Mechanism of interaction between excess amounts of fatty acids, diacylglycerol, and ceramide and insulin action within the hepatocyte. Diacylglycerol activates PKCε and inhibits activation of IRS-1 by the insulin receptor. Ceramides cause sequestration of Akt2 by PKCζ and inhibit insulin control of gluconeogenesis. These mechanisms have recently been reviewed (99). FFA, free-fatty acid; TG, triacylglycerol.
In diabetes, either the pancreas makes insufficient levels of insulin so cells absorb glucose poorly or cells themselves become insulin resistant and thus unable to absorb glucose despite adequate insulin levels. Both types of change increase blood sugar levels above normal. Parsed this way, type I and type II diabetes overlap some but also differ.
A randomized, sham-controlled, crossover study of 50 adults with type 2 diabetes evaluated the effectiveness of Percutaneous Nerve Stimulation (PENS) therapy in the treatment of neuropathic pain. PENS is a modern adaptation of acupuncture that uses percutaneously placed acupuncture needles to stimulate peripheral sensory and motor nerves innervating the region of neuropathic pain. The results showed that active PENS treatment improved neuropathic pain symptoms in all patients. In addition to reducing pain, the treatment improved physical activity levels, sense of well-being, and quality of sleep and reduced oral non-opioid analgesic medication requirements.2