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1.
Trop Anim Health Prod ; 56(8): 359, 2024 Oct 26.
Artigo em Inglês | MEDLINE | ID: mdl-39460847

RESUMO

Egg quality is a vital factor in the poultry industry. High-quality eggs not only meet consumer expectations for appearance, taste, and nutritional value but also have high marketability, profitability, and consumer satisfaction. Accordingly, we executed our research with the purpose of determining chromosomal regions and genetic markers associated with egg quality in an F2 cross-bred chicken population under tropical conditions; we determined these through a genome-wide association study and quantitative trait locus (QTL) mapping. This population was created by cross-breeding the L2 line of Taiwan Country chickens, which is adapted to local conditions in Taiwan, with an experimental line (R-line) of Rhode Island Red layer chickens, which was developed by the French National Research Institute for Agriculture, Food and the Environment. A 60 K single nucleotide polymorphism (SNP) genotyping array for chickens was employed to execute the analysis. Our analysis revealed 40 QTLs associated with egg quality under tropical conditions, namely 20 QTLs with genome-wide statistical significance and 20 QTLs with chromosome-wide statistical significance. Furthermore, we identified 93 SNPs exerting discernible effects on egg quality, with 10 of these effects exhibiting genome-wide significance and 83 exhibiting potential significance. The majority of the detected QTL regions and SNPs agreed with those identified as having an association with egg quality or production traits in previous studies, thus supporting the interrelationships determined between the studied characteristics. The findings of this study enhance the understanding regarding the genetic regulation governing chicken egg quality, thereby serving as a valuable reference for future functional investigations.


Assuntos
Galinhas , Mapeamento Cromossômico , Ovos , Estudo de Associação Genômica Ampla , Polimorfismo de Nucleotídeo Único , Locos de Características Quantitativas , Clima Tropical , Animais , Galinhas/genética , Galinhas/fisiologia , Estudo de Associação Genômica Ampla/veterinária , Mapeamento Cromossômico/veterinária , Taiwan , Feminino , Marcadores Genéticos , Genótipo
3.
Zhonghua Gan Zang Bing Za Zhi ; 31(10): 1081-1086, 2023 Oct 20.
Artigo em Chinês | MEDLINE | ID: mdl-38016774

RESUMO

Objective: To investigate the clinical phenotype and gene variation conditions in neonatal intrahepatic cholestasis caused by citrin deficiency (NICCD), so as to provide a basis for genetic counseling and clinical diagnosis and treatment of the family. Methods: 11 cases of neonatal intrahepatic cholestasis who visited the Children's Hospital Affiliated to Zhengzhou University between February 2019 and March 2021 were selected as the study subjects. High-throughput sequencing technology was used to detect the gene variation condition in 11 neonatal patients and 100 normal control neonates. The suspicious loci and family members were verified by Sanger sequencing and QPCR technology. Results: All 11 children with NICCD had different degrees of jaundice and liver damage symptoms, combined with coagulation dysfunction and anemia (n = 7), cardiac malformation (n = 2), elevated myocardial enzymes (n = 4), hyperlipidemia (n = 1), hyperkalemia (n = 1), persistent diarrhea (n = 3), developmental delay (n = 1). A total of 10 different types of SLC25A13 gene mutations were detected in 11 cases, including three frameshift mutations, two splicing changes, two missense mutations, one intron insertion, one nonsense mutation, and one heterozygous deletion. After reviewing literature and databases, c.1878delG(p.I627Sfs*73) and exon11 deletion were novel mutations that had not been reported at home or abroad. Conclusion: The clinical features of NICCD are non-specific, and genetic testing aids in the early and accurate diagnosis of the disease, providing an important basis for clinical treatment and genetic counseling for family members. In addition, the detection of novel mutation sites has enriched the SLC25A13 gene variation spectrum.


Assuntos
Colestase Intra-Hepática , Colestase , Citrulinemia , Transportadores de Ânions Orgânicos , Humanos , Recém-Nascido , Proteínas de Ligação ao Cálcio , Colestase Intra-Hepática/genética , Citrulinemia/complicações , Citrulinemia/diagnóstico , Citrulinemia/genética , Proteínas de Transporte da Membrana Mitocondrial/genética , Mutação , Transportadores de Ânions Orgânicos/genética
4.
Br Poult Sci ; 63(2): 164-170, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34287092

RESUMO

1. The objectives of this study were to use principal component analysis (PCA) to analyse the variability of the three instrumental and 14 descriptive sensory properties of chicken breast meat. The meat was cooked until the internal temperature reached 85°C and further cooked for 0, 20, and 40 min. The second objective was to identify the most critical variables for assessing meat juiciness.2. Cooking loss and moisture content exhibited high correlation with sensorial moisture release and mouth feel.3. The distribution of objects on the axes of the first two principal components (PCs) enabled the identification of three groups undergoing different cooking durations. The four major PCs explained 80.0% of the total variability.4. Cooking loss, moisture content, water-holding capacity, sensorial moisture release and mouth feel were demonstrated as the most effective variables for the first two PCs. PCA with instrumental and sensory analyses proved an effective procedure for systematically and comprehensively judging chicken meat juiciness.


Assuntos
Galinhas , Culinária , Animais , Culinária/métodos , Carne/análise , Análise de Componente Principal , Temperatura
5.
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi ; 56(12): 1270-1276, 2021 Dec 07.
Artigo em Chinês | MEDLINE | ID: mdl-34963214

RESUMO

Objective: To explore the efficacy of relocation and expansion pharyngoplasty by suspension sutures in the treatment of obstructive sleep apnea hypopnea syndrome (OSAHS). Methods: Seventy-three patients(including 60 males and 13 females) with OSAHS admitted to the department of otorhinolaryngology of our hospital in recent two years were retrospectively analyzed. All the patients had velopharyngeal obstructionevaluated by electronic endoscopic Müller test and were divided into control group (34 cases) and observation group (39 cases). The patients in the control group were performed modified uvulopalatopharyngoplasty, while those in the observation group were performed relocation and expansion pharyngoplasty by suspension sutures.The scores of ESS, AHI and LSaO2 before and after treatment were collected and compared. Results: The total effective rate of the observation group was 94.87%, which was significantly higher than 79.41% of the control group. The AHI was lower and LSaO2 value was higher (χ2=-1. 896,-1. 968,P<0.05)in the observation group. The sleeping symptoms and quality of life of the two groups were significantly improved. The ESS score of the observation group was decreased more significantly than that of the control group after treatment, and the difference was statistically significant (χ2=-1.451,P<0.05). The incidence of foreign body sensation in pharynx of the observation group (89.74%) was higher than that of the control group (55.88%), and the postoperative bleeding and postoperative recurrence rate (0.00%, 2.56%) was lower than that of the control group (8.82%, 14.70%)with statistical significance (χ2=4.738,4.249,4.119,P<0.05).The incidence of transient nasopharyngeal reflux in both groups was low and statistically insignificant (χ2=0.629,P>0.05). Conclusions: Preoperative strict screening of indications plays an important role in the selection of palatopharyngeal surgery methods and curative effect. Relocation and expansion pharyngoplasty by suspension sutures can improve the clinical efficacy of OSAHS with better safety and less recurrence.


Assuntos
Faringe , Apneia Obstrutiva do Sono , Feminino , Humanos , Masculino , Palato Mole/cirurgia , Faringe/cirurgia , Qualidade de Vida , Estudos Retrospectivos , Apneia Obstrutiva do Sono/cirurgia , Suturas
7.
Artigo em Chinês | MEDLINE | ID: mdl-28780826

RESUMO

Objective: To investigate the influence of extremely low-frequency magnetic field on periodical expression of cryptochrome (Cry) gene in mouse embryonic fibroblast NIH3T3 cells. Methods: The NIH3T3 cells were divided into magnetic field group and sham-exposure group. The NIH3T3 cells in the magnetic field group were stimulated by horse serum and then exposed to an extremely low-frequency magnetic field (50 Hz and 0.3 mT) for 48 hours, and those in the sham-exposure group were also stimulated by horse serum and then exposed to a coil for 48 hours. The NIH3T3 cells were collected, total RNA was extracted, and cDNA was obtained via reverse transcription. Real-time fluorescent quantitative RT-PCR was used to measure the changes in transcription cycles of Cry and Period genes in both groups. Results: There was no significant difference in the proliferation rate at 0, 12, 24, and 48 hours of exposure between the two groups (P>0.05) . Both sham-exposure group and magnetic field group showed a rhythmic change in the expression of Cry gene, and compared with the sham-exposure group, the magnetic field group had a significantly shortened circadian rhythm of Cry gene in NIH3T3 cells (t=2.57, P<0.05) . Both groups had rhythmic and periodical expression of Period gene and there was no significant difference between the two groups (t=0.70, P>0.05) . Conclusion: Extremely low-frequency magnetic field can significantly shorten the circadian rhythm of Cry gene in mouse embryonic fibroblasts, while there is no significant change in the circadian rhythm of Period gene.


Assuntos
Ritmo Circadiano/efeitos da radiação , Criptocromos/efeitos da radiação , Campos Magnéticos , Células NIH 3T3/efeitos da radiação , Animais , Camundongos
8.
Mar Pollut Bull ; 124(2): 714-724, 2017 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-28267993

RESUMO

Inflow of wastewater from upstream causes a large flux of pollutants to enter Kaohsiung Harbor in Taiwan daily. To reveal the ecological risk posed by Kaohsiung Harbor sediments, an ecological metabolomic approach was employed to investigate environmental factors pertinent to the physiological regulation of the marine amphipod Hyalella azteca. The amphipods were exposed to sediments collected from different stream inlets of the Love River (LR), Canon River (CR), Jen-Gen River (JR), and Salt River (SR). Harbor entrance 1 (E1) was selected as a reference site. After 10-day exposure, metabolomic analysis of the Hyalella azteca revealed differences between two groups: {E1, LR, CR} and {JR, SR}. The metabolic pathways identified in the two groups of amphipods were significantly different. The results demonstrated that NMR-based metabolomics can be effectively used to characterize metabolic response related to sediment from polluted areas.


Assuntos
Anfípodes/metabolismo , Monitoramento Ambiental/métodos , Espectroscopia de Ressonância Magnética/métodos , Metabolômica/métodos , Poluentes Químicos da Água/toxicidade , Animais , Sedimentos Geológicos/análise , Metabolômica/instrumentação , Poluentes Químicos da Água/metabolismo
9.
Transbound Emerg Dis ; 64(6): e48-e51, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28117561

RESUMO

Plague is a zoonotic disease caused by the bacterium Yersinia pestis. This pathogen can be transmitted by fleas and has an enzootic cycle, circulating among small mammals, and occasionally epizootic cycles, infecting other species. In China, infected wild rodents are primarily reservoirs of Y. Pestis and are related to human infection (Int. J. Infect. Dis., 33, 2015 and 67; BMC Microbiol., 9, 2009 and 205). Because shepherd dogs prey on and eat rodents (e.g. marmots and mice), they are valuable sentinel animals for plague serosurveillance in endemic disease foci, although their infections are usually asymptomatic (Vet. Microbiol., 172, 2014 and 339).


Assuntos
Doenças do Cão/epidemiologia , Monitoramento Epidemiológico/veterinária , Peste/veterinária , Doenças dos Roedores/epidemiologia , Sciuridae , Vigilância de Evento Sentinela/veterinária , Yersinia pestis/isolamento & purificação , Animais , China/epidemiologia , Doenças do Cão/microbiologia , Cães , Marmota , Peste/epidemiologia , Peste/microbiologia , Doenças dos Roedores/microbiologia , Yersinia pestis/classificação , Yersinia pestis/genética
10.
Int J Colorectal Dis ; 32(2): 183-192, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27771773

RESUMO

PURPOSE: Colorectal cancer (CRC) is one of the most common and preventable forms of cancer but remains the second leading cause of cancer-related death. Colorectal adenomas are precursor lesions that develop in 70-90 % of CRC cases. Identification of peripheral biomarkers for adenomas would help to enhance screening efforts. This exploratory study examined the methylation status of 20 candidate markers in peripheral blood leukocytes and their association with adenoma formation. METHODS: Patients recruited from a local endoscopy clinic provided informed consent and completed an interview to ascertain demographic, lifestyle, and adenoma risk factors. Cases were individuals with a histopathologically confirmed adenoma, and controls included patients with a normal colonoscopy or those with histopathological findings not requiring heightened surveillance (normal biopsy, hyperplastic polyp). Methylation-specific polymerase chain reaction was used to characterize candidate gene promoter methylation. Odds ratios (ORs) and 95 % confidence intervals (95% CIs) were calculated using unconditional multivariable logistic regression to test the hypothesis that candidate gene methylation differed between cases and controls, after adjustment for confounders. RESULTS: Complete data were available for 107 participants; 36 % had adenomas (men 40 %, women 31 %). Hypomethylation of the MINT1 locus (OR 5.3, 95% CI 1.0-28.2) and the PER1 (OR 2.9, 95% CI 1.1-7.7) and PER3 (OR 11.6, 95% CI 1.6-78.5) clock gene promoters was more common among adenoma cases. While specificity was moderate to high for the three markers (71-97 %), sensitivity was relatively low (18-45 %). CONCLUSION: Follow-up of these epigenetic markers is suggested to further evaluate their utility for adenoma screening or surveillance.


Assuntos
Pólipos Adenomatosos/genética , Metilação de DNA/genética , Estudos de Associação Genética , Idoso , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Regiões Promotoras Genéticas/genética
11.
Artigo em Chinês | MEDLINE | ID: mdl-29771046

RESUMO

Objective:The aim of this study is to investigate the clinical value of visual analogue scale combined with serum C-reactive protein in evaluating the prognosis of peritonsillar abscess. Method:Thirty-one patients be hospitalized with peritonsillar abscess were enrolled in this study, who were treated by puncture and antibiotic from January 2016 to February 2017. VAS and CRP level were detected on the 1, 3, 5 day of hospitalization for all the patients. Result:Twenty-five patients were cured after 5 days. The 1, 3, 5 day's VAS of forty-seven patients were 8.20±1.25, 4.42±1.05, 1.41±0.55, respectively, and the CRP level were (62.41±8.61), (20.46±5.32), (5.41±1.95)mg/L, respectively (P<0.05) in the three days. The 1, 3 day's VAS of six patients were 8.41±1.44, 7.37±1.15, respectively, and the CRP level were (59.85±8.35), (45.33±7.46)mg/L, with no significant difference (P>0.05) in the two days. But the fifth day' VAS was 1.55±0.65, and the CRP level was 10.24±2.57 mg/L, with statistically significant difference (P<0.05)) compared with the first day. Conclusion:Subjective evaluation used by VAS and objective evaluation used by CRP level to assess the prognosis of peritonsillar. Therefore, VAS score combined with C-reactive protein detection is more accurate for the prognosis of tonsil abscess evaluation..


Assuntos
Proteína C-Reativa/análise , Abscesso Peritonsilar/sangue , Escala Visual Analógica , Humanos , Medição da Dor , Abscesso Peritonsilar/patologia , Prognóstico
12.
Br Poult Sci ; 57(6): 740-750, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27744716

RESUMO

This study aimed to evaluate the changes in physicochemical, textural and sensory characteristics of broiler (BR) and Taiwan native chicken (TNC) pectoralis muscle heated at temperatures of 50-95°C. With increasing temperature, cooking loss, collagen solubility, shear force value and hardness, of samples increased in both chicken breeds. Rapid decreases in protein solubility were observed when the meat was heated to 50°C and gradually decreased thereafter. Meat from BRs and native chickens performed differently upon heating in certain characteristics. TNC meat had longer cooking time and lower myofibrillar fragmentation index than BR meat did. TNC meat had higher collagen content, shear force values and springiness but lower collagen solubility than BR meat did. BR meat had significantly higher onset and end transition temperatures than TNC meat did. In BR meat, a sensory analysis revealed that moisture release decreased and chicken flavour increased with increasing temperature. Protein solubility, cooking loss and the texture of heated meat were highly correlated. This study scientifically assessed the performances of the two breeds of chickens with different thermal treatments; producers could utilise the information to produce poultry products with more desirable qualities.


Assuntos
Galinhas/fisiologia , Carne/análise , Músculos Peitorais/fisiologia , Animais , Galinhas/genética , Culinária , Paladar
13.
Artigo em Chinês | MEDLINE | ID: mdl-27666700

RESUMO

Objective: To investigate the prognostic factors relevant to acute low-tone sensorineural hearing loss (ALHL). Methods: 196 adult ALHL patients, including 82 males and 114 females with mean age of (43.1±14.3)years old were included. All patients received the same therapy and were evaluated the curative effect. To evaluate the impact factors on the prognosis of hearing, inclusive of age, gender, time delay before the first visit, degree of deafness, vestibular function, electrocochleogram, and the serum levels of thyroxines by SPSS 18.0 software. Results: Of those 196 patients with ALHL, 124(63.3%) were recovery, 5(2.6%) were excellent better, 42(21.4%) were better, and 25 (12.8%) were poor, with a total effective rate of 87.2%. Among 15 (12.1%) who recurred the hearing loss, 2 developed into Meniere's disease during the follow-up. The mean age of patients with poor hearing effect was significantly older than that of other patients (P<0.05). No relativity was found between gender and hearing curative effect. There existed a statistical difference in total effective rate among subjects with different histories (P<0.05). In addition, the recovery rate was significantly different between groups, i. e., the course of disease was less than 14 days, between 14 days and 6 months, and between 6 months and 2 years (P<0.05). There was no statistical significance in total effective rate among different degrees of deafness (P>0.05). However, in term of the recovery rate, the difference was statistical significance (P<0.05). The recovery rate in patients with mild hearing loss was higher than that in middle or heavy hearing loss (both P<0.05). Among patients with mild deafness, the recovery rate in patients whose history was less than 3 months was significantly higher than that more than 3 months (P<0.05). For moderate deafness patients, the recovery rate in patients whose history was less than 7 days was significantly higher than that more than 1 month (P<0.05). There were statistical differences in hearing effect of 130 (66.3%) patients with abnormal vestibular function in comparison to that with normal vestibular function (χ2=15.1, P<0.05). There were 17(8.7%) patients with abnormal electrocochleogram combined with abnormal vestibular function, and the hearing effects were all poor. There were 45 (23.0%) patients with abnormal thyroxine levels in serum, which was significant higher than that in health adults of 5.9%(χ2=7.26, P<0.01). There was no significant difference in hearing prognosis between patients with abnormal and normal thyroxine levels (χ2=2.51, P>0.05). Conclusions: With respect to ALHL, the hearing effect is associated significantly with the history. The severity of hearing loss is negative prognostic factor for hearing recovery. Age, vestibular function, and electrocochleogram might predict hearing recovery. Gender and thyroxine levels couldn't predict the hearing prognosis, although there is a high incidence rate in patients with ALHL.


Assuntos
Perda Auditiva Neurossensorial/terapia , Adulto , Fatores Etários , Audiometria de Resposta Evocada , Feminino , Audição , Perda Auditiva Neurossensorial/sangue , Perda Auditiva Neurossensorial/fisiopatologia , Testes Auditivos , Humanos , Masculino , Doença de Meniere/etiologia , Pessoa de Meia-Idade , Prognóstico , Recuperação de Função Fisiológica , Recidiva , Fatores Sexuais , Tiroxina/sangue , Tempo para o Tratamento , Resultado do Tratamento , Vestíbulo do Labirinto/fisiopatologia
14.
Genet Mol Res ; 15(2)2016 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-27323064

RESUMO

The aim of the current study was to evaluate the levels of growth factors in the cerebrospinal fluid (CSF) of patients with autism, after transplantation of human umbilical cord blood mononuclear cells (CBMNCs) and umbilical cord-derived mesenchymal stem cells (UCMSCs). Twenty patients received two CBMNC intravenous and intrathecal infusions, each followed by two UCMSC intrathecal injections. A 2-mL sample of CSF was taken before each intrathecal injection. CSF levels of hepatocyte growth factor (HGF), brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF) and basic fibroblast growth factor (bFGF) were determined by an enzyme-linked immunosorbent assay (ELISA). All data are reported as means ± SD and were analyzed using the SPSS 10.0 software. One-way analysis of variance with post-hoc F- and Q-tests was performed for comparison. HGF, BDNF and NGF levels in the CSF were significantly increased after transplantation (P < 0.05), while bFGF levels did not change significantly. Therefore, transplantation of CBMNCs and UCMSCs could increase HGF, BDNF and NGF levels in the CSF of patients with autism.

15.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi ; 30(13): 1038-1041, 2016 Jul 05.
Artigo em Chinês | MEDLINE | ID: mdl-29798033

RESUMO

Objective:To investigate the ultrahigh-frequency(UHF) hearing thresholds in middle-aged and elderly healthy subjects .Method: Healthy subjects(age range: 50-69 ) were divided into two groups,i.e.50-59 year-old group and >59-69 year-old group.Each subject was tested with both conventional-frequency(0.25,0.50,1.00,2.00,4.00,6.00 and 8.00 kHz) and ultrahigh-frequency(9.0,10.0,11.5,12.5,14.0,16.0,18.0,and 20.0 kHz) audiometry.UHF was performed twice to evaluate the reliability.The best hearings among 20-29 aged healthy adults were considered as normal controls.Results:Seventy five middle-aged and elderly subjects were included,with 39 subjects(78 ears) being 50-59 years old and 36(72 ears) being >59-69 year-old.Eighteen subjects(36 ears) aging from 20 to 29 were considers as controls.For the conventional-frequency,the hearing thresholds in middle-aged and elderly people were significantly higher than those in young people(all P<0.05),especially at ≥4 kHz.Although the conventional-frequency thresholds in >59-69 year-old group were higher than those in 50-59 year-old,the difference was significant just at 4 kHz(P<0.05).The UHF thresholds in middle-aged and elderly people were significantly higher than those in young people(all P<0.05).The thresholds at 9,10,11.5 and 12.5 kHz in >59-69 year-old people were significantly increased than those in 50-59 year-old counterparts(all P<0.05).Hearing threshold at ≥12.5 kHz couldn't be detected in some subjects in middle-aged and elderly group.The response rate at UHF in >59-69 year-old people were just higher than that in 50-59 year-old counterparts (P>0.05),and none responded at 18 and 20 kHz.The standard deviations(SDs) for <14 kHz in 50-59 year-old and for <11.5 kHz in >59-69 year-old subjects,were both higher than that in 20-29 year old counterparts.Above 6 kHz,the SDs in 50-59 year-old subjects were significantly higher than those in >59-69 year-old subjects(all P<0.05).Conclusion:For middle-aged and elderly people,the hearing loss may occur from 4 kHz.Hearing thresholds at UHF were increased with age,and it might be used as an early indicator for age-induced hearing loss.However,the UHF sensitivity decreased as the frequency increased beyond 14 kHz.


Assuntos
Audiometria de Tons Puros , Limiar Auditivo , Perda Auditiva Provocada por Ruído , Idoso , Audiometria , Audição , Humanos , Pessoa de Meia-Idade , Reprodutibilidade dos Testes
16.
Genet Mol Res ; 14(4): 16297-307, 2015 Dec 08.
Artigo em Inglês | MEDLINE | ID: mdl-26662423

RESUMO

The aim of this study was to establish a metastatic human neuroblastoma (NB) mouse model by xenograft in order to study the metastatic mechanisms of NB. A human NB cell line was obtained from a 5-year-old patient and cultured in vitro. A suspension of these cells was subcutaneously inoculated into nude mice at the right flank next to the forelimb. The biological characteristics of the developed subcutaneous and metastatic tumors were analyzed by hematoxylin and eosin staining. The expression of the tumor marker neuron-specific enolase was determined by immunohistochemistry, and the invasive ability of metastatic tumors was examined by a Matrigel invasion assay. DNA microarray analyses were performed to examine the metastasis-related gene expression. Our results showed that tumors grew in 75% of the mice injected with NB cells and the rate of metastasis was 21%. The xenograft tumors retained the morphological and biological characteristics of the NB specimen from the pediatric patient. Neuron-specific enolase was highly expressed in both subcutaneous and metastatic tumors. The metastatic tumor cells possessed a higher invasive capability than the primary NB cells. The expression of 25 metastasis-related genes was found to be significantly altered in metastatic tumors compared to primary tumors, including RECK, MMP2, VEGF, MMP3, and CXCL12. In conclusion, we successfully established a human NB xenograft model with high tumor-bearing and metastatic rates in nude mice, providing an ideal animal model for the in vivo study of NB.


Assuntos
Neuroblastoma/patologia , Animais , Biomarcadores Tumorais , Biópsia , Linhagem Celular Tumoral , Pré-Escolar , Modelos Animais de Doenças , Feminino , Expressão Gênica , Xenoenxertos , Humanos , Imuno-Histoquímica , Masculino , Camundongos , Camundongos Nus , Metástase Neoplásica , Neuroblastoma/genética , Neuroblastoma/metabolismo , Fosfopiruvato Hidratase/genética , Fosfopiruvato Hidratase/metabolismo
17.
Eur Rev Med Pharmacol Sci ; 19(21): 4020-7, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26592823

RESUMO

OBJECTIVE: The aim of this study was to investigate the role of miR-16 in Alzheimer's disease (AD) and to explore its mechanism of action. MATERIALS AND METHODS: A cellular AD model using PC12 cells and primary hippocampal neurons was established to evaluate the expression level of miR-16. Transfection of a miR-16 mimic and a miR-16 inhibitor were performed to explore its effect on cell apoptosis and cell viability. In addition, we carried out bioinformatics analysis, luciferase reporting gene assay, and gene expression analyses to identify the potential target of miR-16 and to verify the effect of the target gene on the cellular AD model. RESULTS: Downregulation of miR-16 was confirmed in the cellular AD model with both PC12 cells (p < 0.05) and primary hippocampal neurons (p < 0.05). Overexpression and inhibition of miR-16 in the cellular AD model with primary hippocampal neurons decreased and increased apoptosis, respectively. The gene encoding amyloid precursor protein (APP) was identified as the target gene of miR-16. Knockdown of APP in primary hippocampal neurons decreased cell apoptosis and increased cell viability in the cellular AD model. CONCLUSIONS: Our results demonstrate that downregulation of miR-16 in primary hippocampal neurons play an important role in the paracrine effect and might be involved in the development of AD.


Assuntos
Doença de Alzheimer/patologia , Precursor de Proteína beta-Amiloide/genética , Apoptose/genética , MicroRNAs/fisiologia , Doença de Alzheimer/genética , Precursor de Proteína beta-Amiloide/antagonistas & inibidores , Animais , Apoptose/efeitos dos fármacos , Morte Celular/efeitos dos fármacos , Morte Celular/genética , Regulação para Baixo/efeitos dos fármacos , Regulação para Baixo/genética , Embrião de Mamíferos , Hipocampo/efeitos dos fármacos , Hipocampo/metabolismo , MicroRNAs/genética , Modelos Teóricos , Neurônios/efeitos dos fármacos , Neurônios/metabolismo , Células PC12 , RNA Interferente Pequeno/genética , Ratos , Ratos Sprague-Dawley
18.
Genet Mol Res ; 14(4): 13195-202, 2015 Oct 27.
Artigo em Inglês | MEDLINE | ID: mdl-26535632

RESUMO

Neuroblastoma is the most common and one of the deadliest among pediatric tumors; however, a subset of infants with neuroblastoma display spontaneous regression. The mechanism of spontaneous regression remains to be elucidated. TrkA plays an essential role in the differentiation and functionality of neurons; abundant TrkA expression is associated with favorable prognosis of neuroblastoma. All-trans retinoic acid (ATRA), a first-line drug for acute promyelocytic leukemia (APL) treatment, has been shown to induce differentiation and inhibit cell growth. Neuroblastoma tissues in our hospital inpatient were collected, primary cell culture was performed, and the cells were separated and purified to be cell line. Trypan blue exclusion was used to count the numbers of cells alive, morphological changes were observed under the phase-contrast microscope. RT-PCR was used to determine the expression level of TrkA. In this study, a human neuroblastoma cell line was successfully established; in addition, we demonstrated that ATRA induces growth arrest and promotes the differentiation of neuroblastoma cells. In addition, ATRA was shown to significantly increase the levels of TrkA mRNA expression. Therefore, we concluded that the elevated expression of the TrkA receptor is associated with ATRA-induced growth arrest and differentiation o neuroblastoma cells. The results of this study provide a theoretical basis for the clinical application of differentiation-inducing ATRA for neuroblastoma therapy.


Assuntos
Diferenciação Celular/efeitos dos fármacos , Diferenciação Celular/genética , Expressão Gênica , Neuroblastoma/genética , Neuroblastoma/patologia , Receptor trkA/genética , Tretinoína/farmacologia , Pontos de Checagem do Ciclo Celular/efeitos dos fármacos , Pontos de Checagem do Ciclo Celular/genética , Linhagem Celular Tumoral , Humanos , RNA Mensageiro/genética
19.
Acta Virol ; 59(3): 257-64, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26435149

RESUMO

Orf is a severe infectious disease of sheep and goats caused by orf virus (ORFV). To investigate the role of ORF119 gene of ORFV, we constructed ORFV with deleted ORF119 gene and LacZ as reporter gene (ORFV-Δ119-LacZ) via homologous recombination. The results showed that wild-type ORF-SHZ1 and ORFV-Δ119-LacZ deletion viruses replicated in Vero cells to similar titers. Relative transcriptional levels of virulence genes OVIFNR, GIF, VEGF and VIL-10 of ORFV-Δ119-LacZ deletion virus were slightly but not significantly lower after 24 hr compared with the wtORF-SHZ1 virus. In vivo experiments showed that 2-month-old lambs inoculated with ORFV-Δ119-LacZ deletion virus exhibited a similar total clinical score compared with those inoculated with wtORF-SHZ1 virus. Based on these results, we conclude that deletion of the ORF119 gene has no significant effect on ORFV replication and virulence.


Assuntos
Genes Virais/fisiologia , Vírus do Orf/fisiologia , Replicação Viral , Sequência de Bases , Dados de Sequência Molecular , Vírus do Orf/genética , Vírus do Orf/patogenicidade , Virulência
20.
Genet Mol Res ; 14(3): 8725-32, 2015 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-26345804

RESUMO

We aimed to evaluate the levels of growth factors in the cerebrospinal fluid (CSF) of patients with autism after transplantation of umbilical cord blood mononuclear cells (CBMNCs). Fourteen subjects diagnosed with autism received transplantation of CBMNCs first through intravenous infusion, and three times subsequently through intrathecal injections. A 2-mL sample of CSF was taken before each intrathecal injection. CSF levels of nerve growth factor (NGF), vascular endothelial growth factor (VEGF), and basic fibroblast growth factor (bFGF) were determined by enzyme-linked immunosorbent assay. All data are reported as means ± SD and were analyzed using the SPSS 10.0 software. One-way analysis of variance with post-hoc F-and Q-tests were performed for comparisons. NGF levels in the CSF were significantly increased after transplantation (213.54 ± 56.38 after the third versus 28.32 ± 12.22 ng/L after the first transplantation; P < 0.05), while VEGF and bFGF levels did not change significantly. Therefore, transplantation of CBMNCs could increase NGF levels in the CSF of patients with autism.


Assuntos
Transtorno Autístico/líquido cefalorraquidiano , Sangue Fetal/citologia , Leucócitos Mononucleares/transplante , Fator de Crescimento Neural/líquido cefalorraquidiano , Transtorno Autístico/terapia , Criança , Pré-Escolar , Feminino , Fator 2 de Crescimento de Fibroblastos/líquido cefalorraquidiano , Humanos , Masculino , Resultado do Tratamento , Fator A de Crescimento do Endotélio Vascular/líquido cefalorraquidiano
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