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Chronic low back pain: a mini-review on pharmacological management and pathophysiological insights from clinical and pre-clinical data

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Abstract

Globally, low back pain (LBP) is one of the most common health problems affecting humans. The lifetime prevalence of non-specific LBP is approximately 84%, with the chronic prevalence at about 23%. Chronic LBP in humans is defined as LBP that persists for more than 12 weeks without a significant pain improvement. Although there are numerous evidence-based guidelines on the management of acute LBP, this is not the case for chronic LBP, which is regarded as particularly difficult to treat. Research aimed at discovering new drug treatments for alleviation of chronic mechanical LBP is lacking due to the paucity of knowledge on the pathobiology of this condition, despite its high morbidity in the affected adult population. For a debilitating condition such as chronic LBP, it is necessary to assess the sustained effects of pharmacotherapy of various agents spanning months to years. Although many rodent models of mechanical LBP have been developed to mimic the human condition, some of the major shortcomings of many of these models are (1) the presence of a concurrent neuropathic component that develops secondary to posterior intervertebral disc puncture, (2) severe model phenotype, and/or (3) use of behavioural endpoints that have yet to be validated for pain. Hence, there is a great, unmet need for research aimed at discovering new biological targets in rodent models of chronic mechanical LBP for use in drug discovery programs as a means to potentially produce new highly effective and well-tolerated analgesic agents to improve relief of chronic LBP. On a cautionary note, it must be borne in mind that because humans and rats display orthograde and pronograde postures, respectively, the different mechanical forces on their spines add to the difficulty in translation of promising rodent data to humans.

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Acknowledgements

TP is supported by the Research Training Program to undertake a Ph.D. at the Centre for Integrated Preclinical Drug Development (CIPDD) at The University of Queensland. The authors acknowledge the Queensland Government Smart State Research Programme for supporting CIPDD research infrastructure. CIPDD is also supported by Therapeutic Innovation Australia (TIA). TIA is supported by the Australian Government through the National Collaborative Research Infrastructure Strategy (NCRIS) program.

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Correspondence to Maree T. Smith.

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Park, T.S.W., Kuo, A. & Smith, M.T. Chronic low back pain: a mini-review on pharmacological management and pathophysiological insights from clinical and pre-clinical data. Inflammopharmacol 26, 881–898 (2018). https://doi.org/10.1007/s10787-018-0493-x

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  • DOI: https://doi.org/10.1007/s10787-018-0493-x

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