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Ji NN, Du L, Wang Y, Wu K, Chen ZY, Hua R, Zhang YM. Small-Conductance Ca 2+-Activated K + Channels 2 in the Hypothalamic Paraventricular Nucleus Precipitates Visceral Hypersensitivity Induced by Neonatal Colorectal Distension in Rats. Front Pharmacol 2021; 11:605618. [PMID: 33584280 PMCID: PMC7873043 DOI: 10.3389/fphar.2020.605618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 12/14/2020] [Indexed: 01/30/2023] Open
Abstract
Visceral hypersensitivity is one of the pivotal pathophysiological features of visceral pain in irritable bowel syndrome (IBS). Small-conductance Ca2+-activated K+ channel (SK) is critical for a variety of functions in the central nervous system (CNS), nonetheless, whether it is involved in the pathogenesis of visceral hypersensitivity remain elusive. In this study, we examined mechanism of SK2 in hypothalamic paraventricular nucleus (PVN) in the pathogenesis of visceral hypersensitivity induced by neonatal colorectal distension (CRD). Rats undergoing neonatal CRD presented with visceral hypersensitivity as well as downregulated membrane SK2 channel and p-PKA. Intra-PVN administration of either the membrane protein transport inhibitor dynasore or the SK2 activator 1-EBIO upregulated the expression of membrane SK2 in PVN and mitigated visceral hypersensitivity. In addition, 1-EBIO administration reversed the increase in neuronal firing rates in PVN in rats undergoing neonatal CRD. On the contrary, intra-PVN administration of either the SK2 inhibitor apamin or PKA activator 8-Br-cAMP exacerbated the visceral hypersensitivity. Taken together, these findings demonstrated that visceral hypersensitivity is related to the downregulation of membrane SK2 in PVN, which may be attributed to the activation of PKA; pharmacologic activation of SK2 alleviated visceral hypersensitivity, which brings prospect of SK2 activators as a new intervention for visceral pain.
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Affiliation(s)
- Ning-Ning Ji
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
| | - Lei Du
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China.,Anesthesiology Department of the Nanjing Children's Hospital, Nanjing, China
| | - Ying Wang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
| | - Ke Wu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
| | - Zi-Yang Chen
- Department of Anesthesiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Rong Hua
- Institute of Emergency Rescue Medicine, Xuzhou Medical University, Xuzhou, China
| | - Yong-Mei Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
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Diaz-delCastillo M, Hansen RB, Appel CK, Nielsen L, Nielsen SN, Karyniotakis K, Dahl LM, Andreasen RB, Heegaard AM. Modulation of Rat Cancer-Induced Bone Pain is Independent of Spinal Microglia Activity. Cancers (Basel) 2020; 12:cancers12102740. [PMID: 32987667 PMCID: PMC7598664 DOI: 10.3390/cancers12102740] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/20/2020] [Accepted: 09/21/2020] [Indexed: 12/17/2022] Open
Abstract
The dissemination of cancer to bone can cause significant cancer-induced bone pain (CIBP), severely impairing the patient's quality of life. Several rodent models have been developed to explore the nociceptive mechanisms of CIBP, including intratibial inoculation of breast carcinoma cells in syngeneic Sprague Dawley rats. Using this model, we investigated whether resident spinal microglial cells are involved in the transmission and modulation of CIBP, a long-debated disease feature. Immunohistochemical staining of ionizing calcium-binding adaptor molecule 1 (Iba-1) and phosphorylated p38-mitogen-activated protein kinase (P-p38 MAPK) showed no spinal microglial reaction in cancer-bearing rats, independently of disease stage, sex, or carcinoma cell line. As a positive control, significant upregulation of both Iba-1 and P-p38 was observed in a rat model of neuropathic pain. Additionally, intrathecal administration of the microglial inhibitor minocycline did not ameliorate pain-like behaviors in cancer-bearing rats, in contrast to spinal morphine administration. Our results indicate that microglial reaction is not a main player in CIBP, adding to the debate that even within the same models of CIBP, significant variations are seen in disease features considered potential drug targets. We suggest that this heterogeneity may reflect the clinical landscape, underscoring the need for understanding the translational value of CIBP models.
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Sun RM, Wei J, Wang SS, Xu GY, Jiang GQ. Upregulation of lncRNA-NONRATT021203.2 in the dorsal root ganglion contributes to cancer-induced pain via CXCL9 in rats. Biochem Biophys Res Commun 2020; 524:983-989. [PMID: 32061390 DOI: 10.1016/j.bbrc.2020.01.163] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 01/30/2020] [Indexed: 12/16/2022]
Abstract
Cancer-induced pain (CIP) is a kind of chronic pain that occurs during cancer progression over time. However, the mechanisms are largely unknown, and clinical treatment remains challenging. LncRNAs have been reported to play critical roles in various biological processes, including chronic pain. The aim of our study was to investigate whether lncRNAs participate in the development of CIP by regulating the expression levels of some molecules related to pain modulation. The CIP model was established by injecting Walker 256 mammary gland tumor cells into the tibial canal of rats. In this study, we found that lncRNA-NONRATT021203.2 was increased in the CIP rats and that lncRNA-NONRATT021203.2-siRNA could relieve hyperalgesia in these rats. For elucidation of the underlying mechanism, we showed that lncRNA-NONRATT021203.2 could target C-X-C motif chemokine ligand 9 (CXCL9), which was increased in the CIP rats, and that CXCL9-siRNA could relieve hyperalgesia. At the same time, silencing lncRNA-NONRATT021203.2 expression decreased the mRNA and protein levels of CXCL9. Immunofluorescence analysis showed that CXCL9 was mainly expressed in the CGRP-positive and IB4-positive DRG neurons. Further research showed that lncRNA-NONRATT021203.2 and CXCL9 were colocalized in the DRG neurons. Our data suggested that lncRNA-NONRATT021203.2 participated in the CIP in rats and likely mediates the upregulation of CXCL9. The present study provided us with a new potential target for the clinical treatment of cancer-induced pain.
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Affiliation(s)
- Rong-Mao Sun
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, PR China
| | - Jinrong Wei
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, PR China
| | - Shu-Sheng Wang
- Center for Translational Medicine, Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, 215600, PR China
| | - Guang-Yin Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, The Second Affiliated Hospital, Soochow University, Suzhou, 215123, PR China; Center for Translational Medicine, Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, 215600, PR China
| | - Guo-Qin Jiang
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, PR China.
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Zhang S, Lv F, Yuan Y, Fan C, Li J, Sun W, Hu J. Whole-Brain Mapping of Monosynaptic Afferent Inputs to Cortical CRH Neurons. Front Neurosci 2019; 13:565. [PMID: 31213976 PMCID: PMC6558184 DOI: 10.3389/fnins.2019.00565] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 05/16/2019] [Indexed: 01/02/2023] Open
Abstract
Corticotropin-releasing hormone (CRH) is a critical neuropeptide modulating the mammalian stress response. It is involved in many functional activities within various brain regions, among which there is a subset of CRH neurons occupying a considerable proportion of the cortical GABAergic interneurons. Here, we utilized rabies virus-based monosynaptic retrograde tracing system to map the whole-brain afferent presynaptic partners of the CRH neurons in the anterior cingulate cortex (ACC). We find that the ACC CRH neurons integrate information from the cortex, thalamus, hippocampal formation, amygdala, and also several other midbrain and hindbrain nuclei. Furthermore, our results reveal that ACC CRH neurons receive direct inputs from two neuromodulatory systems, the basal forebrain cholinergic neurons and raphe serotoninergic neurons. These findings together expand our knowledge about the connectivity of the cortical GABAergic neurons and also provide a basis for further investigation of the circuit function of cortical CRH neurons.
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Affiliation(s)
- Shouhua Zhang
- Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
- School of Life Sciences and Technology, ShanghaiTech University, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Fei Lv
- School of Life Sciences and Technology, ShanghaiTech University, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
- iHuman Institute, ShanghaiTech University, Shanghai, China
- Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
| | - Yuan Yuan
- School of Life Sciences and Technology, ShanghaiTech University, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
- Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
| | - Chengyu Fan
- School of Life Sciences and Technology, ShanghaiTech University, Shanghai, China
| | - Jiang Li
- Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - Wenzhi Sun
- School of Life Sciences and Technology, ShanghaiTech University, Shanghai, China
- iHuman Institute, ShanghaiTech University, Shanghai, China
- Chinese Institute for Brain Research, Beijing, China
| | - Ji Hu
- School of Life Sciences and Technology, ShanghaiTech University, Shanghai, China
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Majuta LA, Mitchell SA, Kuskowski MA, Mantyh PW. Anti-nerve growth factor does not change physical activity in normal young or aging mice but does increase activity in mice with skeletal pain. Pain 2018; 159:2285-2295. [PMID: 29994990 PMCID: PMC6233725 DOI: 10.1097/j.pain.0000000000001330] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Anti-nerve growth factor (anti-NGF) therapy has shown significant promise in attenuating several types of skeletal pain. However, whether anti-NGF therapy changes the level of physical activity in individuals with or without skeletal pain is largely unknown. Here, automated day/night activity boxes monitored the effects of anti-NGF treatment on physical activity in normal young (3 months old) and aging (18-23 months old) mice and mice with bone fracture pain. Although aging mice were clearly less active and showed loss of bone mass compared with young mice, anti-NGF treatment had no effect on any measure of day/night activity in either the young or aging mice. By contrast, in mice with femoral fracture pain, anti-NGF treatment produced a clear increase (10%-27%) in horizontal activity, vertical rearing, and velocity of travel compared with the Fracture + Vehicle group. These results suggest, just as in humans, mice titrate their level of physical activity to their level of skeletal pain. The level of skeletal pain may in part be determined by the level of free NGF that seems to rise after injury but not normal aging of the skeleton. In terms of bone healing, animals that received anti-NGF showed an increase in the size of calcified callus but no increase in the number of displaced fractures or time to cortical union. As physical activity is the best nondrug treatment for many patients with skeletal pain, anti-NGF may be useful in reducing pain and promoting activity in these patients.
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Affiliation(s)
- Lisa A. Majuta
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724
| | | | | | - Patrick W. Mantyh
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724
- Cancer Center, University of Arizona, Tucson, AZ 85724
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Kong X, Wei J, Wang D, Zhu X, Zhou Y, Wang S, Xu GY, Jiang GQ. Upregulation of Spinal Voltage-Dependent Anion Channel 1 Contributes to Bone Cancer Pain Hypersensitivity in Rats. Neurosci Bull 2017; 33:711-721. [PMID: 29196874 DOI: 10.1007/s12264-017-0195-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 11/08/2017] [Indexed: 01/02/2023] Open
Abstract
Voltage-dependent anion channel 1 (VDAC1) is thought to contribute to the progression of tumor development. However, whether VDAC1 contributes to bone cancer pain remains unknown. In this study, we found that the expression of VDAC1 was upregulated in the L2-5 segments of the spinal dorsal horn at 2 and 3 weeks after injection of tumor cells into the tibial cavity. Intrathecal injection of a VDAC1 inhibitor significantly reversed the pain hypersensitivity and reduced the over-expression of Toll-like receptor 4 (TLR4). Intrathecal injection of minocycline, an inhibitor of microglia, also attenuated the pain hypersensitivity of rat models of bone cancer pain. These results suggest that VDAC1 plays a significant role in the development of complicated cancer pain, possibly by regulating the expression of TLR4.
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Affiliation(s)
- Xiangpeng Kong
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psychiatric Diseases and Institute of Neuroscience, The Second Affiliated Hospital, Soochow University, Suzhou, 215123, China
| | - Jinrong Wei
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psychiatric Diseases and Institute of Neuroscience, The Second Affiliated Hospital, Soochow University, Suzhou, 215123, China
| | - Diyu Wang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psychiatric Diseases and Institute of Neuroscience, The Second Affiliated Hospital, Soochow University, Suzhou, 215123, China
| | - Xiaoju Zhu
- Center for Translational Medicine, Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, 215600, China
| | - Youlang Zhou
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psychiatric Diseases and Institute of Neuroscience, The Second Affiliated Hospital, Soochow University, Suzhou, 215123, China
| | - Shusheng Wang
- Center for Translational Medicine, Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, 215600, China
| | - Guang-Yin Xu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psychiatric Diseases and Institute of Neuroscience, The Second Affiliated Hospital, Soochow University, Suzhou, 215123, China.
- Center for Translational Medicine, Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang, 215600, China.
| | - Guo-Qin Jiang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psychiatric Diseases and Institute of Neuroscience, The Second Affiliated Hospital, Soochow University, Suzhou, 215123, China.
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Majuta LA, Guedon JMG, Mitchell SAT, Ossipov MH, Mantyh PW. Anti-nerve growth factor therapy increases spontaneous day/night activity in mice with orthopedic surgery-induced pain. Pain 2017; 158:605-617. [PMID: 28301858 PMCID: PMC5370196 DOI: 10.1097/j.pain.0000000000000799] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Total knee arthroplasty (TKA) and total hip arthroplasty (THA) are 2 of the most common and successful surgical interventions to relieve osteoarthritis pain. Control of postoperative pain is critical for patients to fully participate in the required physical therapy which is the most influential factor in effective postoperative knee rehabilitation. Currently, opiates are a mainstay for managing postoperative orthopedic surgery pain including TKA or THA pain. Recently, issues including efficacy, dependence, overdose, and death from opiates have made clinicians and researchers more critical of use of opioids for treating nonmalignant skeletal pain. In the present report, a nonopiate therapy using a monoclonal antibody raised against nerve growth factor (anti-NGF) was assessed for its ability to increase the spontaneous activity of the operated knee joint in a mouse model of orthopedic surgery pain-induced by drilling and coring the trochlear groove of the mouse femur. Horizontal activity and velocity and vertical rearing were continually assessed over a 20 hours day/night period using automated activity boxes in an effort to reduce observer bias and capture night activity when the mice are most active. At days 1 and 3, after orthopedic surgery, there was a marked reduction in spontaneous activity and vertical rearing; anti-NGF significantly attenuated this decline. The present data suggest that anti-NGF improves limb use in a rodent model of joint/orthopedic surgery and as such anti-NGF may be useful in controlling pain after orthopedic surgeries such as TKA or THA.
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Affiliation(s)
- Lisa A. Majuta
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724
| | | | | | | | - Patrick W. Mantyh
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724
- Cancer Center, University of Arizona, Tucson, AZ 85724
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Shenoy PA, Kuo A, Vetter I, Smith MT. The Walker 256 Breast Cancer Cell- Induced Bone Pain Model in Rats. Front Pharmacol 2016; 7:286. [PMID: 27630567 PMCID: PMC5005431 DOI: 10.3389/fphar.2016.00286] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 08/18/2016] [Indexed: 12/19/2022] Open
Abstract
The majority of patients with terminal breast cancer show signs of bone metastasis, the most common cause of pain in cancer. Clinically available drug treatment options for the relief of cancer-associated bone pain are limited due to either inadequate pain relief and/or dose-limiting side-effects. One of the major hurdles in understanding the mechanism by which breast cancer causes pain after metastasis to the bones is the lack of suitable preclinical models. Until the late twentieth century, all animal models of cancer induced bone pain involved systemic injection of cancer cells into animals, which caused severe deterioration of animal health due to widespread metastasis. In this mini-review we have discussed details of a recently developed and highly efficient preclinical model of breast cancer induced bone pain: Walker 256 cancer cell- induced bone pain in rats. The model involves direct localized injection of cancer cells into a single tibia in rats, which avoids widespread metastasis of cancer cells and hence animals maintain good health throughout the experimental period. This model closely mimics the human pathophysiology of breast cancer induced bone pain and has great potential to aid in the process of drug discovery for treating this intractable pain condition.
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Affiliation(s)
- Priyank A Shenoy
- School of Biomedical Sciences, The University of QueenslandBrisbane, QLD, Australia; Centre for Integrated Preclinical Drug Development, The University of QueenslandBrisbane, QLD, Australia
| | - Andy Kuo
- Centre for Integrated Preclinical Drug Development, The University of Queensland Brisbane, QLD, Australia
| | - Irina Vetter
- Institute for Molecular Bioscience, The University of QueenslandBrisbane, QLD, Australia; School of Pharmacy, The University of QueenslandBrisbane, QLD, Australia
| | - Maree T Smith
- Centre for Integrated Preclinical Drug Development, The University of QueenslandBrisbane, QLD, Australia; School of Pharmacy, The University of QueenslandBrisbane, QLD, Australia
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