1) Abbadie C, Lindia JA, Cumiskey AM, et al:Impaired neuropathic pain responses in mice lacking the chemokine receptor CCR2.Proc Natl Acad Sci U S A 100:7947-7952, 2003
2) Beggs S, Trang T, Salter MW:P2X4R+ microglia drive neuropathic pain. Nat Neurosci 15:1068-1073, 2012
3) Biber K, Tsuda M, Tozaki-Saitoh H, et al:Neuronal CCL21 up-regulates microglia P2X4 expression and initiates neuropathic pain development. EMBO J 30:1864-1873, 2011
4) Coull JA, Beggs S, Boudreau D, et al:BDNF from microglia causes the shift in neuronal anion gradient underlying neuropathic pain. Nature 438:1017-1021, 2005
5) Ginhoux F, Greter M, Leboeuf M, et al:Fate mapping analysis reveals that adult microglia derive from primitive macrophages. Science 330:841-845, 2010
6) Haraguchi K, Kawamoto A, Isami K, et al:TRPM2 contributes to inflammatory and neuropathic pain through the aggravation of pronociceptive inflammatory responses in mice. J Neurosci 32:3931-3941, 2012
7) Keller AF, Beggs S, Salter MW, et al:Transformation of the output of spinal lamina I neurons after nerve injury and microglia stimulation underlying neuropathic pain. Mol Pain 3:27, 2007
8) Kim D, You B, Jo EK, et al:NADPH oxidase 2-derived reactive oxygen species in spinal cord microglia contribute to peripheral nerve injury-induced neuropathic pain. Proc Natl Acad Sci U S A 107:14851-14856, 2010
9) Masuda T, Tsuda M, Yoshinaga R, et al:IRF8 is a critical transcription factor for transforming microglia into a reactive phenotype. Cell Rep 1:334-340, 2012
10) Nagata K, Imai T, Yamashita T, et al:Antidepressants inhibit P2X4 receptor function:a possible involvement in neuropathic pain relief. Mol Pain 5:20, 2009
11) Saederup N, Cardona AE, Croft K, et al:Selective chemokine receptor usage by central nervous system myeloid cells in CCR2-red fluorescent protein knock-in mice. PLoS One 5:e13693, 2010
12) Tsuda M, Shigemoto-Mogami Y, Koizumi S, et al:P2X4 receptors induced in spinal microglia gate tactile allodynia after nerve injury. Nature 424:778-783, 2003
13) Tsuda M, Inoue K, Salter MW:Neuropathic pain and spinal microglia:a big problem from molecules in "small" glia. Trends Neurosci 28:101-107, 2005
14) Tsuda M, Kuboyama K, Inoue T, et al:Behavioral phenotypes of mice lacking purinergic P2X4 receptors in acute and chronic pain assays. Mol Pain 5:28, 2009
15) Tsuda M, Masuda T, Kitano J, et al:IFN-gamma receptor signaling mediates spinal microglia activation driving neuropathic pain. Proc Natl Acad Sci U S A 106:8032-8037, 2009
16) Tsuda M, Kohro Y, Yano T, et al:JAK-STAT3 pathway regulates spinal astrocyte proliferation and neuropathic pain maintenance in rats. Brain 134:1127-1139, 2011
17) Tsuda M, Beggs S, Salter MW, et al:Microglia and intractable chronic pain. Glia 61:55-61, 2013
18) Ulmann L, Hatcher JP, Hughes JP, et al:Up-regulation of P2X4 receptors in spinal microglia after peripheral nerve injury mediates BDNF release and neuropathic pain. J Neurosci 28:11263-11268, 2008
19) Zhang J, Shi XQ, Echeverry S, et al:Expression of CCR2 in both resident and bone marrow-derived microglia plays a critical role in neuropathic pain. J Neurosci 27:12396-12406, 2007