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Cıcek E, Demırel B, Cıcek IE, Kıraç AS, Eren I. Increased Neutrophil-lymphocyte and Platelet-lymphocyte Ratios in Male Heroin Addicts: A Prospective Controlled Study. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2018; 16:190-196. [PMID: 29739133 PMCID: PMC5953019 DOI: 10.9758/cpn.2018.16.2.190] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 05/29/2017] [Accepted: 07/03/2017] [Indexed: 12/28/2022]
Abstract
Objective The neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) are markers that can determine the presence of systemic inflammatory response. In this study, we examined the NLR and PLR levels in patients with heroin dependence compared to healthy controls. Methods The study sample included 90 male patients with heroin dependence aged 18 to 45 years and 60 healthy subjects who had similar socio-demographic characteristics as the patient group. The diagnoses of heroin dependence and other Axis I psychiatric disorders in the patient and control groups were screened with the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (SCID-I). The extent of heroin addiction was assessed with the Addiction Severity Index (ASI). Results The mean NLR and PLR levels of patients with heroin dependence were significantly higher than the control subjects (p=0.031 and p<0.001, respectively). Positive correlations were found between NLR, PLR and duration of the disorder. Conclusion Our results indicate that inflammatory processes may play a role in the pathophysiology of heroin dependence.
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Affiliation(s)
- Erdinc Cıcek
- Department of Psychiatry, Çumra State Hospital, Konya, Turkey
| | - Başak Demırel
- Department of Psychiatry, Research and Training Hospital, Konya, Turkey
| | - Ismet Esra Cıcek
- Department of Psychiatry, Research and Training Hospital, Konya, Turkey
| | - Aslı Seda Kıraç
- Department of Psychiatry, Research and Training Hospital, Konya, Turkey
| | - Ibrahim Eren
- Department of Psychiatry, Research and Training Hospital, Konya, Turkey
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Up-regulation of μ-, δ- and κ-opioid receptors in concanavalin A-stimulated rat spleen lymphocytes. J Neuroimmunol 2018; 321:12-23. [PMID: 29957382 DOI: 10.1016/j.jneuroim.2018.05.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 05/04/2018] [Accepted: 05/17/2018] [Indexed: 12/12/2022]
Abstract
Regulation of μ-, δ- and κ-opioid receptor protein level in spleen lymphocytes when stimulated by mitogen is not known. To answer the question whether these cells do express opioid receptor (OR) proteins, primary, fresh rat spleen lymphocytes were prepared and stimulated for 48 h with mitogenic dose of Con A. The unstimulated lymphocytes did not express μ- and δ-OR proteins in detectable amounts, however, stimulation with Con A resulted in appearance of clearly detectable immunoblot signals of both μ-OR and δ-OR. κ-OR were detected already in primary cells and increased 2.4-fold in Con A-stimulated cells. These results were supported by data obtained by flow cytometry analysis indicating a dramatic increase in number of μ-, δ- and κ-OR expressing cells after mitogen stimulation. The newly synthesized μ-, δ- and κ-OR in Con A-stimulated spleen lymphocytes were present in the cells interior and not functionally mature, at least in terms of their ability to enhance activity of trimeric G proteins determined by three different protocols of agonist-stimulated, high-affinity [35S]GTPγS binding assay. The up-regulation of μ-, δ- and κ-OR was associated with specific decrease of their cognate trimeric G proteins, Gi1α/Gi2α; the other Gα and Gβ subunits were unchanged. The level of β-arrestin-1/2 was also decreased in Con A-stimulated splenocytes. We conclude that up-regulation of OR expression level in spleen lymphocytes by Con A proceeds in conjunction with down-regulation of their intracellular signaling partners, Gi1α/Gi2α proteins and β-arrestin-1/2. These regulatory proteins are expressed in high amounts already in unstimulated cells and decreased by mitogen stimulation.
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Ghaderi A, Banafshe HR, Motmaen M, Rasouli-Azad M, Bahmani F, Asemi Z. Clinical trial of the effects of vitamin D supplementation on psychological symptoms and metabolic profiles in maintenance methadone treatment patients. Prog Neuropsychopharmacol Biol Psychiatry 2017. [PMID: 28642082 DOI: 10.1016/j.pnpbp.2017.06.016] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Vitamin D deficiency may be associated with some complications including nonspecific musculoskeletal pain and periodontal disease in maintenance methadone treatment (MMT) patients. This study was designed to determine the effect of vitamin D supplementation on psychological symptoms and metabolic profiles in MMT patients. METHODS This randomized, double-blind, placebo-controlled, clinical trial was carried out among 68 MMT patients. Participants were randomly allocated to receive either 50,000IU vitamin D supplements (n=34) or placebo (n=34) every 2weeks for 12weeks. Fasting blood samples were taken at baseline and post-intervention to evaluate relevant variables. RESULTS After the 12-week intervention, serum 25(OH) vitamin D levels significantly increased in the intervention group compared with the placebo group (+8.1±4.9 vs. -0.4±3.0, P<0.001). In addition, vitamin D supplementation significantly improved Pittsburgh Sleep Quality Index (-1.5±2.2 vs. -0.2±2.3, P=0.02) and Beck Depression Inventory (-4.8±7.3 vs. -1.5±6.1, P=0.04) compared with the placebo. Patients who received vitamin D supplements had significantly decreased fasting plasma glucose (-7.5±10.6 vs. +0.3±10.7mg/dL, P=0.004), serum insulin levels (-3.6±5.3 vs. -0.9±3.5 μIU/mL, P=0.01), homeostasis model of assessment-insulin resistance (-1.0±1.3 vs. -0.2±0.7, P=0.003), serum triglycerides (-9.6±30.8 vs. +15.6±30.2mg/dL, P=0.001), total- (-8.7±20.9 vs. +11.0±27.4mg/dL, P=0.001) and LDL-cholesterol (-11.1±17.9 vs. +5.9±27.5mg/dL, P=0.004) compared with the placebo. Additionally, vitamin D intake resulted in a significant decrease in serum high sensitivity C-reactive protein (-2.2±4.2 vs. +2.0±3.7mg/L, P<0.001), and significant increases plasma total antioxidant capacity (+26.2±99.8 vs. -86.3±127.5mmol/L, P<0.001) and glutathione levels (+292.3±172.4 vs. +48.9±208.9μmol/L, P<0.001) compared with the placebo. There was no significant effect of vitamin D supplementation on serum HDL-cholesterol, and other markers of insulin metabolism, inflammation and oxidative stress. CONCLUSIONS Totally, taking 50,000IU vitamin D supplement every 2weeks for 12weeks in MMT patients had beneficial effects on psychological symptoms and few metabolic profiles.
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Affiliation(s)
- Amir Ghaderi
- Department of Addiction studies, School of Medical, kashan University of Medical Sciences, kashan, Iran
| | - Hamid Reza Banafshe
- Department of Addiction studies, School of Medical, kashan University of Medical Sciences, kashan, Iran; Department of Pharmacology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Maryam Motmaen
- Department of Psychiatry, School of Medicine, Kashan University of Medical Science, Kashan, Iran
| | - Morad Rasouli-Azad
- Department of clinical psychology, School of Medicine, Kashan University of Medical Science, Kashan, Iran; Substance Abuse and Dependence Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Fereshteh Bahmani
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, I.R., Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, I.R., Iran.
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Kuo HW, Shih CL, Tsung JH, Liu SW, Chu SK, Yang HC, Tsou HH, Wang ZH, Chen ACH, Liu YL. Pharmacogenomics study on cadherin 2 network with regard to HIV infection and methadone treatment outcome. PLoS One 2017; 12:e0174647. [PMID: 28358908 PMCID: PMC5373543 DOI: 10.1371/journal.pone.0174647] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 03/13/2017] [Indexed: 12/17/2022] Open
Abstract
Heroin dependent patients have a high incidence of HIV infection. In contrast to the gene expression method, we developed a systemic correlation analysis method built upon the results of pharmacogenomics study in a methadone maintenance treatment (MMT) cohort consisting of 344 Taiwanese heroin dependent patients. We identified genetic variants and their encoding proteins that may be involved with HIV infection and MMT treatment outcome. Cadherin 2 (CDH2) genetic determinants were identified through the genome-wide pharmacogenomic study. We found significant correlations among HIV infection status, plasma levels of CDH2, cytokine IL-7, ADAM10, and the treatment responses to methadone. Two single nucleotide polymorphisms located within CDH2 gene showed associations with blood pressure and plasma CDH2 concentration. Plasma concentration of CDH2 showed correlations with the level of cytokine IL-7, status of HIV infection, and urine morphine test result. Plasma level of IL-7 was correlated with corrected QT interval (QTc) and gooseflesh skin withdrawal symptom score, while level of ADAM10 was correlated with plasma concentrations of vitamin D metabolite, nicotine metabolite, and R-methadone. The results suggest a novel network involving HIV infection and methadone treatment outcome.
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Affiliation(s)
- Hsiang-Wei Kuo
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli, Taiwan
| | - Chia-Lung Shih
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli, Taiwan
| | - Jieh-Hen Tsung
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli, Taiwan
| | - Sheng-Wen Liu
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli, Taiwan
| | - Shih-Kai Chu
- Institute of Statistical Science, Academia Sinica, Taipei, Taiwan
| | - Hsin-Chou Yang
- Institute of Statistical Science, Academia Sinica, Taipei, Taiwan
| | - Hsiao-Hui Tsou
- Division of Biostatistics and Bioinformatics, Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan
- Graduate Institute of Biostatistics, College of Public Health, China Medical University, Taichung, Taiwan
| | - Zih-Hsiang Wang
- Department of Psychology, National Taiwan University, Taipei, Taiwan
| | - Andrew C. H. Chen
- Department of Psychiatry, The Zucker Hillside Hospital, Northwell Health, Glen Oaks, New York, United States of America
- The Feinstein Institute for Medical Research, Hofstra Northwell School of Medicine at Hofstra University, Manhasset, New York, United States of America
| | - Yu-Li Liu
- Center for Neuropsychiatric Research, National Health Research Institutes, Miaoli, Taiwan
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
- * E-mail:
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Shi J, Feng Y, Gao L, Feng D, Yao T, Shi S, Zhang Y, Liang X, Wang S. Immunogenicity and safety of a high-dose hepatitis B vaccine among patients receiving methadone maintenance treatment: A randomized, double-blinded, parallel-controlled trial. Vaccine 2017; 35:2443-2448. [PMID: 28343774 DOI: 10.1016/j.vaccine.2017.03.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 03/10/2017] [Accepted: 03/10/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS To explore whether the immunization with high-dose (60μg) hepatitis B vaccines in patients receiving methadone maintenance treatment (MMT) could yield a superior protection against hepatitis B infection than did the standard dose (20μg). METHODS We conducted a randomized, double-blinded, parallel-controlled trial in MMT patients. Patients with serologically negative hepatitis B surface antigen (HBsAg) and hepatitis B surface antibody (anti-HBs) were randomized in a ratio of 1:1 to receive three intramuscular injections of 20μg or 60μg recombinant hepatitis B vaccine at months 0, 1, and 6. Serum HBsAg and anti-HBs were measured at months 7 and 12 post-vaccination to assess the immunogenicity. RESULTS A total of 196 MMT patients were randomized and 195 received at least one injection (98 and 97 in 20 and 60μg vaccine groups, respectively). The 60μg vaccine group showed a seroconversion of anti-HBs of 87.3%, high-level response rate of 56.3%, and GMC of 742.9mIU/mL at month 7. While these results were numerically higher than the 20μg group, a statistical difference was not found. HIV infection and concomitant drug abuse were negatively associated with the robust immune responses. 7.7% of MMT patients receiving at least one dose of vaccine reported solicited adverse reactions within 7days after vaccination, 2.6% reported unsolicited adverse reactions within 28days after vaccination. None of the MMT patients reported serious adverse events or became HBsAg positive during the follow-up. CONCLUSIONS The three-dose regimen of 60μg recombinant hepatitis B vaccine at months 0, 1, and 6 can yield a similar immunogenicity among MMT patients as compared to the 20μg vaccine. ClinicalTrials.gov identifier: NCT02991599.
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Affiliation(s)
- Jing Shi
- School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Yongliang Feng
- School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Linying Gao
- School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Dan Feng
- School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Tian Yao
- School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Shan Shi
- Methadone Maintenance Treatment Clinic, Nanning Red Cross Hospital, Nanning, Guangxi, China
| | - Yawei Zhang
- Yale School of Medicine, New Haven 06510, CT, USA
| | - Xiaofeng Liang
- Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Suping Wang
- School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China.
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Sunil M, Nigalye M, Somasunderam A, Martinez ML, Yu X, Arduino RC, Utay NS, Bell TK. Unchanged Levels of Soluble CD14 and IL-6 Over Time Predict Serious Non-AIDS Events in HIV-1-Infected People. AIDS Res Hum Retroviruses 2016; 32:1205-1209. [PMID: 27344921 DOI: 10.1089/aid.2016.0007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
HIV-1-infected persons have increased risk of serious non-AIDS events (SNAEs) despite suppressive antiretroviral therapy. Increased circulating levels of soluble CD14 (sCD14), soluble CD163 (sCD163), and interleukin-6 (IL-6) at a single time point have been associated with SNAEs. However, whether changes in these biomarker levels predict SNAEs in HIV-1-infected persons is unknown. We hypothesized that greater decreases in inflammatory biomarkers would be associated with fewer SNAEs. We identified 39 patients with SNAEs, including major cardiovascular events, end stage renal disease, decompensated cirrhosis, non-AIDS-defining malignancies, and death of unknown cause, and age- and sex-matched HIV-1-infected controls. sCD14, sCD163, and IL-6 were measured at study enrollment (T1) and proximal to the event (T2) or equivalent duration in matched controls. Over ∼34 months, unchanged rather than decreasing levels of sCD14 and IL-6 predicted SNAEs. Older age and current illicit substance abuse, but not HCV coinfection, were associated with SNAEs. In a multivariate analysis, older age, illicit substance use, and unchanged IL-6 levels remained significantly associated with SNAEs. Thus, the trajectories of sCD14 and IL-6 levels predict SNAEs. Interventions to decrease illicit substance use may decrease the risk of SNAEs in HIV-1-infected persons.
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Affiliation(s)
- Meena Sunil
- Division of Infectious Diseases, Department of Internal Medicine, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth), Houston, Texas
| | - Maitreyee Nigalye
- Division of Infectious Diseases, Department of Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Anoma Somasunderam
- Division of Infectious Diseases, Department of Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Maria Laura Martinez
- Division of Infectious Diseases, Department of Internal Medicine, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth), Houston, Texas
| | - Xiaoying Yu
- Center for AIDS Research, Design and Analysis Core, Baylor College of Medicine, Houston, Texas
| | - Roberto C. Arduino
- Division of Infectious Diseases, Department of Internal Medicine, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth), Houston, Texas
| | - Netanya S. Utay
- Division of Infectious Diseases, Department of Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Tanvir K. Bell
- Division of Infectious Diseases, Department of Internal Medicine, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth), Houston, Texas
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Piepenbrink MS, Samuel M, Zheng B, Carter B, Fucile C, Bunce C, Kiebala M, Khan AA, Thakar J, Maggirwar SB, Morse D, Rosenberg AF, Haughey NJ, Valenti W, Keefer MC, Kobie JJ. Humoral Dysregulation Associated with Increased Systemic Inflammation among Injection Heroin Users. PLoS One 2016; 11:e0158641. [PMID: 27379802 PMCID: PMC4933366 DOI: 10.1371/journal.pone.0158641] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 06/20/2016] [Indexed: 02/06/2023] Open
Abstract
Background Injection drug use is a growing major public health concern. Injection drug users (IDUs) have a higher incidence of co-morbidities including HIV, Hepatitis, and other infections. An effective humoral response is critical for optimal homeostasis and protection from infection; however, the impact of injection heroin use on humoral immunity is poorly understood. We hypothesized that IDUs have altered B cell and antibody profiles. Methods and Findings A comprehensive systems biology-based cross-sectional assessment of 130 peripheral blood B cell flow cytometry- and plasma- based features was performed on HIV-/Hepatitis C-, active heroin IDUs who participated in a syringe exchange program (n = 19) and healthy control subjects (n = 19). The IDU group had substantial polydrug use, with 89% reporting cocaine injection within the preceding month. IDUs exhibited a significant, 2-fold increase in total B cells compared to healthy subjects, which was associated with increased activated B cell subsets. Although plasma total IgG titers were similar between groups, IDUs had significantly higher IgG3 and IgG4, suggestive of chronic B cell activation. Total IgM was also increased in IDUs, as well as HIV Envelope-specific IgM, suggestive of increased HIV exposure. IDUs exhibited numerous features suggestive of systemic inflammation, including significantly increased plasma sCD40L, TNF-α, TGF-α, IL-8, and ceramide metabolites. Machine learning multivariate analysis distilled a set of 10 features that classified samples based on group with absolute accuracy. Conclusions These results demonstrate broad alterations in the steady-state humoral profile of IDUs that are associated with increased systemic inflammation. Such dysregulation may impact the ability of IDUs to generate optimal responses to vaccination and infection, or lead to increased risk for inflammation-related co-morbidities, and should be considered when developing immune-based interventions for this growing population.
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Affiliation(s)
- Michael S. Piepenbrink
- Infectious Diseases Division, Department of Medicine, University of Rochester, Rochester, NY, United States of America
| | - Memorie Samuel
- School of Medicine, Howard University, Washington, DC, United States of America
| | - Bo Zheng
- Infectious Diseases Division, Department of Medicine, University of Rochester, Rochester, NY, United States of America
| | - Brittany Carter
- School of Medicine, Texas A&M University, Bryan, TX, United States of America
| | - Christopher Fucile
- Division of Allergy, Immunology, and Rheumatology, Department of Medicine, University of Rochester, Rochester, NY, United States of America
| | - Catherine Bunce
- Infectious Diseases Division, Department of Medicine, University of Rochester, Rochester, NY, United States of America
| | - Michelle Kiebala
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY, United States of America
| | - Atif A. Khan
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY, United States of America
| | - Juilee Thakar
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY, United States of America
| | - Sanjay B. Maggirwar
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY, United States of America
| | - Diane Morse
- Departments of Psychiatry and Medicine, University of Rochester, Rochester, NY, United States of America
| | - Alexander F. Rosenberg
- Division of Allergy, Immunology, and Rheumatology, Department of Medicine, University of Rochester, Rochester, NY, United States of America
| | - Norman J. Haughey
- Department of Neurology, Johns Hopkins University, Baltimore, MD, United States of America
| | - William Valenti
- Infectious Diseases Division, Department of Medicine, University of Rochester, Rochester, NY, United States of America
- Trillium Health, Rochester, NY, United States of America
| | - Michael C. Keefer
- Infectious Diseases Division, Department of Medicine, University of Rochester, Rochester, NY, United States of America
| | - James J. Kobie
- Infectious Diseases Division, Department of Medicine, University of Rochester, Rochester, NY, United States of America
- * E-mail:
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Liang X, Liu R, Chen C, Ji F, Li T. Opioid System Modulates the Immune Function: A Review. TRANSLATIONAL PERIOPERATIVE AND PAIN MEDICINE 2016; 1:5-13. [PMID: 26985446 PMCID: PMC4790459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Opioid receptors and their ligands produce powerful analgesia that is effective in perioperative period and chronic pain managements accompanied with various side effects including respiratory depression, constipation and addiction etc. Opioids can also interfere with the immune system, not only participating in the function of the immune cells, but also modulating innate and acquired immune responses. The traditional notion of opioids is immunosuppressive. Recent studies indicate that the role of opioid receptors on immune function is complicated, working through various different mechanisms. Different opioids or opioids administrations show various effects on the immune system: immunosuppressive, immunostimulatory, or dual effect. It is important to elucidate the relationship between opioids and immune function, since immune system plays critical role in various physiological and pathophysiological processes, including the inflammation, tumor growth and metastasis, drug abuse, and so on. This review article tends to have an overview of the recent work and perspectives on opioids and the immune function.
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Affiliation(s)
- Xuan Liang
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania,Department of Anesthesiology, Tongren Hospital, Capital Medical University
| | - Renyu Liu
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania
| | - Chunhua Chen
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania
| | - Fang Ji
- Department of Anesthesiology, Tongren Hospital, Capital Medical University
| | - Tianzuo Li
- Shijitan Hospital, Capital Medical University
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