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1.
脑梗塞患者血浆内皮素与肾素──血管紧张素系统动态观察   总被引:13,自引:0,他引:13  
本文动态观察40例脑梗塞(CI)患者血浆内皮素(ET)及血管紧张素Ⅱ(AⅡ)、醛固酮(ALD)的变化。结果表现:病程3天内及10~14天血浆ET、AⅡ、ALD明显高于病程25~28天、脑动脉硬化组及正常对照组。病程25~28天者与脑动脉硬化组无差异,但二者均高于正常对照组。血浆ET、AⅡ在CI伴高血压者高于无高血压者,有糖尿病史者高于无糖尿病史者,病情重型者高于病情轻、中型者。病程3天内,血浆ET与AⅡ呈直线正相关。  相似文献   

2.
载脂蛋白E与脑动脉硬化症   总被引:1,自引:0,他引:1  
本文观察78例脑动脉硬化症患者与对照组44例,对其血清载脂蛋白E(APOE)和高密度脂蛋白(HDL-C)、低密度脂蛋白(LDL-C)、胆固醇(TC)、甘油三脂(TG)、载脂蛋白AI(APOAI)、载脂蛋白B(100)(APOB(100))进行含量测定,并将APOE与HDL-C、LDL-C、TC、TG、APOAI、APOB(100)逐一进行相关比较,结果发现:脑动脉硬化症病人(CAS)血清APOE、LDL-C、TC、TG、APOB(100)明显高于正常对照组(P<0.01),HDL-C显著低于正常对照组(P<0.01),APOAI无明显变化(P>0.05),且APOE与HDL-C呈负相关;与LDL-C、TC、TG、APOB(100)呈正相关;与APOAI无直线相关关系。提示APOE可做为诊断脑动脉硬化症的重要指标。  相似文献   

3.
目的研究实验性癫痫发作大鼠海马结构内一氧化氮(NO)环磷酸鸟苷(cGMP)信使机制及其意义。方法雄性SD大鼠41只,随机分为对照组(5只)、红藻氨酸(KA)10、30、60分钟组(每组6只)和L硝基精氨酸甲酯(LNAME)+KA10、30、60分钟组(每组6只)。用放射免疫法测定KA诱导性癫痫发作中各时点海马结构内cGMP含量及LNAME的干预效应。结果KA注射引起大鼠海马结构内cGMP浓度升高,并加重大鼠癫痫发作(湿狗样摇动提早出现和发生次数增多);KA注射前30分钟给予LNAME可明显抑制KA10、30分钟组cGMP浓度的升高,但LNAME对KA60分钟组cGMP的抑制作用不显著。结论在KA发作早期,cGMP浓度升高与内源性NO有关;NO的抗发作效应可能与cGMP信使机制存在某种联系。  相似文献   

4.
研究蛛网膜下腔出血(SAH)后血浆中内皮素(ET)、一氧化氮(NO)、环磷鸟苷(cGMP)的含量变化。方法用单次杭大地注血法制成兔SAH模型。采用生物化学法和放射免疫法,对免SAH后1~4d血浆中ET、NO、cGMP的含量进行了测定。结果兔SAH后2、3、4dET的含量升高,第3天达峰值。NO含量在SAH后第3、4天下降。SAH后第4天CGMP含量与正常相比相差显著。结论ET、NO、cGMP的含量在SAH后发生变化,它们可能参与SAH后脑血管痉挛的发生。  相似文献   

5.
GMP—140与脑血栓形成的关系研究   总被引:4,自引:0,他引:4  
目的探讨急性脑血栓形成不同时期GMP-140含量的变化。方法测定32例急性脑血栓患者病后3d内血浆中GMP-140、SOD和MDA的含量,其中25例患者于病程第10~14d再次抽血复查。另选28例性别、年龄组成相似的动脉硬化患者作为对照。结果与动脉硬化组比较,脑血栓患者急性期血浆中GMP-140和MDA含量显著增高(P<0.05),SOD含量显著降低(P<0.05);至稳定期,脑血栓患者血浆中GMP-140、MDA和SOD含量与脑动脉硬化组无显著差异(P>0.05)。结论急性脑血栓形成时GMP-140含量增高与脑组织损伤有关  相似文献   

6.
血清ApoE对脑动脉硬化症的诊断价值   总被引:5,自引:0,他引:5  
本文观察42例脑动脉硬化症患者与正常对照组44例,对其血清ApoE和HDL-C、LDL-C、TC、TG、ApoAI、ApoB10026含量进行测定,并将ApoE与HDL-C、LDL-C、TC、TG、ApoAI、ApoB100逐一进行相关比较,结果发现:脑动脉硬化症病人血清ApoE、LDL-C、TC、TG、ApoB100明显高于正常对照组(P〈0.01),HDL-C显著低于正常对照组(P〈0.01)  相似文献   

7.
红景天保护缺血再灌注损伤鼠脑细胞的作用及机理研究   总被引:21,自引:0,他引:21  
目的研究红景天对大鼠脑缺血再灌注损伤的作用。方法4VO法复制缺血再灌注动物模型;放免法及化学发光法测定乙酰胆碱(Ach)、一氧化氮(NO)及内皮素(ET)含量;细胞培养观察红景天对神经细胞的作用。结果(1)缺血再灌注组(IR)Ach含量显著低于假手术组(SAM),药物预防后缺血再灌注组(R+IR)及缺血再灌注后药物治疗组(IR+R)较IR组显著升高。(2)IR组NO含量显著高于SAM组,R+IR组及IR+R组NO含量显著降低。(3)IR组ET含量显著高于SAM组而R+IR组显著降低。(4)红景天甙培养组细胞存活率及LDH含量明显高于对照组,NMDA损伤+红景天甙组细胞存活率明显高于NMDA损伤组,LDH含量却明显降低。结论红景天对大鼠脑缺血再灌注损伤时脑神经细胞具有保护作用。  相似文献   

8.
高血压脑动脉硬化大鼠内皮素及一氧化氮变化的研究   总被引:6,自引:0,他引:6  
目的 探讨高血压脑动脉硬化时( E T 与 N O)变化的特点以及 E T、 N O 对脑动脉硬化的影响。方法 用双肾双夹法复制出高血压 S D 大鼠,持续 14 周比较实验组与对照组大脑中动脉及基底动脉的平滑肌厚度,以及测定 E T、 N O 在血浆中的含量。结果 肾血管狭窄后血压持续升高,至 14 周时血压至 27.5±33.5k Pa。大鼠的大脑中动脉及基底动脉平滑肌增厚、管腔狭窄,血管壁有重构。血浆 E T 水平明显高于对照组( P< 0.01),血浆 N O 水平与对照组无显著性差异( P> 0.05)。结论 肾脏缺血可引起 E T 和 N O 合成、分泌明显的不平衡, E T 分泌增多、 N O 相对分泌不足。这种变化可能是致使长期高血压、脑血管平滑肌增厚及脑动脉硬化的重要因素。  相似文献   

9.
目的 探讨伴有皮层下梗死和白质脑病的常染色体显性遗传性脑动脉病(cerebral autosome dominant arteriopathy with subcortical infarcts and leukoencephalopathy,CADASIL)患者的临床特点和诊断方法。方法 对1例CADASIL患者及其亲属的临床表现、影像学(MRI、CT)特点及基因改变等方面进行了系统研究,并针对性地进行了肌肉及神经活检。结果 患者的临床表现为记忆力减退,有脑卒中发作;MRI、CT检查可见多发性梗死、脑白质变性、脑组织活检示小血管玻璃样变、嗜锇颗粒;NOTCH3第4外显子错义突变以及明确的家族史,没有高血压、动脉硬化,故符合CADASIL的诊断标准。结论 本病通过临床特点、影像学改变、基因检测及皮肤活检,可在生  相似文献   

10.
采用全血形态法、致敏羊红细胞花环直接法、琼脂单扩散法、死活菌鉴别染色法及聚乙二醇浊度法,对34例皮层下动脉硬化性脑病(SAE)患者及40例脑动脉硬化症患者进行免疫学研究。结果表明,SAE患者及脑动脉硬化症患者外周血PHA淋巴细胞转化率及辅助性T细胞(CD4)显著降低;SAE患者外周血中性粒细胞吞噬率显著降低,而血清IgA、IgM、C3、C4、CIC水平显著升高;脑动脉硬化症患者血清IgG、IgA、C3、C4水平亦显著增高。结果提示SAE及脑动脉硬化症患者确实存在免疫紊乱现象,且SAE患者较脑动脉硬化症患者紊乱更为显著。  相似文献   

11.
Ströhle A 《Der Nervenarzt》2003,74(3):279-91; quiz 292
Clinical and preclinical studies have gathered substantial evidence that stress response alterations play a major role in the development of major depression, panic disorder, and post-traumatic stress disorder. The stress response, the hypothalamic pituitary adrenocortical (HPA) system and its modulation by corticotropin-releasing hormones (CRH),corticosteroids,and their receptors, and the roles of natriuretic peptides and neuroactive steroids are described. We review the role of the HPA system in major depression, panic disorder, and post-traumatic stress disorder and its possible relevance for treatment. Impaired glucocorticoid receptor function in major depression is associated with an excessive release of neurohormones such as CRH, to which a number of signs and symptoms characteristic of depression can be ascribed. In panic disorder, a role of central CRH in panic attacks has been suggested. Atrial natriuretic peptide (ANP) is causally involved in sodium lactate-induced panic attacks. Furthermore, preclinical and clinical data on its anxiolytic activity suggest that nonpeptidergic ANP receptor ligands may be potentially useful in the treatment of anxiety disorders. Post-traumatic stress disorder is characterized by a peripheral hyporesponsive HPA system and elevated CRH concentrations in the CSF. This dissociation is probably related to an increased risk of this disorder. We further review recent data that describe an important role of GABA(A)-receptor modulatory,3 alpha-reduced neuroactive steroids in major depression, anxiety, and its treatment. Antidepressants are effective in both depression and anxiety disorders and have major effects on the HPA system,especially on glucocorticoid and mineralocorticoid receptors. Normalization of HPA system abnormalities is a strong predictor of the clinical course, at least in major depression and panic disorder. Currently,CRH-R1 or glucocorticoid receptor antagonists and ANP receptor agonists are being studied and may provide future treatment options more closely related to the pathophysiology of these disorders.  相似文献   

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13.
We investigated whether polymorphisms of the dopamine D4 receptor (DRD4) and polymorphisms of the dopamine D3 receptor (DRD3) were associated with personality disorder symptomatology rather than with personality traits such as novelty seeking. DNA was obtained from 145 depressed patients in a clinical trial. These patients were assessed for the presence of personality disorder symptoms and disorders. The 2-repeat allele of the DRD4 exon III polymorphism was associated with increased rates of avoidant and obsessive personality disorder symptomatology. The T,T genotype of the DRD4 -521 C>T polymorphism was also associated with increased rates of avoidant and obsessive personality disorder symptomatology. The Gly9,Gly9 genotype of the DRD3 Ser9Gly polymorphism was associated with increased rates of obsessive personality disorder symptomatology. None of these three polymorphisms were associated with novelty seeking or other temperament traits on the Temperament and Character Inventory. Our results suggest that genetic polymorphisms of DRD4 and DRD3 may well be associated with personality traits, and that conflicting findings to date may arise from the problem of phenotype definition.  相似文献   

14.
本文目的是对沙盘游戏疗法在地中海贫血患儿心理干预中的应用进行综述,以期为地中海贫血患儿的心理康复提供参考。地中海贫血是以珠蛋白生成障碍为主要特征的遗传性疾病,由于长期输血治疗,患儿存在较多的心理和行为问题。沙盘游戏疗法作为一种有效、实用的儿童心理治疗方法,对提高地中海贫血患儿的康复效果、改善生存质量有重要的临床意义。  相似文献   

15.
本文目的是探讨癫痫共病抑郁的可能机制及临床诊疗。癫痫是一种常见的、慢性的、致残性的神经疾病,癫痫患者生活质量下降,存在明显的负性情绪,常伴发各种精神疾病。癫痫与抑郁具有共同的神经生物学基础,可能存在共同的发病机制。本文从癫痫共病抑郁的发病机制、临床诊断及治疗方面予以总结归纳。  相似文献   

16.
Decades of intervention research have produced a rich body of evidence on the effects of psychotherapies and pharmacotherapies with children and adolescents. Here we summarize and critique that evidence. We review findings bearing on the efficacy of psychosocial treatments and medications under controlled experimental conditions. We also report evidence, where available, on the effectiveness of both classes of treatment with clinically referred youth treated in real-world clinical contexts. In general, the large body of evidence on efficacy contrasts sharply with the small base of evidence on effectiveness. Addressing this gap through an enriched research agenda could contribute importantly to linking scientific inquiry and clinical practice—to the benefit of both ventures. This is one element of a multifaceted agenda for future research and for synthesis of research, which will require the interplay of multiple disciplines related to child and adolescent mental health.  相似文献   

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The authors studied the use of seclusion and restraint on an inpatient unit in a state psychiatric hospital. Of 69 randomly selected inpatients, 51% experienced seclusion or restraint at least once. More psychotic than nonpsychotic patients required seclusion or restraint. However, neither psychosis/nonpsychosis nor voluntary/involuntary admission status predicted the likelihood of violent threats or actions. Patients experiencing seclusion and restraint showed a nonsignificant trend toward longer mean length of stay in the hospital. The frequency of patient behavior leading to seclusion or restraint appeared to be directly related to the stimulation caused by the presence of many staff members and other patients.  相似文献   

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Modulation of pain and nociception by noxious counterstimulation, also called "diffuse noxious inhibitory controls" or DNIC-like effect, is often used in studies of pain disorders. It can be elicited in the trigeminal and spinal innervation areas, but no study has previously compared effects in both innervation areas. Therefore, we performed a study comparing DNIC-like effects on the nociceptive flexion reflex (NFR) and the nociceptive blink reflex as well as the respective pain sensations. In 50 healthy volunteers, the blink reflex elicited with a concentric electrode and the NFR were recorded before and after immersion of the contralateral hand in cold water. Responses were recorded as the subjective pain sensation and the reflex size. The cold water immersion of the contralateral hand elicited a reduction of both subjective pain sensation and reflex amplitude following the stimulation of both reflexes. However, there were no strong correlations between the individual reductions of both subjective pain sensation and reflex amplitude for both reflexes, and neither when results of the two reflexes were compared with each other. The dissociation between DNIC-like effects on pain and on nociception, which had been found previously already for the NFR, implies that both effects need to be studied separately.  相似文献   

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