Noninvasive Nocturnal Hypoglycemic Alarm

Award Information
Agency:
Department of Health and Human Services
Branch
n/a
Amount:
$520,297.00
Award Year:
2007
Program:
STTR
Phase:
Phase I
Contract:
1R41DK077252-01
Agency Tracking Number:
DK077252
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
ASL ANALYTICAL, INC.
ASL ANALYTICAL, INC., PO Box 136, Oakland, IA, 52319
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
621549414
Principal Investigator:
MARK ARNOLD
(319) 335-1368
MARK-ARNOLD@UIOWA.EDU
Business Contact:
() -
marnold@asl-analytical.com
Research Institution:
UNIVERSITY OF IOWA

UNIVERSITY OF IOWA
IOWA CITY, IA, 52242 4899

Nonprofit college or university
Abstract
DESCRIPTION (provided by applicant): A collaborative effort between ASL Analytical, Inc. and a research team at the University of Iowa is proposed to development a noninvasive nocturnal hypoglycemic alarm. The goal for the alarm system is to provide con tinuous noninvasive measurements during the sleep period of an individual with diabetes, sounding an audible alarm to wake the person if an impending hypoglycemic event is detected. The system will be based on continuous spectral measurements in the combin ation near infrared region. Through the use of a customized Fourier transform spectrometer and novel fiber-optic interface, transmission measurements will be made through the thin skin on the back of the hand of the sleeping person. The patient will initia te the monitoring session by performing a conventional finger-stick glucose measurement and acquiring a corresponding reference spectrum. Subsequent spectra will be referenced to this initial spectrum, and a novel pattern classification algorithm will be u sed to detect hypoglycemic events. Both in vitro and in vivo experiments are proposed in this Phase I application to optimize the hardware and software components of the alarm system. Glucose clamp experiments performed with Sprague-Dawley rats will be use d to establish the performance characteristics of the spectrometer hardware, fiber-optic interface, and alarm algorithm. In addition, optimization of the fiber-optic interface will be aided by experiments performed with a population of human subjects. Thro ugh these studies, the feasibility of the proposed nocturnal alarm will be evaluated in preparation for a potential Phase II development effort. Hypoglycemia is a potentially life-threatening condition where blood glucose concentrations drop below norma l values. Episodes of severe hypoglycemia contribute significantly to the morbidity and mortality of individuals with type I diabetes and recurrent hypoglycemia can result in long-lasting damage to brain function including memory loss and degradation of ot her cognitive functions. Nocturnal hypoglycemia is particularly troublesome for many individuals with type I diabetes because it can go undetected and it is one component in the progression of hypoglycemic unawareness. The proposed nocturnal alarm represen ts an innovative approach to reduce significantly the frequency of hypoglycemic occurrences. Our approach is noninvasive, thereby avoiding confounding issues associated with biocompatibility and infection that plague implantable biosensor technologies.

* information listed above is at the time of submission.

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