Structural basis for activation of CB1 by an endocannabinoid analog
Abstract Endocannabinoids (eCBs) are endogenous ligands of the cannabinoid receptor 1 (CB1), a G protein-coupled receptor that regulates a number…
Abstract Endocannabinoids (eCBs) are endogenous ligands of the cannabinoid receptor 1 (CB1), a G protein-coupled receptor that regulates a number…
Abstract Cannabis sativa or hemp, defined as <0.3% total tetrahydrocannabinol (THC), is a specialty crop in the United States, of…
Abstract This narrative state-of-the-art review paper describes the progress in the understanding and treatment of Posttraumatic Stress Disorder (PTSD). Over…
Abstract 研究在优化前处理条件及色谱分离的基础上,建立了同时测定巧克力、软糖、糕点、饼干、饮料、白酒等6种典型食品基质中8种大麻素类化合物的超高效液相色谱-串联质谱(UPLC-MS/MS)的测定方法。前处理方法中考察了不同的净化方式,采用增强型脂质去除净化剂(EMR-Lipid)解决了巧克力中复杂油脂及软糖中胶质难以去除的问题;同时净化溶液在氮吹前加入10%丙三醇甲醇溶液,解决了目前文献方法中直接氮吹对回收率影响很大的关键问题。样品以乙腈为提取溶剂,EMR-Lipid为净化剂进行净化,无水硫酸钠除水后,乙腈层加入10%丙三醇甲醇溶液100 μL,氮吹至近干;采用Waters ACQUITY UPLC BEH Shield RP18色谱柱进行分离,电喷雾负离子扫描,多反应监测(MRM)模式检测,基质匹配外标法定量。方法学研究表明,四氢大麻酚、次大麻二酚、四氢大麻素、大麻萜酚在2~200 ng/mL范围内线性关系良好;大麻酚、大麻二酚、大麻二酚酸、四氢大麻酚酸A在0.4~40 ng/mL范围内线性关系良好,相关系数(r)均大于0.995;检出限和定量限分别为0.8~4 μg/kg和2~10 μg/kg。在不同加标水平下的平均回收率为82.0%~114.9%,相对标准偏差(RSD)均小于15%(n=6)。研究结果表明,采用EMR-Lipid净化剂净化食品基质时,净化效果明显,准确度较好。该方法灵敏、快速,准确度高,前处理简单,适用于食品基质中大麻素类化合物的准确定性定量检测。 Article type: Research Article Keywords: 高效液相色谱-串联质谱, 增强型脂质去除净化剂, 大麻素类化合物,…
Abstract Background: Distressing nightmares are a core symptom of posttraumatic stress disorder (PTSD) and contribute to psychiatric comorbidity, impaired physical…
Abstract Background: Substance abuse has an impact on various cognitive domains, including memory. Even though this impact has been extensively…
Abstract Glioblastoma is the most aggressive malignant tumor overall and remains an incurable neoplasm with a median survival of 15…
Abstract Human immunodeficiency virus (HIV) infection is associated with a chronic inflammatory stage and continuous activation of inflammasome pathway. We…
Abstract Therapeutic hypothermia is well established as a standard treatment for infants with hypoxic-ischemic (HI) encephalopathy but it is only…
Abstract The safe and effective management of pain is a critical healthcare and societal need. The potential for misuse and…