抑郁症患者自杀行为与血清脑源性神经营养因子水平的关系

目的:探讨血清脑源性神经营养因子(BDNF)水平与抑郁症患者自杀行为之间的关系.方法:采用酶联吸附反应方法对有自杀行为的21例抑郁症患者(自杀组)、无自杀行为的52例抑郁症患者(非自杀组)以及80例正常人(对照组)血清的BDNF进行检测,应用汉密尔顿抑郁量表(HAMD)对抑郁症患者的抑郁症状进行评定. 结果:抑郁症患者...     

5-羟色胺和胆固醇水平对抑郁症患者再次自杀风险评估的研究

目的 探讨抑郁症患者血小板5-羟色胺（5-HT）和胆固醇水平与抑郁症患者再次自杀的关系.方法 对33例有自杀行为的抑郁症患者在接受治疗前测定血小板5-HT和胆固醇水平,评定汉密尔顿抑郁量表（HAMD-24）和Beck绝望量表（BHS）,然后进行2年的随访.结果 16例患者再次出现自杀行为,再次自杀组血小板5-HT及血清胆固醇水平显著低于无再次自杀组（P＜0.01）.5-HT和血清胆固醇水平与HAMD-24、BHS分及自杀次数、自杀严重程度均呈负相关（P＜0.01）,且5-HT与血清胆固醇水平呈正相关（P＜0.01）.多重回归分析显示血小板5-HT浓度、家族史是自杀次数的主要影响因素.结论 低血小板5-HT及血清胆固醇浓度是抑郁症自杀的危险因素,对抑郁症自杀行为可能具有一定的的预测作用.     

有无自杀意念抑郁症患者抑郁情绪、认知应对策略及应激的比较研究

目的:探讨有无自杀意念抑郁症患者抑郁情绪、认知应对策略及应激性生活事件的差异。方法:对143例抑郁症患者进行自编一般情况问卷、Beck抑郁自评量表(BDI)、认知情绪调节问卷中文版(CERQ-C)评定。结果:有自杀意念抑郁症发作患者BDI总分、婚姻家庭应激及社会生活应激分及CERQ-C适应性策略与不适应性策略总分显著高于无自杀意念抑郁症患者(P<0.05或P<0.01)。有自杀意念抑郁症患者抑郁总分与工作学习应激、婚姻家庭应激、社会生活应激及CERQ-C不适应性策略分呈显著正相关(r=0.569,0.470,0.341,0.303,P<0.05或P<0.01);无自杀意念抑郁症患者抑郁总分仅与婚姻家庭应激呈显著正相关(r=0.361,P<0.01)。结论:有自杀意念较无自杀意念抑郁症患者经历更多的负性生活事件,存在更严重的抑郁情绪,较多地采用认知应对策略。     

抑郁症患者自杀行为与色氨酸羟化酶基因及单胺氧化酶A基因多态性的关联研究

目的:探讨抑郁症患者自杀行为与色氨酸羟化酶(TPH)、单胺氧化酶A(MAOA)基因多态性的相关性. 方法:符合中国精神障碍分类与诊断标准第3版抑郁症诊断标准患者212例,汉密尔顿抑郁量表评分≥17分,其中64例患者有自杀或自杀未遂行为(有自杀行为组),148例患者无自杀行为(无自杀行为组).采用聚合酶链式反应扩增及限制性片段长度多态性技术检测TPH、MAOA基因多态性,与抑郁症患者自杀行为进行关联分析. 结果:TPH基因型频数和等位基因频率上有自杀行为组与无自杀行为组差异有统计学意义(x2=6.058,P=0.048;x2=4.774,P=0.029),有自杀行为组A/A基因型和等位基因A频率分布显著高于无自杀行为组(P＜0.05).MAOA基因型频数和等位基因频率上有自杀行为组与无自杀行为组差异无统计学意义(x2=0.922,0.898;P均＞0.05). 结论:TPH基因多态性与抑郁症患者的自杀行为存在关联,MAOA基因多态性与抑郁症患者自杀行为可能无关联.     

抑郁症自杀未遂患者血清脑源性神经营养因子水平的变化

目的探讨血清脑源性神经营养因子（BDNF）水平与抑郁症患者自杀行为的关系。方法采用酶联免疫分析实验测定抑郁症自杀未遂患者（36例）、无自杀行为患者（55例）及36名正常对照血清BDNF水平,对抑郁症患者以汉密尔顿抑郁量表（HAMD）评定抑郁症状,以自杀意念自评量表（SIOSS）评定自杀意念的强烈程度。结果抑郁症患者组血清BDNF水平低于正常对照组（P〈0．01）。自杀未遂组血清BDNF水平低于无自杀组及正常对照组（P〈0．01）。自杀未遂组HAMD总分和SIOSS总分高于无自杀组。抑郁症患者血清BDNF水平与SIOSS总分呈负相关。结论抑郁症患者存在血清BDNF降低,BDNF水平可能是自杀倾向行为的生物学标志。     

抑郁症自杀行为的相关危险因素研究

目的　研究抑郁症自杀行为的危险因素。方法　按CCMD 2 R诊断标准收集 2 0 7例住院的抑郁症病人 ,采用多因素Logistic回归分析与抑郁症自杀行为有关的危险因素。 结果　抑郁症自杀未遂 6 6例 ( 31 9% ) ,自杀与绝望 (相对危险度RR =9 30 8)、负性生活事件 (RR =3 84 2 )、妄想 (RR =3 56 5)及自责 (RR =2 99)呈正相关。结论　提示绝望、负性生活事件、妄想及自责是抑郁症患者自杀的危险因素     

首发未治疗抑郁症患者自杀风险与情感气质的关系

目的探讨抑郁症患者自杀风险在情感气质特征方面的危险因素。方法来自我院门诊103例首发未治疗抑郁症患者,根据简明国际神经精神访谈(the mini international neuropsychiatric interview,MINI)5.0中文版自杀模块访谈结果,分为有自杀风险组和无自杀风险组。用情感气质量表(temperament evaluation of the Memphis,Pisa,Paris,and San Diego-auto questionnaire,TEMPS-A)评估情感气质,用汉密尔顿抑郁量表(Hamilton depression rating scale,HAMD)评估抑郁症状的严重程度。结果 45.6%(47/103)的抑郁症患者伴有自杀风险。与无自杀风险组患者相比,有自杀风险组患者女性、无业及未婚者较多,发病年龄较早,HAMD总分以及TEMPSA中循环气质、抑郁气质、焦虑气质评分较高(均P 0.05)。logistic回归分析显示,女性(OR=3.392,95%CI:1.246～9.232)、发病年龄(OR=0.924,95%CI:0.844～0.966)、HAMD总分(OR=1.134,95%CI:1.022～1.258)和循环气质评分(OR=1.204,95%CI:1.015～1.427)与自杀风险相关。结论女性、发病年龄早、抑郁症状严重和循环气质突出可能为首发抑郁症患者自杀风险的危险因素。     

精神分裂症急性期伴自杀行为患者的临床分析

目的 探讨精神分裂症急性期伴自杀行为患者的临床特征.方法 对64例精神分裂症急性期伴自杀行为患者进行分析,并与564例精神分裂症急性期无自杀行为患者的临床资料进行对照分析.结果 2组在性别、婚姻状况方面无显著性差异;在文化程度、居住地、病前有无生活事件方面有显著性差异.在临床症状方面,研究组的幻觉、思维障碍、抑郁症状明显高于对照组,而冲动行为、情感平淡、意志减退2组则无显著性差异.发生自杀未遂者以服用精神科药物居多,发生地点多于家中,多数患者自杀前有表示过其自杀意图.结论 精神分裂症患者急性期伴自杀行为的危险因素为幻觉、思维障碍、抑郁症状、病前生活事件等.多与患者沟通及时发现其自杀意图,严格控制药物来源为有效地预防其自杀的措施之一.     

伴自杀意念抑郁症患者静息态下比率低频振幅特征研究

目的探讨伴自杀意念抑郁症患者的脑活动特征及其与抑郁严重程度、自杀意念和自杀危险的关系。方法运用比率低频振幅方法对30例伴自杀意念、22例不伴自杀意念抑郁症患者和21名正常对照的静息态功能磁共振图像进行比较,采用汉密尔顿抑郁量表17项(Hamilton depression scale 17-item,HAMD-17)评估抑郁症患者的抑郁严重程度,Beck自杀意念量表评估抑郁症患者的自杀意念和自杀危险,并分析伴自杀意念抑郁症组与不伴自杀意念抑郁症组差异脑区的比率低频振幅值与抑郁症严重程度、自杀意念和自杀危险的关系。结果伴自杀意念抑郁症组左侧枕上回/枕中回、右侧枕中回/枕下回fALFF值高于对照组(P0.05,AlphaSim校正),不伴自杀意念抑郁症组左侧枕中回fALFF值高于对照组(P0.05,AlphaSim校正),伴自杀意念抑郁症患者左侧枕中回、右侧枕中回fALFF值高于不伴自杀意念组(P0.05,AlphaSim校正)。伴自杀意念组左侧枕中回(r=0.366,P=0.046)、右侧枕中回(r=0.513,P=0.004)fALFF值分别与HAMD-17总分呈正相关,与Beck自杀意念量表相关无统计学意义(P0.05)。结论伴自杀意念抑郁症患者的双侧枕中回脑功能存在异常,但本研究未发现这种异常脑功能活动与Beck自杀意念量表的自杀意念和自杀危险因子具有相关性。     

抑郁症自杀未遂患者的临床特征

目的：探讨抑郁症自杀未遂患者的l临床特征。方法：采用自制的抑郁症自杀未遂调查表和Hamiltion抑郁量表(HAMD)，对符合中国精神疾病分类方案与诊断标准第2版修订本诊断标准的住院抑郁症自杀未遂患者67例进行调查，以同期住院无自杀行为的抑郁症患者145例为对照。结果：自杀未遂组HAMD总均分明显高于无自杀行为组，逐步回归分析发现绝望感对自杀的影响最大，其次是抑郁情绪、自卑感和自知力。结论：有自杀行为与无自杀行为的抑郁症在l临床症状方面存在一定差异。     

Alcoholism and suicidal behavior: a clinical overview

OBJECTIVE: The purpose of this paper was to provide a clinical review of the literature on the relation of alcoholism to suicidal behavior. METHOD: Studies of alcoholism and suicidal behavior available in MEDLINE, Institute for Scientific Information Databases (Science Citation Index Expanded, Social Sciences Citation Index, and Arts & Humanities Citation Index), EMBASE, and Cochrane Library were identified and reviewed. RESULTS: Alcoholism is associated with a considerable risk of suicidal behavior. Individuals with alcoholism who attempt or complete suicide are characterized by major depressive episodes, stressful life events, particularly interpersonal difficulties, poor social support, living alone, high aggression/impulsivity, negative affect, hopelessness, severe alcoholism, comorbid substance, especially cocaine abuse, serious medical illness, suicidal communication, and prior suicidal behavior. Partner-relationship disruptions are strongly associated with suicidal behavior in individuals with alcoholism. CONCLUSION: All individuals with alcoholism should receive a suicide risk assessment based on known risk factors.     

Association of comorbid posttraumatic stress disorder and major depression with greater risk for suicidal behavior

OBJECTIVE: Posttraumatic stress disorder (PTSD) increases the risk of suicidal behavior; a major depressive episode also increases the risk for suicidal behavior. The authors' goal was to examine the effect of comorbid PTSD and major depressive episode on suicidal behavior. METHOD: Inpatients with a diagnosis of major depressive episode (N=156) were assessed for PTSD, suicidal behavior, and clinical risk factors for suicidal acts. RESULTS: Patients with comorbid major depressive episode and PTSD were more likely to have attempted suicide, and women with both disorders were more likely to have attempted suicide than men with both disorders. Cluster B personality disorder and PTSD were independently related to history of suicide attempts. CONCLUSIONS: The greater rate of suicide attempts among patients with comorbid PTSD and major depressive episode was not due to differences in substance use, childhood abuse, or cluster B personality disorders.     

抑郁症自杀未遂患者血清总胆固醇水平研究

目的:对抑郁症自杀未遂患者的血清胆固醇水平与自杀行为的关系进行研究。方法:对抑郁症患者进行血清胆固醇水平测定,其中伴自杀未遂行为者26例,不伴自杀行为者32例,以正常健康者30名为对照。结果:抑郁症伴自杀未遂行为组血清胆固醇水平明显低于无自杀行为组和正常对照组。血清胆固醇水平与自杀的严重程度呈明显负相关。结论:低血清胆固醇水平可增加抑郁症自杀的风险。推测低血清胆固醇导致的自杀行为可能与中枢5-羟色胺(5-HT)功能降低有关。     

Prospective study of clinical predictors of suicidal acts after a major depressive episode in patients with major depressive disorder or bipolar disorder

OBJECTIVE: The authors investigated the predictive potential of a stress-diathesis model for suicidal behavior based on correlates of past suicidal acts. In this model, suicidal acts are precipitated by stressors such as life events or a major depressive episode in the setting of a propensity for acting on suicidal urges. This diathesis is expressed as the tendency to develop more pessimism in response to a stressor and/or the presence of aggressive/impulsive traits. The predictive potential of the diathesis was tested by determining whether clinical correlates of past suicidal behavior predict suicidal acts during a 2-year follow-up of patients with a major depressive episode. METHOD: Patients with DSM-III-R major depressive disorder or bipolar disorder (N=308) were assessed at presentation for treatment of a major depressive episode. Potential predictors of suicidal acts in the 2 years after study enrollment were identified on the basis of an association with previous suicidal behavior and were tested by using Cox proportional hazards regression analysis. In addition, pessimism and aggression/impulsivity factors were generated, and their predictive ability was tested by using Cox proportional hazards regression analysis. RESULTS: The three most powerful predictors of future suicidal acts were a history of suicide attempt, subjective rating of the severity of depression, and cigarette smoking, each of which had an additive effect on future risk. The pessimism and aggression/impulsivity factors both predicted suicidal acts, and each factor showed an additive effect. CONCLUSIONS: In addition to obtaining a history of suicidal behavior, clinicians may find it useful to assess patients' current level of pessimism, aggressive/impulsive traits, and comorbidity with substance use disorders, including nicotine-related disorders, to help identify patients at risk for suicidal behavior after major depression. Interventions such as aggressive pharmacotherapeutic prophylaxis to prevent relapse or recurrence of depressive symptoms may protect such at-risk individuals from future suicidal behavior.     

Posttraumatic stress disorder comorbid with major depression: factors mediating the association with suicidal behavior

OBJECTIVE: The purpose of the study was to determine if patients with a history of major depressive episode and comorbid posttraumatic stress disorder (PTSD) have a higher risk for suicide attempt and differ in other measures of suicidal behavior, compared to patients with major depressive episode but no PTSD. In addition, to explore how PTSD comorbidity might increase risk for suicidal behavior in major depressive episode, the authors investigated the relationship between PTSD, cluster B personality disorder, childhood sexual or physical abuse, and aggression/impulsivity. METHOD: The subjects were 230 patients with a lifetime history of major depressive episode; 59 also had lifetime comorbid PTSD. The demographic and clinical characteristics of subjects with and without PTSD were compared. Multivariate analysis was used to examine the relationship between suicidal behavior and lifetime history of PTSD, with adjustment for clinical factors known to be associated with suicidal behavior. RESULTS: Patients with a lifetime history of PTSD were significantly more likely to have made a suicide attempt. The groups did not differ with respect to suicidal ideation or intent, number of attempts made, or maximum lethality of attempts. The PTSD group had higher objective depression, impulsivity, and hostility scores; had a higher rate of comorbid cluster B personality disorder; and were more likely to report a childhood history of abuse. However, cluster B personality disorder was the only independent variable related to lifetime suicide attempts in a multiple regression model. CONCLUSIONS: PTSD is frequently comorbid with major depressive episode, and their co-occurrence enhances the risk for suicidal behavior. A higher rate of comorbid cluster B personality disorder appears to be a salient factor contributing to greater risk for suicidal acts in patients with a history of major depressive episode who also have PTSD, compared to those with major depressive episode alone.     

Sex differences in clinical predictors of suicidal acts after major depression: a prospective study

OBJECTIVE: Whether sex differences exist in clinical risk factors associated with suicidal behavior is unknown. The authors postulated that among men with a major depressive episode, aggression, hostility, and history of substance misuse increase risk for future suicidal behavior, while depressive symptoms, childhood history of abuse, fewer reasons for living, and borderline personality disorder do so in depressed women. METHOD: Patients with DSM-III-R major depression or bipolar disorder seeking treatment for a major depressive episode (N=314) were followed for 2 years. Putative predictors were tested with Cox proportional hazards regression analysis. RESULTS: During follow-up, 16.6% of the patients attempted or committed suicide. Family history of suicidal acts, past drug use, cigarette smoking, borderline personality disorder, and early parental separation each more than tripled the risk of future suicidal acts in men. For women, the risk for future suicidal acts was sixfold greater for prior suicide attempters; each past attempt increased future risk threefold. Suicidal ideation, lethality of past attempts, hostility, subjective depressive symptoms, fewer reasons for living, comorbid borderline personality disorder, and cigarette smoking also increased the risk of future suicidal acts for women. CONCLUSIONS: These findings suggest that the importance of risk factors for suicidal acts differs in depressed men and women. This knowledge may improve suicide risk evaluation and guide future research on suicide assessment and prevention.     

Suicidal behavior in patients with schizophrenia and other psychotic disorders.

OBJECTIVE: Patients with schizophrenia are known to be at high risk for suicide attempts and dying by suicide. However, little research has been conducted to determine whether the risk for suicidal behavior is elevated among patients with psychosis in general. METHOD: This study evaluated 1-month and lifetime rates of suicidal behavior among 1,048 consecutively admitted psychiatric inpatients (ages 18 to 55 years) with DSM-III-R psychotic disorders. Demographic, clinical, and diagnostic correlates of suicidal behavior were examined. RESULTS: A high rate of suicidal behavior was found in the group: 30.2% reported a lifetime history of suicide attempts, and 7.2% reported a suicide attempt in the month before admission. The highest 1-month and lifetime rates were found in patients with schizoaffective disorder and major depression with psychotic features. Ratings of the medical dangerousness of the most recent suicide attempt on the basis of the extent of physical injury were higher in patients with schizophrenia spectrum psychoses. Agreement was high between emergency room assessments and semistructured interview assessments of suicidal behavior. CONCLUSIONS: Rates of suicidal behavior were high across a broad spectrum of patients with psychotic disorders; patients with a history of a current or past major depressive episode (as a part of major depressive disorder or schizoaffective disorder) were at a greater risk for suicide attempts, but patients with schizophrenia, on average, made more medically dangerous attempts. Risk factors for suicidal behavior in patients with psychosis appear to vary compared to those for the general population.