Effects of Metformin in a Non-Diabetic Patient Population
الكلمات الدالة
نبذة مختصرة
وصف
Metformin is considered first-line therapy for patients with type two diabetes with hyperglycemia that cannot be controlled with lifestyle alone. Unlike other oral medications, metformin is favored for its insulin-sensitizing effects resulting in improved glycemic control, weight loss, and overall improvement of metabolic syndrome. Over the past fifteen years, metformin has received significant attention for its other potential therapeutic uses. Metformin has been found to decrease the rate of age-related illness progression improving longevity, especially in the setting of cancer. Recent clinical trials across multiple disease states have shown metformin to decrease all-cause mortality in diabetic and non-diabetic patients. Additionally, in both animal models and human trails, metformin has been shown to decrease the risk of arterial and venous thrombosis without affecting bleeding time through its interaction with platelet mitochondria. Although the mechanisms by which metformin effects longevity is an active area of both basic science and clinical research, it clearly has anti-inflammatory properties which are both independent and dependent of glycemic control. Recently, surgical outcomes have focused on optimizing older, deconditioned patients prior to the operation with varying protocols referred to as prehabilitation. These programs work to improve the body's response to the surgical stress resulting in improved wound healing, decreased postoperative complications, and decreased hospital length of stay. The affect of metformin, like increasing physical activity, has widespread affects on physiology. The investigators, therefore, hypothesize that metformin administration to non-diabetic adults will improve clinical outcomes to physiologic stress by improving underlying immune and inflammatory responses, that can be deleterious.
Subjects will have venous samples collected to better understand the cellular response to inflammation, thrombosis, and cellular respiration at baseline, at 4 time points throughout the 90 day exposure to metformin, and 30 days following the completion of exposure to metformin. At the same time points, subjects will have stool samples collected in order to assess changes in their microbiome. Finally, subjects will undergo cognitive testing through the NIH toolbox as well as physiologic testing including (six-minute walk test, grip strength as measured by a dynamometer, and a short physical performance battery) at baseline, after 90 days of exposure, and again 30 days after the completion of exposure.
تواريخ
آخر التحقق: | 04/30/2020 |
تم الإرسال لأول مرة: | 02/27/2018 |
تم إرسال التسجيل المقدر: | 12/07/2018 |
أول نشر: | 12/11/2018 |
تم إرسال آخر تحديث: | 05/04/2020 |
آخر تحديث تم نشره: | 05/05/2020 |
تاريخ بدء الدراسة الفعلي: | 01/21/2019 |
تاريخ الإنجاز الأساسي المقدر: | 03/30/2020 |
التاريخ المتوقع لانتهاء الدراسة: | 03/30/2020 |
حالة أو مرض
التدخل / العلاج
Drug: MetFORMIN Hydrochloride ER
مرحلة
مجموعات الذراع
ذراع | التدخل / العلاج |
---|---|
Experimental: 500mg exposure Subjects will be exposed to 500mg of daily MetFORMIN Hydrochloride ER for up to 90 days. | |
Experimental: 1000mg exposure Subjects will be exposed to 1000mg of daily MetFORMIN Hydrochloride ER for up to 90 days. | |
Experimental: 1500mg exposure Subjects will be exposed to 1500mg of daily MetFORMIN Hydrochloride ER for up to 90 days. |
معايير الأهلية
الأعمار المؤهلة للدراسة | 55 Years إلى 55 Years |
الأجناس المؤهلة للدراسة | All |
يقبل المتطوعين الأصحاء | نعم |
المعايير | Inclusion Criteria: 1. Age ≥55 and ≤85 years of age 2. Non-diabetic 3. Adjusted risk analysis index (RAI) 20-42 4. Estimated glomerular filtration rate >45 5. No evidence of hepatic dysfunction on comprehensive metabolic panel 6. No clinical evidence of cardiac failure 7. Existing University of Pittsburgh Medical Center Patients Exclusion Criteria: 1. Hypersensitivity to metformin or any component of the formulation 2. Acute or chronic metabolic acidosis with or without coma 3. Pregnant or breastfeeding females 4. Evidence or history of hepatic, renal, or cardiopulmonary failure 5. Excessive acute or chronic ethanol use 6. Planned or known hospital admission, exposure to anesthesia, or surgical intervention 30 days prior to study or scheduled 30 days after the trial initiation 7. Laboratory analysis showing HbgA1c >6.1 or eGFR <44 on baseline labs |
النتيجة
مقاييس النتائج الأولية
1. Ex vivo cytokine response of peripheral blood mononucleocytes (PBMC) to inflammatory stimuli compared to baseline, throughout exposure, and following exposure to metformin. [Day 0 (baseline), 30, 60, 90, and 120 (30 days post metformin exposure)]
مقاييس النتائج الثانوية
1. Quantify the bacterial population profile of the microbiome via stool samples. [Day 0 (baseline), 30, 60, 90, and 120 (30 days post metformin exposure)]
2. Measure the rate of clotting of peripheral blood with whole blood aggregometry in response to collagen. [Day 0 (baseline), 30, 60, 90, and 120 (30 days post metformin exposure)]
3. Measure the rate of thrombosis of peripheral blood. [Day 0 (baseline), 30, 60, 90, and 120 (30 days post metformin exposure)]
4. Changes from baseline in Short Physical Performance Battery (SPPB) during and following exposure to metformin. [Day 0 (baseline), 90, and 120 (30 days post metformin exposure)]
5. Changes from baseline in grip strength via a dynamometer during and following exposure to metformin. [Day 0 (baseline), 90, and 120 (30 days post metformin exposure)]
6. Mitochondrial respiration in both PBMCs and platelets. [Day 0 (baseline), 30, 60, 90, and 120 (30 days post metformin exposure)]
7. Mitochondrial content in both PBMCs and platelets. [Day 0 (baseline), 30, 60, 90, and 120 (30 days post metformin exposure)]
8. Measure biogenesis of PBMCs. [Day 0 (baseline), 30, 60, 90, and 120 (30 days post metformin exposure)]