Prospective Studies of the Natural History of Diabetes Mellitus and Its Complications in the Gila River Indian Community - Full Text View

Purpose

This project is a continuation of an extensive longitudinal population-based epidemiological investigation of the etiology and determinants of type 2 diabetes (and its complications) and formerly arthritis. The original baseline observations were made on the residents of the Gila Indian Reservation, predominantly Pima Indians, in 1965. We attempt to reexamine the population at two-yearly intervals, and have continued to recruit new respondents who, because of age and residence or familial relationships, become eligible for entry into the project. Eligible persons receive a battery of standardized examinations related to diabetes and its complications at two-yearly intervals, including a glucose tolerance test, biochemical determinations, such as serum cholesterol and creatinine, insulin, etc., a physical examination, and in those aged 15 years and above, retinal photographs, and an electrocardiogram. Persons known to have diabetes will be asked to undergo the examination at annual intervals to enable more complete and accurate documentation of their health status and to identify the development and progression of complications of the disease.

The data collected have been used to describe the natural history and determinants of diabetes and its complications, to investigate factors relating to the etiology of these diseases and investigate the genetics of diabetes, its complications and other phenotypes. In addition, the project serves to identify subjects with specific characteristics for the clinical research projects carried out by the Obesity and Diabetes Clinical Research Section and the Diabetes Epidemiology and Clinical Research Section fo the Branch.

Condition
Diabetes Mellitus


Study Type:	Observational
Official Title:	Prospective Studies of Diabetes Mellitus and Its Complications in the Gila River Indian Community

Further study details as provided by National Institutes of Health Clinical Center (CC):


Estimated Enrollment:	99999999
Study Start Date:	September 1976

Detailed Description:

This project is a continuation of an extensive longitudinal population-based epidemiological investigation of the etiology and determinants of type 2 diabetes (and its complications) and formerly arthritis. The original baseline observations were made on the residents of the Gila Indian Reservation, predominantly Pima Indians, in 1965. We attempt to reexamine the population at two-yearly intervals, and have continued to recruit new respondents who, because of age and residence or familial relationships, become eligible for entry into the project. Eligible persons receive a battery of standardized examinations related to diabetes and its complications at two-yearly intervals, including a glucose tolerance test, biochemical determinations, such as serum cholesterol and creatinine, insulin, etc., a physical examination, and in those aged 15 years and above, retinal photographs, and an electrocardiogram. Persons known to have diabetes will be asked to undergo the examination at annual intervals to enable more complete and accurate documentation of their health status and to identify the development and progression of complications of the disease.

The data collected have been used to describe the natural history and determinants of diabetes and its complications, to investigate factors relating to the etiology of these diseases and investigate the genetics of diabetes, its complications and other phenotypes. In addition, the project serves to identify subjects with specific characteristics for the clinical research projects carried out by the Obesity and Diabetes Clinical Research Section and the Diabetes Epidemiology and Clinical Research Section of the Branch.

Eligibility


Ages Eligible for Study:	5 Years and older (Child, Adult, Senior)
Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

INCLUSION CRITERIA:

The study population is all persons aged 5 years and over residing on the Gila River Indian Reservation in Arizona. The vast majority of the eligible subjects are American Indians and there are similar numbers of males and females in the population. The study population was chosen because our previous work has shown that this population has the highest prevalence of Type 2 diabetes in the world. There are small numbers of other racial groups in the selected population who are also eligible to participate in the study. They are mainly members of the families in the community and therefore by participating they can contribute valuable research information to the study. All persons resident in the community aged 5 years and over are invited to participate in the study at two-yearly intervals. In addition, other tribal members and selected family members such as first or second degree relatives of the study population who reside, or have moved off the Reservation, are also eligible to participate.

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00339482

Locations


United States, Arizona
NIDDK, Phoenix
Phoenix, Arizona, United States, 85014

Sponsors and Collaborators

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Investigators


Principal Investigator:	William C Knowler, M.D.	National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

More Information

Publications:

Wolford JK, Bogardus C, Prochazka M. Genome-wide scan for CAG/CTG repeat expansions in Pimas with early onset of type 2 diabetes mellitus. Mol Genet Metab. 1999 Jan;66(1):62-7.

Lindsay RS, Dabelea D, Roumain J, Hanson RL, Bennett PH, Knowler WC. Type 2 diabetes and low birth weight: the role of paternal inheritance in the association of low birth weight and diabetes. Diabetes. 2000 Mar;49(3):445-9.

Silver K, Walston J, Yang Y, Pratley R, Ravussin E, Raben N, Shuldiner AR. Molecular scanning of the beta-3-adrenergic receptor gene in Pima Indians and Caucasians. Diabetes Metab Res Rev. 1999 May-Jun;15(3):175-80.

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

Hohenadel MG, Thearle MS, Grice BA, Huang H, Dai MH, Tao YX, Hunter LA, Palaguachi GI, Mou Z, Kim RC, Tsang MM, Haack K, Voruganti VS, Cole SA, Butte NF, Comuzzie AG, Muller YL, Baier LJ, Krakoff J, Knowler WC, Yanovski JA, Han JC. Brain-derived neurotrophic factor in human subjects with function-altering melanocortin-4 receptor variants. Int J Obes (Lond). 2014 Aug;38(8):1068-74. doi: 10.1038/ijo.2013.221. Epub 2013 Nov 26.


Responsible Party:	National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
ClinicalTrials.gov Identifier:	NCT00339482 History of Changes
Other Study ID Numbers:	9999760256 OH76-DK-0256
Study First Received:	June 19, 2006
Last Updated:	May 11, 2016
Health Authority:	United States: Federal Government

Keywords provided by National Institutes of Health Clinical Center (CC):


Epidemiology Type 2 Diabetes Vascular Complications	Retinopathy Nephropathy Genetics

Additional relevant MeSH terms:


Diabetes Mellitus Glucose Metabolism Disorders Metabolic Diseases Endocrine System Diseases

ClinicalTrials.gov processed this record on September 23, 2016