Resting-state beta and gamma activity in Internet addiction

Internet addiction is the inability to control one's use of the Internet and is related to impulsivity. Although a few studies have examined neurophysiological activity as individuals with Internet addiction engage in cognitive processing, no information on spontaneous EEG activity in the eyes-closed resting-state is available. We investigated resting-state EEG activities in beta and gamma bands and examined their relationships with impulsivity among individuals with Internet addiction and healthy controls. Twenty-one drug-naïve patients with Internet addiction (age: 23.33 ± 3.50 years) and 20 age-, sex-, and IQ-matched healthy controls (age: 22.40 ± 2.33 years) were enrolled in this study. Severity of Internet addiction was identified by the total score on Young's Internet Addiction Test. Impulsivity was measured with the Barratt Impulsiveness Scale-11 and a stop-signal task. Resting-state EEG during eyes closed was recorded, and the absolute/relative power of beta and gamma bands was analyzed. The Internet addiction group showed high impulsivity and impaired inhibitory control. The generalized estimating equation showed that the Internet-addiction group showed lower absolute power on the beta band than did the control group (estimate = − 3.370, p < 0.01). On the other hand, the Internet-addiction group showed higher absolute power on the gamma band than did the control group (estimate = 0.434, p < 0.01). These EEG activities were significantly associated with the severity of Internet addiction as well as with the extent of impulsivity. The present study suggests that resting-state fast-wave brain activity is related to the impulsivity characterizing Internet addiction. These differences may be neurobiological markers for the pathophysiology of Internet addiction.     

ADAPT技术治疗急性大血管闭塞性卒中

目的探讨使用直接抽吸首次通过技术(a direct aspiration first-pass technique,ADAPT)治疗急性大血管闭塞性卒中的安全性和有效性。方法回顾性分析12例采用ADAPT技术治疗急性大血管闭塞性卒中病人的临床资料。应用脑梗死溶栓(thrombolysis in cerebral infarction,TICI)分级评估闭塞血管再通情况,美国国立卫生研究院卒中量表(National Institute of Health Stroke Scale,NIHSS)评分评估病人的神经功能缺失情况。术后90 d进行随访,采用改良Rankin量表(modified Rankin Scale,mRS)评分评估病人的独立生活情况。结果本组平均使用ADAPT(2.0±1.8)次,发病至股动脉穿刺的平均间隔时间(360.8±170.9)min,股动脉穿刺至血管再通平均时间(133.1±43.2)min。术后即刻获得有效再通(TICI 2b~3级)11例,其中TICI 3级7例,2b级4例;TICI 2a级1例。手术前后NIHSS评分差异有统计学意义(P<0.05)。死亡2例。10例病人术后90 d随访mRS评分1分5例,3分2例,4分1例,5分2例。结论ADAPT技术治疗急性大血管闭塞性卒中安全、有效。     

Role of DISC1 Interacting Proteins in Schizophrenia Risk from Genome‐Wide Analysis of Missense SNPs

A balanced translocation affecting DISC1 cosegregates with several psychiatric disorders, including schizophrenia, in a Scottish family. DISC1 is a hub protein of a network of protein–protein interactions involved in multiple developmental pathways within the brain. Gene set‐based analysis has been proposed as an alternative to individual analysis of single nucleotide polymorphisms (SNPs) to get information from genome‐wide association studies. In this work, we tested for an overrepresentation of the DISC1 interacting proteins within the top results of our ranked list of genes based on our previous genome‐wide association study of missense SNPs in schizophrenia. Our data set consisted of 5100 common missense SNPs genotyped in 476 schizophrenic patients and 447 control subjects from Galicia, NW Spain. We used a modification of the Gene Set Enrichment Analysis adapted for SNPs, as implemented in the GenGen software. The analysis detected an overrepresentation of the DISC1 interacting proteins (permuted P‐value = 0.0158), indicative of the role of this gene set in schizophrenia risk. We identified seven leading‐edge genes, MACF1, UTRN, DST, DISC1, KIF3A, SYNE1, and AKAP9, responsible for the overrepresentation. These genes are involved in neuronal cytoskeleton organization and intracellular transport through the microtubule cytoskeleton, suggesting that these processes may be impaired in schizophrenia.     

慢性难愈合创面早期防控体系建设探索

【摘要】 北大医疗鲁中医院烧伤皮肤外科在烧伤患者逐渐减少, 科室被压缩?合并的情况下, 受付小兵院士 “战时治烧伤, 平时治创面” 理念的启发, 于 2015 年成立烧伤与创面修复中心, 在淄博市开展了以慢性难愈合创面为主的创面诊疗工作, 通过普及创面修复知识, 开展居家照护? 多学科诊疗? 医护一体的工作模式, 建立创面修复移动工作站, 筹建精准扶贫基地, 成立创面修复专业委员会和创面修复专科联盟等组织开展学术交流, 使科室逐渐发展壮大, 走向了可持续发展之路? 本研究主要结合淄博市创面修复学科建设总结该学科的建设经验, 以期能够给予正在建设以及准备建设该学科的医疗机构提供借鉴?     

Higher midlife CAIDE score is associated with increased brain atrophy in a cohort of cognitively healthy middle-aged individuals

Journal of Neurology - Structural brain changes associated with Alzheimer’s disease (AD) can occur decades before the onset of symptoms. The Cardiovascular Risk Factors, Aging, and Dementia...     

Differential Association of Adiposity Measures with Heart Rate Variability Measures in Koreans

Purpose

Although obesity has been associated with imbalances in cardiac autonomic nervous system, it is unclear whether there are differential relationships between adiposity measures and heart rate variability (HRV) measures. We aimed to examine differences in the relationship between adiposity measures and HRV indices in a healthy Korean population.

Materials and Methods

In all, 1409 non-smokers (811 males, 598 females) without known histories of cardiovascular (CV), endocrine, or neurological diseases underwent adiposity measurements [(body mass index (BMI), percentage of body fat mass (PBF), and waist-to-hip ratio (WHR)], the HRV assessment (SDNN, RMSSD, LF, HF, LF/HF, and pNN50), and examination for CV risk factors (fasting glucose, LDL-cholesterol, HDL-cholesterol, triglycerides, hs-CRP, and blood pressure).

Results

Compared with BMI and PBF, WHR was more strongly correlated with each HRV index and more likely to predict decreased HRV (<15 percentile vs. ≥15 percentile of each HRV index) in ROC curves analysis. In linear regression analysis, all adiposity measures were inversely associated with each HRV measure before adjusting for age, gender, and CV risk factors (p<0.05). After adjusting for the covariates, WHR was inversely related to RMSSD, LF, and pNN50; PBF with RMSSD, HF, and pNN50; BMI with RMSSD (p<0.05). The inversed association between HRV indices and the gender-specific WHR tertile was significant for subjects with BMI ≥25 kg/m², but not for those with BMI <25 kg/m².

Conclusion

WHR and PBF appear to be better indicators for low HRV than BMI, and the association between abdominal adiposity and HRV may be stronger in overweight subjects.     

Sequence analysis of the whole genome of a recombinant Marek’s disease virus strain, GX0101, with a reticuloendotheliosis virus LTR insert

Marek’s disease virus Chinese strain GX0101, isolated in 2001, is the first reported recombinant gallid herpesvirus type 2 (GaHV-2) field strain with one reticuloendotheliosis virus (REV) long terminal repeat (LTR) insert. We constructed an infectious bacterial artificial chromosome (BAC) clone of GX0101, which showed characteristics very similar to those of the parental virus in replication and pathogenicity. Using the GX0101 BAC clone, the complete genome of GX0101 was sequenced and analyzed. The length of the GX0101 genome is 178,101 bp, and it contains only one REV-LTR insert at a site 267 bp upstream of the sorf2 gene.     

Impact of Environmental Factors on Efficacy of Glucocorticoids in Chinese Population with Systemic Lupus Erythematosus

Although glucocorticoids (GCs) are effective in inducing remission in systemic lupus erythematosus (SLE) patients, there is a significant variation in response to therapeutic GCs, and some patients do not achieve full remission. The aim of this study was to explore the impact of environmental factors on the efficacy of GCs in a Chinese population with SLE. This was a prospective cohort study, and a total of 260 SLE patients treated with GCs (prednisone) were followed up for 12 weeks. The efficacy of GCs was measured with the scores on SLE disease activity index. Environmental factors were collected using a questionnaire. Single-variable analysis and multivariate logistic regression analysis were used to discriminate the impact of environmental factors on the efficacy of GCs. Two hundred forty-seven patients (95.00 %) completed the 12-week follow-up. Among these patients, 131 (53.04 %) were classified into sensitive group and 116 (46.96 %) were classified into insensitive group. Results from logistic analysis showed that the following environmental factors were significantly associated with decreased efficacy of GCs: high salt intake (OR?=?3.464, 95%CI?=?1.481–8.102, P?=?0.004), introverted personality (OR?=?3.550, 95%CI?=?1.901–6.628, P?<?0.0001), experience with negative life events (OR?=?5.526, 95%CI?=?1.612–18.946, P?=?0.007), and history of allergy (OR?=?2.966, 95%CI?=?1.312–6.704, P?=?0.009). These results indicate that environmental factors, including salt intake, personality, experience with negative life events, and history of allergy, may play an important role in the efficacy of GCs in the Chinese population with SLE.