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1.
Sci Data ; 11(1): 759, 2024 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-38992082

RESUMO

Low-carbon development of ordinary Portland cement industry is of great significance to China's target "to peak carbon dioxide emissions before 2030 and to achieve carbon neutrality before 2060". Neglecting the regional heterogeneity in China, few studies emphasized the status and developments of energy intensity and CO2 emissions of ordinary Portland cement industry in Guizhou of Southwest China. To bridge this knowledge gap, we present an annual intensity dataset of energy and CO2 emissions at plant-level for Guizhou's ordinary Portland cement industry, which involves the details of clinker rotary kilns, yearly production of clinker and cement products, fuel consumption and electricity consumption, total CO2 emission of cement products, energy intensity indicators of clinker and cement products, utilization ratio of solid-waste in clinker and cement production, and CO2 emission factors of cement products. It is an important supplement and to existing energy intensity and CO2 emissions estimates at plant-level and provincial official emissions inventories that converges all regions of China.

2.
J Coll Physicians Surg Pak ; 33(8): 861-865, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37553923

RESUMO

OBJECTIVE:  To investigate whether plasma trimethylamine N-oxide (TMAO) levels might predict early neurological deterioration (END) in individuals with acute ischemic stroke. STUDY DESIGN: Cohort study. Place and Duration of the Study: Jiulongpo District Hospital of Traditional Chinese Medicine, Chongqing City, China, from January 2020 to December 2021. METHODOLOGY:  Patients presenting with ischemic stroke were classified into the END group and the non-END group. The National Institutes of Health Stroke Scale (NIHSS) total increasing by 2 points or more within 72 hours of admission was the definition of the END. Plasma TMAO levels were determined by high-performance liquid chromatographic and tandem mass spectrometry. RESULTS:  Twenty-six (25%) of the 104 patients, diagnosed with END exhibited higher TMAO levels after admission (median 1.438 vs. 0.449 nmol/mL, p=0.001). Elevated plasma TMAO levels were significant predictors of END in univariate logistic analysis. After controlling for age, gender, and cardiovascular risk factors in the multivariate conditional logistic regression model, the plasma TMAO levels in the END group remained significantly higher than those in the non-END group (OR=6.646, 95% CI 2.434-18.147, p<0.001). In receiver operator characteristic (ROC) analysis, the sensitivity and specificity of TMAO in distinguishing the END group and the non-END group at 0.564 nmol/mL cutoff value were 0.885 and 0.679, respectively. CONCLUSION: According to this research, the development of END on admission in patients with acute ischemic stroke may be positively correlated with the elevation in plasma TMAO levels. KEY WORDS:  Trimethylamine N-oxide level, Acute ischemic stroke, Early neurological deterioration, NIHSS score.


Assuntos
Isquemia Encefálica , AVC Isquêmico , Acidente Vascular Cerebral , Estados Unidos , Humanos , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/diagnóstico , Isquemia Encefálica/complicações , Isquemia Encefálica/diagnóstico , Estudos de Coortes , Biomarcadores
3.
Am J Transl Res ; 15(5): 3267-3278, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37303654

RESUMO

OBJECTIVE: To assess the effectiveness of susceptibility-weighted imaging (SWI) in displaying the superior petrosal vein complex (SPVC) and the role of venous three-dimensional (3D) reconstruction in visualizing the anatomical relationship in patients with trigeminal neuralgia (TN). METHODS: A total of 30 patients with primary TN who received treatment between September 2019 and December 2020 were enrolled prospectively in this study. All patients were examined with fast imaging employing steady-state acquisition (Fiesta), three-dimensional time of flight (3D-TOF) and SWI by the same technician. Image analysis was performed by 2 physicians. 3D reconstruction of nerves, arteries, and veins was performed with 3dslicer and compared with intraoperative findings. The general characteristics, vein description in MRI, and the composition of SPVC types were also compared. RESULTS: The display effect of SPVC in SWI was significantly better than that in Fiesta and 3D-TOF (P < 0.05). The display effect of phase images was found to be superior to magnitude images (P < 0.05). The superior petrosal vein, pontotrigeminal vein, transverse pontine vein, and vein of the cerebellopontine fissure were clearly displayed in SWI. The anatomical relationship between SPVC and trigeminal nerve shown by 3D reconstruction of the vein was consistent with the findings observed during the operation. CONCLUSION: The SPVC can be clearly displayed by SWI. 3D reconstruction of the vein can accurately display the anatomical relationship between the trigeminal nerve and SPVC.

4.
Cell Rep ; 38(10): 110459, 2022 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-35263580

RESUMO

Biological age (BA) has been proposed to evaluate the aging status instead of chronological age (CA). Our study shows evidence that there might be multiple "clocks" within the whole-body system: systemic aging drivers/clocks overlaid with organ/tissue-specific counterparts. We utilize multi-omics data, including clinical tests, immune repertoire, targeted metabolomic molecules, gut microbiomes, physical fitness examinations, and facial skin examinations, to estimate the BA of different organs (e.g., liver, kidney) and systems (immune and metabolic system). The aging rates of organs/systems are diverse. People's aging patterns are different. We also demonstrate several applications of organs/systems BA in two independent datasets. Mortality predictions are compared among organs' BA in the dataset of the United States National Health and Nutrition Examination Survey. Polygenic risk score of BAs constructed in the Chinese Longitudinal Healthy Longevity Survey cohort can predict the possibility of becoming centenarian.


Assuntos
Envelhecimento , Longevidade , Idoso de 80 Anos ou mais , Humanos , Estudos Longitudinais , Metabolômica , Inquéritos Nutricionais
5.
Cancer Cell Int ; 21(1): 27, 2021 Jan 07.
Artigo em Inglês | MEDLINE | ID: mdl-33413401

RESUMO

BACKGROUND: Increasing studies have revealed that circular RNAs (CircRNAs) make great contributions to regulating tumor progression. Therefore, we intended to explore the expression characteristics, function, and related mechanisms of a novel type of circRNA, PIP5K1A, in glioma. METHODS: Firstly, reverse transcription-polymerase chain reaction (RT-PCR) was carried out to examine CircPIP5K1A expression in glioma tissues and adjacent normal tissues, and the correlation between CircPIP5K1A level and the clinical-pathological indicators of glioma was analyzed. Then, the CircPIP5K1A expression in various glioma cell lines was detected, and CircPIP5K1A overexpression and knockdown cell models were constructed. Subsequently, cell proliferation and viability were detected by the CCK8 method and BrdU staining. Cell apoptosis was detected by flow cytometry, and cell invasion was examined by Transwell assay. The expression of TCF12, PI3K/AKT pathway apoptotic related proteins (Caspase3, Bax, and Bcl2) and epithelial-mesenchymal transition (EMT) markers (E-cadherin, Vimentin, and N-cadherin) was determined by western blot or RT-PCR. RESULTS: The results manifested that CircPIP5K1A was upregulated in glioma tissues (compared with that in normal adjacent tissues), and overexpressed CircPIP5K1A was related to glioma volume and histopathological grade. Functionally, overexpressing CircPIP5K1A notably elevated glioma cell proliferation, invasion, and EMT and inhibited apoptosis both in vivo and in vitro. Besides, CircPIP5K1A upregulated TCF12 and PI3K/AKT activation. Bioinformatics analysis testified that miR-515-5p was a common target of CircPIP5K1A and TCF12, while the dual-luciferase reporter assay and RNA immunoprecipitation (RIP) experiment further confirmed that CircPIP5K1A targeted miR-515-5p, which bound the 3'-untranslated region (UTR) of TCF12. CONCLUSIONS: Overall, the study illustrated that CircPIP5K1A is a potential prognostic marker in glioma and regulates glioma evolvement by modulating the miR-515-5p-mediated TCF12/PI3K/AKT axis.

6.
Oncol Lett ; 15(4): 5131-5136, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29552147

RESUMO

Glioblastoma multiforme (GBM) is a prevalent and aggressive disease, and the development of a novel therapy to better treat advanced GBM is urgently required. Lactate dehydrogenase A (LDHA), which functions as a key enzyme in transforming pyruvate into lactate, has attracted more attention in recent years due to its critical role in various types of advanced cancer. Previous data derived from the Oncomine database have shown that the expression of LDHA is higher in GBM tissues than that in corresponding normal control tissues. However, the association of LDHA levels with glioma clinical grades and the possible mechanisms of LDHA in GBM progression have not been investigated. The present study showed that there is a significant positive correlation between LDHA expression levels and tumor clinical stages. The knockdown of LDHA inhibited cell growth by inhibiting cell cycle progression and inducing apoptosis in glioma cell lines. Upon investigating the molecular mechanism, LDHA knockdown via siRNA treatment was associated with decreased cyclin D1 expression, increased cleavage of PARP, and altered B-cell lymphoma 2 and B-cell lymphoma 2-associated protein X expression. In addition, LDHA knockdown led to the marked downregulation of matrix metalloproteinase (MMP)-2, MMP-9, VE-Cadherin and vascular endothelial growth factor expression levels. Furthermore, knock down of LDHA enhanced the chemosensitivity of glioma cells to temozolomide (TMZ), a second-generation alkylating agent with activity against recurrent high-grade glioma. These findings support LDHA as a novel target for developing effective therapeutic strategies to treat GBM.

7.
Clin EEG Neurosci ; 48(4): 301-303, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27821481

RESUMO

Electroencephalogram (EEG) abnormalities are very common in anti- N-methyl-d-aspartate receptor (anti-NMDAR) encephalitis. Extreme delta brush (EDB) is a distinctive EEG pattern that is can be suggestive of the diagnosis; however, the etiology of the EDB remains unclear. Furthermore, there is question with regard to its ictal or interictal nature. We report a 20-year-old woman with anti-NMDAR encephalitis whose serial video-EEG monitoring was obtained at 2, 2.5, 4, and 6 months after admission. There was a long-standing EDB lasting up to several hours, with no evolution in frequency, amplitude, or morphology, and without clear association her frequent orofacial dyskinesia. Intravenous benzodiazepine administrations did not change the EDB pattern. As her clinical symptoms improved, the EDB gradually became less prominent and less frequent, with complete resolution at 6 months after admission. These findings suggest that EDB is more likely a marker of the severity of the disease in contrast to an epileptic seizure and is useful for diagnosis and monitoring of treatment response in conjunction with clinical improvement.


Assuntos
Encefalite Antirreceptor de N-Metil-D-Aspartato/diagnóstico por imagem , Encefalite Antirreceptor de N-Metil-D-Aspartato/tratamento farmacológico , Anticonvulsivantes/uso terapêutico , Mapeamento Encefálico/métodos , Diagnóstico por Computador/métodos , Monitoramento de Medicamentos/métodos , Eletroencefalografia/efeitos dos fármacos , Eletroencefalografia/métodos , Feminino , Humanos , Estudos Longitudinais , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Fator 6 Associado a Receptor de TNF , Resultado do Tratamento , Adulto Jovem
8.
Neuropsychology ; 30(6): 673-84, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-26986747

RESUMO

OBJECTIVE: Individuals with schizophrenia have been found to exhibit emotion-behavior decoupling, particularly with respect to anticipated, rather than experienced events. However, previous research has focused on how emotion valence translates into motivated behavior, ignoring the fact that emotion arousal should also modulate emotion-behavior coupling. Few studies have examined emotion-behavior coupling in prepsychotic conditions. This investigation aimed to examine the nature and extent of emotion valence- and arousal-behavior coupling across the schizophrenia spectrum. METHOD: We examine how emotional valence and arousal couple with behavior in 3 groups of individuals (25 individuals with chronic schizophrenia; 27 individuals early in the disease course, and 31 individuals reporting negative schizotypal symptoms). Participants completed a task using slides to elicit emotion and evoke motivated behavior. We compared participants with their respective matched control groups to determine differences in the correspondence between self-reported emotion valence/arousal and motivated behavior. RESULTS: Both groups with schizophrenia reported similar affective experiences as their controls, whereas individuals reporting negative schizotypal symptoms showed "in-the-moment" anhedonia but not emotion-behavior decoupling. In addition, the schizophrenia groups' affective experiences corresponded less well to their behavior relative to controls. CONCLUSIONS: Our findings suggest emotion-behavior decoupling along both valence and arousal dimensions in schizophrenia but not in participants with high levels of schizotypal symptoms. Findings appear to support the idea that emotion-behavior decoupling differs in nature and extent across the schizophrenia spectrum. Interventions to recouple emotion and behavior may be particularly helpful in allowing people with schizophrenia to gain functional independence. (PsycINFO Database Record


Assuntos
Anedonia/fisiologia , Emoções/fisiologia , Motivação/fisiologia , Esquizofrenia/fisiopatologia , Transtorno da Personalidade Esquizotípica/fisiopatologia , Adulto , Antecipação Psicológica/fisiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prazer/fisiologia
9.
Psychiatry Res ; 228(1): 166-9, 2015 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-25920805

RESUMO

Little is known about subjective pleasure experience in recent-onset schizophrenia, and its relationship with neurocognitive functions. Twenty-seven recent-onset schizophrenia people and 26 controls completed the TEPS and neuropsychological tests. The results showed that schizophrenia people self-reported less anticipatory pleasure than controls. Semantic verbal fluency was apparently correlated with anticipatory pleasure.


Assuntos
Anedonia/fisiologia , Prazer/fisiologia , Esquizofrenia/fisiopatologia , Psicologia do Esquizofrênico , Adolescente , Adulto , Feminino , Humanos , Masculino , Adulto Jovem
10.
Anticancer Res ; 34(1): 531-6, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24403512

RESUMO

AIM: To evaluate the in vitro cytotoxicity of oxoglaucine (OG) complexes: [Sm(OG)2(NO3)3]•H2O (1), [Eu(OG)2(NO3)3]•1.5CH3OH (2) and [Er(OG)2(NO3)3]•H2O (3) through comparison to oxoglaucine and lanthanide salts. MATERIALS AND METHODS: The reactions of OG with corresponding lanthanide salts gave rise to complexes 1-3. The crystal structures of complexes 1-3 were determined by single-crystal X-ray diffraction analysis. The in vitro cytotoxicity of oxoglaucine and complexes 1-3 against five human cancer cell lines were evaluated by the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl tetrazolium Bromide (MTT) method. RESULTS: Complexes 1-3 have similar mononuclear structures. The 50% inhibitory concentration (IC50) of complex 1 against SGC7901 cells was 32.1 µM; that of complex 2 against MCF-7 cells was 3.2 µM; those of complex 3 on HeLa and MCF-7 cells were 8.3 and 1.4 µM, respectively. CONCLUSION: The three OG-lanthanide complexes exhibited significantly enhanced cytotoxicity vs. OG and corresponding lanthanide salts.


Assuntos
Apomorfina/análogos & derivados , Apoptose/efeitos dos fármacos , Elementos da Série dos Lantanídeos/química , Elementos da Série dos Lantanídeos/farmacologia , Neoplasias/tratamento farmacológico , Apomorfina/química , Apomorfina/farmacologia , Cristalografia por Raios X , Humanos , Concentração Inibidora 50 , Modelos Moleculares , Neoplasias/patologia , Células Tumorais Cultivadas
12.
PLoS One ; 8(5): e61115, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23690922

RESUMO

OBJECTIVES: The First Episode Social Functioning Scale (FESFS) was designed to measure social functioning of young individuals with schizophrenia. The aim of this study was to validate a Chinese version of the FESFS in a sample of young Chinese adults. METHOD: The FESFS was translated to Chinese prior to being administered to 1576 college students. The factor structure, reliability, and validity of the scale were examined. RESULTS: Two items were deleted after item analysis and the internal consistency of the whole scale was .89. A six-factor structure was derived by exploratory factor analysis. The factors were interpersonal, family and friends, school, living skills, intimacy, and balance. Estimates of the structural equation model supported this structure, with Goodness of Fit Chi-Square χ(2) = 1097.53 (p<0.0001), the root mean square error of approximation (RMSEA) = 0.058, and the comparative fit index (CFI) = 0.93. Scale validity was supported by significant correlations between social functioning factors scores and schizophrenia personality questionnaire (SPQ) scores. Individuals with schizotypal personality features presented poorer social functioning than those without schizotypal personality features. CONCLUSIONS: The Chinese revised version of the FESFS was found to have good psychometric properties and could be used in the future to examine social functioning in Chinese college students.


Assuntos
Povo Asiático , Transtorno da Personalidade Esquizotípica/psicologia , Comportamento Social , Estudantes/psicologia , Universidades , Adolescente , Feminino , Humanos , Masculino , Determinação da Personalidade , Reprodutibilidade dos Testes , Transtorno da Personalidade Esquizotípica/diagnóstico , Inquéritos e Questionários
13.
PLoS One ; 7(5): e34147, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22615731

RESUMO

Difficulties in feeling pleasure and expressing emotions are one of the key features of schizophrenia spectrum conditions, and are significant contributors to constricted interpersonal interactions. The current study examined the experience of pleasure and emotional expression in college students who demonstrated high and low levels of schizotypal personality disorder (SPD) traits on self-report questionnaires. One hundred and seventeen subjects with SPD traits and 116 comparison controls were recruited to participate. Cluster analyses conducted in the SPD group identified negative SPD and positive SPD subgroups. The negative SPD group exhibited deficient emotional expression and anticipatory pleasure, but showed intact consummatory pleasure. The positive SPD group reported significantly greater levels of anticipatory, consummatory and total pleasure compared to the control group. Both SPD groups reported significantly more problems in everyday memory and greater levels of depressive and anxiety-related symptoms.


Assuntos
Emoções , Transtorno da Personalidade Esquizotípica/psicologia , Adolescente , Adulto , Estudos de Casos e Controles , Análise por Conglomerados , Feminino , Humanos , Masculino , Adulto Jovem
14.
PLoS One ; 7(4): e35352, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22530007

RESUMO

BACKGROUND: The Temporal Experience of Pleasure Scale (TEPS) is a measure specifically designed to capture the anticipatory and consummatory facets of pleasure. However, few studies have examined the structure of the measure in non-Western samples. The current study aimed to evaluate the factor structure and psychometric properties of the TEPS in a Chinese sample. METHODS: We administered the Chinese version of the TEPS to 2275 healthy Chinese college students. They were randomly split into two sub-samples. The first sub-sample was used for exploratory factor analysis (EFA) to examine the structure of the TEPS in a Chinese sample. The second sub-sample was used as a validation sample for the identified structure from the EFA and confirmatory factor analysis (CFA) was adopted. RESULTS: Results of the EFA suggested a four-factor model (consummatory contextual, consummatory abstract, anticipatory contextual, and anticipatory abstract factors) instead of the original two-factor model (consummatory and anticipatory factors) ascertained from Western samples in the United States. The CFA results confirmed these results in the second sub-sample. Internal consistency and test-retest stability of the TEPS factors were good. CONCLUSIONS: The TEPS has four factors among Chinese participants. Possible reasons for cultural difference and potential applications of the TEPS for cross-cultural comparison are discussed.


Assuntos
Povo Asiático/psicologia , Prazer , Adolescente , Adulto , China , Comparação Transcultural , Análise Fatorial , Feminino , Humanos , Masculino , Psicometria , Inquéritos e Questionários , Adulto Jovem
15.
J Neurosurg Pediatr ; 9(3): 301-4, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22380959

RESUMO

The authors describe a rare case of a pediatric patient with focal inhibitory motor seizures (ictal paralysis) with the seizure focus in the primary motor cortex. Seizures were characterized by ictal paralysis of the contralateral limbs without loss of consciousness. The seizure focus and progression were examined using long-term video electroencephalography (EEG) monitoring and MR imaging. Invasive recordings of the ictal EEG revealed spike rhythms arising from the primary motor cortex, suggesting that seizures associated with paralysis can arise from hyperactivity in either positive or negative motor areas. Resection of the cortical area related to ictal onset resulted in a seizure-free status for the last 3 years.


Assuntos
Epilepsia Motora Parcial/diagnóstico , Epilepsia Motora Parcial/cirurgia , Córtex Motor , Criança , Eletroencefalografia , Epilepsia Motora Parcial/fisiopatologia , Feminino , Humanos
16.
Inorg Chem ; 51(4): 1998-2009, 2012 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-22309171

RESUMO

The alkaloid oxoglaucine (OG), which is a bioactive component from traditional Chinese medicine (TCM), was synthesized by a two-step reaction and used as the ligand to react with transition metal salts to give four complexes: [OGH][AuCl(4)]·DMSO (1), [Zn(OG)(2)(H(2)O)(2)](NO(3))(2) (2), [Co(OG)(2)(H(2)O)(2)](ClO(4))(2) (3), and [Mn(OG)(2)(H(2)O)(2)](ClO(4))(2) (4). The crystal structures of the metal complexes were confirmed by single crystal X-ray diffraction. Complex 1 is an ionic compound consisting of a charged ligand [OGH](+) and a gold complex [AuCl(4)](-). Complexes 2-4 all have similar structures (inner-spheres), that is, octahedral geometry with two OG coordinating to one metal center and two aqua ligands occupying the two apical positions of the octahedron, and two NO(3)(-) or ClO(4)(-) as counteranions in the outer-sphere. The complexation of OG to metal ion was confirmed by ESI-MS, capillary electrophoresis and fluorescence polarization. The in vitro cytotoxicity of these complexes toward a various tumor cell lines was assayed by the MTT method. The results showed that most of these metal-oxoglaucine complexes exhibited enhanced cytotoxicity compared with oxoglaucine and the corresponding metal salts, with IC(50) values ranging from 1.4 to 32.7 µM for sensitive cancer cells, which clearly implied a positive synergistic effect. Moreover, these complexes appeared to be selectively active against certain cell lines. The interactions of oxoglaucine and its metal complexes with DNA and topoisomerase I were investigated by UV-vis, fluorescence, CD spectroscopy, viscosity, and agarose gel electrophoresis, and the results indicated that these OG-metal complexes interact with DNA mainly via intercalation. Complexes 2-4 are metallointercalators, but complex 1 is not. These metal complexes could effectively inhibit topoisomerase I even at low concentration. Cell cycle analysis revealed that 1-3 caused S-phase cell arrest.


Assuntos
Antineoplásicos Fitogênicos/química , Antineoplásicos Fitogênicos/farmacologia , Apomorfina/análogos & derivados , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacologia , Animais , Apomorfina/química , Apomorfina/farmacologia , Bovinos , Ciclo Celular/efeitos dos fármacos , Linhagem Celular , Complexos de Coordenação/química , Complexos de Coordenação/farmacologia , Cristalografia por Raios X , DNA/metabolismo , DNA Topoisomerases Tipo I/metabolismo , Humanos , Modelos Moleculares , Neoplasias/tratamento farmacológico , Inibidores da Topoisomerase I/química , Inibidores da Topoisomerase I/farmacologia , Elementos de Transição/química , Elementos de Transição/farmacologia
17.
Zhonghua Bing Li Xue Za Zhi ; 41(10): 671-5, 2012 Oct.
Artigo em Chinês | MEDLINE | ID: mdl-23302308

RESUMO

OBJECTIVE: To investigate the clinicopathologic features of the brain tissue diagnosed as ulegyria from modified anatomic hemispherectomy for refractory epilepsy. METHODS: The clinical and pathologic findings were reviewed in 39 patients who underwent modified anatomic hemispherectomy and diagnosed as ulegyria in the Epilepsy Center of Tsinghua University Yuquan Hospital from 2007 to 2011. RESULTS: All patients including 30 males and 9 females had medically intractable seizures, and the mean age of seizure onset and disease duration were 4.0 years and 7.3 years respectively. Significant history included febrile seizure in 14 patients (35.9%), cerebral hemorrhage in 8 patients (20.5%), fetal distress and surgical trauma each in 6 patients (15.4%), vascular malformation and cerebral hemorrhage in 1 patient (2.6%), and unclear history in 4 patients (10.2%). Histologically, all cases were characterized by cortical destruction, with neuronal loss and gliosis. All cases were accompanied by varying degree of cortical dysplasia, which were diagnosed as focal cortical dysplasia IIId. Hippocampus sclerosis was identified in 2 cases. Seizure outcome after surgery revealed 37 patients (94.9%) had an Engel grade I, two patients (5.1%) had an Engel grade II. CONCLUSIONS: Febrile seizure, cerebral hemorrhage, fetal distress and surgical trauma in childhood can lead to refractory epilepsy. Histopathological change in the brain is ulegyria accompanied by focal cortical dysplasia IIId. Modified anatomic hemispherectomy is an effective therapy to treat those patients with extensive changes of one hemisphere.


Assuntos
Córtex Cerebral/anormalidades , Córtex Cerebral/patologia , Epilepsia/patologia , Hemisferectomia/métodos , Malformações do Desenvolvimento Cortical/patologia , Adolescente , Adulto , Complexo CD3/metabolismo , Córtex Cerebral/cirurgia , Criança , Pré-Escolar , Epilepsia/metabolismo , Epilepsia/cirurgia , Feminino , Seguimentos , Humanos , Lactente , Imageamento por Ressonância Magnética , Masculino , Malformações do Desenvolvimento Cortical/metabolismo , Malformações do Desenvolvimento Cortical/cirurgia , Estudos Retrospectivos , Adulto Jovem
18.
Chin Med J (Engl) ; 124(17): 2611-5, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22040412

RESUMO

BACKGROUND: Site A132Arg mutations potentially impair the affinity of isocitrate dehydrogenase 1 (IDH1) for its substrate isocitrate (ICT), consequently reducing the production of α-ketoglutarate and leading to tumor growth through the induction of the hypoxia-inducible factor-1 (HIF-1) pathway. However, given that the roles of other active sites in IDH1 substrate binding remain unclear, we aimed to investigate IDH1 mutation pattern and its influence on enzyme function. METHODS: Fifteen IDH1 catalytic active site candidates were selected for in silico mutagenesis and protein homology modeling. Binding free energy of the IDH1/ICT complexes with single-site mutations was compared with that of the wild type. The affinity of 10 IDH1 catalytic active sites for the ICT substrate was further calculated. RESULTS: The IDH1 active site included seven residues from chain A (A77Thr, A94Ser, A100Arg, A132Arg, A109Arg, A275Asp, and A279Asp) and three residues from chain B (B214Thr, B212Lys, and B252Asp) that constituted the substrate ICT-binding site. These residues were located within 0.5 nm of ICT, indicating a potential interaction with the substrate. IDH1 changes of binding free energy (ΔE) suggested that the A132Arg residue from chain A contributes three hydrogen bonds to the ICT α-carboxyl and ß-carboxyl groups, while the other nine residues involved in ICT binding form only one or two hydrogen bonds. Amino acid substitutes at A132Arg, A109Arg, and B212Lys sites, had the greatest effect on enzyme affinity for its substrate. CONCLUSIONS: Mutations at sites A132Arg, A109Arg, and B212Lys reduced IDH1 affinity for ICT, indicating these active sites may play a central role in substrate binding. Mutations at sites A77Thr, A94Ser, and A275Asp increased the affinity of IDH1 for ICT, which may enhance IDN1 catalytic activity. Mutant IDH1 proteins with higher catalytic activity than the wild-type IDH1 could potentially be used as a novel gene therapy for glioblastoma multiforme.


Assuntos
Glioblastoma/genética , Isocitrato Desidrogenase/genética , Isocitrato Desidrogenase/metabolismo , Domínio Catalítico/genética , Humanos , Isocitratos/metabolismo , Mutagênese , Mutação , Ligação Proteica , Relação Estrutura-Atividade
19.
Behav Brain Funct ; 7: 32, 2011 Aug 10.
Artigo em Inglês | MEDLINE | ID: mdl-21827719

RESUMO

BACKGROUND/AIMS: Neurological abnormalities have been reported in normal aging population. However, most of them were limited to extrapyramidal signs and soft signs such as motor coordination and sensory integration have received much less attention. Very little is known about the relationship between neurological soft signs and neurocognitive function in healthy elder people. The current study aimed to examine the underlying relationships between neurological soft signs and neurocognition in a group of healthy elderly. METHODS: One hundred and eighty healthy elderly participated in the current study. Neurological soft signs were evaluated with the subscales of Cambridge Neurological Inventory. A set of neurocognitive tests was also administered to all the participants. Structural equation modeling was adopted to examine the underlying relationship between neurological soft signs and neurocognition. RESULTS: No significant differences were found between the male and female elder people in neurocognitive function performances and neurological soft signs. The model fitted well in the elderly and indicated the moderate associations between neurological soft signs and neurocognition, specifically verbal memory, visual memory and working memory. CONCLUSIONS: The neurological soft signs are more or less statistically equivalent to capture the similar information done by conventional neurocognitive function tests in the elderly. The implication of these findings may serve as a potential neurological marker for the early detection of pathological aging diseases or related mental status such as mild cognitive impairment and Alzheimer's disease.


Assuntos
Envelhecimento/psicologia , Cognição , Disfunção Cognitiva/diagnóstico , Disfunção Cognitiva/psicologia , Modelos Neurológicos , Idoso , Idoso de 80 Anos ou mais , Cognição/fisiologia , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/epidemiologia , Transtornos Cognitivos/psicologia , Disfunção Cognitiva/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos
20.
Psychiatry Res ; 186(1): 71-5, 2011 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-20667601

RESUMO

The current study aimed to determine whether there is a specific neurocognitive deficit in individuals with schizotypal personality features. One hundred and fifty-nine healthy participants and 62 schizotypal individuals completed a comprehensive battery of cognitive tests. The cognitive functions captured by the battery could be reduced to 6 factors. Significant difference was found between participants with schizotypal features and healthy controls in allocation, verbal memory and marginally in working memory. Schizotypal traits tended to correlate with some of the cognitive factors, especially allocation, verbal memory and working memory.


Assuntos
Transtornos Cognitivos/etiologia , Transtorno da Personalidade Esquizotípica/complicações , Adulto , Atenção/fisiologia , Transtornos Cognitivos/diagnóstico , Função Executiva/fisiologia , Feminino , Humanos , Inibição Psicológica , Inteligência , Masculino , Memória/fisiologia , Análise Multivariada , Testes Neuropsicológicos , Inquéritos e Questionários , Aprendizagem Verbal/fisiologia , Adulto Jovem
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