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1.
Biomed Pharmacother ; 170: 116027, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38113630

RESUMO

Shen Qi Wan (SQW) has been proven to exert anti-inflammatory effects in the kidneys of CKD models accompanied by unclear therapeutic mechanisms. This study aims to evaluate the kidney-protective and anti-inflammatory effects of SQW and to elucidate its fundamental mechanisms for CKD treatment. Firstly, the main active components of SQW were identified by UPLC-Q-TOF/MS technique. Subsequently, we evaluated inflammatory factors, renal function and renal pathology changes following SQW treatment utilizing adenine-induced CKD mice and aquaporin 1 knockout (AQP1-/-) mice. Additionally, we conducted RNA-seq analysis and bioinformatics analysis to predict the SQW potential therapeutic targets and anti-nephritis pathways. Simultaneously, WGCNA analysis method and machine learning algorithms were used to perform a clinical prognostic analysis of potential biomarkers in CKD patients from the GEO database and validated through clinical samples. Lipopolysaccharide-induced HK-2 cells were further used to explore the mechanism. We found that renal collagen deposition was reduced, serum inflammatory cytokine levels decreased, and renal function was improved after SQW intervention. It can be inferred that ß-defensin 1 (DEFB1) may be a pivotal target, as confirmed by serum and renal tissue samples from CKD patients. Furthermore, SQW assuages inflammatory responses by fostering AQP1-mediated DEFB1 expression was confirmed in in vitro and in vivo studies. Significantly, the renal-protective effect of SQW is to some extent attenuated after AQP1 gene knockout. SQW could reduce inflammatory responses by modulating AQP1 and DEFB1. These findings underscore the potential of SQW as a promising contender for novel prevention and treatment strategies within the ambit of CKD management.


Assuntos
Nefrite , Insuficiência Renal Crônica , beta-Defensinas , Humanos , Camundongos , Animais , Aquaporina 1/genética , Insuficiência Renal Crônica/tratamento farmacológico , Insuficiência Renal Crônica/patologia , Rim/patologia , Nefrite/patologia , Anti-Inflamatórios
2.
Curr Psychol ; : 1-13, 2022 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-36277265

RESUMO

Interindividual differences in personal values are prevalent both within and across societies. Interindividual differences in personal value and the relationships with mental health disorders and life satisfaction remain to be holistically considered, especially in China. The present study aims to characterize personal value profiles based on Schwartz's theory model and to examine differences in several mental health-related disorders and life satisfaction potentially across these profiles. Using convenience sampling, a sample of 8,540 Chinese college students (Mage = 18.89, SDage = 2.02, 57.7% male) from three universities completed a questionnaire assessing personal values, internalizing problems, externalizing problems, substance disorders, crime/violence, and life satisfaction. The latent profile analysis identified five personal value profiles, which were labelled as traditional social orientation, open personal orientation, open social orientation, moderate traditional social orientation, and average. Chinese college students in the three social orientation profiles reported low mental health disorders and high life satisfaction. In contrast, students in the personal orientation profile reported high mental health disorders and low life satisfaction. The results indicate the heterogeneity of Chinese college students' personal values and the positive relationship of social-oriented values with mental health and life satisfaction in collectivist cultures.

3.
Artigo em Inglês | MEDLINE | ID: mdl-34119573

RESUMO

OBJECTIVE: While gastrointestinal (GI) symptoms are very common in patients with major depressive disorder (MDD), few studies have investigated the neural basis behind these symptoms. In this study, we sought to elucidate the neural basis of GI symptoms in MDD patients by analyzing the changes in regional gray matter volume (GMV) and gray matter density (GMD) in brain structure. METHOD: Subjects were recruited from 13 clinical centers and categorized into three groups, each of which is based on the presence or absence of GI symptoms: the GI symptoms group (MDD patients with at least one GI symptom), the non-GI symptoms group (MDD patients without any GI symptoms), and the healthy control group (HCs). Structural magnetic resonance images (MRI) were collected of 335 patients in the GI symptoms group, 149 patients in the non-GI symptoms group, and 446 patients in the healthy control group. The 17-item Hamilton Depression Rating Scale (HAMD-17) was administered to all patients. Correlation analysis and logistic regression analysis were used to determine if there was a correlation between the altered brain regions and the clinical symptoms. RESULTS: There were significantly higher HAMD-17 scores in the GI symptoms group than that of the non-GI symptoms group (P < 0.001). Both GMV and GMD were significant different among the three groups for the bilateral superior temporal gyrus, bilateral middle temporal gyrus, left lingual gyrus, bilateral caudate nucleus, right Fusiform gyrus and bilateral Thalamus (GRF correction, cluster-P < 0.01, voxel-P < 0.001). Compared to the HC group, the GI symptoms group demonstrated increased GMV and GMD in the bilateral superior temporal gyrus, and the non-GI symptoms group demonstrated an increased GMV and GMD in the right superior temporal gyrus, right fusiform gyrus and decreased GMV in the right Caudate nucleus (GRF correction, cluster-P < 0.01, voxel-P < 0.001). Compared to the non-GI symptoms group, the GI symptoms group demonstrated significantly increased GMV and GMD in the bilateral thalamus, as well as decreased GMV in the bilateral superior temporal gyrus and bilateral insula lobe (GRF correction, cluster-P < 0.01, voxel-P < 0.001). While these changed brain areas had significantly association with GI symptoms (P < 0.001), they were not correlated with depressive symptoms (P > 0.05). Risk factors for gastrointestinal symptoms in MDD patients (p < 0.05) included age, increased GMD in the right thalamus, and decreased GMV in the bilateral superior temporal gyrus and left Insula lobe. CONCLUSION: MDD patients with GI symptoms have more severe depressive symptoms. MDD patients with GI symptoms exhibited larger GMV and GMD in the bilateral thalamus, and smaller GMV in the bilateral superior temporal gyrus and bilateral insula lobe that were correlated with GI symptoms, and some of them and age may contribute to the presence of GI symptoms in MDD patients.


Assuntos
Transtorno Depressivo Maior/patologia , Substância Cinzenta/patologia , Dor Abdominal/etiologia , Dor Abdominal/psicologia , Adulto , Encéfalo/patologia , Escalas de Graduação Psiquiátrica Breve , Núcleo Caudado/patologia , Feminino , Humanos , Processamento de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Masculino , Lobo Temporal/patologia , Tálamo/patologia
4.
Chinese Acupuncture & Moxibustion ; (12): 1103-1107, 2021.
Artigo em Chinês | WPRIM | ID: wpr-921017

RESUMO

OBJECTIVE@#To compare the efficacy of different electroacupuncture (EA) frequencies and wave patterns combined with medication and medication alone for sudden hearing loss (SHL), and to explore better electroacupuncture stimulation parameters.@*METHODS@#All of 118 patients with SHL were randomly divided into an acupuncture and medication group 1 (group 1, 30 cases, 1 case dropped off), an acupuncture and medication group 2 (group 2, 30 cases), an acupuncture and medication group 3 (group 3, 31 cases) and a medication group (27 cases, 1 case dropped off ). The patients in the medication group were treated with conventional medication. On the base of the medication group, the patients in the group 1, 2, and 3 were treated with acupuncture at Ermen (TE 21), Tinggong (SI 19), Tinghui (GB 2), Fengchi (GB 20), etc. on the affected side, and EA at Ermen (TE 21)-Yifeng (TE 17), Tinghui (GB 2)-Yifeng (TE 17) alternately. The 3 groups were given continuous wave with frequency of 2 Hz, continuous wave with frequency of 50 Hz, and disperse-dense wave with frequency of 2 Hz/50 Hz respectively. The treatment was given once a day, 10 days were as one course, with 2 courses in total. Before and after treatment, the pure tone hearing threshold test was performed, and the curative effect of pure tone hearing threshold test and the curative effect of tinnitus, ear fullness and dizziness were compared in the 3 groups.@*RESULTS@#After treatment, the pure tone hearing threshold test values of each group were lower than those before treatment (@*CONCLUSION@#On the basis of conventional medication treatment, the addition of electroacupuncture can effectively improve the hearing and ear stuffiness symptoms of patients with SHL, and the disperse-dense wave with frequency of 2 Hz/50 Hz is more effective.


Assuntos
Humanos , Pontos de Acupuntura , Terapia por Acupuntura , Eletroacupuntura , Perda Auditiva Súbita/terapia , Zumbido/terapia
5.
Huan Jing Ke Xue ; 40(7): 3313-3323, 2019 Jul 08.
Artigo em Chinês | MEDLINE | ID: mdl-31854733

RESUMO

In order to explore the effect of land-use change on soil bacteria in wetland systems, the topsoil (0-20 cm) of a natural wetland (NW), paddy field (PF), and dry land (DL) were collected in the Huixian karst wetland. The α-diversity, species composition, and abundance of soil bacterial communities were analyzed using high-throughput sequencing. The effect of environmental factors on bacterial community structure was also examined. The results showed that the soil bacteria in the Huixian karst wetland can be divided into 49 phyla and 145 classes. The Shannon index of bacteria in the PF was significantly higher, and the Simpson index of bacteria in the NW is significantly lower, than in the other two land-use types. The dominant phyla (operational taxonomic units, OTUs>1%) in the NW were Proteobacteria (52.15%), Actinobacteria (15.16%), and Acidobacteria (8.80%); the dominant phyla in the PF were Proteobacteria (45.79%), Acidobacteria (17.20%), and Chloroflexi (11.75%); the dominant phyla in the DL were Proteus (51.42%), Acidobacteria (15.51%), and Chloroflexi (7.43%). The dominant classes (OTUs>1%) in the NW were α-Proteobacteria (17.98%), ß-Proteobacteria (13.72%), and Actinobacteria (13.13%); the dominant classes in the PF were Acidobacteria (14.35%), ß-Proteobacteria (13.37%), and δ-Proteobacteria (12.02%); the dominant classes in the DL were α-Proteobacteria (19.44%), Formobacteria (13.30%), and Acidobacteria (13.03%). Among the dominant OTUs (>0.3%), the dominant genera of in the NW were Sphingomonas (OTU2, 59), Micromonospora (OTU5, 24 and 50487), Gemmatimonas (OTU1), and Tenotrophomonas (OTU8); the dominant genera in the PF were Lysobacter (OTU4 and 115) and Aquabacterium (OTU33); the dominant genera in the DL were Sphingomonas (OTU85, 157 and 2916), Rhodanobacter (OTU19 and 52), and Penlobacterium (OTU60). A heatmap showed that there were significant differences in soil bacterial community structure among the three land-use types. Redundancy analysis showed that pH, soil organic carbon (SOC), total nitrogen (TN), alkali-hydrolyzable nitrogen (AN), exchangeable Mg2+, exchangeable Ca2+, soluble organic carbon (DOC), and available phosphorus (AP) were the main factors that affected the bacterial community structure in the Huixian karst wetland. These results indicate that changes in land-use types have significantly shaped the structure of soil bacterial communities in this area.


Assuntos
Agricultura , Bactérias/classificação , Oryza , Microbiologia do Solo , Áreas Alagadas , Cálcio/análise , Carbono/análise , China , Nitrogênio/análise , Fósforo/análise
6.
J Ethnopharmacol ; 232: 103-109, 2019 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-30543914

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: The leeches (Shuizhi) comprise approximately 680 species distributed throughout the world. As recorded, they have been used as traditional Chinese medicines since the Eastern Han Dynasty, where they were claimed for promote blood circulation and eliminate blood stasis. And have been used to prevent CVDs by exerting multiple effects when orally administered, one of which is the significant inhibition of platelet aggregation. Its ability to exert this effect has been extensively investigated in vivo and in clinical practice. AIM OF STUDY: The aim of this review is to summarize and analyse the antiplatelet aggregation mechanisms of leeches by oral administration, support their therapeutic potential and uncover opportunities for future research. MATERIALS AND METHODS: Relevant studies from 1980 to 2018 on leeches and platelet aggregation were collected from ancient books, pharmacopoeia, reports and theses via library and internet databases (PubMed, CNKI, Google Scholar, Web of science, SciFinder, Springer and Elsevier). RESULTS: Leeches is a unique animal medicine, they can prevent platelet aggregation by inhibiting ADP-induced platelet aggregation, increasing PGI2, decreasing TXA2 and Ca2+, and possibly recovering endothelial cell dysfunction. Leeches also exhibit a strong ability to activate eNOS, leading to an increase in platelet-derived NO. Additionally, the pteridine compounds obtained and identified from leeches have sulfur structure similar to those of other antiplatelet aggregation agents, such as ticlopidine, clopidogrel and ticagrelor. CONCLUSION: The present review has focused on the related antiplatelet aggregation mechanisms, dipyridine compounds and toxicological information of leeches. According to the reported data, leeches have emerged as a good source of natural medicine for the treatment of antiplatelet aggregation agents and also make educated guesses for material basis of effects on antiplatelet aggregation. This review can help provide new insights for further studies in association with the development of effective antiplatelet aggregation drugs from natural medicines, especially leeches.


Assuntos
Doenças Cardiovasculares/terapia , Sanguessugas , Agregação Plaquetária , Administração Oral , Animais , Humanos
7.
Sci Rep ; 7(1): 6252, 2017 07 24.
Artigo em Inglês | MEDLINE | ID: mdl-28740242

RESUMO

The most widely used measurements of mindfulness are the Mindful Attention Awareness Scale (MAAS) and the Five Facet Mindfulness Questionnaire (FFMQ). However, controversies exist regarding the application of these scales. Additionally, the neural mechanisms of dispositional mindfulness havebecome a topic of interest. In the current study, we used surface-based methodology to identify the brain regions underlying individual differences in dispositional mindfulness in a large non-clinical sampleand compared the two instruments for measuring the dispositional mindfulness. The results indicated that theMAAS scores were significantly associated with increased greymatter volumes in the right precuneus and the significant association between the precuneus and depression symptomatology was mediated by MAAS scores. Regarding the FFMQ, the Describing, Nonjudging, and Nonreactivity facets were selectively associated with the cortical volume, thickness and surface area of multiple prefrontal regions as well as the inferior parietal lobule. Importantly, Describing mediated the association between the dorsolateral PFC volume and the cognitive reappraisal strategies of emotion regulation. These resultssuggested that the MAASwere mainly associated with self-awareness, while the FFMQ facets were selectively involved in emotion regulation, attention control and self-awareness. Therefore, this study characterized the differences in inter-individual variability between the two typical measurements of dispositional mindfulnessand the correlations between those measurements and imaging analyses.


Assuntos
Mapeamento Encefálico/métodos , Encéfalo/anatomia & histologia , Encéfalo/fisiologia , Depressão/fisiopatologia , Emoções/fisiologia , Imageamento por Ressonância Magnética/métodos , Atenção Plena , Adulto , Feminino , Humanos , Imageamento por Ressonância Magnética/instrumentação , Masculino , Personalidade , Adulto Jovem
8.
Eur Arch Psychiatry Clin Neurosci ; 266(6): 543-55, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26614098

RESUMO

Clinical studies have shown that thalamus infarction (TI) affects memory function. The thalamic nucleus is directly or indirectly connected to the hippocampal system in animal models. However, this connection has not been investigated using structural magnetic resonance imaging (MRI) in humans. From the pathological perspective, TI patients may serve as valid models for revealing the interaction between the thalamus and hippocampus in memory function. In this study, we aim to assess different hippocampal subfield volumes in TI patients and control subjects using MRI and test their associations with memory function. A total of 37 TI patients (TI group), 38 matched healthy control subjects (HC group), and 22 control patients with other stroke location (SC group) underwent 3.0-T MRI scans and clinical memory examinations. Hippocampal subfield volumes were measured and compared by using FreeSurfer software. We examined the correlation between hippocampal subfield volumes and memory scores. Smaller ipsilesional presubiculum and subiculum volumes were observed, and former was related to graphics recall in both left and right TI patients. The left subiculum volume was correlated with short-delayed recall in left TI patients. The right presubiculum volume was correlated with short- and long-delayed recall in right TI patients. TI was found to result in hippocampal abnormality and memory deficits, and its neural mechanisms might be related with and interaction between the thalamus and hippocampus.


Assuntos
Infarto Encefálico/complicações , Infarto Encefálico/patologia , Hipocampo/patologia , Transtornos da Memória/etiologia , Tálamo/patologia , Adulto , Infarto Encefálico/diagnóstico por imagem , Estudos de Casos e Controles , Feminino , Lateralidade Funcional , Hipocampo/diagnóstico por imagem , Humanos , Processamento de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Estatísticas não Paramétricas , Tálamo/diagnóstico por imagem , Aprendizagem Verbal
9.
Biomed Res Int ; 2015: 398028, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26167485

RESUMO

Large volumes of untreated palm oil mill effluent (POME) pose threat to aquatic environment due to the presence of very high organic content. The present investigation involved two pilot-scale anaerobic expanded granular sludge bed (EGSB) reactors, continuously operated for 1 year to treat POME. Setting HRT at 9.8 d, the anaerobic EGSB reactors reduced COD from 71179 mg/L to 12341 mg/L and recycled half of sludge by a dissolved air flotation (DAF). The average effluent COD was 3587 mg/L with the consistent COD removal efficiency of 94.89%. Adding cationic polymer (PAM) dose of 30 mg/L to DAF unit and recycling its half of sludge caused granulation of anaerobic sludge. Bacilli and small coccid bacteria were the dominant microbial species of the reactor. The reactor produced 27.65 m(3) of biogas per m(3) of POME which was utilized for electricity generation.


Assuntos
Reatores Biológicos/microbiologia , Óleos de Plantas/metabolismo , Esgotos/microbiologia , Eliminação de Resíduos Líquidos/métodos , Anaerobiose , Análise da Demanda Biológica de Oxigênio , Óleo de Palmeira , Óleos de Plantas/química
10.
Biomed Res Int ; 2015: 617861, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25685798

RESUMO

Palm oil is one of the most important agroindustries in Malaysia. Huge quantities of palm oil mill effluent (POME) pose a great threat to aqueous environment due to its very high COD. To make full use of discharged wastes, the integrated "zero discharge" pilot-scale industrial plant comprising "pretreatment-anaerobic and aerobic process-membrane separation" was continuously operated for 1 year. After pretreatment in the oil separator tank, 55.6% of waste oil in raw POME could be recovered and sold and anaerobically digested through 2 AnaEG reactors followed by a dissolved air flotation (DAF); average COD reduced to about 3587 mg/L, and biogas production was 27.65 times POME injection which was used to generate electricity. The aerobic effluent was settled for 3 h or/and treated in MBR which could remove BOD3 (30°C) to less than 20 mg/L as required by Department of Environment of Malaysia. After filtration by UF and RO membrane, all organic compounds and most of the salts were removed; RO permeate could be reused as the boiler feed water. RO concentrate combined with anaerobic surplus sludge could be used as biofertilizer.


Assuntos
Indústria de Processamento de Alimentos/métodos , Óleos de Plantas , Águas Residuárias , Purificação da Água/métodos , Óleo de Palmeira
11.
J Pharm Sci ; 103(3): 853-61, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24464772

RESUMO

The aggregation behavior and critical aggregation concentration (CAC) values of daptomycin in aqueous solutions were evaluated under the external factors of pH, temperature, daptomycin concentration, and calcium ions concentration by using the complementary characterization techniques, fluorescence, dynamic and static light scattering, and nuclear magnetic resonance (NMR) spectroscopy. On the basis of the intrinsic fluorescence resonance energy transfer of daptomycin, the CAC values were identified by an upward inflection of the fluorescence emission from Kyn-13 at 460 nm. The pH-dependent CAC values were determined to be 0.14 mM at pH 3.0, 0.12 mM at pH 4.0, and 0.20 mM at pH 2.5 and 5.0. The CAC values obtained by fluorescence spectroscopy were confirmed by dynamic light scattering and NMR spectroscopy.


Assuntos
Antibacterianos/química , Daptomicina/química , Ionóforos/química , Antibacterianos/metabolismo , Sinalização do Cálcio , Daptomicina/metabolismo , Estabilidade de Medicamentos , Transferência Ressonante de Energia de Fluorescência , Temperatura Alta , Concentração de Íons de Hidrogênio , Ionóforos/metabolismo , Cinética , Ácido Cinurênico/química , Cinurenina/química , Cinurenina/metabolismo , Nefelometria e Turbidimetria , Ressonância Magnética Nuclear Biomolecular , Concentração Osmolar , Tamanho da Partícula , Estabilidade Proteica , Solubilidade , Espectrofotometria Ultravioleta , Triptofano/química
12.
Int J Clin Exp Pathol ; 6(8): 1624-30, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23923081

RESUMO

Adult Hirschsprung's disease (HD) is a rare motor disorder of the gut that is frequently misdiagnosed as refractory constipation. The primary pathogenic defect in adult HD is identical to that seen in infancy or childhood, and is characterized by the total absence of intramural ganglion cells of the submucosal (Meissner) and myenteric (Auerbach) neural plexuses in the affected segment of the bowel. Ninety-four percent of HD cases are diagnosed before the patient reaches 5 years of age, however, on rare occasion, mild cases of HD may go undiagnosed until he or she reaches adulthood. In this study, we describe four cases of adult HD with a history of longstanding recurrent constipation, relieved by laxatives, and presenting to the Department of Gastrointestinal Surgery with progressive abdominal distention, colicky pain or acute intestinal obstruction. Barium enema or computed tomography revealed a grossly distended proximal large colon with fecal retention. Intraoperative frozen section biopsy was performed in all cases and showed aganglionosis of the stenotic segment and a normal distal rectum. In all cases, patient symptoms were completely resolved and there were no complications arising immediately post-surgery or at one-year follow-up. Adult HD should be considered in the differential diagnosis of cases where adult patients present with chronic constipation or even acute intestinal obstruction. The modified one-stage Martin-Duhamel or Rehbein's procedure is a feasible surgical option for treating cases of adult HD involving a segment or the entire bowel.


Assuntos
Doença de Hirschsprung/patologia , Idade de Início , Idoso , Constipação Intestinal/etiologia , Procedimentos Cirúrgicos do Sistema Digestório , Feminino , Doença de Hirschsprung/complicações , Doença de Hirschsprung/cirurgia , Humanos , Pessoa de Meia-Idade
13.
PLoS One ; 8(1): e49231, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23372641

RESUMO

A number of major inventions in history have been based on bionic imitation. Heuristics, by applying biological systems to the creation of artificial devices and machines, might be one of the most critical processes in scientific innovation. In particular, prototype heuristics propositions that innovation may engage automatic activation of a prototype such as a biological system to form novel associations between a prototype's function and problem-solving. We speculated that the cortical dissociation between the automatic activation and forming novel associations in innovation is critical point to heuristic creativity. In the present study, novel and old scientific innovations (NSI and OSI) were selected as experimental materials in using learning-testing paradigm to explore the neural basis of scientific innovation induced by heuristic prototype. College students were required to resolve NSI problems (to which they did not know the answers) and OSI problems (to which they knew the answers). From two fMRI experiments, our results showed that the subjects could resolve NSI when provided with heuristic prototypes. In Experiment 1, it was found that the lingual gyrus (LG; BA18) might be related to prototype heuristics in college students resolving NSI after learning a relative prototype. In Experiment 2, the LG (BA18) and precuneus (BA31) were significantly activated for NSI compared to OSI when college students learned all prototypes one day before the test. In addition, the mean beta-values of these brain regions of NSI were all correlated with the behavior accuracy of NSI. As our hypothesis indicated, the findings suggested that the LG might be involved in forming novel associations using heuristic information, while the precuneus might be involved in the automatic activation of heuristic prototype during scientific innovation.


Assuntos
Comportamento/fisiologia , Giro Denteado/fisiologia , Giro do Cíngulo/fisiologia , Aprendizagem/fisiologia , Resolução de Problemas/fisiologia , Tálamo/fisiologia , Adulto , Inteligência Artificial , Mapeamento Encefálico , Giro Denteado/anatomia & histologia , Feminino , Giro do Cíngulo/anatomia & histologia , Humanos , Invenções , Imageamento por Ressonância Magnética , Masculino , Tálamo/anatomia & histologia
14.
Brain Res Bull ; 86(1-2): 106-9, 2011 Aug 10.
Artigo em Inglês | MEDLINE | ID: mdl-21741456

RESUMO

Event-related brain potentials (ERPs) were used to examine the different negative emotional contexts on involuntary attention, induced by a task-irrelevant sound, in an auditory-visual distraction paradigm. The emotional contexts comprised sad, fearful and neutral, and the irrelevant auditory stimuli consisted of repetitive standard sounds (80%) and environmental novel sounds (20%). The present results revealed that there were apparently different mismatch negativity (MMN) and Novelty-P3 components among these emotional contexts. Specifically, the amplitude of MMN showed no significant difference, indicating that the early stage of involuntary attention was not affected by the emotional context. Then, the amplitude of Novelty-P3, indicating the involuntary orienting of attention to novel sounds, attenuated greatest in the sad context. This pattern of results was more likely due to the competition for attention resources between affective processing and the novel sounds. That is to say, sad inhibit the involuntary attention to some extent, whereas perceiving fear cues facilitated novelty detection.


Assuntos
Atenção/fisiologia , Emoções , Potenciais Evocados/fisiologia , Estimulação Acústica/métodos , Eletroencefalografia/métodos , Face , Feminino , Humanos , Masculino , Adulto Jovem
15.
Exp Brain Res ; 205(1): 81-6, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20628735

RESUMO

Event-related brain potentials (ERPs) were used to examine the electrophysiological effect of working memory (WM) load on involuntary attention caused by a task-irrelevant sound in an auditory-visual distraction paradigm. The different WM loads were manipulated by requiring subjects to remember the order of either three digits (low-load condition) or seven digits (high-load condition), and the irrelevant auditory stimuli consisted of repetitive standard sounds (80%) and environmental novel sounds (20%). We found that the difference waves (novel-minus-standard) showed significant MMN and Novelty-P3 components in the two WM load conditions. The amplitude of MMN increased with increasing the WM load, which indicated a more engaged change detection process under high-load condition. Then, the amplitude of Novelty-P3 was attenuated under high-load condition, which indicated a much reduced involuntary orienting of attention to novel sounds when increasing the WM load. These results indicated the top-down control of involuntary attention might be mainly active at the early change detection stage and the control of the later involuntary orienting of attention might be passive.


Assuntos
Atenção/fisiologia , Eletroencefalografia , Potenciais Evocados Auditivos/fisiologia , Potenciais Evocados Visuais/fisiologia , Memória de Curto Prazo/fisiologia , Estimulação Acústica/métodos , Análise de Variância , Mapeamento Encefálico , Eletroculografia/métodos , Feminino , Humanos , Masculino , Estimulação Luminosa/métodos , Tempo de Reação/fisiologia , Fatores de Tempo , Adulto Jovem
16.
Chinese Journal of Pediatrics ; (12): 905-912, 2010.
Artigo em Chinês | WPRIM | ID: wpr-286180

RESUMO

<p><b>OBJECTIVE</b>To construct the folic acid deficient model in zebrafish and observe the abnormal cardiac phenotypes, to find the optimal period for supplementing folic acid that can most effectively prevent the heart malformation induced by folic acid deficiency, and to investigate the possible mechanisms by which folic acid deficiency induces malformations of heart.</p><p><b>METHOD</b>The folic acid deficient zebrafish model was constructed by using both the folic acid antagonist methotrexate (MTX) and knocking-down dhfr (dihydrofolate reductase gene). Exogenous tetrahydrofolic acid rescue experiment was performed. Folic acid was given to folic acid deficient groups in different periods. The percent of cardiac malformation, the cardiac phenotypes, the heart rate and the ventricular shortening fraction (VSF) were recorded. The out flow tract (OFT) was observed by using fluorescein micro-angiography. Whole-mount in situ hybridization and real-time PCR were performed to detect vmhc, amhc, tbx5 and nppa expressions.</p><p><b>RESULT</b>About (78.00 ± 3.74)% embryos in MTX treated group and (68.00 ± 6.32)% embryos in dhfr knocking-down group had heart malformations, including the abnormal cardiac shapes, the hypogenesis of OFT and the reduced heart rate and VSF. Giving exogenous tetrahydrofolic acid rescued the above abnormalities. Given the folic acid on 8 - 12 hours post-fertilization (hpf), both the MTX treated group (20.20% ± 3.77%) and dhfr knocking-down group (43.40% ± 4.51%) showed the most significantly reduced percent of cardiac malformation and the most obviously improved cardiac development. In folic acid deficient group, the expressions of tbx5 and nppa were reduced while the expressions of vmhc and amhc appeared normal. After being given folic acid to MTX treated group and dhfr knocking-down group, the expressions of tbx5 and nppa were increased.</p><p><b>CONCLUSIONS</b>The synthesis of tetrahydrofolic acid was decreased in our folic acid deficient model. Giving folic acid in the middle period, which is the early developmental stage, can best prevent the abnormal developments of hearts induced by folic acid deficiency. Folic acid deficiency did not disrupt the differentiations of myosins in ventricle and atrium. The cardiac malformations caused by folic acid deficiency were related with the reduced expressions of tbx5 and nppa.</p>


Assuntos
Animais , Fator Natriurético Atrial , Metabolismo , Diferenciação Celular , Ácido Fólico , Metabolismo , Deficiência de Ácido Fólico , Genética , Metabolismo , Técnicas de Silenciamento de Genes , Coração , Embriologia , Proteínas com Domínio T , Metabolismo , Peixe-Zebra , Embriologia , Genética
17.
Artigo em Chinês | WPRIM | ID: wpr-254908

RESUMO

<p><b>OBJECTIVE</b>To probe into the effective acupuncture technique for deviation of the mouth in intractable facial palsy.</p><p><b>METHODS</b>One hundred and one cases of intractable facial palsy were randomly divided into an observation group (48 cases) and a control group (53 cases). Cuanzhu (BL 2), Sibai (ST 2), Jiache (ST 6) and Qianzheng (Extra) on the affected side were punctured in two groups. Additionally, three acupoints of the mouth were supplemented, named Dicang (ST 4), Kouheliao (LI 19) and Jiachengjiang (Extra) were added, and the sticking needle and traction method was adopted on them in observation group. the routine needling technique was applied in control group. The treatment was given once a day and 10-day treatment made one session. The changes in facial nerve function index (FNFI) were observed in 2 sessions of treatment.</p><p><b>RESULTS</b>After treatment, FNFI in two groups increased significantly (both P < 0.01), but the improvement in observation group was better than that in control group (P < 0.01). In observation group, the basic recovery rate of FNFI was 87.5% (42/48), which was higher than that (67.9%, 36/53) in control group (P < 0.05).</p><p><b>CONCLUSION</b>The sticking needle and traction method o three points is the quite effective approach in the treatment of deviation of the mouth in intractable facial palsy.</p>


Assuntos
Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Pontos de Acupuntura , Terapia por Acupuntura , Face , Nervo Facial , Paralisia Facial , Terapêutica , Boca , Tração
18.
Artigo em Chinês | WPRIM | ID: wpr-254869

RESUMO

<p><b>OBJECTIVE</b>To observe the effects on function rehabilitation of vocal cord after vocal cord polyps surgery treated with acupuncture at Sheng's Four Points of Throat.</p><p><b>METHODS</b>Sixty cases were randomly divided into a combined therapy group of Four Points of Throat and medication (group 1, 30 cases) and a medication group (group 2, 30 cases). In group 1 Four Points of Throat were punctured and routine medication was applied; in group 2, only routine medication was applied. The scores of symptom-sign and status of voice were observed and analyzed before and after treatment in two groups.</p><p><b>RESULTS</b>At 4th day after the surgery, the improvement of the symptom-sign scores in group 1 was more significant than that in group 2 (P < 0.05); and the voice analysis status in group 1 was superior to that in group 2 (all P < 0.05). The total effective rate was 83.3% (25/30) in group 1, which was superior to that of 60.0% (18/30) in group 2 (P < 0.05).</p><p><b>CONCLUSION</b>The effect on function rehabilitation of vocal cord after vocal cord polyps surgery treated with the combined therapy group of Four Points of Throat and routine medication is favorable, superior to that with routine medication therapy.</p>


Assuntos
Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Pontos de Acupuntura , Doenças da Laringe , Reabilitação , Cirurgia Geral , Terapêutica , Procedimentos Cirúrgicos Otorrinolaringológicos , Faringe , Prega Vocal , Cirurgia Geral
19.
Huan Jing Ke Xue ; 29(6): 1533-7, 2008 Jun.
Artigo em Chinês | MEDLINE | ID: mdl-18763496

RESUMO

A laboratory-scale intermittently aerated membrane bioreactor was applied to treat synthetic household wastewater characterized with low organic matter and high nitrogen concentration. Experimental results showed that at the condition of HRT 12 h, aeration/non-aeration cycle 30 min/60 min and a very long SRT, more than 90% of COD and close 100% ammonia nitrogen could be removed, and the average removal efficiency of TN was more than 80%, but this treatment process seemed to be not available in phosphorus removal. Nitrification was accomplished quickly and completely in the system. The denitrification appeared to be the rate-limiting step for TN removal in the system. Furthermore, a positive linear correlation between the fouling rate and the MLSS concentration was founded, and the higher the MLSS concentration was, the higher fouling rate was.


Assuntos
Reatores Biológicos , Carbono/química , Nitrogênio/química , Eliminação de Resíduos Líquidos/métodos , Bactérias Anaeróbias/metabolismo , Bactérias Anaeróbias/fisiologia , Biofilmes , Cidades , Membranas Artificiais , Nitrogênio/isolamento & purificação , Nitrogênio/metabolismo , Fósforo/química , Fósforo/isolamento & purificação , Fósforo/metabolismo
20.
Neuroreport ; 19(5): 575-8, 2008 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-18388741

RESUMO

This study used event-related potentials (ERPs) to investigate the electrophysiological correlates of cognitive conflict in audiovisual integration during an audiovisual task. ERP analyses revealed: (i) the anterior N1 and P1 were elicited in both matched and mismatched conditions and (ii) audiovisual mismatched answers elicited a more negative ERP deflection at 490 ms (N490) than matched answers. Dipole analysis of the difference wave (mismatched minus matched) localized the generator of the N490 to the posterior cingulate cortex, which may be involved in the control and modulation of conflict processing of Chinese characters when visual and auditory information is mismatched.


Assuntos
Mapeamento Encefálico , Cognição/fisiologia , Conflito Psicológico , Potenciais Evocados/fisiologia , Estimulação Acústica/métodos , Adolescente , Adulto , Limiar Diferencial/fisiologia , Eletroencefalografia/métodos , Eletroculografia , Feminino , Humanos , Masculino , Estimulação Luminosa , Tempo de Reação/fisiologia
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