| [1] |  | 
																													
																						| [2] | ZHANG W X,WU H ,XU Q ,et al. Estrogen modulation of pain perception with a novel 17β-estradiol pretreatment regime in ovariectomized rats[J]. Biol Sex Differ ,2020 ,11 (1):2. DOI:10.1186/s13293-019-0271-5 . | 
																													
																						| [3] | LI L L,FAN X T ,WARNER M ,et al. Ablation of estrogen receptor alpha or beta eliminates sex differences in mechanical pain threshold in normal and inflamed mice[J]. Pain ,2009 ,143 (1/2):37-40. DOI:10.1016/j.pain.2009.01.005 . | 
																													
																						| [4] |  | 
																													
																						| [5] | LABASTIDA-RAMÍREZ A,RUBIO-BELTRÁN E ,VILLALÓN C M ,et al. Gender aspects of CGRP in migraine[J]. Cephalalgia ,2019 ,39 (3):435-444. DOI:10.1177/0333102417739584 . | 
																													
																						| [6] | SALDANHA C J,DUNCAN K A ,WALTERS B J . Neuroprotective actions of brain aromatase[J]. Front Neuroendocrinol ,2009 ,30 (2):106-118. DOI:10.1016/j.yfrne.2009.04.016 . | 
																													
																						| [7] | SANTEN R J,SIMPSON E . History of estrogen: its purification,structure,synthesis,biologic actions,and clinical implications[J]. Endocrinology ,2019 ,160 (3):605-625. DOI:10.1210/en.2018-00529 . | 
																													
																						| [8] | LU H,OZAWA H ,NISHI M ,et al. Serotonergic neurones in the dorsal raphe nucleus that project into the medial preoptic area contain oestrogen receptor beta[J]. J Neuroendocrinol ,2001 ,13 (10):839-845. DOI:10.1046/j.1365-2826.2001.00695.x . | 
																													
																						| [9] | ALEXANDER S P,CHRISTOPOULOS A ,DAVENPORT A P ,et al. The concise guide to pharmacology 2021/22:g protein-coupled receptors[J]. Br J Pharmacol ,2021 ,178 (Suppl 1):S27-156. DOI:10.1111/bph.15538 . | 
																													
																						| [10] | XU Z Z,XIE W L ,FENG Y Q ,et al. Positive interaction between GPER and β-alanine in the dorsal root ganglion uncovers potential mechanisms: mediating continuous neuronal sensitization and neuroinflammation responses in neuropathic pain[J]. J Neuroinflammation ,2022 ,19 (1):164. DOI:10.1186/s12974-022-02524-9 . | 
																													
																						| [11] | SHANG X S,ZHANG L R ,JIN R L ,et al. Estrogen regulation of the expression of pain factor NGF in rat chondrocytes[J]. J Pain Res ,2021 (14):931-940. DOI:10.2147/JPR.S297442 . | 
																													
																						| [12] | GOROWSKA-WOJTOWICZ E,DULIBAN M ,KOTULA-BALAK M ,et al. Modulatory effects of estradiol and its mixtures with ligands of GPER and PPAR on MAPK and PI3K/Akt signaling pathways and tumorigenic factors in mouse testis explants and mouse tumor leydig cells[J]. Biomedicines ,2022 ,10 (6):1390. DOI:10.3390/biomedicines10061390 . | 
																													
																						| [13] | JIANG N,AN J Y ,YANG K ,et al. NLRP3 inflammasome:a new target for prevention and control of osteoporosis?[J]. Front Endocrinol (Lausanne) ,2021 ,12 :752546. DOI:10.3389/fendo.2021.752546 . | 
																													
																						| [14] | DRAGIN N,NANCY P ,VILLEGAS J ,et al. Balance between estrogens and proinflammatory cytokines regulates chemokine production involved in thymic germinal center formation[J]. Sci Rep ,2017 ,7 (1):7970. DOI:10.1038/s41598-017-08631-5 . | 
																													
																						| [15] | WU X B,CAO D L ,ZHANG X ,et al. CXCL13/CXCR5 enhances sodium channel Nav1.8 current density via p38 MAP kinase in primary sensory neurons following inflammatory pain[J]. Sci Rep ,2016 ,6 :34836. DOI:10.1038/srep34836 . | 
																													
																						| [16] | SONG X X,JIN L Y ,LI X F ,et al. Substance P mediates estrogen modulation proinflammatory cytokines release in intervertebral disc[J]. Inflammation ,2021 ,44 (2):506-517. DOI:10.1007/s10753-020-01347-1 . | 
																													
																						| [17] | JI J,HE Q R ,LUO X ,et al. IL-23 enhances C-fiber-mediated and blue light-induced spontaneous pain in female mice[J]. Front Immunol ,2021 ,12 :787565. DOI:10.3389/fimmu.2021.787565 . | 
																													
																						| [18] |  | 
																													
																						| [19] | POHÓCZKY K,KUN J ,SZALONTAI B ,et al. Estrogen-dependent up-regulation of TRPA1 and TRPV1 receptor proteins in the rat endometrium[J]. J Mol Endocrinol ,2016 ,56 (2):135-149. DOI:10.1530/JME-15-0184 . | 
																													
																						| [20] | KAUR S,MCDONALD H ,TONGKHUYA S ,et al. Estrogen exacerbates the nociceptive effects of peripheral serotonin on rat trigeminal sensory neurons[J]. Neurobiol Pain ,2021 ,10 :100073. DOI:10.1016/j.ynpai.2021.100073 . | 
																													
																						| [21] | GU Y,ZHANG N X ,ZHU S J ,et al. Estradiol reduced 5-HT reuptake by downregulating the gene expression of Plasma Membrane Monoamine Transporter (PMAT,Slc29a4) through estrogen receptor β and the MAPK/ERK signaling pathway[J]. Eur J Pharmacol ,2022 ,924 :174939. DOI:10.1016/j.ejphar.2022.174939 . | 
																													
																						| [22] | MA W,ST-JACQUES B ,RUDAKOU U ,et al. Stimulating TRPV1 externalization and synthesis in dorsal root ganglion neurons contributes to PGE2 potentiation of TRPV1 activity and nociceptor sensitization[J]. Eur J Pain ,2017 ,21 (4):575-593. DOI:10.1002/ejp.959 . | 
																													
																						| [23] | COLLOCA L,LUDMAN T ,BOUHASSIRA D ,et al. Neuropathic pain[J]. Nat Rev Dis Primers ,2017 ,3 :17002. DOI:10.1038/nrdp.2017.2 . | 
																													
																						| [24] | MEACHAM K,SHEPHERD A ,MOHAPATRA D P ,et al. Neuropathic pain:central vs. peripheral mechanisms[J]. Curr Pain Headache Rep ,2017 ,21 (6):28. DOI:10.1007/s11916-017-0629-5 . | 
																													
																						| [25] | XU Z Z,CHEN Q Y ,DENG S Y ,et al. 17β-estradiol attenuates neuropathic pain caused by spared nerve injury by upregulating CIC-3 in the dorsal root ganglion of ovariectomized rats[J]. Front Neurosci ,2019 ,13 :1205. DOI:10.3389/fnins.2019.01205 . | 
																													
																						| [26] | DENG C,GU Y J ,ZHANG H ,et al. Estrogen affects neuropathic pain through upregulating N-methyl-D-aspartate acid receptor 1 expression in the dorsal root ganglion of rats[J]. Neural Regen Res ,2017 ,12 (3):464-469. DOI:10.4103/1673-5374.202925 . | 
																													
																						| [27] | MA J N,MCFARLAND K ,OLSSON R ,et al. Estrogen receptor beta selective agonists as agents to treat chemotherapeutic-induced neuropathic pain[J]. ACS Chem Neurosci ,2016 ,7 (9):1180-1187. DOI:10.1021/acschemneuro.6b00183 . | 
																													
																						| [28] | NADERI A,ASGARI A R ,ZAHED R ,et al. Estradiol attenuates spinal cord injury-related central pain by decreasing glutamate levels in thalamic VPL nucleus in male rats[J]. Metab Brain Dis ,2014 ,29 (3):763-770. DOI:10.1007/s11011-014-9570-z . | 
																													
																						| [29] | GUO W,MIYOSHI K ,DUBNER R ,et al. Spinal 5-HT3 receptors mediate descending facilitation and contribute to behavioral hypersensitivity via a reciprocal neuron-glial signaling cascade[J]. Mol Pain ,2014 ,10 :35. DOI:10.1186/1744-8069-10-35 . | 
																													
																						| [30] | KAUR S,HICKMAN T M ,LOPEZ-RAMIREZ A ,et al. Estrogen modulation of the pronociceptive effects of serotonin on female rat trigeminal sensory neurons is timing dependent and dosage dependent and requires estrogen receptor alpha[J]. Pain ,2022 ,163 (8):e899-916. DOI:10.1097/j.pain.0000000000002604 . | 
																													
																						| [31] | CHEN J H,SUN Y ,JU P J ,et al. Estrogen augmented visceral pain and colonic neuron modulation in a double-hit model of prenatal and adult stress[J]. World J Gastroenterol ,2021 ,27 (30):5060-5075. DOI:10.3748/wjg.v27.i30.5060 . | 
																													
																						| [32] | ZHOU L J,YANG T ,WEI X ,et al. Brain-derived neurotrophic factor contributes to spinal long-term potentiation and mechanical hypersensitivity by activation of spinal microglia in rat[J]. Brain Behav Immun ,2011 ,25 (2):322-334. DOI:10.1016/j.bbi.2010.09.025 . | 
																													
																						| [33] | IMLACH W L,BHOLA R F ,MOHAMMADI S A ,et al. Glycinergic dysfunction in a subpopulation of dorsal horn interneurons in a rat model of neuropathic pain[J]. Sci Rep ,2016 ,6 :37104. DOI:10.1038/srep37104 . | 
																													
																						| [34] | LYU C,MULDER J ,BARDE S ,et al. G protein-gated inwardly rectifying potassium channel subunits 1 and 2 are down-regulated in rat dorsal root ganglion neurons and spinal cord after peripheral axotomy[J]. Mol Pain ,2015 ,11 :44. DOI:10.1186/s12990-015-0044-z . | 
																													
																						| [35] | DEFAZIO R A,NAVARRO M A ,ADAMS C E ,et al. Estradiol enhances the depolarizing response to GABA and AMPA synaptic conductances in arcuate kisspeptin neurons by diminishing voltage-gated potassium currents[J]. J Neurosci ,2019 ,39 (48):9532-9545. DOI:10.1523/JNEUROSCI.0378-19.2019 . | 
																													
																						| [36] | SALEM M L,HOSSAIN M S ,NOMOTO K . Mediation of the immunomodulatory effect of beta-estradiol on inflammatory responses by inhibition of recruitment and activation of inflammatory cells and their gene expression of TNF-alpha and IFN-gamma[J]. Int Arch Allergy Immunol ,2000 ,121 (3):235-245. DOI:10.1159/000024323 . | 
																													
																						| [37] | LEE J Y,CHOI H Y ,JU B G ,et al. Estrogen alleviates neuropathic pain induced after spinal cord injury by inhibiting microglia and astrocyte activation[J]. Biochim Biophys Acta Mol Basis Dis ,2018 ,1864 (7):2472-2480. DOI:10.1016/j.bbadis.2018.04.006 . | 
																													
																						| [38] |  | 
																													
																						| [39] | ZAJĄCZKOWSKA R,KOCOT-KĘPSKA M ,LEPPERT W ,et al. Bone pain in cancer patients: mechanisms and current treatment[J]. Int J Mol Sci ,2019 ,20 (23):6047. DOI:10.3390/ijms20236047 . | 
																													
																						| [40] | YONEDA T,HIASA M ,NAGATA Y ,et al. Acidic microenvironment and bone pain in cancer-colonized bone[J]. Bonekey Rep ,2015 ,4 :690. DOI:10.1038/bonekey.2015.58 . | 
																													
																						| [41] | YONEDA T,HIASA M ,OKUI T ,et al. Sensory nerves: A driver of the vicious cycle in bone metastasis?[J]. J Bone Oncol ,2021 ,30 :100387. DOI:10.1016/j.jbo.2021.100387 . | 
																													
																						| [42] | QUAIL D F,JOYCE J A . Microenvironmental regulation of tumor progression and metastasis[J]. Nat Med ,2013 ,19 (11):1423-1437. DOI:10.1038/nm.3394 . | 
																													
																						| [43] | BARAL P,UDIT S ,Chiu IM . Pain and immunity:implications for host defence[J]. Nat Rev Immunol ,2019 ,19 (7):433-447. DOI:10.1038/s41577-019-0147-2 . | 
																													
																						| [44] | LI Y,CAI J ,HAN Y ,et al. Enhanced function of TRPV1 via up-regulation by insulin-like growth factor-1 in a rat model of bone cancer pain[J]. Eur J Pain ,2014 ,18 (6):774-784. DOI:10.1002/j.1532-2149.2013.00420.x . | 
																													
																						| [45] | DE FRANCESCO E M,PELLEGRINO M ,SANTOLLA M F ,et al. GPER mediates activation of HIF1α/VEGF signaling by estrogens[J]. Cancer Res ,2014 ,74 (15):4053-4064. DOI:10.1158/0008-5472.CAN-13-3590 . | 
																													
																						| [46] | ZHANG Z L,DENG M L ,HUANG J J ,et al. Microglial annexin A3 downregulation alleviates bone cancer-induced pain through inhibiting the Hif-1α/vascular endothelial growth factor signaling pathway[J]. Pain ,2020 ,161 (12):2750-2762. DOI:10.1097/j.pain.0000000000001962 . | 
																													
																						| [47] | SMEESTER B A,O'BRIEN E E ,MICHLITSCH K S ,et al. The relationship of bone-tumor-induced spinal cord astrocyte activation and aromatase expression to mechanical hyperalgesia and cold hypersensitivity in intact female and ovariectomized mice[J]. Neuroscience ,2016 ,324 :344-354. DOI: 10.1016/j.neuroscience.2016.03.030 . | 
																													
																						| [48] | XU M S,WANG Y ,XIA R L ,et al. Role of the CCL2-CCR2 signalling axis in cancer:mechanisms and therapeutic targeting[J]. Cell Prolif ,2021 ,54 (10):e13115. DOI:10.1111/cpr.13115 . | 
																													
																						| [49] | SHEN W,HU X M ,LIU Y N ,et al. CXCL12 in astrocytes contributes to bone cancer pain through CXCR4-mediated neuronal sensitization and glial activation in rat spinal cord[J]. J Neuroinflammation ,2014 ,11 :75. DOI:10.1186/1742-2094-11-75 . | 
																													
																						| [50] | HE M,YU W W ,CHANG C ,et al. Estrogen receptor α promotes lung cancer cell invasion via increase of and cross-talk with infiltrated macrophages through the CCL2/CCR2/MMP9 and CXCL12/CXCR4 signaling pathways[J]. Mol Oncol ,2020 ,14 (8):1779-1799. DOI:10.1002/1878-0261.12701 . | 
																													
																						| [51] | LUO J,HUANG X X ,LI Y L ,et al. GPR30 disrupts the balance of GABAergic and glutamatergic transmission in the spinal cord driving to the development of bone cancer pain[J]. Oncotarget ,2016 ,7 (45):73462-73472. DOI:10.18632/oncotarget.11867 . | 
																													
																						| [52] | FRADET A,AOREL H ,BOUAZZA L ,et al. Dual function of ERRα in breast cancer and bone metastasis formation:implication of VEGF and osteoprotegerin[J]. Cancer Res ,2011 ,71 (17):5728-5738. DOI:10.1158/0008-5472 . | 
																													
																						| [53] | MATHILDE B,ALEXANDRA L,CYRIL B,et al. ERRα expression in bone metastases leads to an exacerbated antitumor immune response[J]. Cancer Res,2020,80(13):2914-2926. | 
																													
																						| [54] | FRADET A,BOUCHET M ,DELLIAUX C ,et al. Estrogen related receptor alpha in castration-resistant prostate cancer cells promotes tumor progression in bone[J]. Oncotarget ,2016 ,7 (47):77071-77086. DOI:10.18632/oncotarget.12787 . |