RESUMEN
BACKGROUND: Autism spectrum disorder (ASD) is a group of neurodevelopmental disorders characterized by deficits in social communication and restrictive behaviors. Mouse nerve growth factor (mNGF), a neurotrophic factor, is critical for neuronal growth and survival, and the mNGF treatment is considered a promising therapy for neurodegeneration. In light of this, we aimed to evaluate the effect of mNGF on neurological function in ASD. METHODS: An ASD rat model was established by intraperitoneal injection of valproic acid (VPA). Social behavior, learning, and memory of the rats were measured. TdT-mediated dUTP Nick-end labeling and Nissl assays were performed to detect neuronal apoptosis and survival in the hippocampus and prefrontal cortex. Apoptosis-related proteins and oxidative stress markers were detected. RESULTS: mNGF improved locomotor activity, exploratory behavior, social interaction, and spatial learning and memory in VPA-induced ASD rats. In the hippocampus and prefrontal cortex, mNGF suppressed neuronal apoptosis, increased the number of neurons, superoxide dismutase, and glutathione levels, and decreased reactive oxygen species, nitric oxide, TNF-α, and IL-1ß levels compared with the VPA group. In addition, mNGF increased the levels of Bcl-2, p-phosphoinositide-3-kinase (PI3K), and p-serine/threonine kinase (Akt), and decreased the levels of Bax and cleaved caspase-3, while the PI3K inhibitor LY294002 reversed these effects. CONCLUSION: These data suggest that mNGF suppressed neuronal apoptosis and ameliorated the abnormal behaviors in VPA-induced ASD rats, in part, by activating the PI3K/Akt signaling pathway.
Asunto(s)
Trastorno del Espectro Autista , Ácido Valproico , Ratas , Animales , Ratones , Humanos , Ácido Valproico/efectos adversos , Trastorno del Espectro Autista/inducido químicamente , Trastorno del Espectro Autista/tratamiento farmacológico , Proteínas Serina-Treonina Quinasas/efectos adversos , Proteínas Serina-Treonina Quinasas/metabolismo , Fosfatidilinositol 3-Quinasa/metabolismo , Fosfatidilinositol 3-Quinasa/farmacología , Proteínas Proto-Oncogénicas c-akt/metabolismo , Proteínas Proto-Oncogénicas c-akt/farmacología , Fosfatidilinositol 3-Quinasas/genética , Fosfatidilinositol 3-Quinasas/metabolismo , Fosfatidilinositol 3-Quinasas/farmacología , Transducción de Señal , Apoptosis , Fosfatidilinositoles/efectos adversos , Serina/efectos adversos , Modelos Animales de EnfermedadRESUMEN
OBJECTIVE: To investigate the impact of prenatal and early childhood antimicrobial use on autism spectrum disorders (ASD). DATA SOURCES: We searched PubMed and Embase databases for relevant studies from inception to August 2022. STUDY SELECTION AND DATA EXTRACTION: Peer-reviewed, observational studies were all acceptable. Raw data were extracted into a predefined worksheet and quality analysis was performed using the Newcastle-Ottawa Scale. DATA SYNTHESIS: Nineteen studies were identified in the meta-analysis. Prenatal antimicrobial exposure was not associated with ASD (P = 0.06 > 0.05), whereas early childhood antimicrobial exposure was associated with an increased odds ratio of ASD (OR = 1.17, 95% CI = [1.08-1.27], P value < 0.001). The sibling-matched analysis, with a very limited sample size, suggested that neither prenatal (P = 0.47 > 0.05) nor early childhood (P = 0.13 > 0.05) antimicrobial exposure was associated with ASD. Medical professionals may need to take the possible association into consideration when prescribing an antimicrobial in children. CONCLUSIONS: Early childhood antimicrobial exposure could increase the incidence of ASD. In future studies, it would be necessary to control for confounding factors, such as genetic factors, parenteral age at birth, or low birthweight, to further validate the association.
Asunto(s)
Antiinfecciosos , Trastorno del Espectro Autista , Efectos Tardíos de la Exposición Prenatal , Niño , Embarazo , Femenino , Recién Nacido , Humanos , Preescolar , Trastorno del Espectro Autista/epidemiología , Efectos Tardíos de la Exposición Prenatal/inducido químicamente , Efectos Tardíos de la Exposición Prenatal/epidemiología , Antiinfecciosos/efectos adversos , Oportunidad Relativa , VitaminasRESUMEN
Troxerutin is known for its anti-inflammatory and antioxidative effects in nerve impairment. The purpose of this study is to investigate the effect of troxerutin and cerebroprotein hydrolysate injections (TCHis) on prenatal valproic acid (VPA)-exposed rats. The VPA was administered to pregnant rats on gestational day 12.5 to induce a model of autism. The offspring were given the treatment of TCHis on postnatal day (PND) 21-50. On PND 43-50, the behavioral analysis of offspring was performed after the treatment of TCHis for 1 h. On PND 50, the offspring were harvested and the brains were collected. The hippocampus and prefrontal cortex were isolated for relevant biochemical detections. The administration of TCHis increased pain sensitivity and improved abnormal social behaviors in prenatal VPA-exposed rats. Prenatal exposure of VPA induced neuronal loss and apoptosis, enhanced reactive oxygen species (ROS) production, and promoted oxidative stress in hippocampus and prefrontal cortex, whereas these effects were reversed by the postnatal treatment of TCHis. In addition, postnatal administration of TCHis ameliorated mitochondrial function in hippocampus and prefrontal cortex of prenatal VPA-exposed rats. This study concluded that postnatal treatment of TCHis reduced oxidative stress and ameliorated abnormal behavior in a prenatal VPA-induced rat model of autism.
Asunto(s)
Trastorno Autístico , Efectos Tardíos de la Exposición Prenatal , Animales , Trastorno Autístico/inducido químicamente , Trastorno Autístico/tratamiento farmacológico , Conducta Animal , Modelos Animales de Enfermedad , Femenino , Humanos , Hidroxietilrutósido/análogos & derivados , Estrés Oxidativo , Embarazo , Efectos Tardíos de la Exposición Prenatal/inducido químicamente , Ratas , Ratas Wistar , Conducta Social , Ácido Valproico/farmacologíaRESUMEN
Context: Morphine is an alkaloid isolated from the poppy plants. The addiction of morphine is a very serious social issue. Some long non-coding RNAs (lncRNAs) have been proposed to engage in drug addiction. Objective: Whether lncRNA maternally expressed gene 3 (MEG3) attended to morphine-mediated autophagy of mouse hippocampal neuronal HT22 cells was probed. Materials and methods: HT22 cells were subjected to 10 µM morphine for 24 h. Cell autophagy was assessed by measuring LC3-II/LC3-I and Beclin-1 expression. qRT-PCR was carried out to measure MEG3 expression. SiRNA oligoribonucleotides targeting MEG3 (si-MEG3) was transfected to silence MEG3. The orexin1 receptor (OX1R), c-fos, p/t-ERK and p/t-PKC expressions were tested by western blotting. SCH772984 was used as an inhibitor of ERK pathway. Results: Morphine elevated OX1R (2.92 times), c-fos (2.06 times), p/t-ERK (2.04 times) and p/t-PKC (2.4 times), Beclin-1 (3.2 times) and LC3-II/LC3-I (3.96 times) expression in HT22 cells. Moreover, followed by morphine exposure, the MEG3 expression was also elevated in HT22 cells (3.03 times). The silence of MEG3 lowered the Beclin-1 (1.85 times), LC3-II/LC3-I (2.12 times), c-fos (1.39 times) and p/t-ERK (1.44 times) expressions in morphine-treated HT22 cells. Inhibitor of ERK pathway SCH772984 further promoted the influence of MEG3 silence on morphine-caused Beclin-1 (1.97 times) and LC3-II/LC3-I (1.92 times) expressions decreases. Conclusions: Up-regulation of MEG3 attended to the morphine-caused autophagy of HT22 cells might be through elevating c-fos expression and promoting ERK pathway activation. More experiments are also needed in the future to analyse the influence of other lncRNAs in drug addiction.
Asunto(s)
Autofagia/efectos de los fármacos , Hipocampo/efectos de los fármacos , Sistema de Señalización de MAP Quinasas/efectos de los fármacos , Morfina/farmacología , Neuronas/efectos de los fármacos , ARN Largo no Codificante/metabolismo , Animales , Técnicas de Cultivo de Célula , Línea Celular , Hipocampo/metabolismo , Hipocampo/patología , Ratones , Dependencia de Morfina/metabolismo , Dependencia de Morfina/patología , Neuronas/metabolismo , Neuronas/patología , ARN Largo no Codificante/genética , TransfecciónRESUMEN
OBJECTIVE: To investigate the composition of gut microbiota and its correlation with the severity of behavior symptoms in children with autism spectrum disorder (ASD). METHODS: A total of 30 children with ASD were enrolled as the ASD group, and 20 healthy children matched for age and sex were enrolled as the healthy control group. Related clinical data were analyzed. The V3-V4 hypervariable regions of the bacterial 16S rRNA gene in fecal samples were sequenced. The severity of behavior symptoms in children with ASD was assessed using the autism behavior checklist. The Spearman's correlation analysis was used to investigate the correlation between gut microbiota and the severity of behavior symptoms in children with ASD. RESULTS: There was a significant difference in the composition of gut microbiota between the two groups. Compared with the healthy control group, the ASD group had significant reductions in Shannon index and Shannoneven index (P<0.05), as well as a significant reduction in the percentage of Firmicutes and a significant increase in the percentage of Acidobacteria in feces (P<0.05). In the ASD group, the dominant bacteria were Megamonas, Megasphaera, and Barnesiella, while in the healthy control group, the dominant bacteria were Eubacterium_rectale_group, Ezakiella, and Streptococcus. In the children with ASD, the abundance of Megamonas was positively correlated with the scores of health/physical/behavior and language communication (P<0.05). CONCLUSIONS: The development of ASD and the severity of behavior symptoms are closely associated with the composition of gut microbiota.
Asunto(s)
Trastorno del Espectro Autista , Microbioma Gastrointestinal , Bacterias , Niño , Heces , Humanos , ARN Ribosómico 16SRESUMEN
Autism spectrum disorder (ASD) encompasses a range of neurodevelopmental conditions characterized by enduring impairments in social communication and interaction together with restricted repetitive behaviors, interests, and activities. No targeted pharmacological or physical interventions are currently available for ASD. However, emerging evidence has indicated a potential association between the development of ASD and dysregulation of the gut-brain axis. Repetitive transcranial magnetic stimulation (rTMS), a noninvasive diagnostic and therapeutic approach, has demonstrated positive outcomes in diverse psychiatric disorders; however, its efficacy in treating ASD and its accompanying gastrointestinal effects, particularly the effects on the gut-brain axis, remain unclear. Hence, this review aimed to thoroughly examine the existing research on the application of rTMS in the treatment of ASD. Additionally, the review explored the interplay between rTMS and the gut microbiota in children with ASD, focusing on the gut-brain axis. Furthermore, the review delved into the integration of rTMS and gut microbiota modulation as a targeted approach for ASD treatment based on recent literature. This review emphasizes the potential synergistic effects of rTMS and gut microbiota interventions, describes the underlying mechanisms, and proposes a potential therapeutic strategy for specific subsets of individuals with ASD.
Asunto(s)
Trastorno del Espectro Autista , Microbioma Gastrointestinal , Niño , Humanos , Microbioma Gastrointestinal/fisiología , Estimulación Magnética Transcraneal , Eje Cerebro-Intestino , Trastorno del Espectro Autista/terapia , ComunicaciónRESUMEN
Steel slag and waste clay bricks are two prevalent solid waste materials generated during industrial production. The complex chemical compositions of these materials present challenges to their utilization in conventional alumina silicate ceramics manufacturing. A new type of ceramic tile, which utilizes steel slag and waste clay brick as raw materials, has been successfully developed in order to effectively utilize these solid wastes. The optimal composition of the ceramic material was determined through orthogonal experimentation, during which the effects of the sample molding pressure, the soaking time, and the sintering temperature on the ceramic properties were studied. The results show that the optimal ceramic tile formula was 45% steel slag, 35% waste clay bricks, and 25% talc. The optimal process parameters for this composition included a molding pressure of 25 MPa, a sintering temperature of 1190 °C, and a soaking time of 60 min. The prepared ceramic tile samples had compositions in which solid waste accounted for more than 76% of the total material. Additionally, they possessed a modulus of rupture of more than 73.2 MPa and a corresponding water absorption rate of less than 0.05%.
RESUMEN
Autism spectrum disorders (ASD) are a class of neurodevelopmental conditions with a large societal impact. Despite existing evidence suggesting a link between ASD pathogenesis and gut-brain axis dysregulation, there is no systematic review of the treatment of probiotics on ASD and its associated gastrointestinal abnormalities based on the gut-brain axis. Therefore, we performed an analysis for ASD based on preclinical and clinical research to give a comprehensive synthesis of published evidence of a potential mechanism for ASD. On the one hand, this review aims to elucidate the link between gastrointestinal abnormalities and ASD. Accordingly, we discuss gut microbiota dysbiosis regarding gut-brain axis dysfunction. On the other hand, this review suggests that probiotic administration to regulate the gut-brain axis might improve gastrointestinal symptoms, restore ASD-related behavioral symptoms, restore gut microbiota composition, reduce inflammation, and restore intestinal barrier function in human and animal models. This review suggests that targeting the microbiota through agents such as probiotics may represent an approach for treating subsets of individuals with ASD.
RESUMEN
Autism spectrum disorder (ASD) is a neurodevelopmental disorder that cannot be cured. The ASD rat model was developed in this study to demonstrate the role and mechanism of ganglioside GM1 (GM1). Rats were given valproic acid (VPA) to create the ASD rat model. The rats' behaviors were assessed using the Y-maze test, open-field test, three-chamber social interaction test, and Morris water maze test. Relative levels of glutathione (GSH), malondialdehyde (MDA), catalase (CAT), reactive oxygen species (ROS), and superoxide dismutase (SOD) were quantitated using relative kits. Nissl, TUNEL, immunofluorescent, and immunohistochemistry staining techniques were used. GM1 treatment improved the ASD model rats' behavior disorders, including locomotor activity and exploratory behavior, social interaction, learning and memory capacity, and repetitive behavior. Following GM1 injection, striatal neurons grew and apoptosis decreased. GM1 reduced the excessively elevated α-Syn in ASD by encouraging autophagy. The behavior disorder of ASD model rats was exacerbated by autophagy inhibition, which also increased α-Syn levels. By increasing autophagy, GM1 reduced α-Syn levels and, ultimately, improved behavioral abnormalities in ASD model rats.
Asunto(s)
Trastorno del Espectro Autista , Efectos Tardíos de la Exposición Prenatal , Ratas , Animales , Femenino , Humanos , Trastorno del Espectro Autista/tratamiento farmacológico , Gangliósido G(M1)/farmacología , Gangliósido G(M1)/uso terapéutico , Conducta Social , Ácido Valproico/farmacología , Aprendizaje por Laberinto , Autofagia , Modelos Animales de EnfermedadRESUMEN
Autism is a common neurodevelopmental disorder that severely affects patients' quality of life. We aimed to investigate whether acupuncture at Zusanli (ST36) could alleviate the behavior disorder of autistic rats by inhibiting thioredoxin-interacting protein (TXNIP)-mediated activation of NLRP3. An autism model was induced by intraperitoneal injection of pregnant rats with valproic acid (VPA). The pups' behaviors were analyzed using hot plate, open field, Morris water maze, and 3-chamber social interaction tests. Nissl staining was used to visualize neurons in prefrontal cortex. Levels of TXNIP, NLRP3, interleukin (IL)-1ß, and caspase were determined by Western blot or quantitative real-time PCR. After ST36 acupuncture, pain sensitivity, autonomous activity, sociability index, sociability preference index, and learning and memory were improved in the autism model rats. Levels of TXNIP, NLRP3, IL-1ß, and caspase 1 were decreased after acupuncture. Interference with TXNIP alleviated the behavior disorders and inhibited NLRP3, caspase 1, and IL-1ß levels. In summary, ST36 acupuncture reduced TXNIP expression, inhibited the activation of the NLRP3 inflammasome, and alleviated the behavior disorder related to the prefrontal cortex of the autistic rats. These results point to a potential mechanism for acupuncture-induced improvement of autistic behavioral disorders.
Asunto(s)
Terapia por Acupuntura/métodos , Trastorno Autístico/metabolismo , Proteínas de Ciclo Celular/metabolismo , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Corteza Prefrontal/metabolismo , Puntos de Acupuntura , Animales , Conducta Animal/fisiología , Modelos Animales de Enfermedad , Ratas , Ratas Sprague-DawleyRESUMEN
OBJECTIVE: Emerging evidence suggests that acupuncture plays a neuroprotective role in autism. This study aimed to explore the effect of electroacupuncture at Zusanli (ST36) on autistic-like behaviors and the underlying mechanism. METHOD: Pregnant rats were administered with valproic acid (VPA) on gestational day 12.5 to induce an autism spectrum disorder (ASD) model. The pups were given electroacupuncture at ST36 daily from postnatal day (PND) 28-48. On PND28, the adenoviral vector containing small interfering RNA Nrf2 (Ad-siRNA-Nrf2) was injected into the prefrontal cortex of rats. The behavioral analysis was performed on PND 44-48. On PND48, the animals were euthanized and the brains were collected for further detection. Nissl staining was performed to detect neuronal viability. The biochemical markers of oxidative stress were subsequently measured. RESULT: Electroacupuncture at ST36 ameliorated the locomotor activity, social behavior, spatial learning and memory and repetitive behavior compared with ASD rats. It was notable that the electroacupuncture decreased oxidative stress markers in the tissues of prefrontal cortex, enhanced translocation of nuclear factor erythroid2-related factor2 (Nrf2) from cytoplasm to nucleus, and up-regulated the levels of NADP(H) quinone oxidoreductase (NQO1) and heme oxygenase (HO-1). However, these effects induced by electroacupuncture at ST36 were abolished after injection of Ad-siRNA-Nrf2. CONCLUSION: These data suggested that electroacupuncture at ST36 protected nerve function in ASD rats through Nrf2 activation and the antioxidant response.
Asunto(s)
Trastorno del Espectro Autista , Trastorno Autístico , Electroacupuntura , Factor 2 Relacionado con NF-E2 , Animales , Femenino , Embarazo , Ratas , Antioxidantes , Trastorno del Espectro Autista/terapia , Trastorno Autístico/terapia , Factor 2 Relacionado con NF-E2/genética , Ratas Sprague-Dawley , ARN Interferente PequeñoRESUMEN
OBJECTIVE: To systematically evaluate evidence for the use of interventions based on appied behavior analysis (ABA) to manage various symptoms of children with autism spectrum disorder (ASD). METHODS: Sensitivity analyses were conducted by removing any outlying studies and subgroup analyses were performed to compare the effectiveness of ABA and early start denver model (ESDM), picture exchange communication systems (PECS) and discrete trial training (DTT). RESULTS: 14 randomized control trials of 555 participants were included in this meta-analysis. The overall standardized mean difference was d=-0.36 (95% CI -1.31, 0.58; Z=0.75, p=0.45) for autism general symptoms, d=0.11 (95% CI -0.31, 0.54; Z=0.52, p=0.60) for socialization, d=0.30 (95% CI -0.02, 0.61; Z=1.84, p=0.07) for communication and d=-3.52 (95% CI -6.31, -0.72; Z=2.47, p=0.01) for expressive language, d=-0.04 (95% CI -0.44, 0.36; Z=0.20, p=0.84) for receptive language. Those results suggested outcomes of socialization, communication and expressive language may be promising targets for ABA-based interventions involving children with ASD. However, significant effects for the outcomes of autism general symptoms, receptive language, adaptive behavior, daily living skills, IQ, verbal IQ, nenverbal IQ, restricted and repetitive behavior, motor and cognition were not observed. CONCLUSION: The small number of studies included in the present study limited the ability to make inferences when comparing ABA, ESDM, PECS and DTT interventions for children with ASD.
RESUMEN
To study the clinical effectiveness and mechanism of GM1 acupoint injection therapy on mental retardation for children with cerebral palsy (CP). A total of 90 children with CP were divided into acupoint injection group (group A), subcutaneous injection group (group B), and control group (group C). Another 30 healthy children were set as a healthy control group (group D). The Mental Developmental Index (MDI), Psychomotor Developmental Index (PDI), and hemodynamic parameters in the cerebral arteries were measured before and after treatment. After three treatment courses, the MDI and PDI in groups A, B, and C were increased, and the increase in group A was most obvious (P < 0.05). Peak systolic velocity, mean velocity, and end-diastolic velocity were also elevated in group A, and after three treatment courses, resistance index decreased with a statistical significance (P < 0.05). However, there were no significant changes in groups B and C (P > 0.05). For all groups, neuron-specific enolase levels decreased and total superoxide dismutase increased after treatment. Acupoint injection therapy combined with conventional rehabilitation therapy demonstrated significant effects on cerebral hemodynamic conditions for children with CP.
Asunto(s)
Terapia por Acupuntura/métodos , Parálisis Cerebral/complicaciones , Gangliósido G(M1)/uso terapéutico , Discapacidad Intelectual/terapia , Puntos de Acupuntura , Arterias Cerebrales/fisiología , Preescolar , Femenino , Gangliósido G(M1)/administración & dosificación , Hemodinámica , Humanos , Lactante , Inyecciones Subcutáneas/métodos , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/etiología , Masculino , Fosfopiruvato Hidratasa/sangre , Superóxido Dismutasa/sangreRESUMEN
Through the roles of vitamin B1 and B12 in neuroprotection and in improving cerebral palsy symptoms have been previously noticed, the action mechanism is still unclear. This study aims to investigate the protective effect of vitamin B1 and B12 on neuron injury in cerebral palsy and to clarify the mechanism of vitamin B1 and B12 inhibiting neurons apoptosis, and to focus on the role of lncRNA MALAT1 in this process. In order to investigate the effect of vitamin B1 and B12 on neurons injury in vivo and on neuron apoptosis in vitro, we, respectively, introduced vitamin B1 and B12 into cerebral palsy rat and in apoptosis-induced N2A neurons by Oxygen Glucose Deprivation/reoxygenation (OGD/R). Our results demonstrated that vitamin B1 and B12 treatment improved the motor and memory functions and ameliorated the neurons injury in cerebral palsy rats. OGD/R treatment repressed the expression of MALAT1 and BDNF and the phosphorylation of PI3K and Akt, and enhanced the miR-1 expression, which were all reversed by vitamin B1 and B12 treatment in N2A neurons. Vitamin B1 and B12 inhibited miR-1 expression through MALAT1, promoted BDNF expression and activated PI3K/Akt signaling through the MALAT1/miR-1 axis. Vitamin B1 and B12 suppressed neuron apoptosis by up-regulating BDNF via MALAT1/miR-1 pathway. MALAT1 interference abolished the neuroprotective effect of vitamin B1 and B12 in cerebral palsy rats. Collectively, vitamin B1 and B12 up-regulates BDNF and its downstream PI3K/Akt signaling through MALAT1/miR-1 axis, thus suppressing neuron apoptosis and mitigating nerve injury in cerebral palsy rats.
Asunto(s)
Apoptosis/efectos de los fármacos , Factor Neurotrófico Derivado del Encéfalo/metabolismo , Parálisis Cerebral/patología , MicroARNs/genética , ARN Largo no Codificante/genética , Tiamina/farmacología , Vitamina B 12/farmacología , Animales , Línea Celular Tumoral , Modelos Animales de Enfermedad , Masculino , Memoria/efectos de los fármacos , Ratones , Actividad Motora/efectos de los fármacos , Neuronas/patología , Neuroprotección/efectos de los fármacos , Fármacos Neuroprotectores/farmacología , Fosfatidilinositol 3-Quinasa/metabolismo , Fosforilación/efectos de los fármacos , Proteínas Proto-Oncogénicas c-akt/metabolismo , Ratas , Ratas Sprague-DawleyRESUMEN
Autism spectrum disorder (ASD) is a neurodevelopmental disorder that is characterized by impairments in social interactions and communication, restricted interests and repetitive behaviors. Several studies report a high prevalence of gastrointestinal (GI) symptoms in autistic individuals. Cumulative evidence reveals that the gut microbiota and its metabolites (especially short-chain fatty acids, SCFAs) play an important role in GI disorders and the pathogenesis of ASD. However, the composition of the gut microbiota and its association with fecal SCFAs and GI symptoms of autistic children remain largely unknown. In the present study, we sequenced the bacterial 16S rRNA gene, detected fecal SCFAs, assessed GI symptoms and analyzed the relationship between the gut microbiome and fecal SCFAs in autistic and neurotypical individuals. The results showed that the compositions of the gut microbiota and SCFAs were altered in ASD individuals. We found lower levels of fecal acetic acid and butyrate and a higher level of fecal valeric acid in ASD subjects. We identified decreased abundances of key butyrate-producing taxa (Ruminococcaceae, Eubacterium, Lachnospiraceae and Erysipelotrichaceae) and an increased abundance of valeric acid associated bacteria (Acidobacteria) among autistic individuals. Constipation was the only GI disorder in ASD children in the present study. We also found enriched Fusobacterium, Barnesiella, Coprobacter and valeric acid-associated bacteria (Actinomycetaceae) and reduced butyrate-producing taxa in constipated autistic subjects. It is suggested that the gut microbiota contributes to fecal SCFAs and constipation in autism. Modulating the gut microbiota, especially butyrate-producing bacteria, could be a promising strategy in the search for alternatives for the treatment of autism spectrum disorder.
Asunto(s)
Trastorno del Espectro Autista/metabolismo , Ácidos Grasos Volátiles/metabolismo , Microbioma Gastrointestinal , Pueblo Asiatico , Trastorno del Espectro Autista/microbiología , Bacterias/genética , Bacterias/aislamiento & purificación , Bacterias/metabolismo , Niño , Heces/química , Humanos , Masculino , ARN Ribosómico 16S/genéticaRESUMEN
OBJECTIVE: To investigate the underlying mechanism of lncRNA myocardial infarction-associated transcript (MIAT) in hypoxic-ischemic (HI)-induced neonatal cerebral palsy. MATERIALS AND METHODS: Neonatal rat model of HI injury was established to detect the motor function. LncRNA MIAT, miR-211, glial cell line-derived neurotrophic factor (GDNF) and caspase-3 expressions were measured by qRT-PCR or western blot. The apoptosis of Neuro2A cells was detected by flow cytometry. RNA immunoprecipitation (RIP) and RNA pull-down assays were performed to confirm the interaction between MIAT and miR-211. RESULTS: Compared with control group, lncRNA MIAT and GDNF were downregulated in striatal tissues of neonatal rats in HI group and oxygen glucose deprivation (OGD)-induced ischemic injury of Neuro2A cells, whereas miR-211 was up-regulated in striatal tissues of HI group and OGD-induced ischemic injury of Neuro2A cells. LncRNA MIAT interacted with miR-211, and lncRNA MIAT overexpression reduced neuron apoptosis through miR-211. Besides, GDNF expression was positively regulated by lncRNA MIAT and negatively regulated by miR-211 in Neuro2A cells. In vivo experiment proved MIAT promoted motor function and relieved HI injury. CONCLUSION: MIAT overexpression reduced apoptosis of Neuro2A cells through miR-211/GDNF, which relieved HI injury of neonatal rats.
Asunto(s)
Apoptosis/genética , Parálisis Cerebral/metabolismo , Factor Neurotrófico Derivado de la Línea Celular Glial/metabolismo , Hipoxia/metabolismo , Isquemia/metabolismo , MicroARNs/metabolismo , Neuronas/metabolismo , ARN Largo no Codificante/metabolismo , Animales , Animales Recién Nacidos , Encéfalo/irrigación sanguínea , Hipoxia de la Célula , Línea Celular Tumoral , Cuerpo Estriado/patología , Modelos Animales de Enfermedad , Femenino , Factor Neurotrófico Derivado de la Línea Celular Glial/genética , Ratones , MicroARNs/genética , Actividad Motora/genética , Neuroblastoma/patología , ARN Largo no Codificante/genética , Ratas , Ratas WistarRESUMEN
OBJECTIVE: To study the effects of acupuncture combined with rat nerve growth factor (NGF) on the cerebral palsy infant rats and the proteins which associated with growth, apoptosis and metabolism. METHODS: Seventy infant rats were selected, Fifty infant rats of which were made the cerebral palsy infant model by the ligation of unilateral carotid artery for cerebral ischemia and oxygen-deficient environment, then the 30 model rats were randomly divided into a model group, a NGF group and a combined group, 10 rats in each group. Twenty infant rats were used in the sham-operated group and the blank control group, 10 rats in each group. The treatment was not given in the blank control group. The rats in the sham-operated group were cut the neck skin and separated the left carotid artery, and then sutured and disinfected the wound. The intraperitoneal injection of NGF (2000 Uâ¢kg-1â¢d-1) was used in the NGF group. Based on the injection in the NGF group, acupuncture was used in the combined group, once a day, and the acupoints were "Baihui" (GV 20), left "nieâ " (extra), "Dazhui" (GV 14), "Jizhong" (extra), "Quchi" (LI 11), "Yongquan" (KI 1), "Hegu" (LI 4), "Zhoujie" (extra) and "Xiqianxue" (extra). The same volume of saline was intraperitoneally injected in the model group for continuous 14 days. Neurobehavioral ability score was evaluated after treatment. TUNEL were conducted to detect the brain cell apoptosis rate and the expressions of apoptosis associated gene Bax, Bcl-2 and Casp3 were detected by PCR. The level of nerve growth associated protein (GAP-43) and energy metabolism-related protein monocarboxylate transporter protien 1(MCT 1) were detected by Western blot. RESULTS: After intervention, the neurobehavioral ability of baby rats in the blank control and sham-operated group was normal, but there was various degrees of abnormity in the model group, NGF group and combined group. The scores of neurobehavioral ability of the combined group and NGF group were better than those of the model control (all P<0.05), and the scores in the combined group was better than those in the NGF group (all P<0.05). The left brain cell apoptosis rate, expressions of Bax and Casp3 in the combined group and NGF group were lower and the expressions of Bcl-2 were higher than those of the model group (all P<0.05), with more obvious results of Bax and Gasp3 in the combined group than those in the NGF group (all P<0.05). The protein levels of GAP-43 and MCT 1 in the combined group and NGF group were higher than those in the model group (all P<0.05), with higher expressions in the combined group compared with those in the NGF group (both P<0.05). CONCLUSION: Acupuncture combined with NGF could improve the neurobehavioral ability of cerebral palsy infant rats, inhibit the nerve cell apoptosis and improve the brain tissue injure and energy metabolism by up-regulating the expressions of GAP-43 and MCT 1.