Endocrinology, Diabetes, and Metabolism Commons^™

Use Of An Anaerobic Chamber Environment For The Assay Of Endogenous Cellular Protein-Tyrosine Phosphatase Activities., Li Zhu, Barry Goldstein

Department of Medicine Faculty Papers

Protein-tyrosine phosphatases (PTPases) have a catalytic cysteine residue whose reduced state is integral to the reaction mechanism. Since exposure to air can artifactually oxidize this highly reactive thiol, PTPase assays have typically used potent reducing agents to reactivate the enzymes present; however, this approach does not allow for the measurement of the endogenous PTPase activity directly isolated from the in vivo cellular environment. Here we provide a method for using an anaerobic chamber to preserve the activity of the total PTPase complement in a tissue lysate or of an immunoprecipitated PTPase homolog to characterize their endogenous activation state. Comparison with …

Reduction In The Incidence Of Type 2 Diabetes With Lifestyle Intervention Or Metformin., William C. Knowler, Elizabeth Barrett-Connor, Sarah E. Fowler, Richard F. Hamman, John M. Lachin, Elizabeth A. Walker, David M. Nathan, P. G. Watson, J. T. Mendoza, K. A. Smith, J. Caro, B. Goldstein, C. Lark, L. Menefee, L. Murphy, C. Pepe, J. M. Spandorfer

Department of Medicine Faculty Papers

BACKGROUND: Type 2 diabetes affects approximately 8 percent of adults in the United States. Some risk factors--elevated plasma glucose concentrations in the fasting state and after an oral glucose load, overweight, and a sedentary lifestyle--are potentially reversible. We hypothesized that modifying these factors with a lifestyle-intervention program or the administration of metformin would prevent or delay the development of diabetes.

METHODS: We randomly assigned 3234 nondiabetic persons with elevated fasting and post-load plasma glucose concentrations to placebo, metformin (850 mg twice daily), or a lifestyle-modification program with the goals of at least a 7 percent weight loss and at least …

Prevalence And Risk Factors For Vaginal Candida Colonization In Women With Type 1 And Type 2 Diabetes, Ella M. De Leon, Scott J. Jacober, Jack D. Sobel, Betsy Foxman

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Diabetes mellitus increases the rate of vaginal colonization and infection with Candida species

Methods

We surveyed women with diabetes receiving care at either an urban or suburban diabetes clinic to examine the relationship between vaginal Candida colonization, diabetes type and duration, and HbA_1c level. 101 participants completed the self-administered questionnaire and self-collected a vaginal swab for Candida culture. Candida colonization was similar by age and race.

Results

Type 1 diabetics were three times as likely as type 2 diabetics to be colonized with any Candida species (OR = 3.4; 95% CI: 1.03, 11.41; p = 0.04); even …