Cortico-striatal gamma oscillations are modulated by dopamine D3 receptors in dyskinetic rats

Long-term levodopa administration can lead to the development of levodopa-induced dyskinesia.Gamma oscillations are a widely recognized hallmark of abnormal neural electrical activity in levodopa-induced dyskinesia.Currently,studies have reported increased oscillation power in cases of levodopa-induced dyskinesia.However,little is known about how the other electrophysiological parameters of gamma oscillations are altered in levodopa-induced dyskinesia.Furthermore,the role of the dopamine D3 receptor,which is implicated in levodopa-induced dyskinesia,in movement disorder-related changes in neural oscillations is unclear.We found that the cortico-striatal functional connectivity of beta oscillations was enhanced in a model of Parkinson’s disease.Furthermore,levodopa application enhanced cortical gamma oscillations in cortico-striatal projections and cortical gamma aperiodic components,as well as bidirectional primary motor cortex(M1)↔dorsolateral striatum gamma flow.Administration of PD128907(a selective dopamine D3 receptor agonist)induced dyskinesia and excessive gamma oscillations with a bidirectional M1↔dorsolateral striatum flow.However,administration of PG01037(a selective dopamine D3 receptor antagonist)attenuated dyskinesia,suppressed gamma oscillations and cortical gamma aperiodic components,and decreased gamma causality in the M1→dorsolateral striatum direction.These findings suggest that the dopamine D3 receptor plays a role in dyskinesia-related oscillatory activity,and that it has potential as a therapeutic target for levodopa-induced dyskinesia.

Effects of Ovariectomy and 17<i>β</i>-Estradiol Replacement on Dopamine D2 Receptors in Female Rats: Consequences on Sucrose, Alcohol, Water Intakes and Body Weight

Background: Mechanisms underlying overeating-induced obesity in post-menopausal woman include functional lack of 17β-estradiol dysregulating dopamine D2 receptors, thereby inducing food addiction, glucose craving or alcohol dependence through reward circuitry. This study aimed at further understanding 17β-estradiol and dopamine D2 receptors interferences in the etiology of woman obesity. Method: Seventy-two Wistar female rats weighing 200 - 205 g, individually-housed, were divided into non-ovariectomized control (C = 6 groups) and ovariectomized rats (OVX = 6 groups) which were concurrently subjected to the following treatments: Non-drug-treated (DMSO vehicle), 17β-estradiol (E2, 5 μg/kg, s.c.), sulpiride (SUL, 20 mg/kg, i.p.), bromocriptine (BR, 0.1 mg/kg, i.p.), E2 + SUL or E2 + BR, designating the 6 constitutive groups of either control or ovariectomy. Within each experimental group, consumption of different solutions (10% alcohol, 10% sucrose and water) as well as food intake and body weight were daily measured, for 10 consecutive days. Results: This study indicated that D2S was a specific inducer of alcohol and food intakes, but reduced sugar consumption. In addition, 17β- estradiol regulated the body weight set point, modulating D2S functions towards increased food intake at lower weights and decreased food intake at higher weights. D2S met the slow genomic actions induced by 17β-estradiol. Conversely, D2L inhibited alcohol and food intakes, but induced specifically sugar consumption, thereby regulating blood glucose levels and promoting energy expenditure in reducing body weight. Indeed, 17β-estradiol exerted a tonic inhibition on D2L which was released by OVX, exacerbating sugar intake and increasing body weight. D2L mediated the rapid metabolic effects of 17β-estradiol. Conclusion: Our results supported physiological data reporting that activation of the mostly expressed presynaptically D2S-class autoreceptors decreased dopamine release stimulating food intake, whereas activation of the predominantly postsynaptic isoform D2L receptors increased dopamine activity inhibiting food intake. Our studies indicated that 17β-estradiol acted on the two types of D2 receptors showing opposite functions to equilibrate energy intake vs. expenditure for weight set point regulation. Our data also supported biochemical findings reporting that 17β-estradiol induced D2 genes transcriptional regulation, thereby involving both types of D2 receptors in the etiology of obesity. The combined dysregulated effects of D2L and D2S receptors, as 17β-estradiol was lacking, would be causal factors underlying the etiology of obesity.

Effects of 17<i>β</i>-Estradiol on Dopamine D2 Receptors in Thiamine-Deficient Female Rats: Consequences on Sucrose, Alcohol, Water Intakes and Body Weight

Our previous studies showed that 17β-estradiol (E2) modulated dopamine D2 receptor in regulating body weight set-point. The aim of this study was to understand whether thiamine deficiency influenced the E2 modulation on dopamine D2 receptors, using bromocriptine mesylate (BR) and sulpiride (SUL) as selective central dopamine-D2 receptors agonist and antagonist respectively. We studied the E2-dopamine D2 receptors interferences in a 10-day thiamine-deficient female rats for which consumptions of water, sugar, alcohol and food were daily-recorded and their consequences on body weights assessed. Our results showed that the volume of water daily ingested doubled in thiamine-deficient female rats (OXT), while sugar and alcohol consumptions collapsed with decreased weight and food consumption. On the one hand, thiamine potentiated D2/BR activity (bromocriptine-activated D2 receptors) to induce sugar intake and inhibited the same D2/BR receptors to induce water intake. On the other hand, thiamine promoted D2/SUL receptors (sulpiride-inhibited D2 receptors) for enhanced alcohol intake, increased food consumption and weight gain. Taking together, thiamine modulated the actions of 17β-estradiol on both D2/BR and D2/SUL receptors activities.

Effects of Ovariectomy and 17β-Estradiol Replacement on the Activity of Dopamine D2 Receptors in the Selection of Macronutrients Carbohydrates, Lipids and Proteins in Females Rats

17β-estradiol modulates the activity of D2 receptors in the regulation of food intake and body weight. The functional lack of 17β-estradiol in postmenopausal women could create a dietary imbalance and cause body weight gain. This study aimed to better understand the interferences that could exist between 17β-estradiol, D2 receptors and the selection of carbohydrate, fat and protein consumption, as well as their consequences on body weight gain by using an animal model of the menopause. Ovariectomy exacerbates the consumption of foods rich in lipids. Thus confirming an inhibitory action of 17β-estradiol (E2) on the consumption of these types of foods. This consumption stimulates body weight gain, which is promoted by the high caloric content of these foods and not by the amount consumed. Our results showed a direct involvement of D2 receptors in food choice. This choice would be made according to the two (2) isoforms of the D2 receptors. The D2/BR isoform directs towards a high carbohydrate consumption, without causing a gain in body weight. While D2/SUL, promotes high fat food consumption, causing an increase in body weight. In women, 17β-estradiol modulates the activity ratio between these two D2 receptor isoforms to ensure energy and homeostatic balance, stabilizing food intake and body weight.

Expression and Significance of ECP, 25-(OH)D3 and M2 receptors in Children with Acute Attack of Asthma

Objective:To study the expression and significance of ECP, 25-(OH)D3 and M2 receptors in children with acute attack of asthma.Methods: Seventy children with bronchial asthma who first visited our hospital from September 2016 to September 2018 were divided into chronic persistence group, remission group and acute attack group. Thirty healthy children who underwent physical examination in our hospital were selected and divided into control group. The levels of ECP, 25-(OH) D3 and M2 receptors were analyzed by ELISA, and Pearson correlation analysis was performed.Results: Compared with the control group, the levels of ECP and M2 receptors in chronic persistence group, remission group and acute attack group increased, while the levels of 25-(OH)D3 decreased, with statistical difference (P<0.05). The levels of ECP and M2 receptors in acute attack group were higher than those in chronic persistence group, and the levels of 25-(OH)D3 were lower than those in chronic persistence group (P<0.05). The levels of ECP and M2 receptors in acute attack group were higher than those in remission group, and the levels of 25-(OH)D3 were lower than those in remission group (P<0.05). Compared with mild children, the levels of ECP and M2 receptors increased and 25-(OH)D3 decreased in moderate and severe children (P<0.05). Compared with moderate children, the levels of ECP and M2 receptors increased and 25-(OH)D3 decreased in severe children (P<0.05).There was a negative correlation between ECP and 25-(OH)D3 (r=-0.380, P=0.038);a negative correlation between 25-(OH)D3 and M2 receptor (r=-0.448,P=0.013);and a positive correlation between ECP and M2 receptor (r=0.450,P=0.013).Conclusions:The expression of ECP and M2 receptors increased during the acute attack of bronchial asthma in children, while the expression of 25-hydroxyvitamin D3 decreased during the acute attack of bronchial asthma in children. The correlation among ECP, 25-(OH) D3 and M2 receptors is significant in the clinical diagnosis of acute attack of bronchial asthma in children.

(-)-Stepholodine induced enhancement of cardiac muscle contractions mediated by D_1 receptors

Objective To investigate the effect of(-)-Stepholidine(SPD)on enhancing D1 receptor mediated contraction of cardiac muscle in isolated rat heart and to examine whether SPD has a direct effect on the heart dopamine D1 receptors.SPD an active ingredient of the Chinese herb Stephania intermedia,binds to dopamine D1 and D2 like receptors.Biochemical,electrophysiological and behavioural experiments have provided strong evidence that SPD is both a D(1/5)agonist and a D(2/4)antagonist,which could indicate unique antipsychotic properties.Methods Normal adult rat working hearts were isolated by Langendorff technique.Results SPD significantly increased the cardiac muscle contraction in a dose-dependent manner.The selective D1 dopamine receptor antagonist SCH23390(1 μM)blocked the SPD induced heart contraction,however,neither the β-receptor antagonist propranolol(1 μM)nor the α1-receptor antagonist prazosin(1 μM)had any effect on blocking SPD induced heart contractions.Moreover,the L-type Ca2+ channel inhibitor nimodipine(1 μM)completely blocked the effect of SPD on cardiac muscle contraction.Conclusions SPD show the effect on enhancing contraction of isolated rat heart through activating L-type Ca2+ channel mediated by heart D1 receptors.

Mediating effect of dopamine D3 receptors on Jak2 and GABAAα1 expression in mouse brains induced by cocaine

Background Cocaine addiction may involve complex neuroadaptations, including many changes of genes expression. Dopamine D3 receptors play an important role in cocaine addiction; however, its role in cocaine induced gene expression change is poorly understood. To identify the changes in gene expression induced by repeated cocaine exposure through D3 dopamine receptors, we compared the expression of four molecules： Janus kinase 2 （Jak2）, g-aminobutanoic acid receptor subunit alpha 1 （GABAAα1）, glutamate receptor AMPA3 alpha 3 （GluR 3） and stromal cell derived factor 1 （SDF1）. These four have been implicated in mediating the actions of cocaine in the nucleus accumbens （NAc） and caudoputamen （CPu） in mice after acute and repeated cocaine exposure. Methods For the acute and repeated injections, the mice were divided into four groups： 30 mg/kg cocaine, nafadotride 0.5 mg/kg ＋ cocaine 30 mg/kg, nafadotride 0.5 mg/kg, and saline as the basal group. The expression of Jak2, GABAAα1, GluR 3 and SDF1 were assayed by Western blot, quantitative real-time RT-PCR and immunohistochemistry. Results Twenty-four hours after seven consecutive days of repeated cocaine exposure, the expression of GABAAα1 decreased in cocaine group compared with basal line and further decreased in the cocaine ＋ nafadotride group and remained at basal level in the nafadotride group. Similarly, the Jak2 expression decreased in cocaine group compared with base line. However, the levels of Jak2 increased in cocaine ＋ nafadotride group compared with cocaine group, while remained at basal level in nafadotride group. Conclusions GABAAα1 and Jak2 may be involved in chronic cocaine induced neuroadaptations. D3 dopamine receptors play an important role in the expression of these genes.

Activation of Dopamine D2 Receptors Alleviates Neuronal Hyperexcitability in the Lateral Entorhinal Cortex via Inhibition of HCN Current in a Rat Model of Chronic Inflammatory Pain

Functional changes in synaptic transmission from the lateral entorhinal cortex to the dentate gyrus(LEC-DG)are considered responsible for the chronification of pain.However,the underlying alterations in fan cells,which are the predominant neurons in the LEC that project to the DG,remain elusive.Here,we investigated possible mechanisms using a rat model of complete Freund’s adjuvant(CFA)-induced inflammatory pain.We found a substantial increase in hyperpolarization-activated/cyclic nucleotide-gated currents(Ih),which led to the hyperexcitability of LEC fan cells of CFA slices.This phenomenon was attenuated in CFA slices by activating dopamine D2,but not D1,receptors.Chemogenetic activation of the ventral tegmental area-LEC projection had a D2 receptor-dependent analgesic effect.Intra-LEC microinjection of a D2 receptor agonist also suppressed CFA-induced behavioral hypersensitivity,and this effect was attenuated by pre-activation of the Ih.Our findings suggest that down-regulating the excitability of LEC fan cells through activation of the dopamine D2 receptor may be a strategy for treating chronic inflammatory pain.

The role of dopamine D2 receptors in the amygdala in metabolic and behavioral responses to stress in male Swiss-Webster mice

OBJECTIVE： The D2 dopamine receptor is found in different parts of the amygdala. However, its contribution to stress is unknown. Thus, in the present study, we examined the effects of excitation and inhibition of D2 dopamine receptors in the amygdala on the metabolic and hormonal changes in response to stress. METHODS： Bilateral amygdala cannulation was carried out in Swiss-Webster mice （n = 7）. On recovery, different doses of the dopamine D2 receptor antagonist, sulpiride （1, 5 and 10μg/mouse） or the dopamine D2 receptor agonist, bromocriptine （1, 5 and 10μg/mouse） were injected into the amygdala. The animals were then placed in stress apparatus （communication box） where they received an electric shock （10 mV voltage, 10 Hz frequency and 60 s duration） after 30 rain. The animal＇s activities were recorded for 10 min before and 10 min after the stress induction. Locomotion, rearing and freezing were investigated. Metabolic changes, such as food and water intake and anorexia, were studied. RESULTS： The results show that stress increased the concentration of plasma corticosterone, which was followed by a decrease in locomotion and rearing and an increase in freezing behavior. Furthermore, both weight and water and food intake were reduced. Administration of bromocriptine led to a reduction of corticosterone at doses of 1 and 5 ~tg/mouse and an increase of corticosterone at 10 ~tg/mouse. Additionally, lower doses ofbromocriptine （1 and 5 ~tg/mouse） caused an increase in locomotion and rearing and a decrease in freezing behavior. Similar results were observed with sulpiride injection. CONCLUSION： D2 dopamine receptors can play a major role in the amygdala in stress. Both an agonist and an antagonist of the D2 receptor attenuate the metabolic and hormonal changes observed in response to stress

Relationship between electroacupuncture analgesia and dopamine receptors in nucleus accumbens

目的：研究多巴胺受体拮抗剂左旋四氢巴马汀（ｌＴＨＰ）加强电针镇痛（ＥＡＡ）的原理，阐明中枢神经系统内多巴胺（ＤＡ）系统在ＥＡＡ中的作用．方法：分别将Ｄ１受体激动剂ＳＫ＆Ｆ３８３９３和Ｄ２受体激动剂ｑｕｉｎｐｉｒｏｌｅｈｙｄｒｏｃｈｌｏｒｉｄｅ（Ｑｕｉ）注射入大鼠伏膈核，观察对ＥＡＡ及ｌＴＨＰ加强ＥＡＡ的作用．结果：ＳＫ＆Ｆ３８３９３（５μｇ，１０μｇ）明显对抗了ｌＴＨＰ加强ＥＡＡ的作用，１０μｇＳＫ＆Ｆ３８３９３则减弱ＥＡＡ；Ｑｕｉ（１０μｇ，２０μｇ），对ＥＡＡ及ｌＴＨＰ加强ＥＡＡ的作用没有显著影响．结论：伏膈核内Ｄ１受体活动在ＥＡＡ及ｌＴＨＰ加强ＥＡＡ中起重要作用，Ｄ２受体没有显著作用．

Differential distributions and trafficking properties of dopamine D1 and D5 receptors in nerve cells

Objective To explore the possible differential trafficking properties of the dopamine D 1-like receptor subtypes, D 1 receptor and D5 receptor. Methods To visualize distributions of dopamine D 1-like receptor subtypes at subcellular level, the yellow and cyan variants of green fluorescent protein （GFP） were used to tag D1 and D5 receptors. After transfection with the tagged dopamine receptors, the neuroblastoma cells NG108-15 were treated with D1 agonist SKF38393 or acetylcholine （ACh）. Then we observed the subcellular distributions of the tagged receptors under the confocal microscopy and tried to determine trafficking properties by comparing their distribution patterns before and after the drug treatment. Results In resting conditions, D 1 receptors located in the plasma membrane of NG108-15 cells, while D5 receptors located in both plasma membrane and cytosol. With the pre-treatment of SKF38393, the subcellular distribution of D1 receptors was changed. The yellow particle-like fluorescence of tagged D 1 receptors appeared in the cytosol, indicating that D 1 receptors were internalized into cytosol from the cell surface. Same situation also occurred in ACh pre-treatment. In contrast, the subcellular distribution of D5 receptors was not changed after SKF38393 or ACh treatment, indicating that D5R was not translocated to cell surface. Interestingly, when D1 and D5 receptors were co-expressed in the same cell, both kept their distinct subcellular distribution patterns and the trafficking properties. Conclusion Our present study reveals that in NG108-15 nerve cells, dopamine D1 and D5 receptors exhibit differential subcellular distribution patterns, and only D1 receptor has a marked trafficking response to the drug stimulation. We further discuss the potential role of the differential trafficking properties of D1-like receptors in complex modulation of DA signaling.

NMDA受体与α_(2)肾上腺素受体参与神经精神疾病的分子机制研究进展

谷氨酸与去甲肾上腺素及其对应受体分别构成谷氨酸能系统和去甲肾上腺素能系统,二者在多种神经精神疾病过程中发挥重要作用,并且存在密切对话。该文回顾了高级中枢神经系统中谷氨酸受体——N-甲基-D-天冬氨酸受体(Nmethyl-D-aspartate receptor,NMDA-R)和肾上腺素受体——α_(2)肾上腺素受体(alpha 2 adrenergic receptor,α_(2)-AR)参与神经精神疾病的具体分子机制,以及二者可能的对话机制,对深入认识两种受体相关神经精神疾病的神经生物学机制、药物研发和优化临床治疗方案具有重要意义。

Modeling of Dopamine D2 Receptor and its Agonist DOCK Analyses

A model of transmembrane helices of dopamine D2 receptor was constructed using the X ray coordinates of bacteriorhodopsin (BR) as a template. Based on the results from the model and the site directed mutagenesis experience, the binding pocket, including nine amino acid residues beside indispensable Asp86, Ser141 and Ser144 residues, was defined. In order to testify the 3D structure of dopamine D2 receptor and specially test the binding sites, two sets of D2 receptor agonists (one was rigid and the other flexible) were selected for docking. A good result of correlation between logIC 50 and binding energy E b indicates that the predicted model is reliable for the investigation of the receptor ligand interaction and design of new active molecules.

自然杀伤细胞家族2成员D受体-配体轴在血液瘤中的作用研究进展

自然杀伤细胞家族2成员D(NKG2D)受体通过表达在自然杀伤(NK)细胞和细胞毒性T淋巴(CTLs)细胞上激活这些免疫细胞对抗肿瘤。肿瘤细胞通过降低自然杀伤细胞家族2成员D配体(NKG2DLs)的表达来逃避免疫系统的监视,从而促进肿瘤的免疫逃逸。最新的研究揭示了NKG2D受体-配体轴在血液瘤的发展、免疫监视和治疗中的关键作用,尤其是在阐明免疫逃逸机制和开发新的治疗策略方面显示出巨大潜力。现从NKG2D受体-配体轴在血液瘤发病机制、免疫监测及治疗中的作用进行阐述,在加深对血液瘤病理机制理解的同时,为提升治疗效果开辟了新的策略。

SOX2/DRD2 signaling pathway facilitates astrocytic dedifferentiation in cerebral ischemic mice

Objective:To explore the effects of dopamine receptor D2(DRD2)on astrocytic dedifferentiation based on SOX2-regulated genes in neural stem cells(NSCs)and astrocytes.Methods:Immunofluorescence staining and SOX2-GFP mice were used to examine the lineage differentiation of SOX2-positive cells during the development of cerebral cortex.Primary NSCs/astrocytes culture,ChIP-seq and Western Blot were adopted to analyze and verify the expression of candidate genes.Pharmacological manipulation,neurosphere formation,photochemical ischemia,immunofluorescence staining and behavior tests were adopted to evaluate the effects of activating DRD2 signaling on astrocytic dedifferentiation.Results:Immunofluorescence staining demonstrated the NSC-astrocyte switch of SOX2-expression in the normal development of cerebral cortex.ChIP-seq revealed enrichment of DRD2 signaling by SOX2-bound enhancers in NSCs and SOX2-bound promoters in astrocytes.Western Blot and immunofluorescence staining verified the expression of DRD2 in NSCs and reactive astrocytes.Application of quinagolide hydrocholoride(QH),an agonist of DRD2,significantly promoted astrocytic dedifferentiation both in vitro and in vivo following ischemia.In addition,quinagolide hydrocholoride treatment improved locomotion recovery.Conclusion:Activating DRD2 signaling facilitates astrocytic dedifferentiation and may be used to treat ischemic stroke.

Distinct Roles of Dopamine Receptors in the Lateral Thalamus in a Rat Model of Decisional Impulsivity

The thalamus and central dopamine signaling have been shown to play important roles in high-level cognitive processes including impulsivity. However, little is known about the role of dopamine receptors in the thalamus in decisional impulsivity. In the present study,rats were tested using a delay discounting task and divided into three groups： high impulsivity（HI）, medium impulsivity（MI）, and low impulsivity（LI）. Subsequent in vivo voxel-based magnetic resonance imaging revealed that the HI rats displayed a markedly reduced density of gray matter in the lateral thalamus compared with the LI rats. In the MI rats, the dopamine D1 receptor antagonist SCH23390 or the D2 receptor antagonist eticlopride was microinjected into the lateral thalamus. SCH23390 significantly decreased their choice of a large, delayed reward and increased their omission of lever presses. In contrast,eticlopride increased the choice of a large, delayed reward but had no effect on the omissions. Together, our results indicate that the lateral thalamus is involved in decisional impulsivity, and dopamine D1 and D2 receptors in the lateral thalamus have distinct effects on decisional impulsive behaviors in rats. These results provide a new insightinto the dopamine signaling in the lateral thalamus in decisional impulsivity.

维生素D受体敲除诱导AT2R(-/-)小鼠骨骼肌纤维化

目的 探讨血管紧张素2型受体(angiotensin type 2 receptor, AT2R)、维生素D受体(vitamin D receptor, VDR)对小鼠骨骼肌纤维化的潜在调控作用。方法 使用16周龄野生型(wild type, WT)与AT2R(-/-)小鼠,12周龄AT2R(-/-)小鼠与AT2R(-/-)/VDR(-/-)(DKO)小鼠分别进行抓力测试,并对后肢肌肉作湿重系数比、纤维化因子、促纤维化因子表达的检测。结果 (1)与WT相比,虽然AT2R(-/-)小鼠的骨骼肌湿重比无明显差异,但纤维粘连蛋白(FN)、促纤维化因子CTGF、VEGF(P<0.05)、以及MSTN等mRNA水平都有不同程度的下降,Col-IV、TGF-β蛋白表达显著下降(P<0.05),AT2R(-/-)小鼠骨骼肌MSTN的含量显著降低(P<0.05);(2)与AT2R(-/-)小鼠相比,DKO小鼠纤维化指标Col-IV、TGF-β、VEGF蛋白表达均显著升高(P<0.05),肾素(Renin)的蛋白表达显著上调(P<0.05),免疫荧光检测显示DKO小鼠腓肠肌FN的表达强度、阳性面积都明显升高(P<0.05)。结论 AT2R基因敲除小鼠的肌肉纤维化程度减轻,而VDR敲除加重AT2R(-/-)小鼠骨骼肌纤维化,可能与肾素-血管紧张素系统活性升高导致组织纤维化程度增强有关。

β内啡肽、环氧合酶-2、多巴胺受体D2在右向左分流合并有先兆偏头痛患者血清中的表达及其与焦虑状况的关联性

目的 研究β内啡肽(β-EP)、环氧化酶-2(COX-2)、多巴胺受体D2(DRD2)在右向左分流(RLS)合并有先兆偏头痛患者血清中的表达及其与焦虑状况的关联性。方法 选取2022年7月至2023年7月吉林省一汽总医院收治的214例检查存在RLS的有先兆偏头痛患者,记作RLS偏头痛组,50例检查无RLS的有先兆偏头痛患者作为对照组,比较两组血清β-EP、COX-2、DRD2水平及焦虑自评量表(SAS)评分。另将RLS偏头痛组患者根据检查结果分为少、中、大量RLS偏头痛组(78例),分别为90、46、78例,比较三组血清β-EP、COX-2、DRD2水平及SAS评分。采用Spearman相关系数分析RLS偏头痛组患者血清β-EP、COX-2、DRD2水平与RLS分级、SAS评分的关系。结果 RLS偏头痛组血清β-EP、DRD2水平均低于对照组,COX-2水平及SAS评分高于对照组,差异有统计学意义(P<0.05)。中、大量RLS偏头痛组血清β-EP、DRD2水平低于少量RLS偏头痛组,大量RLS偏头痛组低于中量RLS偏头痛组,差异有统计学意义(P<0.05)。中、大量RLS偏头痛组血清COX-2水平、SAS评分高于少量RLS偏头痛组,大量RLS偏头痛组高于中量RLS偏头痛组,差异有统计学意义(P<0.05)。相关性分析结果显示,RLS偏头痛组患者血清β-EP、DRD2水平与RLS分级、SAS评分呈负相关(rs<0,P<0.05),血清COX-2水平与RLS分级、SAS评分呈正相关(rs>0,P<0.05)。结论 随着RLS合并有先兆偏头痛患者RLS分级的升高,其血清β-EP、DRD2表达降低,COX-2表达升高,且三者均与患者的焦虑状态密切相关。

DA、CARM1、25-(OH)-D 3在糖尿病患者外周血中的表达及与NAFLD发生的关系

目的探讨多巴胺(DA)、共激活剂相关精氨酸甲基转移酶1(CARM1)、25-羟维生素D 3[25-(OH)-D 3]在糖尿病患者外周血中的表达及与非酒精性脂肪肝(NAFLD)发生的关系。方法选取2021年5月至2023年2月在该院治疗的2型糖尿病(T2DM)合并NAFLD患者70例作为T2DM合并NAFLD组,同时选取单纯T2DM患者66例作为T2DM组,选取体检健康者70例作为健康组,比较各组外周血DA、CARM1、25-(OH)-D 3水平,同时分析T2DM合并NAFLD组不同血糖控制、严重程度患者外周血DA、CARM1、25-(OH)-D 3水平。采用Pearson相关分析外周血DA、CARM1、25-(OH)-D3水平与糖化血红蛋白(HbA1c)、受控衰减参数(CAP)的相关性,受试者工作特征曲线分析外周血DA、CARM1、25-(OH)-D 3诊断重度NAFLD的价值。结果T2DM合并NAFLD组外周血DA和25-(OH)-D 3水平明显低于T2DM组和健康组(P<0.05),而CARM1水平明显高于T2DM组和健康组(P<0.05);T2DM组外周血DA和25-(OH)-D 3水平明显低于健康组(P<0.05),而CARM1水平明显高于健康组(P<0.05)。T2DM合并NAFLD组血糖控制差者DA和25-(OH)-D 3水平明显低于血糖控制好者(P<0.05),而CARM1水平明显高于血糖控制好者(P<0.05)。重度患者DA和25-(OH)-D 3水平明显低于轻中度患者(P<0.05),而CARM1水平明显高于轻中度患者(P<0.05)。外周血DA、25-(OH)-D 3水平与HbA1c、CAP呈负相关(P<0.05),CARM1水平与HbA1c、CAP呈正相关(P<0.05)。CARM1、25-(OH)-D 3、DA诊断重度NAFLD的曲线下面积分别为0.858(95%CI 0.768~0.948)、0.922(95%CI 0.856~0.989)、0.571(95%CI 0.427~0.715)。结论DA和25-(OH)-D 3水平在T2DM患者外周血中降低,而CARM1水平升高,尤其在T2DM合并NAFLD患者中变化更加明显;DA、CARM1、25-(OH)-D 3水平与血糖控制、NAFLD严重程度存在相关性,其中CARM1、25-(OH)-D 3水平在诊断重度NAFLD方面有一定应用价值。

D-二聚体、白细胞介素-2受体、白细胞介素-33对恶性肿瘤患者化疗后并发脓毒症的预测价值

目的 探讨D-二聚体(D-D)、白细胞介素-2受体(IL-2R)、白细胞介素-33(IL-33)对恶性肿瘤患者化疗后并发脓毒症的预测价值。方法 选取160例恶性肿瘤化疗患者,根据其化疗后是否发生脓毒症分为脓毒症组(n=35)和非脓毒症组(n=125),比较两组患者的临床特征及D-D、IL-2R、IL-33水平。恶性肿瘤患者化疗后并发脓毒症的影响因素采用多因素Logistic回归分析;绘制受试者工作特征(ROC)曲线,计算曲线下面积(AUC),评估D-D、IL-2R、IL-33对恶性肿瘤患者化疗后并发脓毒症的预测价值。结果 脓毒症组年龄≥60岁、化疗周期≥2个、临床分期为Ⅲ~Ⅳ期、有侵入性操作、白细胞异常、合并糖尿病、住院时间≥30天、伴皮肤或黏膜溃疡患者比例均高于非脓毒症组,差异均有统计学意义(P﹤0.05)。脓毒症组患者D-D、IL-2R、IL-33水平均明显高于对照组,差异均有统计学意义(P﹤0.01)。多因素Logistic回归分析结果显示,年龄≥60岁、侵入性操作、合并糖尿病、D-D≥1.05 mg/L、IL-33≥13.61 pg/ml均是恶性肿瘤患者化疗后发生脓毒症的独立危险因素(P﹤0.05)。ROC曲线分析结果显示,D-D、IL-2R、IL-33预测恶性肿瘤患者化疗后发生脓毒症的AUC分别为0.854、0.896、0.904,其中IL-33的预测价值最高。结论 年龄≥60岁、侵入性操作、合并糖尿病、D-D≥1.05 mg/L、IL-33≥13.61 pg/ml均是恶性肿瘤患者化疗后发生脓毒症的独立危险因素,且D-D、IL-2R、IL-33对脓毒症的发生有一定的预测价值。