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. 2020 Nov 30;21(23):9144. doi: 10.3390/ijms21239144

Figure 5.

Figure 5

Stress induced rise in interleukin (IL)-1, IL-6, and cortisol levels as well as SNS activation causes peripheral insulin resistance, a Glu-OCN-drop and an increased leptin synthesis. In impaired blood brain barrier (BBB) after traumatic brain injury (TBI) central leptin levels and central effects are extremely increased, causing unphysiologic SNS-activation, Glu-OCN drop and disinhibition of bone formation after TBI which possibly causes the phenomenon of accelerated bone healing after combined bony and central trauma.