suggest additional benefits of UV-C treated unheated dairy protein as a solution to counteract immunosenescence, but warrant further study in elderly and other populations that might benefit from immune system stimulation.

Study Overview

• Status: Completed
• Conditions: Immunodeficiency
• Intervention / Treatment: Dietary supplement: Dairy protein

• Study Type: Interventional
• Enrollment (Actual): 21
• Phase: Not Applicable

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 60 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion criteria included participants be more than 60 years of age. Volunteers underwent a physical examination and health assessment by a physician to ensure the absence of exclusion criteria which were regular consumption of greater than one unit of milk and/or milk products (milk, yogurt, fresh cheese, etc.) a day at the time of enrollment, known milk allergy, food faddism, other non-traditional diet, prolonged consumption of dairy supplements (greater than one daily during the previous four weeks), use of tobacco products in the previous 10 years, underlying neoplasia or immunological disease, including hypergammaglobunemia, renal disease or failure, use of steroids or immunosuppressive drugs in the previous eight weeks, reduced physical activity (New York Heart Association classes III-IV). Having received a DTaP vaccine within the last five years was an exclusion criteria for the study, but patient records were incomplete for many volunteers on this aspect. Therefore, volunteers with an initial Tetanus antibody level above 3 IU/mL were excluded from the study results as the volunteer was assumed to have had the DTaP vaccine within the last 5 years.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Triple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Soy protein; Low isoflavone soy protein powder: Each participant was required to consume a total of 112 servings for the 8-week duration of the study. A 4-week supply was provided at baseline (week 0) and at the time of vaccine administration (week 4).	Dietary supplement: Dairy protein; A controlled, randomized, double blind pilot study was conducted using two different protein sources as nutritional supplementation to enhance vaccine response.
Experimental: Dairy protein; UV-C treated raw milk protein supplement (TruActiv MPC 85). Each participant was required to consume a total of 112 servings for the 8-week duration of the study. A 4-week supply was provided at baseline (week 0) and at the time of vaccine administration (week 4).	Dietary supplement: Dairy protein; A controlled, randomized, double blind pilot study was conducted using two different protein sources as nutritional supplementation to enhance vaccine response.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Immune response to vaccine	Difference in DTaP vaccine antibodies at before and after vaccine	8 weeks

Collaborators and Investigators

• Sponsor: University of California, Davis

Study record dates

Study Major Dates

• Study Start (Actual): August 1, 2016
• Primary Completion (Actual): August 1, 2017
• Study Completion (Actual): August 30, 2017

Study Registration Dates

• First Submitted: June 5, 2018
• First Submitted That Met QC Criteria: June 5, 2018
• First Posted (Actual): June 15, 2018

Study Record Updates

• Last Update Posted (Actual): April 11, 2023
• Last Update Submitted That Met QC Criteria: April 9, 2023
• Last Verified: April 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Immune System Diseases; Immunologic Deficiency Syndromes
• Other Study ID Numbers: 1164896

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No