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1.
Schizophr Res ; 230: 53-60, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33677199

RESUMO

AIM: Schizophrenia and affective disorders all show high heterogeneity in clinical manifestations. A lack of objective biomarkers has long been a challenge in the clinical diagnosis of these diseases. In this study, we aimed to investigate the performance of niacin skin flushing in schizophrenia and affective disorders and determine its clinical potential as an auxiliary diagnostic marker. METHODS: In this case-control study, niacin skin-flushing tests were conducted in 613 patients (including 307 schizophrenia patients, 179 bipolar disorder patients, and 127 unipolar depression patients) and 148 healthy controls (HCs) with a modified method. Differences in niacin skin-flushing responses were compared with adjustment for gender, BMI, age, nicotine dependence, alcohol consumption and educational status. A diagnostic model was established based on a bivariate cut-off. RESULTS: Schizophrenia and affective disorders showed similar performance of niacin bluntness, characterized by attenuated flushing extent and reduced flushing rate. An innovative bivariate cut-off was established according to these two features, by which we could identify -patients with either schizophrenia or affective disorders from HCs with a sensitivity of 55.28%, a specificity of 83.56% and a positive predictive value of 93.66%. CONCLUSIONS: The niacin-induced skin flushing was prevalently blunted in patients with schizophrenia or affective disorders, indicating a promising potential as an auxiliary diagnostic marker in risk prediction and clinical management of these disorders. Additionally, the niacin-blunted subgroup implies a common biological basis in the investigated disorders, which provokes new thoughts in elucidating the pathological mechanisms.


Assuntos
Niacina , Esquizofrenia , Biomarcadores , Estudos de Casos e Controles , Humanos , Transtornos do Humor/diagnóstico , Transtornos do Humor/etiologia
2.
J Pharm Sci ; 110(3): 1111-1119, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33129837

RESUMO

Recently, new cationic antibacterial peptide OM19R has been designed with low minimum inhibitory concentration (MIC) values against some gram-negative bacteria, such as Escherichia coli, Salmonella, and Shigella. However, this hybrid peptide, like most antibacterial peptides, has low enzyme stability and short half-life, which, in turn, increases the drug's cost. In this study, an antibacterial peptide (OM19r-8) was obtained containing some D-Arg amino acids. The new preparations were carried out through the replacement of l-Arginine by d-Arginine and the addition of PEG chains. Firstly, eight OM19r series of antibacterial peptides were obtained by designing D-Arg. Then, a polyethylene glycol-modified product mPEG5-butyrALD-OM19r-8 (mPEG5-OM19r-8) was isolated and purified by reverse-phase high-performance liquid chromatography (RT-HPLC). The enzyme stability test showed that the resistance of antibacterial peptide OM19r-8 to protease degradation increased by 4-32-fold. Moreover, the Time-kill studies showed that the germicidal kinetics curves of mPEG5-OM19r-8 and OM19r-8 to Escherichia coli had a similar trend, thus suggesting that PEG modification has an acceptable effect on the activity of the original peptide. Furthermore, the elimination of half-life (28.09 ± 2.81min) of mPEG5-OM19r-8, and the area under the drug concentration-time curve (2686.48 ± 651.36min∗ug/ml) was significantly prolonged. The current study demonstrates an example that optimizes the AMP by utilizing L-to-D amino acid replacement and including PEG chains. These results provide useful data for the clinical application of the mPEG5-OM19r-8.


Assuntos
Bactérias Gram-Negativas , Peptídeos , Antibacterianos/farmacologia , Testes de Sensibilidade Microbiana , Polietilenoglicóis , Proteínas Citotóxicas Formadoras de Poros
3.
Artigo em Chinês | MEDLINE | ID: mdl-31245957

RESUMO

OBJECTIVE: To investigate the effects of genipin on promoting brown adipose tissue activation and white adipose tissue browning. METHODS: The male C57BL/6J mice were divided into three groups: normal control group, genipin group and cold-stimulus group.Genipin group were treated consecutively with genipin at a dose of 15 mg/kg once a day for 9 days, normal control group were treated with the saline.The mice with cold-stimulus were exposed to 4℃ environment for 5 days.Daily food amount and body weight were measured.Morphological changes were observed in the subscapular region, inguinal region and epididymis around the adipose tissue.The expression of uncoupling protein 1 (UCP1) was determined by real-time PCR and Western blot respectively. RESULTS: The wet weight of white fat in genipin-treated mice was decreased by 16% , and 28% in that of cold-stimulus mice, compared with the normal control group (P<0.05).After treatments of genipin and cold-stimulus, the color of white adipose tissues was darker, and the size of lipid droplets in adipocytes was smaller, whereas the number was increased.Compared with the normal control group, UCP1 expression was increased obviously in fat tissues, including the subcutaneous and visceral white adipose tissues, and brown adipose tissue after treated with genipin and cold-stimulus (P<0.05). CONCLUSION: Genipin promoted activation of brown adipose tissue and browning of white adipose tissue by upregulating UCP1 expression, which could contribute to the loss of body weight against obesity.


Assuntos
Tecido Adiposo Marrom , Tecido Adiposo Branco , Colagogos e Coleréticos , Iridoides , Proteína Desacopladora 1 , Tecido Adiposo Marrom/efeitos dos fármacos , Tecido Adiposo Branco/efeitos dos fármacos , Animais , Colagogos e Coleréticos/farmacologia , Iridoides/farmacologia , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Obesidade/tratamento farmacológico , Proteína Desacopladora 1/efeitos dos fármacos , Regulação para Cima
4.
Int J Chron Obstruct Pulmon Dis ; 11: 2965-2975, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27932876

RESUMO

PURPOSE: Patients with COPD often experience skeletal muscle dysfunction. For those who are unable or unwilling to undertake physical training, neuromuscular electrical stimulation (NMES) may provide an alternative method of rehabilitation. The purpose of this meta-analysis was to investigate the controversial topic of whether this therapy is effective in patients with moderate-to-severe COPD. PATIENTS AND METHODS: We pooled data from nine trials published between January 9, 2002 and January 4, 2016 across PubMed, Embase, Cochrane Central Register of Controlled Trials, Google Scholar, and relevant websites for randomized controlled trials. In these trials, patients with moderate-to-severe COPD were randomly allocated to receive NMES. Primary outcomes were quadricep strength and exercise capacity. The secondary outcome was health-related quality of life. RESULTS: We extracted data from 276 patients. NMES contributed to statistically improved quadricep strength (standardized mean difference 1.12, 95% confidence interval [CI] 0.64-1.59, I2=54%; P<0.00001) and exercise capacity, including longer exercise distance (weighted mean difference 51.53, 95% CI 20.13-82.93, I2=90%; P=0.001), and longer exercise endurance (standardized mean difference 1.11, 95% CI 0.14-2.08, I2=85%; P=0.02). There was no significant difference in St George's Respiratory Questionnaire scores (weighted mean difference -0.07, 95% CI -2.44 to 2.30, I2=56%; P=0.95). CONCLUSION: NMES appears an effectual means of enhancing quadricep strength and exercise capacity in moderate-to-severe COPD patients. Further research is demanded to clarify its effect on other outcomes and determine the optimal parameters for an NMES program.


Assuntos
Terapia por Estimulação Elétrica/métodos , Pulmão/fisiopatologia , Força Muscular , Doença Pulmonar Obstrutiva Crônica/reabilitação , Músculo Quadríceps/inervação , Idoso , Distribuição de Qui-Quadrado , Terapia por Estimulação Elétrica/efeitos adversos , Tolerância ao Exercício , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Contração Muscular , Doença Pulmonar Obstrutiva Crônica/diagnóstico , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto , Recuperação de Função Fisiológica , Resultado do Tratamento
5.
Nan Fang Yi Ke Da Xue Xue Bao ; 36(8): 1069-74, 2016 Aug 20.
Artigo em Chinês | MEDLINE | ID: mdl-27578574

RESUMO

OBJECTIVE: To investigate the effects of inspiratory muscle training followed by non-invasive positive pressure ventilation in patients with severe chronic obstructive pulmonary disease (COPD). METHODS: This investigator-initiated randomized, controlled trial recruited 88 patients with stable GOLD stage IV COPD, who were randomized into 4 equal groups to continue oxygen therapy (control group) or to receive inspiratory muscle training followed by non-invasive positive pressure ventilation (IMT-NPPV group), inspiratory muscle training only (IMT group), or noninvasive positive pressure ventilation only (NPPV group) for at least 8 weeks. The outcomes of the patients were assessed including the quality of life (SRI scores), maximum inspiratory pressure (MIP), maximum expiratory pressure (MEP), dyspnea (MRC scores), 6-min walking distance (6MWD) and lung function. RESULTS: s Compared to baseline values, SRI scores, 6MWT and MRC scores increased significantly after 8 weeks in IMT-NPPV, IMT and NPPV groups, and the improvements were significantly greater in IMT-NPPV group than in IMT and NPPV groups (P<0.05 for all). In IMT-NPPV and IMT groups, MIP and MEP increased significantly after the training (P<0.05), and the improvement was more prominent in IMT-NPPV group (P<0.05). No significant changes were found in pulmonary functions in the groups after 8 weeks of treatment (P>0.05). CONCLUSION: Inspiratory muscle training followed by non-invasive positive pressure ventilation, compared with inspiratory muscle training or non-invasive positive pressure ventilation alone, can better enhance the quality of life, strengthen the respiratory muscles, improve exercise tolerance and relieve the dyspnea in patients with COPD.


Assuntos
Respiração com Pressão Positiva , Doença Pulmonar Obstrutiva Crônica/terapia , Músculos Respiratórios/fisiopatologia , Dispneia/terapia , Tolerância ao Exercício , Humanos , Pulmão/fisiopatologia , Ventilação não Invasiva , Condicionamento Físico Humano , Qualidade de Vida
6.
BMC Pharmacol Toxicol ; 17: 16, 2016 Apr 14.
Artigo em Inglês | MEDLINE | ID: mdl-27075663

RESUMO

BACKGROUND: Nonalcoholic steatohepatitis (NASH) is characterized by fat accumulation in the hepatocyte, inflammation, liver cell injury, and varying degrees of fibrosis, and can lead to oxidative stress in liver. Here, we investigated whether Salidroside, a natural phenolic antioxidant product, can protect rat from liver injury during NASH. METHODS: NASH model was established by feeding the male SD rats with high-fat and high-cholesterol diet for 14 weeks. Four groups of male SD rats including, normal diet control group, NASH model group, and Salidroside treatment group with150mg/kg and 300 mg/kg respectively, were studied. Salidroside was given by oral administration to NASH in rats from 9 weeks to 14 weeks. At the end of 14 weeks, liver and serum were harvested, and the liver injury, oxidative stress and histological features were evaluated. RESULTS: NASH rats exhibited significant increases in the following parameters as compared to normal diet control rats: fat droplets with foci of inflammatory cell infiltration in the liver. ALT, AST in serum and TG, TC in hepatocyte elevated. Oxidative responsive genes including CYP2E1 and Nox2 increased. Additionally, NASH model decreased antioxidant enzymes SOD, GSH, GPX, and CAT in the liver due to their rapid depletion after battling against oxidative stress. Compared to NASH model group, treatment rats with Salidroside effectively reduced lipid accumulation, inhibited liver injury in a does-dependent manner. Salidroside treatment restored antioxidant enzyme levels, inhibited expression of CYP2E1 and Nox2 mRNA in liver, which prevented the initial step of generating free radicals from NASH. CONCLUSION: The data presented here show that oral administration of Salidroside prevented liver injury in the NASH model, likely through exerting antioxidant actions to suppress oxidative stress and the free radical-generating CYP2E1 enzyme, Nox2 in liver.


Assuntos
Antioxidantes/uso terapêutico , Glucosídeos/uso terapêutico , Fígado/efeitos dos fármacos , Hepatopatia Gordurosa não Alcoólica/prevenção & controle , Estresse Oxidativo/efeitos dos fármacos , Fenóis/uso terapêutico , Administração Oral , Animais , Antioxidantes/administração & dosagem , Citocromo P-450 CYP2E1/química , Citocromo P-450 CYP2E1/genética , Citocromo P-450 CYP2E1/metabolismo , Dieta Hiperlipídica/efeitos adversos , Relação Dose-Resposta a Droga , Repressão Enzimática/efeitos dos fármacos , Glucosídeos/administração & dosagem , Gotículas Lipídicas/efeitos dos fármacos , Gotículas Lipídicas/metabolismo , Gotículas Lipídicas/patologia , Metabolismo dos Lipídeos/efeitos dos fármacos , Peroxidação de Lipídeos/efeitos dos fármacos , Fígado/imunologia , Fígado/metabolismo , Fígado/patologia , Masculino , Glicoproteínas de Membrana/antagonistas & inibidores , Glicoproteínas de Membrana/genética , Glicoproteínas de Membrana/metabolismo , NADPH Oxidase 2 , NADPH Oxidases/antagonistas & inibidores , NADPH Oxidases/genética , NADPH Oxidases/metabolismo , Hepatopatia Gordurosa não Alcoólica/imunologia , Hepatopatia Gordurosa não Alcoólica/metabolismo , Hepatopatia Gordurosa não Alcoólica/patologia , Oxirredutases/química , Oxirredutases/metabolismo , Fenóis/administração & dosagem , Distribuição Aleatória , Ratos Sprague-Dawley , Regulação para Cima/efeitos dos fármacos
7.
Chin Med J (Engl) ; 129(6): 690-5, 2016 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-26960372

RESUMO

BACKGROUND: Schizophrenia (SCZ) is a severe, debilitating, and complex psychiatric disorder with multiple causative factors. An increasing number of studies have determined that rare variations play an important role in its etiology. A somatic mutation is a rare form of genetic variation that occurs at an early stage of embryonic development and is thought to contribute substantially to the development of SCZ. The aim of the study was to explore the novel pathogenic somatic single nucleotide variations (SNVs) and somatic insertions and deletions (indels) of SCZ. METHODS: One Chinese family with a monozygotic (MZ) twin pair discordant for SCZ was included. Whole exome sequencing was performed in the co-twin and their parents. Rigorous filtering processes were conducted to prioritize pathogenic somatic variations, and all identified SNVs and indels were further confirmed by Sanger sequencing. RESULTS: One somatic SNV and two somatic indels were identified after rigorous selection processes. However, none was validated by Sanger sequencing. CONCLUSIONS: This study is not alone in the failure to identify pathogenic somatic variations in MZ twins, suggesting that exonic somatic variations are extremely rare. Further efforts are warranted to explore the potential genetic mechanism of SCZ.


Assuntos
Exoma , Mutação , Esquizofrenia/genética , Gêmeos Monozigóticos/genética , Adulto , Humanos , Masculino , Análise de Sequência de DNA
8.
Zhongguo Zhong Yao Za Zhi ; 41(20): 3727-3732, 2016 Oct.
Artigo em Chinês | MEDLINE | ID: mdl-28929648

RESUMO

The tocopherol cyclase was one of the key enzymes in plant vitamin E biosynthesis pathway. According to the study of Carthamus tinctorius transcriptome data,the Tocopherol cyclase gene was obtained using RT-PCR techniques and named CtTC . Bioinformatics analysis showed theopen reading frame (ORF)of CtTC was 1 524 bp. The putative protein contained 507 amino acids with a predicted molecular mass of 62.9 kDa and theoretically isoelectric point was 5.01.Signal peptide analysis showed that it was a non secretory protein, and there was no signal peptide. The subcellular localization showed that the CtTC protein was located in the chloroplast. The expression of CtTC gene in safflower seeds at different development stages was determined by quantitative real-time PCR, it was found that the highest expression level of CtTC gene was detected in 50 DAF.Quantitative RT-PCR analysis suggested that expression of CtTC is induced and strengthened by drought stresses. This research provided a candidate gene for metabolic engineering of vitamin E and resisting stress.


Assuntos
Carthamus tinctorius/enzimologia , Transferases Intramoleculares/genética , Proteínas de Plantas/genética , Proteínas de Ligação a RNA/genética , Carthamus tinctorius/genética , Cloroplastos/enzimologia , Clonagem Molecular , Sementes/enzimologia , Vitamina E/biossíntese
9.
Zhongguo Shi Yan Xue Ye Xue Za Zhi ; 23(4): 1049-52, 2015 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-26314444

RESUMO

OBJECTIVE: To study the diagnostic value of (18)F-FDG-PET/CT in multiple myeloma (MM). METHODS: A total of 66 patients, who were highly suspected of MM in our hospital from July 2012 to December 2014, were chosen as study objects. All patients were diagnosed or excluded by pathological examination. All patients were detected by (18)F-FDG-PET/CT, and its diagnostic value was analyzed. The number of focuses were counted. RESULTS: Out of 66 patients 59 patients (89.39%) were diagnosed with multiple myeloma. The sensitivity of PET was 98.31%, the specificity of PET was 85.71%, the Youden index was 0.8402; the sensitivity of CT was 96.61%, the specificity of CT was 85.71%, the Youden index was 0.8232; the sensitivity of PET/CT was 100.00%, the specificity of PET/CT was 83.33%, the Youden index was 0.8333. In 59 MM patients, 635 focuses were detected, out of them 572 focuses (90.08%) were detected by CT, 593 focuses (93.39%) were detected by PET, 530 focuses (83.46%) were coincided on PET/CT. CONCLUSION: (18)F-FDG-PET/CT has diagnostic value for multiple myeloma, and it can be used in locating and counting focuses, as well as in evaluating the treatment efficacy and guiding the clinical work.


Assuntos
Mieloma Múltiplo , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios X , Fluordesoxiglucose F18 , Humanos , Imagem Multimodal
10.
Zhongguo Dang Dai Er Ke Za Zhi ; 17(8): 837-40, 2015 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-26287349

RESUMO

OBJECTIVE: To examine serum 25-hydroxyvitamin D levels in children with attention deficit hyperactivity disorder (ADHD) and to explore the relationship between vitamin D level and ADHD. METHODS: Ninety-seven children with ADHD who were diagnosed according to DSM-V were selected as the ADHD group, including 46 cases of ADHD-I, 10 cases of ADHD-HI, and 41 cases of ADHD-C. Ninety-seven healthy children served as the control group. Serum levels of 25-hydroxyvitamin D were measured using electrochemiluminescence immunoassay. RESULTS: Mean serum levels of 25-hydroxyvitamin D in the ADHD group (17±7 ng/mL) were significantly lower than in the control group (23±8 ng/mL; P<0.01). The serum levels of 25-hydroxyvitamin D in the three subtypes groups of ADHD (ADHD-I, ADHD-HI, and ADHD-C) were all lower than in the control group (P<0.05). The rates of vitamin D insufficiency, deficiency or normal in the ADHD group were different from the control group (P<0.01). The distributions of vitamin D levels in the three subtypes groups of ADHD were all different from the control group (P<0.05). CONCLUSIONS: Serum levels of 25-hydroxyvitamin D in children with ADHD are lower than in healthy children, suggesting vitamin D level might be related to ADHD.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade/sangue , Vitamina D/análogos & derivados , Criança , Humanos , Vitamina D/sangue
11.
J Diabetes Complications ; 28(5): 711-4, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24927647

RESUMO

AIMS: To investigate the relationship between serum phospholipid omega-3 polyunsaturated fatty acids (ω-3 PUFAs) and insulin resistance (IR) in patients with type 2 diabetes mellitus (T2DM) and non-alcoholic fatty liver disease (NAFLD). METHODS: 51 patients with T2DM and NAFLD (T2DM+NAFLD group), 50 with T2DM alone (T2DM group), 45 with NAFLD alone (NAFLD group), and 42 healthy control subjects (NC group) were studied. Serum ω-3 PUFA profiles were analyzed by gas chromatography, and alanine aminotransferase (ALT), aspartate aminotransferase (AST), γ-glutamyltransferase (GGT), and serum lipid concentrations were measured. Insulin resistance was assessed by the homeostasis model assessment method (HOMA-IR). RESULTS: HOMA-IR levels were higher in the T2DM+NAFLD group than in the T2DM, NAFLD and NC groups (p<0.05), as were ALT, AST, GGT, total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and triglyceride (TG) concentrations (p<0.05). Conversely, serum ω-3 PUFA levels were significantly lower in the T2DM+NAFLD group than in the other groups (p<0.05). The ω-3 PUFA level was negatively correlated with HOMA-IR, TC, LDL-C and TG. CONCLUSIONS: Serum phospholipid ω-3 PUFA levels were significantly decreased in patients with T2DM and NAFLD, and were negatively related with insulin resistance. Thus, reduced ω-3 PUFAs may play an important role in the development of T2DM and NAFLD.


Assuntos
Diabetes Mellitus Tipo 2/metabolismo , Ácidos Graxos Ômega-3/sangue , Resistência à Insulina , Hepatopatia Gordurosa não Alcoólica/metabolismo , Idoso , Estudos de Casos e Controles , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/complicações , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/sangue , Hepatopatia Gordurosa não Alcoólica/complicações , Fosfolipídeos/sangue
12.
Tumour Biol ; 35(5): 4331-7, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24464924

RESUMO

Studies have shown that SCC-S2 can be detected in cancer cells, but its relation with thyroid cancer remains uncertain. In the current study, we investigated SCC-S2 expression in thyroid cancer from the immune cell perspective and tumor tissue perspective. Levels of SCC-S2 in CD4+ T cells, CD8+ T cells, monocytes, natural killer (NK) T cells, tumor tissues, and adjacent noncancerous thyroid tissues were tested by real-time reverse transcription PCR and Western blot. Results revealed that mRNA and protein levels of SCC-S2 were significantly increased in peripheral CD4+ (mRNA, 1.90-fold; protein, 1.55-fold) and CD8+ T cells (mRNA, 2.37-fold; protein, 1.72-fold) but not monocytes and NKT cells in patients than in healthy donors. Further elevated mRNA level but not protein expression was observed in tumor-infiltrating CD4+ T cells, whereas both mRNA level and protein expression were further increased in tumor-infiltrating CD8+ T cells. Also, mRNA and protein levels of SCC-S2 in thyroid tissues were significantly elevated than those in adjacent noncancerous thyroid tissues. Moreover, patients with cervical lymph node metastasis presented clearly higher mRNA and protein expression of SCC-S2 compared to those without cervical lymph node metastasis (p < 0.05). These results suggest that SCC-S2 may play roles in affecting both immune cells and tumor cells in the thyroid and may indicate a novel pathway for understanding the pathogenesis of the disease.


Assuntos
Linfócitos T CD4-Positivos/química , Linfócitos T CD8-Positivos/química , Carcinoma/etiologia , Proteínas/fisiologia , Neoplasias da Glândula Tireoide/etiologia , Adulto , Idoso , Apoptose , Proteínas Reguladoras de Apoptose , Carcinoma/química , Carcinoma/patologia , Carcinoma Papilar , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Proteínas/análise , Câncer Papilífero da Tireoide , Neoplasias da Glândula Tireoide/química , Neoplasias da Glândula Tireoide/patologia , Regulação para Cima
13.
Chin Med J (Engl) ; 126(14): 2676-80, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23876895

RESUMO

BACKGROUND: MicroRNAs (miRNAs) control gene expression by destabilizing target transcripts and inhibiting their translation. Aberrant expression of miRNAs has been described in many human diseases, including schizophrenia. However, the effects on miRNA expression in response to antipsychotic treatment in peripheral circulation have not been thoroughly examined. METHODS: Using quantitative real-time PCR (qRT-PCR), We quantified the expression of seven candidate miRNAs in plasma samples of 40 first-episode schizophrenics before and after antipsychotic treatment. The patients were all treated with risperidone and achieved remission in 1 year. RESULTS: Compared with the baseline, the expression levels of miR-365 and miR-520c-3p were significantly down-regulated after 1 year of risperidone treatment (P < 0.001). There were no significant correlations between the clinical symptoms and the expression levels of these two miRNAs (P > 0.05). CONCLUSIONS: This study analyzed possible circulating miRNAs in response to antipsychotic monotherapy for schizophrenia, the further mechanism need to be confirmed.


Assuntos
Antipsicóticos/uso terapêutico , MicroRNAs/sangue , Risperidona/uso terapêutico , Esquizofrenia/tratamento farmacológico , Adulto , Feminino , Humanos , Masculino , Esquizofrenia/genética
14.
Zhonghua Gan Zang Bing Za Zhi ; 20(2): 131-5, 2012 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-22464786

RESUMO

To establish the Chang liver cell line stably overexpressing human uncoupling protein 2 (UCP2) and observe the effect of UCP2 on mitochondrial membrane potential (MMP) and reactive oxygen species (ROS). The Chang liver cell line was transfected with recombinant plasmid containing full-length human UCP2 cDNA (pcDNA3.1-hUCP2) or pcDNA3.1 empty vector. The stable cell line was established by antibiotic screening with Zeocin. UCP2 expression was detected by Western blotting and immunocytochemistry. The UCP2 overexpressing cells were pretreated with genipin at various doses (25, 50 and 100 munol/L). MMP and intracellular ROS were detected by fluorescence spectrophotometry. The total normalized protein content in UCP2 overexpressing cells was 1.6-fold higher than that in unmanipulated normal cells. The fluorescence intensities of Rhodamine123 and DCFH-DA in UCP2 overexpressing Chang liver cells (11.11+/-2.76 and 4.97+/-0.62, respectively) were significantly lower than those in unmanipulated normal cells (15.56+/-2.55, P less than 0.01 and 6.14+/-1.25, P less than 0.05, respectively) and in cells transfected with empty vector (16.11+/-2.93, P less than 0.01 and 6.23+/-1.13, P less than 0.05, respectively). Treatment of UCP2 overexpressing cells with 25, 50 and 100 munol/L genipin caused a dose-dependent increase in fluorescence intensities of Rhodamine123 (14.89+/-2.89, 17.89+/-2.93 and 24.00+/-2.55, respectively, all P less than 0.01) and DCFH-DA (9.16+/-0.78, 10.84+/-1.09 and 11.83+/-1.25, respectively, all P less than 0.01). The Chang liver cell line stably overexpressing UCP2 was established successfully. Using this cell system, UCP2 was found to play a role in mitochondrial function by regulating MMP and ROS.


Assuntos
Canais Iônicos/biossíntese , Potencial da Membrana Mitocondrial , Proteínas Mitocondriais/biossíntese , Espécies Reativas de Oxigênio/metabolismo , Linhagem Celular , Hepatócitos/metabolismo , Humanos , Proteína Desacopladora 2
15.
Chin Med J (Engl) ; 124(16): 2448-51, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21933585

RESUMO

BACKGROUND: Nucleophosmin plays a critical role in embryonic development. This study aimed to examine the expression pattern of nucleophosmin in glandular epithelium of human endometrium during the menstrual cycle. METHODS: Endometrial tissues used for this study were obtained from 46 non-pregnant patients who underwent hysterectomy which had been performed to treat benign diseases. Nucleophosmin expression was assessed by in situ hybridization and immunohistochemistry. RESULTS: At the early-, mid- and late-proliferative phase, nucleophosmin mRNA was highly expressed in glandular epithelium of human endometrium. At the secretory phase, the expression of nucleophosmin mRNA was reduced in glandular epithelium in early-secretory phase, and the expression in mid- and late-secretory phases was not detected. Similarly, nucleophosmin protein was strongly expressed in endometrial glands throughout the proliferative phase, but was gradually reduced during secretory phase. CONCLUSION: Nucleophosmin mRNA and protein are expressed in glandular epithelium of human endometrium throughout the menstrual cycle.


Assuntos
Endométrio/metabolismo , Ciclo Menstrual/metabolismo , Proteínas Nucleares/metabolismo , Adulto , Feminino , Humanos , Imuno-Histoquímica , Hibridização In Situ , Técnicas In Vitro , Ciclo Menstrual/genética , Pessoa de Meia-Idade , Proteínas Nucleares/genética
16.
Am J Med Genet B Neuropsychiatr Genet ; 156B(6): 737-48, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21761555

RESUMO

Monoamine oxidase A (MAOA) plays a critical role in the metabolism of monoamine neurotransmitters including serotonin (5-HT), norepinephrine (NE), and dopamine (DA). Genetic studies have found an association between MAOA and attention-deficit/hyperactivity disorder (ADHD), especially impulsivity. However, there has been inconsistency among studies which may be due to the complexity and heterogeneity of ADHD, including its sexual dimorphism and the presence of several subtypes. We conducted transmission disequilibrium tests (TDTs) in 1,253 trios and found no association between five single nucleotide polymorphisms (SNPs) of MAOA with ADHD in general or in the predominantly inattentive (ADHD-I) or combined types (ADHD-C), but with the predominantly hyperactive/impulsivity type (ADHD-HI). The association with MAOA was restricted to males, especially males with ADHD-HI. Logistic regression analyses of data from 1,824 cases and 957 controls did not indicate any association. We used analysis of covariance to analyze the association between MAOA genotype with the "inhibit" factor of the Behavior Rating Inventory of Executive Function (BRIEF) in 640 probands and performance on the Stroop test in 810 probands. Probands homozygous for risk alleles found in the TDT test had higher "inhibit" scores on the BRIEF scale which represents more severe impulsivity; this results also was restricted to males. No association was found with Stroop test performance. In conclusion, our results provide some evidence that MAOA may be associated with the ADHD-HI subtype and support the association between MAOA and impulsivity, which may be a potential endophenotype of ADHD. However, the results were strongly influenced by gender.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade/genética , Predisposição Genética para Doença , Comportamento Impulsivo/genética , Monoaminoxidase/genética , Adolescente , Estudos de Casos e Controles , Criança , China , Feminino , Genótipo , Haplótipos/genética , Humanos , Masculino , Neurotransmissores/metabolismo , Fenótipo , Polimorfismo de Nucleotídeo Único , Teste de Stroop
17.
Zhonghua Nei Ke Za Zhi ; 49(4): 305-8, 2010 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-20627036

RESUMO

OBJECTIVE: To investigate the relationship between serum omega-3 polyunsaturated fatty acid (omega-3PUFA) and insulin resistance (IR) in patients with type 2 diabetes mellitus and non-alcoholic fatty liver disease (NAFLD). METHODS: This trial involved 51 patients of type 2 diabetes mellitus with NAFLD (G4 group), 50 patients of type 2 diabetes alone (G3 group), 45 patients of NAFLD alone (G2 group) and 42 healthy control subjects (G1 group). Serum omega-3PUFA profile was analyzed with capillary gas chromatography. Insulin resistance was assessed by homeostasis model assessment (HOMA-IR). ALT, AST, gamma-glutamyltransferase (GGT) and serum lipids were measured. RESULTS: The levels of HOMA-IR were higher in G4 group than those in G3, G2 and G1 group (4.90 + or - 2.54 vs 2.38 + or - 1.23, 2.20 + or - 1.15, 1.13 + or - 0.42; P < 0.05). The level of ALT, AST, GGT, TC, TG, LDL-C were higher in G4 group than those in G3, G2 and G1 group (P < 0.05). The level of omega-3PUFA was significantly lower in G4 group than those in G3, G2 and G1 group (5.68 + or - 2.02 vs 7.17 + or - 2.38, 6.97 + or - 2.32, 10.08 + or - 2.76; P < 0.05). omega-3PUFA concentration was negatively correlated with HOMA-IR, TC, TG and LDL-C (r = -0.491, -0.376, -0.462, -0.408, P < 0.05). CONCLUSIONS: Serum omega-3PUFA is significantly decreased in patients with type 2 diabetes mellitus and NAFLD. Serum omega-3PUFA is negatively correlated with insulin resistance. omega-3PUFA plays a very important role in the development of diabetes mellitus and NAFLD.


Assuntos
Diabetes Mellitus Tipo 2/sangue , Ácidos Graxos Ômega-3/sangue , Fígado Gorduroso/sangue , Resistência à Insulina , Idoso , Estudos de Casos e Controles , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/metabolismo , Fígado Gorduroso/complicações , Fígado Gorduroso/metabolismo , Feminino , Humanos , Pessoa de Meia-Idade
18.
Behav Genet ; 40(3): 357-65, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-19941049

RESUMO

The catechol-O-methyltransferase (COMT) gene contains a functional polymorphism (Val158Met) affecting the activity of the enzyme, and the monoamine oxidase A (MAOA) gene contains a VNTR polymorphism (MAOA-uVNTR) that affects the transcription of the gene. COMT and MAOA each contribute to the enzymatic degradation of dopamine and noradrenaline. Prefrontal cortical (PFC) function, which plays an important role in individual cognitive abilities, including intelligence, is modulated by dopamine. Since our previous association studies between attention deficit hyperactivity disorder (ADHD) and these two functional polymorphisms consistently showed the low activity alleles were preferentially transmitted to inattentive ADHD boys, the goal of the present study was to test the hypothesis that the interaction between COMT Val158Met and MAOA-uVNTR may affect the intelligence in a clinical sample of Chinese male ADHD subjects (n = 264). We found that the COMT x MAOA interaction significantly predicted full scale (FSIQ) and performance (PIQ) IQ scores (P = 0.039, 0.011); the MAOA-uVNTR significantly predicted FSIQ, PIQ and verbal IQ (VIQ) (P = 0.009, 0.019, 0.038); COMT Val158Met independently had no effect on any of the IQ scores. Only the COMT x MAOA interaction for PIQ remained significant after a Bonferroni correction. Among all combined genotypes, the valval-3R genotype predicted higher intelligence, (average 106.7 +/- 1.6, 95% C.I. 103.7-109.8 for FSIQ), and the valval-4R predicted lower intelligence (average 98.0 +/- 2.3, 95% C.I. 93.5-102.6 for FSIQ). These results suggest that there is an inverted U-shaped relationship between intelligence and dopaminergic activity in our sample. Our finding that gene-gene interaction between COMT and MAOA predicts the intelligence of ADHD boys in China is intriguing but requires replication in other samples.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade/etnologia , Transtorno do Deficit de Atenção com Hiperatividade/genética , Catecol O-Metiltransferase/genética , Epistasia Genética , Inteligência/genética , Repetições Minissatélites/genética , Monoaminoxidase/genética , Polimorfismo Genético , Adolescente , Criança , China , Dopamina/metabolismo , Genótipo , Humanos , Testes de Inteligência , Masculino
19.
Beijing Da Xue Xue Bao Yi Xue Ban ; 41(3): 285-90, 2009 Jun 18.
Artigo em Chinês | MEDLINE | ID: mdl-19727210

RESUMO

OBJECTIVE: To investigate the association of 5-HT(2A) receptor gene (HTR2A)-1438A/G, Catechol-O-methyltransferase (COMT) gene Val158Met, Monoamine oxidase A ( MAOA ) gene 30 bp-VNTR(MAOA-uVNTR)polymorphisms, and the educational attainment level of the parents with the intelligence of attention deficit hyperactivity disorder (ADHD) in China. METHODS: A total of 485 DSM-IV ADHD children of Chinese Han descent were included, both complete IQ evaluation, HTR2A-1438A/G, COMT gene Val158Met, and MAOA-uVNTR genotyping results were obtained. The quantitative traits of psychometric IQ were calculated by using the Chinese Wechsler Intelligence Scale for Children (C-WISC). The multifactor linear regression analysis was used to test the associated factors on intelligence. RESULTS: Analyses revealed that ADHD children with low enzymatic activity (3R for males, 3R3R for females) of MAOA-uVNTR performed better on Full Scale IQ (FIQ) than did patients with high enzymatic activity (4R for males, 3R4R/4R4R for females) [(102.6+/-12.4) vs (100.3+/-11.7), P=0.078]. The patients with high-enzymatic activity (ValVal) of COMT gene Val158Met performed significantly better on FIQ than did patients with mid-low enzymatic activity (ValMet and MetMet)[(103.5+/-13.6) vs (100.5+/-11.5), P=0.036]. ADHD children with GG genotype of HTR2A-1438A/G performed significantly better on some aspects of C-WISC test (Full Scale IQ and Verbal Scale IQ) than did children with GA and AA genotypes [FIQ :(106.9+/-10.7) vs (100.7+/-12.3) vs (101.7+/-12.9), P=0.003; VIQ: (110.1+/-10.6) vs (103.5+/-12.1) vs (105.1+/-13.2), P=0.001]. The educational attainment level of the parents was associated with all the aspects of C-WISC test (Full Scale IQ, Verbal Scale IQ, and Performance Scale IQ). The multiple linear regression analysis showed that the genotype of HTR2A-1438A/G had significant correlation with FIQ, VIQ and PIQ; while the educational attainment level of the mother had significant correlation with FIQ and VIQ. CONCLUSION: The HTR2A-1438A/G polymorphism and the educational attainment level of the mother were associated with the intelligence of ADHD children in China.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade/genética , Transtorno do Deficit de Atenção com Hiperatividade/psicologia , Inteligência , Receptor 5-HT2A de Serotonina/genética , Adolescente , Criança , China , Escolaridade , Feminino , Estudos de Associação Genética , Genótipo , Humanos , Testes de Inteligência , Masculino , Mães , Polimorfismo Genético
20.
Cytokine ; 46(2): 251-9, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-19349195

RESUMO

Activin, a member of the TGF-beta superfamily, inhibits the proliferation of breast cancer cells. Activin interacts with its type I and type II receptors to induce phosphorylation of intracellular signaling molecules known as Smads. Previous studies showed that mouse ARIP2 can reduce activin signaling by interacting with activin type II receptors (ActRIIs); however, the activity of ARIP2 in breast cancer is still unclear. In this study, we used RT-PCR to obtain a human homologue of mouse ARIP2, human activin receptor-interacting protein 2 (hARIP2). Like murine ARIP2, hARIP2 has a PDZ domain in its NH2-terminal region and can interact specifically with ActRIIs. Overexpression of hARIP2 reduced activin-induced transcriptional activity and enhanced cell proliferation and colony formation in human breast adenocarcinoma MCF-7 cells and MDA-MB-231 cells. However, down-regulation of hARIP2 expression by RNAi enhanced activin-induced transcriptional activity and reduced cell proliferation and colony formation. Immunohistochemistry revealed that hARIP2 was expressed more frequently and much more intensely in malignant breast tissues such as simple carcinoma, invasive ductal carcinoma and mucinous adenocarcinoma than in benign hyperplasia or fibroadenoma cases. These results suggest that hARIP2 is a putative growth-promoting factor involved in breast tumorigenesis and tumor development.


Assuntos
Receptores de Activinas Tipo II/metabolismo , Neoplasias da Mama/metabolismo , Proteínas de Transporte/metabolismo , Proteínas de Membrana/metabolismo , Receptores de Activinas Tipo II/genética , Ativinas/genética , Ativinas/metabolismo , Proteínas Adaptadoras de Transdução de Sinal/metabolismo , Sequência de Aminoácidos , Animais , Sequência de Bases , Mama/metabolismo , Mama/patologia , Neoplasias da Mama/patologia , Proteínas de Transporte/genética , Linhagem Celular Tumoral , Proliferação de Células , Feminino , Humanos , Proteínas de Membrana/genética , Camundongos , Dados de Sequência Molecular , Isoformas de Proteínas/genética , Isoformas de Proteínas/metabolismo , RNA Interferente Pequeno/genética , RNA Interferente Pequeno/metabolismo , Transcrição Genética , Técnicas do Sistema de Duplo-Híbrido
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