ObjectiveTo describe the MR features of Rasmussen encephalitis (RE).Methods The MRI of 10 pathologic confirmed patients (7 male,3 female,mean age 11 ± 4 years) with RE were retrospectively analyzed in this study.Routine axial,sagittal and coronal (perpendicular to the oblique long axis of the hippocampus) scans were obtained for T1WI,T2WI and fluid-attenuated inversion recovery (FLAIR)images. The location and degree of cerebral atrophy,gray matter signal changes,and the evolution of these findings were evaluated. Results Brain atrophy included the enlargement of lateral ventricle(8/10),temporal horn (9/10)and lateral fissure (9/10); widened sulci and small gyri in the isolateral hemisphere (7/10) ; atrophy in caudate and putamen nucleus (6/10).The cortical atrophy was extensive at late stage of the RE,and usually was hemispheric or involved more than two lobes.The signal changes included hyperintensity involving extensive cortical and/or subcortical regions (9/10). The follow-up MR study demonstrated the progression of brain atrophy and extensive signal changes.Conclusions RE usually presents in pediatric patients. The imaging findings included progressive unilateral brain atrophy,enlargement of lateral ventricle,lateral fissure and sulci,and small gyri with or without cortical T2hyperintensity.Deep nucleus atrophy may be involved in RE.

OBJECTIVE:To provide reference for the safe and rational drug use for children. METHODS:Information manage-ment system was used to investigate the use of essential medicines system variety in stock in 2015 and analyze the medication infor-mation for children in the drug instructionsin our hospital in 2015. RESULTS:Only 201 kinds of medicines belonged to children’s medicines in all the 685 kinds of medicines in our hospital. And 89 kinds (44.28%) of medicines belonged to essential medicine system among the 201 kinds of children’s medicines,in which,78 (87.60%) showed complete medication information for chil-dren;112 kinds(55.72%)of medicines belonged to non-essential medicine system,in which,38(33.93%)showed complete medi-cation information for children. The proportions of showing complete medication information for children in the essential medicines and in its chemicals,biological products,injections and oral preparations were higher than non-essential medicines,the differences were statistically significant(P<0.05). Only 41 kinds of medicines belonged to child-specific medicines among the 201 children’s medicines;62 showed complete medication information for children in the 73 kinds of essential medicines among the non-child-spe-cific medicines;only 13 showed complete medication information for children in the 87 kinds of non-essential medicines,the pro-portion of showing complete medication information for children in essential medicines among the non-child-specific medicines was higher than non-essential medicines,the difference was statistically significant(P<0.05). CONCLUSIONS:The use proportion of essential medicine system variety for children’s medicines is high in our hospital;but there are lacking of child-specific medicines and the medication information for children is insufficient. However,compared with non-essential medicines for children,the essen-tial medicines show better medication information for children in aspects of types,dosage form distribution and non-child-specific medicines,and it is suitable for children.

Objective To explore the characteristic of memory impairment and its relationship with Nmethyl-D-aspartate receptor 2B (NR2B) expression in alcohol dependence patients,in order to provide an unprecedented view of alcohol-associated memory impairment therapy.Methods Participants (n=67) included 35 alcohol dependence patients and 32 matched healthy controls.Wechsler memory scale (WMS) was used to access the memory.The expression levels of NR2B were detected with quantitative reverse transcription-polymerase chain reaction (qRT-PCR).Results Compared with the memory quotient(MQ) of controls(69.45±8.96),that of alcohol dependence patients(50.59±8.64) significantly decreased (t=-6.08,P＜0.01).Compared with the NR2B expression level of controls (1.00-0.00),that of alcohol dependence patients (3.52 ± 1.17) significantly increased (t =9.67,P＜0.01).MQ was negatively correlated with the levels of NR2B expression (r=-0.44,P＜0.05).Conclusion Alcohol dependence patients suffer memory impairment detected by WMS,and modulate NR2B expression may improve the memory.

Objective To determine MR manifestations and pathologic types of benign meningiomas and their relationship with tumor recurrence.Methods There were 218 patients (160 females,58 males; age range 4-79 years) with benign meningiomas in the study,including 31 recurrent meningiomas (recurrence group)and 187 primary meningiomas (primary group).All patients were proved by postoperative pathology.Differences of pathological types and MRI manifestations between the recurrence group and the primary group were evaluated by using x2 test and rank sum test.Logistic regression analysis was performed by taking tumor recurrence as the dependent variable,and age,gender,vital structures involvement and pathologic types as independent variables.The recurrent time intervals were compared by rank sum test.Results There were 30 patients with intracranial vital structures involvement or extreintracranial communication tumors in the recurrent group,which was obviously higher than that of the primary group (61 patients).The difference was statistically significant (x2 =57.672,P =0.001).The tumors located in the skull-base and juxtasinus in the recurrent group were obviously more than those in the primary group,and difference was statistically significant (x2 =10.990,P =0.001).Multi-logistic regression analysis showed that the recurrent risk of benign meningiomas was elevated significantly only with vital structure involvement or extre-intracranial communication tumors (wald x2 =31.863,OR =3.820,P =0.001).The recurrent risk of dural sinus involvement was 3.820 times of cerebral artery trunk and cranial nerves involvement,and the risk of the latter was 3.820 times of the non-involved.There was no statistical difference between the two groups in pathology type,location,peritumoral edema,tumor morphology and tumor size.The relapse time of dural sinus involvement and cerebral artery trunk involvement in the recurrent group was 24(13 to 180) and 126(12 to 187) months,respectively.There was significant difference (Z =2.197,P =0.028).Conclusions It is more common that the recurrent benign meningiomas located in the skull base and juxtasinus.The recurrent risk significantly increases when benign meningiomas with vital intracranial structure involved or with extra-intracranial communication tumor.The relapse time of dural sinus involvement is possibly shorter than that of cerebral artery trunk involvement.MRI plays an important role in predicting tumor recurrence and prognosis of benign meningiomas.

Objective To explore what brain regions are modulated by heroin addiction and withdrawal.MethodsWe used functional magnetic resonance imaging to investigate the brain function in 15 heroin-dependent patients 3 days (acute) and 1 month (protracted) after heroin abstinence.Sixteen normal controls were included.Results The blood oxygen level-dependent signal in the orbitofrontal cortex of the brain of heroin-dependent patients was significantly elevated 3 days after the withdrawal.Hyperfunction of the orbitofrontal cortex declined 1 month after the withdrawal.Conclusion Heroin-dependent subjects at both 3 days and 1 month abstinence have persistent abnormalities in the brain function.Although some tangible beneficial effects are noted following 1month of detoxification,possible permanent damage to the brain caused by heroin use is suggested.

Objective To examine white matter integrity in heroin-dependent patients and matched normal controls with diffusion tensor imaging (DTI).Methods The fractional anisotropy was compared between 15 heroin-dependent patients and 15 controls.Results We found the fractional anisotropy was significantly decreased in specific brain regions of the heroin-dependent patients (P ＜ 0.001 uncorrected),including the frontal gyrus,the parietal lobule,the insula,and the corpus callosum.Conclusion The presence of microstructural abnormality is found in the white matter of several brain regions of heroin-dependent patients.

ObjectiveTo investigate the effects of nicotine exposure and ethanol-preferring behavior on mRNA expression of some nAChR subunits in the rat ventral tegmental area(VTA) and to explore possible mechanisms of dependence on tobacco and alcohol.Methods39 male Wistar rats,35-day-old,were randomly divided into an experimental group (group N,n=20) and a control group (group C,n=19).Rats in group N were treated with nicotine ( 1.0 mg · kg -1 · d -1 ) by subcutaneous injection while in group C with saline both for 10 days,after which 6 rats (respectively group NE,n =6,group CE,n =6 )were drawn randomly from each group and killed by cutting off the head.mRNA was extracted from the VTA tissue,and the expression of nAChR subunits,including α4,α5,α7 and β2,were examined by Real Time-PCR.Other rats both in groups N and C ( respectively group NA,n=14,group CA,n=13) were induced for 69 days to establish two-bottle free choice alcohol-preferring behavior model by Samson sucrose fading program from 60-day-old on.The same indexes mentioned above were detected by the same methods in the VTA tissue.Results① The factor analysis showed that both the two factors,nicotine and alcohol-preferring behavior,showed regulating effects on the expression of nAChR subunits α4 and α5 ( respectively F was 6.13,5.407,5.186,7.132,P ＜ 0.05 ),and the factor,alcohol-preferring behavior,on subunit β2 (F =5.896,P＜0.05) ; the two factors exhibited strong interaction on the expression of subunit α7 (F=13.894,P＜0.001 ),and some interaction on subunits α5 and β2 (respectively F was 6.149,4.222,P＜0.05 ).② The mRNA expression of nAChR subunits α4,α5,α7,and β2 were significantly up-regulated by different degrees in group NA compared to group CA ( respectively Fwas 7.941,13.517,17.438,9.272,respectively P ＜ 0.05,P ＜ 0.05,P ＜ 0.01,P ＜ 0.01 ),the expression level of subunits α4,α5,α7 and β2 were significantly higher in different degrees in group NA than in group NE( respectively F was 5.293,8.500,6.149,4.837,P ＜0.05) ; while subunit α7 was significantly down-regulated in group CA compared to group CE (F =12.750,P ＜0.01 ).ConclusionNicotine and ethanol co-affect on the nAChR subtype comprised of subunits α4,α5,α7 and β2.

OBJECTIVE: To explore the attitudes of medical students toward psychiatry. METHODS: A total of 254 fourth-year medical students were investigated with a 29-item questionnaire. RESULTS: Although in general, medical school students showed a positive attitude towards psychiatry, opinions about certain aspects like the reputation of psychiatry and the attitude toward psychiatric therapy were not positive. CONCLUSION There are still some misunderstandings for psychiatry among medical school students, some of which are based on false beliefs that should be actively targeted for remediation.
Attitude of Health Personnel ; Career Choice ; China ; Female ; Humans ; Male ; Psychiatry ; education ; Specialization ; Students, Medical ; psychology ; Surveys and Questionnaires ; Young Adult

The self-renewal and multipotent potentials in neural stem cells (NSCs) maintain the normal physiological functions of central nervous system (CNS). The abnormal differentiation of NSCs would lead to CNS disorders. However, the mechanisms of how NSCs differentiate into astrocytes, oligodendrocytes (OLs) and neurons are still unclear, which is mainly due to the complexity of differentiation processes and the limitation of the cell separation method. In this study, we modeled the dynamics of neural cell interactions in a systemic approach by mining the high-throughput genomic and proteomic data, and identified 8615 genes that are involved in various biological processes and functions with significant changes during the differentiation processes. A total of 1559 genes are specifically expressed in neural cells, in which 242 genes are NSC specific, 215 are astrocyte specific, 551 are OL specific, and 563 are neuron specific. In addition, we proposed 57 transcriptional regulators specifically expressed in NSCs may play essential roles in the development courses. These findings provide more comprehensive analysis for better understanding the endogenous mechanisms of NSC fate determination.
Animals ; Astrocytes ; cytology ; metabolism ; Cell Differentiation ; genetics ; Gene Expression Profiling ; Gene Regulatory Networks ; Mice ; Neural Stem Cells ; cytology ; metabolism ; Oligodendroglia ; cytology ; metabolism ; Protein Interaction Mapping

OBJECTIVE:To investigate the utilization and trend of endocrine therapeutic drugs after breast cancer surgery,and to provide reference for rational drug use in clinic. METHODS:In retrospective study,the data of endocrine therapeutic drugs use in outpatients after breast cancer in a Third Grade Class A Hospital during 2014-2016 was calculated,sorted and analyzed statistically. RESULTS:The age of outpatients receiving endocrine therapy after breast cancer ranged from ＞40 to 60. Among endocrine therapeutic drugs used within 3 years,3 kinds of them were aromatase inhibitor(AI),3 kinds were anti-estrogen and 2 kinds were gonadotropin releasing hormone(GnRH)analogues. The amount of Toremifene citrate tablets(imported)in prescription was much more than the others. The proportion of anti-estrogen drugs alone in prescription was the highest(81.11%). The AI and GnRH analogues were mostly used in drug combination prescription,and commonly combined with anti-osteoporosis drugs. The comsuption sum of endocrine therapeutic drugs was increased year by year,increasing by 52.48% in 2015,40.60% in 2016. The consumption sum of AI ranked the highest proportion among three categories of endocrine drugs(44.71%,48.62%,48.62%,each year respectively). The consumption sum of imported drugs was significantly higher than that of domestic drugs. The consumption sum of Toremifene citrate tablets(imported)increased continuously in 3 years,and took the first place in 2016. The consumption sum of Leuprorelin acetate microspheres for injection(imported)had the largest growth rate when applied to the clinic. Top types in the list of DDC were all imported types;Fulvestrant injection(imported)ranked top 1,and Tamoxifen citrate tablet(domestic) was the bottom of the list. DDDs of endocrine therapeutic drugs also increased year by year,among which Toremifene citrate tablets,Tamoxifen citrate tablets,Anastrozole tablets and Letrozol tablets ranked top 4 places during the 3 years,while Tamoxifen citrate tablets DDDs decreased year by year. B/A values of these drugs were between 0.25 and 9.00. B/A values of domestic varieties were basically more than or equal to 1,of which Tamoxifen citrate tablets was the largest;B/A values of the imported varieties were basically less than or equal to 1. CONCLUSIONS:The consumption sum of endocrine therapeutic drugs after breast cancer surgery increased year by year in 3 years,and DDDs is also increasing year by year. The imported drugs took up the dominant place. Toromiphene citrate tablets had replaced Tamoxifen citrate tablets as the first choice of endocrine therapeutic drugs in the hospital. The frequency of AI and GnRH analogues use had also increased. And the combination of 2 kinds of endocrine therapeutic drugs and endocrine therapeutic drugs combined with anti-osteoporosis drug had become a trend of clinical treatment. The choice of therapeutic drugs should take into account of effectiveness,safety,economics,cost and therapeutic efficacy,so as to guarantee the greatest benefit of the patient.