Abstract

Data from several sources supports a link between changing environmental exposures and decreased male reproductive function, including a reported world-wide decline in semen quality over the past fifty years. To clearly identify real geographic and temporal differences in semen quality, studies with carefully controlled semen collection and analysis protocols, population selection, and control of confounding must first carried out. This study is a multi-center study of semen and serum biomarkers of male reproductive function in partners of pregnant women recruited from four urban US centers. The primary aim of this study is to estimate geographic variability of semen parameters. Secondary aims are to study the geographic variability of serum reproductive hormones, testicular and other physical abnormalities, and the relationships between those outcomes and semen quality. We propose to utilize the GCRC for outpatient visits during which male subjects would undergo a physical exam, provide blood and semen samples (visit 1) and a second semen sample (visit 2) and both partners would complete a study questionnaire (visit 1).

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
General Clinical Research Centers Program (M01)
Project #
5M01RR000400-34
Application #
6567461
Study Section
National Center for Research Resources Initial Review Group (RIRG)
Project Start
2001-12-01
Project End
2002-11-30
Budget Start
Budget End
Support Year
34
Fiscal Year
2002
Total Cost
Indirect Cost

  Institution

Name
University of Minnesota Twin Cities
Department
Type
DUNS #
168559177
City
Minneapolis
State
MN
Country
United States
Zip Code
55455

  Publications

Harbin, Michelle M; Zavala, Hanan; Ryder, Justin R et al. (2018) Associations of sex, age and adiposity in endothelium-independent dilation in children. Physiol Meas 39:045002
Arikawa, Andrea Y; Kaufman, Beth C; Raatz, Susan K et al. (2018) Effects of a parallel-arm randomized controlled weight loss pilot study on biological and psychosocial parameters of overweight and obese breast cancer survivors. Pilot Feasibility Stud 4:17
Foster, Eric D; Bridges, Nancy D; Feurer, Irene D et al. (2018) Improved Health-Related Quality of Life in a Phase 3 Islet Transplantation Trial in Type 1 Diabetes Complicated by Severe Hypoglycemia. Diabetes Care 41:1001-1008
Ketterl, Tyler G; Chow, Eric J; Leisenring, Wendy M et al. (2018) Adipokines, Inflammation, and Adiposity in Hematopoietic Cell Transplantation Survivors. Biol Blood Marrow Transplant 24:622-626
Writing Committee for the Type 1 Diabetes TrialNet Oral Insulin Study Group; Krischer, Jeffrey P; Schatz, Desmond A et al. (2017) Effect of Oral Insulin on Prevention of Diabetes in Relatives of Patients With Type 1 Diabetes: A Randomized Clinical Trial. JAMA 318:1891-1902
Kotlyar, Michael; Thuras, Paul; Hatsukami, Dorothy K et al. (2017) Sex differences in physiological response to the combination of stress and smoking. Int J Psychophysiol 118:27-31
Cole, Abigail J; Kuchnia, Adam J; Beckman, Lauren M et al. (2017) Long-Term Body Composition Changes in Women Following Roux-en-Y Gastric Bypass Surgery. JPEN J Parenter Enteral Nutr 41:583-591
Di Bisceglie, A M; Lombardero, M; Teckman, J et al. (2017) Determination of hepatitis B phenotype using biochemical and serological markers. J Viral Hepat 24:320-329
Beckman, Lauren M; Boullata, Joseph I; Fisher, Paige L et al. (2017) Evaluation of Lean Body Weight Equation by Dual-Energy X-Ray Absorptiometry Measures. JPEN J Parenter Enteral Nutr 41:392-397
Marwaha, A K; Panagiotopoulos, C; Biggs, C M et al. (2017) Pre-diagnostic genotyping identifies T1D subjects with impaired Treg IL-2 signaling and an elevated proportion of FOXP3+IL-17+ cells. Genes Immun 18:15-21

Showing the most recent 10 out of 724 publications