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MicroRNA and chronic pain

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https://www.readbyqxmd.com/read/29447138/inflammation-in-the-pathophysiology-of-neuropathic-pain
#1
Claudia Sommer, Mathias Leinders, Nurcan Üçeyler
Peripheral nerve injuries and diseases often lead to pain persisting beyond the resolution of damage, indicating an active disease-promoting process, which may result in chronic pain. This is regarded as a maladaptive mechanism resulting from neuroinflammation that originally serves to promote regeneration and healing. Knowledge on these physiological and pathophysiological processes has accumulated over the last few decades and has started to yield potential therapeutic targets. Key players are macrophages, T-lymphocytes, cytokines, and chemokines...
March 2018: Pain
https://www.readbyqxmd.com/read/29385395/mirna-expression-pattern-differs-depending-on-endometriosis-lesion-type
#2
M E Haikalis, J M Wessels, N A Leyland, S K Agarwal, W G Foster
MicroRNA (miRNA), non-coding segments of RNA involved in post-transcriptional regulation of protein expression, are differentially expressed in eutopic endometrium of women with and without endometriosis compared to endometriotic lesions. However, endometriotic lesion types are known to be biochemically distinct and therefore hypothesized that miRNAs are differentially expressed in endometriomas compared to peritoneal and deep-infiltrating lesions. Therefore endometrial biopsies and ectopic implants from women (n = 38) undergoing laparoscopic surgery for chronic pelvic pain were collected...
January 29, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29323698/xist-accelerates-neuropathic-pain-progression-through-regulation-of-mir-150-and-zeb1-in-cci-rat-models
#3
Xue-Tao Yan, Jing-Min Lu, Yu Wang, Xiao-Li Cheng, Xiang-Hu He, Wen-Zhong Zheng, Hu Chen, Yan-Lin Wang
LncRNAs are reported to participate in neuropathic pain development. LncRNA X-inactive specific transcript (XIST) is involved in the progression of various cancers. However, the role of XIST in neuropathic pain remains unclear. In our present study, we established a chronic constriction injury (CCI) rat model and XIST was found to be greatly upregulated both in the spinal cord tissues and in the isolated microglias of CCI rats. Inhibition of XIST inhibited neuropathic pain behaviors including mechanical and thermal hyperalgesia...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29214166/mirnas-important-targets-for-oral-cancer-pain-research
#4
REVIEW
Cláudia Maria Pereira, Dayany Sehnem, Estevão Oliveira da Fonseca, Heráclito Fernando Gurgel Barboza, Antônio Carlos Pires de Carvalho, Alexandre F M DaSilva, Vivaldo Moura-Neto, Marcos F DosSantos
Pain is a symptom shared by an incredible number of diseases. It is also one of the primary conditions that prompt individuals to seek medical treatment. Head and neck squamous cell carcinoma (HNSCC) corresponds to a heterogeneous disease that may arise from many distinct structures of a large, highly complex, and intricate region. HNSCC affects a great number of patients worldwide and is directly associated with chronic pain, which is especially prominent during the advanced stages of oral squamous cell carcinoma (OSCC), an anatomical and clinical subtype that corresponds to the great majority oral cancers...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29150958/inhibition-of-mir-200b-mir-429-contributes-to-neuropathic-pain-development-through-targeting-zinc-finger-e-box-binding-protein-1
#5
Xue-Tao Yan, Ying Zhao, Xiao-Li Cheng, Xiang-Hu He, Yu Wang, Wen-Zhong Zheng, Hu Chen, Yan-Lin Wang
Many studies have reported that microRNAs participate in neuropathic pain development. Previously, miR-200b and miR-429 are reported to be involved in various diseases. In our current study, we focused on their roles in neuropathic pain and we found that miR-200b and miR-429 were significantly decreased in chronic constriction injury (CCI) rat spinal cords and isolated microglials. miR-200b and miR-429 overexpression were able to relieve neuropathic pain through modulating PWT and PWL in CCI rats. Meanwhile, we observed that both miR-200b and miR-429 upregulation could repress neuroinflammation via inhibiting inflammatory cytokines such as IL-6, IL-1β and TNF-α in CCI rats...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29127316/exercise-induced-changes-in-cerebrospinal-fluid-mirnas-in-gulf-war-illness-chronic-fatigue-syndrome-and-sedentary-control-subjects
#6
James N Baraniuk, Narayan Shivapurkar
Gulf War Illness (GWI) and Chronic Fatigue Syndrome (CFS) have similar profiles of pain, fatigue, cognitive dysfunction and exertional exhaustion. Post-exertional malaise suggests exercise alters central nervous system functions. Lumbar punctures were performed in GWI, CFS and control subjects after (i) overnight rest (nonexercise) or (ii) submaximal bicycle exercise. Exercise induced postural tachycardia in one third of GWI subjects (Stress Test Activated Reversible Tachycardia, START). The remainder were Stress Test Originated Phantom Perception (STOPP) subjects...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28986538/circulating-micrornas-a-novel-potential-biomarker-for-diagnosing-acute-aortic-dissection
#7
Jian Dong, Junmin Bao, Rui Feng, Zhiqing Zhao, Qingsheng Lu, Guokun Wang, Haiyan Li, Dingfeng Su, Jian Zhou, Qing Jing, Zaiping Jing
Acute aortic dissection (AAD) is a catastrophic emergency with high mortality and misdiagnosis rate. We aimed to determine whether circulating microRNAs allow to distinguish AAD from healthy controls and chest pain patients without AAD (CP). Plasma microRNAs expression were determined in 103 participants, including 37 AAD patients, 26 chronic aortic dissection patients, 17 healthy volunteers, 23 patients without AAD. We selected 16 microRNAs from microarray screening as candidates for further testing via qRT-PCR...
October 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28761373/chronic-constriction-injury-of-sciatic-nerve-changes-circular-rna-expression-in-rat-spinal-dorsal-horn
#8
Song Cao, Wenwen Deng, Ying Li, Bangyong Qin, Lin Zhang, Shouyang Yu, Peng Xie, Zhi Xiao, Tian Yu
BACKGROUND: Mechanisms of neuropathic pain are still largely unknown. Molecular changes in spinal dorsal horn may contribute to the initiation and development of neuropathic pain. Circular RNAs (circRNAs) have been identified as microRNA sponges and involved in various biological processes, but whether their expression profile changes in neuropathic pain condition is not reported. METHODS: To test whether neuropathic pain influences circRNA expression, we developed a sciatic chronic constriction injury (CCI) model in rats...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28685867/mir-150-alleviates-neuropathic-pain-via-inhibiting-toll-like-receptor-5
#9
Li-Juan Ji, Jing Shi, Jing-Min Lu, Qiang-Min Huang
MicroRNAs (miRNAs) are reported as vital participators in the pathophysiological course of neuropathic pain. However, the underlying mechanisms of the functional roles of miRNAs in neuropathic pain are largely unknown. This study was designed to explore the potential role of miR-150 in regulating the process of neuropathic pain in a rat model established by chronic sciatic nerve injury (CCI). Overexpression of miR-150 greatly alleviated neuropathic pain development and reduced inflammatory cytokine expression, including COX-2, interleukin IL-6, and tumor necrosis factor (TNF)-α in CCI rats...
July 7, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28677679/microrna-cluster-mir-17-92-regulates-multiple-functionally-related-voltage-gated-potassium-channels-in-chronic-neuropathic-pain
#10
Atsushi Sakai, Fumihito Saitow, Motoyo Maruyama, Noriko Miyake, Koichi Miyake, Takashi Shimada, Takashi Okada, Hidenori Suzuki
miR-17-92 is a microRNA cluster with six distinct members. Here, we show that the miR-17-92 cluster and its individual members modulate chronic neuropathic pain. All cluster members are persistently upregulated in primary sensory neurons after nerve injury. Overexpression of miR-18a, miR-19a, miR-19b and miR-92a cluster members elicits mechanical allodynia in rats, while their blockade alleviates mechanical allodynia in a rat model of neuropathic pain. Plausible targets for the miR-17-92 cluster include genes encoding numerous voltage-gated potassium channels and their modulatory subunits...
July 5, 2017: Nature Communications
https://www.readbyqxmd.com/read/28614186/mir-34c-5p-functions-as-pronociceptive-microrna-in-cancer-pain-by-targeting-cav2-3-containing-calcium-channels
#11
Jagadeesh Gandla, Santosh Kumar Lomada, Jianning Lu, Rohini Kuner, Kiran Kumar Bali
Pathophysiological mechanisms underlying pain associated with cancer are poorly understood. microRNAs (miRNAs) are a class of noncoding RNAs with emerging functional importance in chronic pain. In a genome-wide screen for miRNAs regulated in dorsal root ganglia (DRG) neurons in a mouse model of bone metastatic pain, we identified miR-34c-5p as a functionally important pronociceptive miRNA. Despite these functional insights and therapeutic potential for miR-34c-5p, its molecular mechanism of action in peripheral sensory neurons remains unknown...
September 2017: Pain
https://www.readbyqxmd.com/read/28603428/upregulation-of-mir-375-level-ameliorates-morphine-analgesic-tolerance-in-mouse-dorsal-root-ganglia-by-inhibiting-the-jak2-stat3-pathway
#12
Haiqin Li, Rong Tao, Jing Wang, Lingjie Xia
Several lines of evidence indicate that microRNAs (miRNAs) modulate tolerance to the analgesic effects of morphine via regulation of pain-related genes, making dysregulation of miRNA levels a clinical target for controlling opioid tolerance. However, the precise mechanisms by which miRNAs regulate opioid tolerance are unclear. In the present study, we noted that the miR-375 level was downregulated but the expression of Janus kinase 2 (JAK2) was upregulated in mouse dorsal root ganglia (DRG) following chronic morphine treatment...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28580822/effects-of-microrna-223-on-morphine-analgesic-tolerance-by-targeting-nlrp3-in-a-rat-model-of-neuropathic-pain
#13
Xiao-Juan Xie, Li-Gang Ma, Kai Xi, Dong-Mei Fan, Jian-Guo Li, Quan Zhang, Wei Zhang
Objective To investigate the effects of microRNA-223 on morphine analgesic tolerance by targeting NLRP3 in a rat model of neuropathic pain. Methods Our study selected 100 clean grade healthy Sprague-Dawley adult male rats weighing 200 to 250 g. After establishment of a rat model of chronic constriction injury, these rats were divided into 10 groups (10 rats in each group): the normal control, sham operation, chronic constriction injury, normal saline, morphine, miR-223, NLRP3, miR-223 + morphine, NLRP3 + morphine, and miR-223 + NLRP3 + morphine groups...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28579386/microrna-and-chronic-pain-from-mechanisms-to-therapeutic-potential
#14
REVIEW
María José López-González, Marc Landry, Alexandre Favereaux
Chronic pain is a major public health issue with an incidence of 20-25% worldwide that can take different forms like neuropathic, cancer-related or inflammatory pain. Chronic pain often limits patients in their daily activities leading to despair. Thus, the goal of treatments is to relieve pain sufficiently to enable patients to go back to a normal life. Unfortunately, few patients with chronic pain obtain complete relief from the analgesics that are currently available. It is thus of prime importance to get a better understanding of chronic pain mechanisms to design new therapeutic strategies and pain-killers...
June 1, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28572455/mir-183-cluster-scales-mechanical-pain-sensitivity-by-regulating-basal-and-neuropathic-pain-genes
#15
Changgeng Peng, Lili Li, Ming-Dong Zhang, Carolina Bengtsson Gonzales, Marc Parisien, Inna Belfer, Dmitry Usoskin, Hind Abdo, Alessandro Furlan, Martin Häring, Francois Lallemend, Tibor Harkany, Luda Diatchenko, Tomas Hökfelt, Jens Hjerling-Leffler, Patrik Ernfors
Nociception is protective and prevents tissue damage but can also facilitate chronic pain. Whether a general principle governs these two types of pain is unknown. Here, we show that both basal mechanical and neuropathic pain are controlled by the microRNA-183 (miR-183) cluster in mice. This single cluster controls more than 80% of neuropathic pain-regulated genes and scales basal mechanical sensitivity and mechanical allodynia by regulating auxiliary voltage-gated calcium channel subunits α2δ-1 and α2δ-2...
June 16, 2017: Science
https://www.readbyqxmd.com/read/28548108/drugging-the-pain-epigenome
#16
REVIEW
Ellen Niederberger, Eduard Resch, Michael J Parnham, Gerd Geisslinger
More than 20% of adults worldwide experience different types of chronic pain, which are frequently associated with several comorbidities and a decrease in quality of life. Several approved painkillers are available, but current analgesics are often hampered by insufficient efficacy and/or severe adverse effects. Consequently, novel strategies for safe, highly efficacious treatments are highly desirable, particularly for chronic pain. Epigenetic mechanisms such as DNA methylation, histone modifications and microRNAs (miRNAs) strongly affect the regulation of gene expression, potentially for long periods over years or even generations, and have been associated with pathophysiological pain...
July 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28499250/redox-regulation-of-micrornas-in-endometriosis-associated-pain
#17
Kristeena Ray Wright, Brenda Mitchell, Nalini Santanam
Endometriosis is a chronic, painful condition with unknown etiology. A differential expression of microRNAs in the endometriotic tissues from women with endometriosis with pain compared to those without suggested a plausible role for miRNA or epigenetic mechanisms in the etiology of endometriotic pain. The peritoneal milieu is involved in maintenance of endometriotic lesion and nociception. We recently showed the mechanistic role for oxidized-lipoproteins (ox-LDLs) present in peritoneal fluid (PF) in endometriosis and pain...
August 2017: Redox Biology
https://www.readbyqxmd.com/read/28490276/endometrial-stromal-and-epithelial-cells-exhibit-unique-aberrant-molecular-defects-in-patients-with-endometriosis
#18
Philip C Logan, Pamela Yango, Nam D Tran
CONTEXT: Endometriosis is a chronic inflammatory disease that causes pain and infertility in women of reproductive age. OBJECTIVE: To investigate the pathologic pathways in endometrial stromal and epithelial cells that contribute to the manifestation of endometriosis. DESIGN: In vitro cellular and molecular analyses of isolated eutopic endometrial stromal and epithelial cells. METHODS: Eutopic stromal and epithelial cells from endometriotic and normal patients were isolated by fluorescence-activated cell sorting for paired sibling RNA sequencing and microRNA microarray...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28460630/microrna-223-demonstrated-experimentally-in-exosome-like-vesicles-is-associated-with-decreased-risk-of-persistent-pain-after-lumbar-disc-herniation
#19
Aurora Moen, Daniel Jacobsen, Santosh Phuyal, Anna Legfeldt, Fred Haugen, Cecilie Røe, Johannes Gjerstad
BACKGROUND: Previous findings have demonstrated that lumbar radicular pain after disc herniation may be associated with up-regulation of inflammatory mediators. In the present study we examined the possible role of extracellular microRNAs (miRs) in this process. METHODS: Single unit recordings, isolation of exosome-like vesicles, electron microscopy, nanoparticle tracking analysis, western blot analysis and qPCR were used in rats to demonstrate the effect of nucleus pulposus (NP) applied onto the dorsal nerve roots...
May 1, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28440797/potential-mechanisms-of-microrna-141-3p-to-alleviate-chronic-inflammatory-pain-by-downregulation-of-downstream-target-gene-hmgb1-in-vitro-and-in-vivo-studies
#20
W-S Shen, X-Q Xu, N-N Zhai, Z-S Zhou, J Shao, Y-H Yu
The present study aimed to investigate the potential role of microRNA-141-3p (miR-141-3p) in chronic inflammatory pain (CIP) by targeting the high-mobility group box1 (HMGB1) gene. In the in vitro study, BV2 microglial cells were selected and assigned into blank, lipopolysaccharide (LPS), miR-141-3p mimics, mimics control, miR-141-3p inhibitor, inhibitor control, miR-141-3p mimics+LPS, mimics control+ LPS, miR-141-3p inhibitor+LPS and inhibitor control+LPS groups. Ninety-six rats were randomly divided into 8 groups (12 rats in each group): blank control, model control, negative control (NC), miR-141-3p mimics+ complete Freund's adjuvant (CFA), mimics control+CFA, HMGB1 short hairpin RNA (shRNA)+CFA, HMGB1 NC+CFA and miR-141-3p mimics+HMGB1 shRNA+CFA groups...
June 2017: Gene Therapy
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