Integrated Aging Studies Databank and Repository (IASDR)

The Integrated Aging Studies Data Bank and Repository (IASDR) is a web-based data management system that houses data from WF OAIC studies in a common structured format, readily allowing the integration of summary statistics and data across multiple studies. The IASDR also provides information on availability of activity monitoring, imaging data and WF OAIC Biospecimens Repository.

The IASDR has 3 components:

  1. a publicly accessible registry (WF Pepper Study Registry) to query metadata that indicates the availability of components of the common assessment battery, activity monitoring, imaging data (e.g. DEXA, CT and MRI), and biospecimens (e.g. serum, plasma, muscle, adipose, urine and DNA) across studies; WF Pepper Study Registry is embedded in the OAIC CC Pepper Study Registry.
  2. a search engine of descriptive statistics providing more granular details for selected common assessment battery based on filtering criteria (e.g., study, age, gender/sex, etc.), to which WF OAIC investigators can request password to access; and
  3. a quality-controlled, analysis ready participant-level dataset comprising the common assessment battery that is updated quarterly (secured).
    Available data in the common assessment battery include:
    • Demographics, gender, age, race/ethnicity
    • Body Composition (DXA)
    • Physical Performance: Short Physical Performance Battery (SPPB), Expanded SPPB, Grip Strength, Gait Speed (4 meter and 400 meter, GAIT Rite)
    • Disability measures: PAT-D, MAT-sf
    • Cognition: MoCA, DSST, MMSE
    • Depression: CES-D
    • Biomarkers:IL-6, TNF-alpha CRP, sTNF-R1 Adiponectin, Leptin

Biospecimen Repository


An WF OAIC Biological Specimen Repository and Distribution Center developed a centralized system for the proper collection, transfer, and storage of biological tissue to be used for conducting future ancillary studies by investigators in aging related research.

As of January 2023, the Repository holds >200,000 cryovials of serum or plasma from over 4,500 participants, 5,290 DNA samples, and 1,973 participants with either stored adipose tissue or muscle hundreds of pre/post sets of stored muscle from participants in different intervention studies. All samples are collected from study participants enrolled in research protocols at Wake Forest University or Wake Forest University School of Medicine. Written informed consent is obtained from each participant providing permission to have their samples stored for future, undesignated research.

IRB approval is required to receive samples and priority is given to new investigators and those within the OAIC network.

Availability of biospecimens can be accessed through WF PSR.

Study (PI) Gender/Age Disease/Condition N= Study Design Intervention Serum EDTA plasma Urine Muscle Adipose DNA
REACT II
(BERRY)
M/F: 37-95 COPD 200 12-month RCT Aerobic Exercise;    
REACT III
(BERRY)
M/F: 45-80 COPD 32 4-month RCT Resistance Exercise vs. Control    
Vitamin D Supplement
(HOUSTON)
M/F: 70-89 Vitamin D insufficient 26 4-month RCT Vitamin D  + Calcium supplementation vs. calcium only      
FLOW
(HUNDLEY)
M/F: 50+ Aging/Heart Failure 30 Cross-sectional N/A       ?    
Predict
(HUNDLEY)
M/F: 55-85 At risk for CHF 608 Longitudinal cohort N/A        
Non-human Primate Sample
(KAPLAN)
M/F:   96   Diet - Soy and Casein; surgery-induced menopause        
Healthy Aging
(KITZMAN)
M/F: 60+ Healthy 61 Cross-sectional N/A          
PIE
(KITZMAN)
M/F: 60+ Diastolic heart failure 80 12-month RCT ACE inhibitor use vs Placebo    
PIE II
(KITZMAN)
M/F: 60+ Diastolic heart failure 80 12-month RCT Spironolactone vs Placebo    
SECRET
(KITZMAN)
M/F: 60+ Overweight/obese; heart failure 100 5-month RCT Caloric Restriction vs. Aerobic Exercise vs. CR+AEX      
LIFE
- Pilot (KRITCHEVSKY)
M/F: 70-89 At risk for disability 424 12-month RCT Aerobic + Resistive Exercise vs. Control      
OPTIMA
(KRITCHEVSKY)
M/F: 65-79 Overweight/obese; at risk for disability 88 6-month RCT Caloric Restriction + Pioglitazone vs. CR + Resistance Exercise      
RAINS
(KRITCHEVSKY)
M/F: 65-85 Overweight/obese; at risk for disability 67 4-month intervention Nutrition (protein) supplementation        
POWER
(MARSH)
M/F: 65+ At risk for disability 45 3-month RCT Strength training vs. Power training vs. Control      
IDEA
(MESSIER)
M/F: 55+ Overweight/obese; Knee OA 450 18-month RCT Caloric Restriction vs. Aerobic Exercise vs. CR+AEX    
LOSE-IT
(MILLER)
M/F: 18+ Bariatric surgery patients 42 Cross-sectional N/A    
PACT
(MILLER)
M/F: 60+ Overweight/obese; Knee OA 84 6-month RCT Caloric Restriction + Exercise vs. Control    
EFFECT - Pilot
(MORRIS)
M/F: 18+ ICU patients 100 Cross-sectional Intensive physical therapy vs. Usual Care      
TARGETT
(MORRIS)
M/F: 18+ ICU patients 322 RCT Intensive physical therapy vs. Usual Care      
DEMO
(NICKLAS)
F: 50-70 Abdominal obesity 112 5-month RCT Caloric Restriction  vs. CR + Aerobic Exercise    
I'M FIT
(NICKLAS)
M/F: 65-79 Obese; at risk for disability 130 5-month RCT Resistance Exercise vs. Resistance exercise + Caloric Restriction    
INFINITE
(NICKLAS)
M/F: 65-79 Obese 180 5-month RCT Aerobic Exercise vs AEX + Caloric Restriction        
CLIP
(REJESKI)
M/F: 60-79 Overweight/obese; CVD or METs 288 18-month RCT Caloric Restriction and/or Aerobic Exercise        
Study (PI) Gender/Age Disease/Condition N= Study Design Intervention Serum EDTA plasma Urine Muscle Adipose DNA

Potential Uses

Novel Hypotheses Testing The IASDR is a valuable resource for efficient testing of novel hypotheses with adequate sample sizes across a broad range of diseases and conditions related to the OAIC's theme.

Examples of publications using the IASDR:

Sample size determination The IASDR provides a wealth of preliminary data for use in sample size calculations. Intervention effects and estimates of variability/association often can be derived from prior OAIC studies.