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Severe Head Trauma and Omega-3 Fatty Acids

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Diet and Nutrition in Critical Care

Abstract

Severe traumatic brain injury (TBI), with its diverse heterogeneity and prolonged secondary pathogenesis, remains a clinical challenge. Current medical management of TBI patients appropriately focuses on specialized prehospital care, intensive acute clinical care, and long-term rehabilitation but lacks clinically proven effective management with neuroprotective and neuroregenerative agents. Clinical studies thus far have failed to identify an effective treatment strategy as they typically have targeted single enzymatic factors in an attempt to identify a pharmacologic target rather than considering multiple mechanisms of injury with a more holistic approach. A combination of targets controlling aspects of neuroprotection, neuroinflammation, and regeneration is needed. Omega-3 fatty acids (ω-3FA) offer the advantage of this poly-target approach. Although further clinical trial research is needed to establish the true advantage of using ω-3FA, there is a growing body of strong preclinical evidence, and clinical experience suggests that benefits may be possible from aggressively adding substantial amounts of ω-3FA to optimize the nutritional foundation of severe TBI patients. Administration of substantial and optimal doses of ω-3FA early in the course of TBI, even in the prehospital or emergency department setting, has the potential to improve outcomes from this potentially devastating public health problem. With evidence of unsurpassed safety and tolerability, ω-3FA should be considered mainstream, conventional medicine, if conventional medicine can overcome its inherent bias against nutritional, non-pharmacologic therapies.

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Abbreviations

ω-3FAs:

Omega-3 polyunsaturated fatty acids

ω-6FAs:

Omega-6 polyunsaturated fatty acids

AA:

Arachidonic acid

ALA:

Alpha-linolenic acid

APP:

β-Amyloid precursor protein

BDNF:

Brain-derived neurotrophic factor

CaMKII:

Calcium/calmodulin-dependent kinase II

COX:

Cyclooxygenase

CREB:

cAMP-responsive element binding

CT:

Computerized tomography

DAI:

Diffuse axonal injury

DHA:

Docosahexaenoic acid

DHA-Alb:

DHA complexed to albumin

EPA:

Eicosapentaenoic acid

FDA:

Food and Drug Administration (United States)

GCS:

Glasgow Coma Scale

GRAS:

Generally recognizable as safe

H/I:

Hypoxic–ischemic

ICP:

Intracranial pressure

ICU:

Intensive care unit

IL-6:

Interleukin-6

IL-1β:

Interleukin-1 beta

IND:

Investigational new drug

LOX:

Lipoxygenase

LTB4:

Leukotriene B4

Mg:

Milligrams

MRI:

Magnetic resonance imaging

NPD1:

Neuroprotectin D1

PE:

Phosphatidylethanolamine

PEG:

Percutaneous endoscopic gastrostomy

PGE2:

Prostaglandin E2

PLA2:

Phospholipase A2

PS:

Phosphatidylserine

RXR:

Retinoid X receptors

SCI:

Spinal cord injury

SIR-2:

Silent information regulator 2

SOD:

Superoxide dismutase

Syn-1:

Synapsin I

TBI:

Traumatic brain injury

TNF-α:

Tumor necrosis factor alpha

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Lewis, M.D. (2015). Severe Head Trauma and Omega-3 Fatty Acids. In: Rajendram, R., Preedy, V.R., Patel, V.B. (eds) Diet and Nutrition in Critical Care. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7836-2_114

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