کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5813980 | 1556618 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Endomorphin-1 analogues (MELs) penetrate the blood-brain barrier and exhibit good analgesic effects with minimal side effects
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کلمات کلیدی
EM-2s.c.MPEMORi.v.EM-1EmaxERKEC50CCIi.p.i.c.v.WGTintracerebroventricularcAMP - cAMPδ opioid receptor - δ گیرنده اپیوئیدیμ Opioid receptor - μ گیرنده اپیوئیدCyclic adenosine monophosphate - آدنوزین مونوفسفات Cyclicchronic constriction injury - آسیب زدگی مزمنendomorphin-2 - آندومورفین 2Endomorphin - اندومورفینendomorphin-1 - اندومورفین 1Tolerance - تلرانس Maximum possible effect - حداکثر اثر ممکنIntraperitoneally - داخل صفاقیIntravenous - داخل وریدیDOR - دردCNS - دستگاه عصبی مرکزیsubcutaneous - زیر جلدیBBB - سد خونی مغزیBlood–brain barrier - سد خونی مغزیcentral nervous system - سیستم عصبی مرکزیAntinociception - ضد انعقادhalf-maximal effective concentration - غلظت موثر نیمه حداکثرKOR - وقتیExtracellular regulated kinases - کیناز تنظیم شده خارج سلولیκ opioid receptor - گیرنده اپیدمی κConstipation - یبوست
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Endomorphins are endogenous opioid peptides in mammals and display a strong antinociceptive effect after central administration. However, the clinical usage of these peptides is limited because of their diminished analgesic effect following systemic injection and their inability to cross the bloodâbrain barrier. In this study, we characterized the in vivo effects of four novel endomorphin-1 analogues (termed MELs), which previously showed potential as highly potent analgesics with a good pharmacological profile in vitro. The analogues were administered intravenously to several rodent pain models to examine their antinociception and bloodâbrain barrier permeability. The tested peptides, especially MEL1214, showed good analgesic activity and bloodâbrain barrier permeability. Behavioral studies showed dose-dependent analgesic effect after systematic administration of MEL1214 in the tested pain models. Pre-treatment of subcutaneous administration of naloxone methiodide did not affect the antinociception of these peptides. As compared to morphine, MEL1214 was less prone to induce tolerance after consecutive intravenous administration for 5 days. Gastrointestinal transit was evaluated by the isolated colon response and bead expulsion to determine the potential constipation effect. In contrast to morphine, MEL1214 produced no significant constipation effect at an equivalent dose. MEL1214 shows promise as a suitable compound to treat pain with reduced side effects, and exhibits good potential to be further developed as a novel opioid analgesic in pain treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuropharmacology - Volume 97, October 2015, Pages 312-321
Journal: Neuropharmacology - Volume 97, October 2015, Pages 312-321
نویسندگان
Yuan Wang, Xin Liu, Dan Wang, Junxian Yang, Long Zhao, Jing Yu, Rui Wang,