抑郁症患者认知功能障碍与血浆脑源性神经营养因子水平的相关性探讨

目的探讨抑郁症患者认知功能障碍与血浆脑源性神经营养因子(BDNF)的相关性。方法选取我院收治的98例确诊抑郁症患者,按照是否存在认知功能障碍分为A组(认知功能障碍组)42例与B组(非认知功能障碍组)56例,同时选取非抑郁症患者85例作为对照组,比较3组患者BDNF水平。结果对照组BDNF水平均明显高于A、B组(P0.05),但A、B组组间比较无明显差异(P0.05)。轻度、中度、重度认知功能障碍患者组间BDNF水平比较差异无统计学意义(P0.05)。结论血浆BDNF水平与抑郁症患者认知功能障碍无明显关系,但血浆BDNF水平低下与抑郁症发病有密切关系。     

抑郁症患者脑源性神经营养因子与认知功能的相关性研究

目的探讨抑郁症患者脑源性神经营养因子(BDNF)水平及其与认知功能的相关性。方法选择68例抑郁症患者为观察组,选取60例健康者为对照组。采用汉密尔顿抑郁量表(HAMD)评估2组抑郁严重程度,采用威斯康星卡片(WCST)评估认知功能,采用ELISA法检测血清BDNF水平。结果与对照组相比,观察组血清BDNF水平显著下降(P<0.05),WCST正确应答数及完成分类数显著减少,持续性及非持续性错误明显增多(P<0.05);Pearson相关分析结果显示:抑郁症患者BDNF水平及HAMD总分与WCST各项评分均无显著相关性(P>0.05)。结论抑郁症患者认知功能受损,血清BDNF水平显著下降,与认知功能可能无相关性。     

抑郁症患者血清脑源性神经营养因子水平与认知功能的关系

目的:探讨抑郁症患者血清脑源性神经营养因子(BDNF)水平与认知功能的关系。方法:选取2019年1月至2021年1月期间本院收治的50例抑郁症患者为研究组,并选择同期健康体检的50名志愿者为对照组。通过蒙特利尔认知评估量表(MoCA)、汉密尔顿抑郁量表(HAMD)以及重复性神经心理状态测查评分(RBANS)评估入组者认知功能、抑郁症状与心理状态。检测血清BDNF、皮质醇(CORT)水平。对两组MoCA评分、RBANS评分与血清BDNF、CORT水平进行相关性分析。结果:研究组MoCA总分与RBANS总分明显低于对照组,差异有统计学意义(P均<0.01)。研究组血清BDNF水平明显低于对照组,血清CORT水平明显高于对照组,差异有统计学意义(P均<0.01)。研究组血清BDNF水平与MoCA、RBANS评分呈正相关(P均<0.01)。CORT与MoCA评分、RBANS评分呈负相关(P均<0.01)。结论:抑郁症患者血清BDNF水平明显降低,CORT水平升高,可作为判定认知功能障碍严重程度的参考指标之一。     

脑源性神经营养因子和抑郁症

抑郁症是以显著而持久的情绪低落或心境改变为主要特征的一组精神疾病。其高发病率、致死率、高疾病负担已引起社会各界的关注。然而,由于其发病机制的不详,患者很难获得完全治愈的机会。近年来,国内外研究者发现脑源性神经营养因子可能参与抑郁症的发病和治疗过程。脑源性神经营养因子(Brain-derived neurotrophic factor,BD-NF)在中枢神经系统及周围神经系统的多种神经元均有分布,尤以海马和皮层含量最高。其基因定位于11p13,酪氨酸激酶受体B(tyrosine kinase receptor,TrkB)是其特异性受体,当BDNF与TrkB结合时,受体分子二聚化,其多…     

脑源性神经营养因子与抑郁症的研究进展

海马结构和功能的改变涉及抑郁症的病理生理学过程，海马脑源性神经营养因子表达下调与海马结构和功能的改变密切相关，促进细胞凋亡可能参与慢性应激损伤海马。抗抑郁剂通过调节脑源性神经营养因子的表达逆转海马损伤而发挥治疗作用。     

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...     

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。     

抑郁症患者血清脑源性神经营养因子水平及其相关因素

目的 探讨抑郁症患者血清脑源性神经营养因子水平及其相关因素,为防治抑郁症提供重要依据.方法 采用酶联免疫吸附法和汉密尔顿抑郁量表分别测定40例抑郁症患者(患者组)的血清BDNF水平和抑郁严重程度,并与49名正常者(对照组)进行对比分析.结果 患者组治疗前血清BDNF水平明显降低,与对照组比较差异有统计学意义(P＜0.01).患者组治疗8周末血清BDNF水平明显升高,HAMD总分明显降低,与治疗前比较差异有统计学意义(P＜0.05).患者组治疗前后血清BDNF水平与性别及年龄均呈负相关,差异具有统计学意义(P＜0.05),与受教育程度、病程及HAMD总分比较无统计学意义(P＞0.05).结论 抑郁症患者存在血清BDNF水平的下降,抗抑郁治疗可改善抑郁症状,并显著提高血清BDNF水平.     

脑源性神经营养因子与抑郁症的研究进展

海马结构和功能的改变涉及抑郁症的病理生理学过程 ,海马脑源性神经营养因子表达下调与海马结构和功能的改变密切相关 ,促进细胞凋亡可能参与慢性应激损伤海马。抗抑郁剂通过调节脑源性神经营养因子的表达逆转海马损伤而发挥治疗作用     

男性慢性精神分裂症患者血清脑源性神经营养因子和胶质源性神经营养因子水平及认知功能的对照研究

目的:探讨慢性精神分裂症患者血清脑源性神经营养因子(BDNF)、胶质源性神经营养因子水平(GDNF)和神经认知功能的变化及它们之间关系。方法:入组慢性精神分裂症患者57例和正常对照39名。采用阳性与阴性症状量表(PANSS)评估患者的精神症状。使用酶联免疫吸附法检测血清BDNF、GDNF蛋白水平,采用数字划消测验、连线测验(TMT)、WMS-III空间广度测验(WMS-III SST)、定步调连续加法任务测验(PASAT)、Stroop测验、木块图评估神经认知功能。结果:患者组血清BDNF水平低于对照组,差异有统计学意义(t=9.112,P0.01),患者组血清GDNF与对照组相比差异无统计学意义(t=1.513,P0.05)。患者组数字划消测验、TMT-A、TMT-B、Stroop测验、木块图、WMS-III SST逆行分、PASAT成绩均差于对照组(P0.05)。患者组血清BDNF水平与PANSS阳性症状分、数字划消测验中的错误个数呈负相关(分别为r=-0.295,P=0.026;r=-0.262,P=0.049),血清GDNF水平与Stroop色词干扰测验分呈正相关(r=0.263,P=0.048)。结论:慢性稳定期的精神分裂症患者仍存在广泛的神经认知损害。BDNF可能是精神分裂症的一种素质性标记,可能参与了患者的注意障碍。     

Cognitive functions and serum levels of brain-derived neurotrophic factor in patients with major depressive disorder

Objective

We assessed major cognitive domains in major depressive disorder (MDD) compared to a healthy control group using neurocognitive tests. We hypothesized that lower serum brain-derived neurotrophic factor (BDNF) levels would be associated with poorer neurocognitive performance in patients with major depression and that these associations would be shown in healthy controls as well.

Method

Executive functions, sustaining and focusing of attention, memory functions, and verbal fluency were assessed in this study using the Trail-Making Test (TMT), Stroop Color Word Interference Test-TBAG Form (SCWT), Wisconsin Card Sorting Test (WCST), Test of Variables of Attention (TOVA), Auditory Consonant Trigram test (ACTT), Digit Span subtest of the Wechsler Memory Scale (DST), Rey Auditory Verbal Learning Test (RAVLT), and Controlled Oral Word Association Test (COWAT).

Results

The MDD group showed significantly poorer performance than the control group in cognitive functions; they also had lower levels of BDNF than the control group. However, there was no correlation between cognitive performances and BDNF levels except in the TMT, Part B.

Conclusions

The current understanding of the importance of neurocognitive assessment and related biological markers in depression is improving. Further studies with larger sample sizes evaluating neurocognitive functions with molecular analyses of BDNF levels may reveal a novel marker for predicting and monitoring neurocognitive deficits in depression.     

脑源性神经营养因子基因多态性与重性抑郁障碍认知功能的关系

目的 探讨脑源性神经营养因子(BDNF)基因Va166Met多态性与重性抑郁障碍认知功能的关系.方法 以100例重性抑郁障碍患者(患者组)与100名健康志愿者(对照组)为研究对象,采用1组神经心理学检测评估认知功能,并检测BDNF基因多态性;分别按照总智商(FIQ)、威斯康星卡片分类测验改良版(M-WCST)分类数、正确数、持续错误数、河内塔测试(TOH)计划时间、执行时间及总分的测验成绩由好到差排序,将患者组分为组1(成绩前50例,认知功能较好的患者)和组2(成绩后50例,认知功能较差的患者),检测组1与组2 BDNF基因型频率分布.结果 (1)对照组:除数字广度外,其他神经心理学测验成绩在BDNF基因型间的差异均无统计学意义(P>0.05).(2)患者组:中国修订韦氏成人智力量表(WAIS-RC)FIQ[(102.1±11.5)分vs(92.5±10.2)分]、M-WCST分类数[(5.6±1.7)分vs(2.9±1.2)分]和正确数[(36.5±6.0)分vs(26.8±5.6)分]、TOH总分[(50.8±9.6)分vs(40.4±9.3)分]及各项测验成绩,连线测验(TMT)A耗时数和B耗时数的成绩在患者组Val/Val基因型均优于Met/Met基因型,差异有统计学意义(P均<0.01).(3)组1Met/Met基因型频率分布显著低于组2,差异均有统计学意义(P均<0.01);除FIQ和TOH执行时间外,其他各项组1 Val/Val基因型频率显著高于组2,差异有统计学意义(P均<0.05).结论 BDNF基因Va166Met多态性与重性抑郁障碍患者认知功能损害可能有关.

Abstract：

objective To investigate relationship between brain-derived neurotrophic factor (BDNF)gene Va166Met polymorphism and cognitive function in patients with major depressive disorder.Methods One hundred patients with major depressive disorder and 100 healthy volunteers were included.The cognitive function was assessed by a series of neuropsychology tests,and BDNF gene polymorphism was detected.Results (1)In control group,the achievements of all neuropsychology tests except for digit span were not significantly different among ones with different BDNF genotypes(P>0.05).(2)In patient group,the achievements of neuropsychology tests such as WAIS-RC(102.1±1 1.5 vs.92.5±10.2),M-WCST(5.6±1.7 vs.2.9±1.2,36.5±6.0 vs.26.8±5.6),TOH(50.8±9.6 vs.40.4±9.3),time for TMT-A and TMT-B,were significantly better in ones with Val/Val genotype than in ones with Met/Met genotype(P≤0.01).(3)The Val/Val genotype frequency in patients with better cognitive function was higher than that in patients with worse cognitive function,while Met/Met genotype frequency was in the opposite direction(P<0.05 or P<0.01).Conclusion The BDNF gene Va166Met polymorphism is possibly correlated with impairment of cognitive function in patients with major depressive disorder.     

Reduced serum levels of brain-derived neurotrophic factor in adult male patients with autism

BACKGROUND: The precise mechanisms underlying the pathophysiology of autism are currently unknown. Given the key role of brain-derived neurotrophic factor (BDNF) in brain development, we hypothesized that BDNF may play a role in the pathophysiology of autism. In this study, we studied whether serum levels of BDNF are altered in patients with autism. METHODS: We measured serum levels of BDNF in 18 adult male patients with autism and 18 age-matched healthy male control subjects. RESULTS: The serum levels of BDNF in patients with autism (25.6+/-2.15 ng/ml (mean+/-S.D.)) were significantly (z = -4.42, p < 0.001) lower than those of normal controls (61.6+/-10.9 ng/ml (mean+/-S.D.)). Nevertheless, we found no correlations between BDNF levels and clinical variables in autistic patients. CONCLUSIONS: This study suggests that reduced BDNF levels may play a role in the pathophysiology of autism.     

学习障碍患儿血清BDNF水平的研究

目的探讨学习障碍血清脑源性神经营养因子(BDNF)水平的变化,及其与学习障碍病理基础的关系。方法患者组为22例未治疗过且不共患其他疾病的学习障碍患儿,对照组为16例年龄性别匹配正常儿童,以瑞文标准推理测验(SPM)测定智商,BDNF采用酶联夹心免疫吸附法检测。结果LD患者血清BDNF浓度为:平均(4.603±3.620)ng/ml高于对照组(1.843±0.728)ng/ml(t=3.326,P=0.003<0.01)。边缘智商组(4.523±4.618)ng/ml,与正常对照组比较差异有非常显著性(P=0.008<0.01)。结论学习障碍患儿血清BDNF浓度高于正常儿童,边缘智商者升高更明显。     

Serum levels of brain-derived neurotrophic factor in patients with internet use disorder

Internet use disorder (IUD) is characterised by excessive internet gaming use and has temporarily been conceptualised as a behavioural addiction. Since brain-derived neurotrophic factor (BDNF) has been hypothesised to be involved in the development and maintenance of addictive disorders, we investigated BDNF expression in IUD. We measured BDNF serum levels in male patients with IUD (n=11) and individually matched healthy controls (n=10). There was no significant difference in BDNF serum levels of patients with IUD in comparison to control subjects. Serum levels of BDNF were not correlated with severity of IUD or clinical and demographic variables in our study. These preliminary findings possibly suggest a different underlying pathophysiology in IUD compared to addictive disorders. Thus, further studies are needed to clarify, whether IUD represents an addictive spectrum disorder, an impulse control disorder or finally an individual diagnostic entity that overlaps with both disease categories.     

精神分裂症患者脑源性神经营养因子水平及其与临床症状的关系

目的探讨脑源性神经营养因子（BDNF）在精神分裂症病理生理机制中的可能作用。方法采用横断面病例一对照研究设计。患者组为48例精神分裂症患者，其中发病后从未治疗组31例，停止治疗组17例。正常对照组（以下简称对照组）为与患者组性别、年龄匹配的41名健康人。对患者组用阳性和阴性症状量表（PANSS）评定病情严重程度。血浆BDNF浓度用酶联免疫吸附试验测定。用多变量方差分析比较组间差异。结果从未治疗组[（4．5±2．2）μg/L]和停药组患者[（3．9±1．4）μg/L]血浆BDNF浓度均低于对照组[（6．5±2．2）μg/L]（F检验，P〈0．01）；而从未治疗组与停止治疗组的差异无统计学意义（P〉0．05）。患者组的血浆BDNF浓度与PANSS阴性症状因子分（r=-0．509；P〈0．01）及总病期呈负相关（r=-0．426；P〈0．01），与发病年龄、PANSS阳性因子分、总分的相关性均无统计学差异。结论精神分裂症患者BDNF浓度低于正常；BDNF可能是参与精神分裂症病理生理机制的一种重要物质。     

Serum concentrations of brain-derived neurotrophic factor in patients with gender identity disorder

Gender Identity Disorder (GID) is characterized by a strong and persistent cross-gender identification that affects different aspects of behavior. Brain-derived neurotrophic factor (BDNF) plays a critical role in neurodevelopment and neuroplasticity. Altered BDNF-signaling is thought to contribute to the pathogenesis of psychiatric disordersand is related to traumatic life events. To examine serum BDNF levels, we compared one group of DSM-IV GID patients (n = 45) and one healthy control group (n = 66). Serum BDNF levels were significantly decreased in GID patients (p = 0.013). This data support the hypothesis that the reduction found in serum BDNF levels in GID patients may be related to the psychological abuse that transsexuals are exposed during their life.     

Low serum levels of brain-derived neurotrophic factor and epidermal growth factor in patients with chronic schizophrenia

Neurotrophic factors (NFs) play a pivotal role in the development of the central nervous system. They are thus also suspected of being involved in the etiology of schizophrenia. Previous studies reported a decreased level of serum brain-derived neurotrophic factor (BDNF) in schizophrenia, whereas the association of epidermal growth factor (EGF) with this illness remains controversial. Using a two-site enzyme immunoassay, we conducted the simultaneous measurement of serum BDNF and EGF levels in a group of patients with chronic schizophrenia (N = 74) and a group of normal controls matched in age, body mass index, smoking habit and sex (N = 87). We found that, compared to normal controls, patients with chronic schizophrenia exhibited lower serum levels of both BDNF and EGF across all ages examined (21–59 years). The serum levels of BDNF and EGF were negatively correlated in the controls (r = − 0.387, P = 0.0002) but not in the patients. Clinical parameters such as duration of illness and psychiatric rating scale also showed no robust correlations with the NF levels. Collectively, these results suggest that pervasive, abnormal signaling of NFs underlies the pathophysiology of chronic schizophrenia.     

抑郁发作自杀未遂患者脑源性神经营养因子水平及其相关因素研究

目的 探讨脑源性神经营养因子(BDNF)在抑郁发作自杀未遂者中的可能作用.方法 对抑郁发作自杀未遂患者(自杀未遂组,23例)和抑郁发作无自杀行为患者(无自杀组,24例)采用汉密尔顿抑郁量表(24项,HAMD24)、Beck绝望量表(BHS)和自杀意念自评量表(SIOSS)评定抑郁严重程度、绝望程度及自杀意图的强烈程度;采用酶联免疫吸附法测定其血清BDNF浓度,并与正常对照者(对照组,30名)比较;对自杀未遂组的血清BDNF浓度与各相关因素进行Pearson相关分析.结果 (1)自杀未遂组的HAMD24[(37.8±8.7)分]、BHS[(13.0±3.8)分]及SIOSS评分[(18.1±3.9)分]均高于无自杀组[分别为(26.0±6.0)分、(7.5±4.3)分、(12.0±4.0)分;P<0.01].(2)自杀未遂组的BDNF平均浓度[(57 ±16)ng/L]低于无自杀组[(75 ±28)ng/L;P<0.05],无自杀组的BDNF平均浓度亦低于正常对照组[(111±39)ng/L;P<0.01].(3)自杀未遂组的血清BDNF浓度与抑郁发作的病程(r=-0.541)、BHS总分(r=-0.494)、SIOSS总分(r=-0.754)呈负相关(P<0.01-0.05).结论 低水平的BDNF可能是抑郁发作自杀未遂的一个危险因素.     

Associations between serum brain-derived neurotrophic factor levels and clinical phenotypes in schizophrenia patients

This study investigated serum brain-derived neurotrophic factor (BDNF) protein levels in schizophrenia patients and healthy control subjects and schizophrenia patients with various clinical phenotypes. During a 1-year period, 126 schizophrenic patients and 96 healthy control subjects were recruited. Serum BDNF protein levels were measured using an ELISA Kit. Psychiatric diagnoses were made according to DSM-IV criteria. One-way analysis of variance (ANOVA) showed no significant differences in serum BDNF protein levels between schizophrenia and healthy normals. Additionally, no significant differences existed in BDNF levels between schizophrenia patients for the following variables: with/without a suicide attempt; antipsychotic drug use, family tendency and disease onset before and after 25 years old. However, patients with catatonic schizophrenia had lower serum BDNF protein levels than patients with paranoid or residual schizophrenia. These analytical results suggested that BDNF might play an important role in the clinical subtypes of schizophrenia, but it needed further investigation in future.