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Targeting Inflammation With Salsalate in Type 1 Diabetes Neuropathy

2016-10-19 02:38:21 | BioPortfolio

Summary

Diabetic neuropathy (DN) is the most common chronic complication of diabetes, affecting up to50% of individuals with type 1 diabetes (T1DM).

Multiple pre-clinical and clinical studies demonstrate a pathogenic role for inflammation, especially cytokine production, in the disease course of DN and CAN. This suggests that agents with known anti-inflammatory properties, such as salicylates, may prevent the development of DN and the pain associated with DN. This study builds upon and expands on prior work done by the investigators with salsalate, a pro-drug form of salicylate, as an agent to address inflammatory pathways in people with T1DM.

Description

Diabetic neuropathy (DN) is the most common chronic complication of diabetes, affecting up to50% of individuals with type 1 diabetes (T1DM). DN is a progressive disease, leading to severe morbidity and staggering health care costs. Patients experience poor quality of life due to pain, loss of sensation leading to poor balance, falls and eventual foot deformities with high rates of ulcerations and amputations. While not as commonly diagnosed as DN, cardiovascular autonomic neuropathy (CAN) carries equal morbidity with patients experiencing orthostasis, arrhythmias and premature death).

Despite the high morbidity associated with DN, most randomized clinical trials evaluating therapies for established DN have been disappointing. To date there is no pathogenetic treatment for this condition. The Diabetes Control and Complications Trial (DCCT) demonstrated that intensive control designed to achieve near-normal glycemia is essential in reducing the risk of DN development in type 1 diabetes (8, 9). However, attainable intensive glycemic control, although necessary, is insufficient to prevent adverse nervous system effects, justifying a therapeutic need to identify new drug targets to treat DN early in its course. One such new therapeutic target is inflammation. Multiple pre-clinical and clinical studies demonstrate a pathogenic role for inflammation, especially cytokine production, in the disease course of DN and CAN. This suggests that agents with known anti-inflammatory properties, such as salicylates, may prevent the development of DN and the pain associated with DN. Salsalate, a pro-drug form of salicylate, is a FDA approved drug commonly indicated for relief of the signs and symptoms of rheumatoid arthritis, osteoarthritis and related rheumatic disorders. In vitro and in vivo studies and human trials have shown that salicylate therapy is effective in controlling low grade inflammation in diabetes by inhibition of the inhibitor of the κB kinase (IKKβ)/NF-κB pathway. It has a large margin of safety (unlike other salicylates), and a low cost. There is also extensive experience with long-term human use of salsalate.

Several studies show that salsalate causes no greater intestinal occult blood loss than placebo and has no suppressive effects on renal prostaglandin production in contrast to aspirin or NSAIDs. The recently published NIDDK-funded "Targeting Inflammation Using Salsalate in Type 2 Diabetes (TINSAL-T2D)" trial confirmed salutary effects of 3.5 gram/day salsalate on markers of inflammation, glucose control and overall safety after 48 weeks patients with type 2 diabetes. The Investigators' initial NIDDK funded R03 (DK 094499) grant confirmed the safety and feasibility of targeting inflammation with salsalate treatment in T1DM subjects with DN. The Investigators' current study builds upon and expands their initial promising results and will either confirm or refute the therapeutic efficacy of salsalate in a larger T1DM cohort.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment

Conditions

Type 1 Diabetes

Intervention

Salsalate, PLACEBO

Location

University of Michigan Health System
Ann Arbor
Michigan
United States
48109

Status

Recruiting

Source

University of Michigan

Results (where available)

View Results

Links

Published on BioPortfolio: 2016-10-19T02:38:21-0400

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Medical and Biotech [MESH] Definitions

The time period before the development of symptomatic diabetes. For example, certain risk factors can be observed in subjects who subsequently develop INSULIN RESISTANCE as in type 2 diabetes (DIABETES MELLITUS, TYPE 2).

A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.

A severe type of hyperlipidemia, sometimes familial, that it is characterized by the elevation of both plasma CHYLOMICRONS and TRIGLYCERIDES contained in VERY-LOW-DENSITY LIPOPROTEINS. Type V hyperlipoproteinemia is often associated with DIABETES MELLITUS and is not caused by reduced LIPOPROTEIN LIPASE activity as in HYPERLIPOPROTEINEMIA TYPE I .

Urination of a large volume of urine with an increase in urinary frequency, commonly seen in diabetes (DIABETES MELLITUS; DIABETES INSIPIDUS).

A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence.

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