Abstract

This pilot study will assess potential improvements in the techniques presently used to determine transepithelial nasal membrane potential difference (PD). This membrane voltage, and the response of this voltage to a series of solution, differentiates between individuals who have cyctic fibrosis (CF) and those who do not. It is hypothesized that the proposed improvements will increase the signal to noise ratio (warm versus room temperature solutions) and eliminate the need for a sub-dermal reference needle (dermal abrasion). The reproducibility of measurements as catheter size is varied will also be evaluated. Nasal PD measurements will be performed on a series of CF and non-CF individuals to evaluate the effects of these modifications. It is anticipated that information from this study will contribute to the development of a standardized protocol which can be tested in a future multi-center study to validate the reproducibility of PD measurements. Such standardization is a necessary step in the validation of nasal PD as a surrogate outcome measure for multi-center clinical trails.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
General Clinical Research Centers Program (M01)
Project #
5M01RR000037-40
Application #
6368028
Study Section
Project Start
1999-12-01
Project End
2000-11-30
Budget Start
Budget End
Support Year
40
Fiscal Year
2000
Total Cost
Indirect Cost

  Institution

Name
University of Washington
Department
Type
DUNS #
135646524
City
Seattle
State
WA
Country
United States
Zip Code
98195

  Publications

Courcoulas, Anita P; King, Wendy C; Belle, Steven H et al. (2018) Seven-Year Weight Trajectories and Health Outcomes in the Longitudinal Assessment of Bariatric Surgery (LABS) Study. JAMA Surg 153:427-434
Field, Alison E; Inge, Thomas H; Belle, Steven H et al. (2018) Association of Obesity Subtypes in the Longitudinal Assessment of Bariatric Surgery Study and 3-Year Postoperative Weight Change. Obesity (Silver Spring) 26:1931-1937
O'Rourke, Robert W; Johnson, Geoffrey S; Purnell, Jonathan Q et al. (2018) Serum biomarkers of inflammation and adiposity in the LABS cohort: associations with metabolic disease and surgical outcomes. Int J Obes (Lond) :
Cherrier, M M; Cross, D J; Higano, C S et al. (2018) Changes in cerebral metabolic activity in men undergoing androgen deprivation therapy for non-metastatic prostate cancer. Prostate Cancer Prostatic Dis 21:394-402
Duggan, Catherine; Baumgartner, Richard N; Baumgartner, Kathy B et al. (2018) Genetic variation in TNF?, PPAR?, and IRS-1 genes, and their association with breast-cancer survival in the HEAL cohort. Breast Cancer Res Treat 168:567-576
Han, Seung Jin; Boyko, Edward J; Kim, Soo Kyung et al. (2018) Association of Thigh Muscle Mass with Insulin Resistance and Incident Type 2 Diabetes Mellitus in Japanese Americans. Diabetes Metab J 42:488-495
Wander, Pandora L; Hayashi, Tomoshige; Sato, Kyoko Kogawa et al. (2018) Design and validation of a novel estimator of visceral adipose tissue area and comparison to existing adiposity surrogates. J Diabetes Complications 32:1062-1067
Purnell, Jonathan Q; Johnson, Geoffrey S; Wahed, Abdus S et al. (2018) Prospective evaluation of insulin and incretin dynamics in obese adults with and without diabetes for 2 years after Roux-en-Y gastric bypass. Diabetologia 61:1142-1154
King, Wendy C; Hinerman, Amanda S; Belle, Steven H et al. (2018) Comparison of the Performance of Common Measures of Weight Regain After Bariatric Surgery for Association With Clinical Outcomes. JAMA 320:1560-1569
Han, Seung Jin; Fujimoto, Wilfred Y; Kahn, Steven E et al. (2018) Change in visceral adiposity is an independent predictor of future arterial pulse pressure. J Hypertens 36:299-305

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