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https://www.readbyqxmd.com/read/29427656/gut-microbiota-inflammation-and-probiotics-on-neural-development-in-autism-spectrum-disorder
#1
REVIEW
Ceymi Doenyas
Recent evidence implicates immune alterations and gut microbiota dysbiosis in at least some subpopulations of individuals with autism spectrum disorder (ASD). Immune and gut alterations in ASD have mostly been studied separately, and the reviews and theoretical models up to now have mainly considered the immune system as one of the routes for gut-brain communication. We take a different perspective and consider possible common mechanisms of action for the gut microbiota and inflammation on the neural basis of ASD...
February 7, 2018: Neuroscience
https://www.readbyqxmd.com/read/29411548/searching-for-the-gut-microbial-contributing-factors-to-social-behavior-in-rodent-models
#2
REVIEW
Brittany D Needham, Weiyi Tang, Wei-Li Wu
Social impairment is one of the major symptoms in multiple psychiatric disorders, including autism spectrum disorder (ASD). Accumulated studies indicate a crucial role for the gut microbiota in social development, but these mechanisms remain unclear. This review focuses on two strategies adopted to elucidate the complicated relationship between gut bacteria and host social behavior. In a top-down approach, researchers have attempted to correlate behavioral abnormalities with altered gut microbial profiles in rodent models of ASD, including BTBR mice, maternal immune activation (MIA), maternal valproic acid (VPA) and maternal high-fat diet (MHFD) offspring...
February 7, 2018: Developmental Neurobiology
https://www.readbyqxmd.com/read/29371629/alterations-of-oral-microbiota-distinguish-children-with-autism-spectrum-disorders-from-healthy-controls
#3
Yanan Qiao, Mingtao Wu, Yanhuizhi Feng, Zhichong Zhou, Lei Chen, Fengshan Chen
Altered gut microbiota is associated with autism spectrum disorders (ASD), a group of complex, fast growing but difficult-to-diagnose neurodevelopmental disorders worldwide. However, the role of the oral microbiota in ASD remains unexplored. Via high-throughput sequencing of 111 oral samples in 32 children with ASD and 27 healthy controls, we demonstrated that the salivary and dental microbiota of ASD patients were highly distinct from those of healthy individuals. Lower bacterial diversity was observed in ASD children compared to controls, especially in dental samples...
January 25, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29360468/gut-immune-brain-dysfunction-in-autism-importance-of-sex
#4
Ashley M Kopec, Maria R Fiorentino, Staci D Bilbo
Autism Spectrum Disorder (ASD) is characterized by social behavior deficits, stereotypies, cognitive rigidity, and in some cases severe intellectual impairment and developmental delay. Although ASD is most widely identified by its neurological deficits, gastrointestinal issues are common in ASD. An intimate and complex relationship exists between the gut, the immune system, and the brain, leading to the hypothesis that ASD may be a systems-level disease affecting the gut and immune systems, in addition to the brain...
January 19, 2018: Brain Research
https://www.readbyqxmd.com/read/29355379/fecal-calprotectin-levels-correlate-with-main-domains-of-the-autism-diagnostic-interview-revised-adi-r-in-a-sample-of-individuals-with-autism-spectrum-disorders-from-slovakia
#5
K Babinská, A Tomova, H Celušáková, J Babková, G Repiská, A Kubranská, D Filčíková, L Siklenková, D Ostatníková
Autism spectrum disorders (ASD) are neurodevelopmental disorders characterized by impaired social interaction and communication, as well as repetitive behavior and restricted interests. There is convincing evidence that the intestinal inflammation is involved in etiology of ASD. Increased levels of inflammatory markers were shown to be associated with more aberrant behaviors and communication of subjects with ASD. Calprotectin in the feces is produced by activated neutrophils and epithelial cells of the gut mucosa, and its levels reflect local inflammation of the gastrointestinal tract...
December 30, 2017: Physiological Research
https://www.readbyqxmd.com/read/29340928/microbiota-signaling-pathways-that-influence-neurologic-disease
#6
REVIEW
Laura M Cox, Howard L Weiner
Though seemingly distinct and autonomous, emerging evidence suggests there is a bidirectional interaction between the intestinal microbiota and the brain. This crosstalk may play a substantial role in neurologic diseases, including anxiety, depression, autism, multiple sclerosis, Parkinson's disease, and, potentially, Alzheimer's disease. Long hypothesized by Metchnikoff and others well over 100 years ago, investigations into the mind-microbe axis is now seeing a rapid resurgence of research. If specific pathways and mechanisms of interaction are understood, it could have broad therapeutic potential, as the microbiome is environmentally acquired and can be modified to promote health...
January 16, 2018: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/29317592/gut-microbiome-populations-are-associated-with-structure-specific-changes-in-white-matter-architecture
#7
Irene M Ong, Jose G Gonzalez, Sean J McIlwain, Emily A Sawin, Andrew J Schoen, Nagesh Adluru, Andrew L Alexander, John-Paul J Yu
Altered gut microbiome populations are associated with a broad range of neurodevelopmental disorders including autism spectrum disorder and mood disorders. In animal models, modulation of gut microbiome populations via dietary manipulation influences brain function and behavior and has been shown to ameliorate behavioral symptoms. With striking differences in microbiome-driven behavior, we explored whether these behavioral changes are also accompanied by corresponding changes in neural tissue microstructure...
January 10, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29316320/human-microbiota-blood-group-antigens-and-disease
#8
REVIEW
D Rose Ewald, Susan C J Sumner
Far from being just "bugs in our guts," the microbiota interacts with the body in previously unimagined ways. Research into the genome and the microbiome has revealed that the human body and the microbiota have a long-established but only recently recognized symbiotic relationship; homeostatic balance between them regulates body function. That balance is fragile, easily disturbed, and plays a fundamental role in human health-our very survival depends on the healthy functioning of these microorganisms. Increasing rates of cardiovascular, autoimmune, and inflammatory diseases, as well as epidemics in obesity and diabetes in recent decades are believed to be explained, in part, by unintended effects on the microbiota from vaccinations, poor diets, environmental chemicals, indiscriminate antibiotic use, and "germophobia...
January 9, 2018: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/29305196/periconceptional-folate-deficiency-leads-to-autism-like-traits-in-wistar-rat-offspring
#9
Stéphanie Degroote, Darel Hunting, Larissa Takser
BACKGROUND: Folates in their role as key one carbon donors, are essential for two major pathways: the synthesis of DNA and RNA precursors and DNA methylation. A growing body of evidence from epidemiological studies indicates a possible association between nutritional and functional deficiency in folates and Autism Spectrum Disorders (ASD). However, there are no available behavioral animal studies on periconceptional one‑carbon donor deficiency during gestation and the autistic phenotype...
January 2, 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29277311/targeting-gut-microbiome-a-novel-and-potential-therapy-for-autism
#10
REVIEW
Yongshou Yang, Jinhu Tian, Bo Yang
Autism spectrum disorder (ASD) is a severely neurodevelopmental disorder that impairs a child's ability to communicate and interact with others. Children with neurodevelopmental disorder, including ASD, are regularly affected by gastrointestinal problems and dysbiosis of gut microbiota. On the other hand, humans live in a co-evolutionary association with plenty of microorganisms that resident on the exposed and internal surfaces of our bodies. The microbiome, refers to the collection of microbes and their genetic material, confers a variety of physiologic benefits to the host in many key aspects of life as well as being responsible for some diseases...
December 22, 2017: Life Sciences
https://www.readbyqxmd.com/read/29274915/differences-in-fecal-microbial-metabolites-and-microbiota-of-children-with-autism-spectrum-disorders
#11
Dae-Wook Kang, Zehra Esra Ilhan, Nancy G Isern, David W Hoyt, Daniel P Howsmon, Michael Shaffer, Catherine A Lozupone, Juergen Hahn, James B Adams, Rosa Krajmalnik-Brown
Evidence supporting that gut problems are linked to ASD symptoms has been accumulating both in humans and animal models of ASD. Gut microbes and their metabolites may be linked not only to GI problems but also to ASD behavior symptoms. Despite this high interest, most previous studies have looked mainly at microbial structure, and studies on fecal metabolites are rare in the context of ASD. Thus, we aimed to detect fecal metabolites that may be present at significantly different concentrations between 21 children with ASD and 23 neurotypical children and to investigate its possible link to human gut microbiome...
December 21, 2017: Anaerobe
https://www.readbyqxmd.com/read/29220570/neuromicrobiology-how-microbes-influence-the-brain
#12
Cesar de la Fuente-Nunez, Beatriz Torres Meneguetti, Octávio Luiz Franco, Timothy K Lu
We review here recent discoveries in the exciting new field of neuromicrobiology. This field encompasses the interactions between the microbiome and the central nervous system. The microbiome has a tremendous impact on human health. In particular, the gut microbiota may play a key role in many essential processes in health and disease via the activity of the gut-brain axis, possibly contributing to autism spectrum disorders, Alzheimer's disease, Parkinson's disease, depression, and anxiety disorder. Gut microbes may also be involved in nociception, complex host behaviors, and brain development...
December 28, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29183720/contemporary-applications-of-fecal-microbiota-transplantation-to-treat-intestinal-diseases-in-humans
#13
REVIEW
Christopher Staley, Alexander Khoruts, Michael J Sadowsky
The intestinal microbiota comprise an important organ that plays a vital role in host digestion, development, energy maintenance, hemostasis, and immunity. Disruption of the gut microbial community due to diet, lifestyle, or antibiotic exposure increases susceptibility to chronic infection and disease. Fecal microbiota transplantation (FMT) involves the transfer of gut microbiota from a healthy donor to a patient in order to restore normal diversity and function of the microbial community. This method has become a well established alternative therapy for the treatment of recurrent Clostridium difficile infection...
November 25, 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/29171095/the-gastrointestinal-microbiome-a-review
#14
REVIEW
P C Barko, M A McMichael, K S Swanson, D A Williams
The gastrointestinal microbiome is a diverse consortium of bacteria, archaea, fungi, protozoa, and viruses that inhabit the gut of all mammals. Studies in humans and other mammals have implicated the microbiome in a range of physiologic processes that are vital to host health including energy homeostasis, metabolism, gut epithelial health, immunologic activity, and neurobehavioral development. The microbial genome confers metabolic capabilities exceeding those of the host organism alone, making the gut microbiome an active participant in host physiology...
November 24, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29170940/association-of-autism-spectrum-disorders-and-inflammatory-bowel-disease
#15
Maunoo Lee, Jayasree Krishnamurthy, Apryl Susi, Carolyn Sullivan, Gregory H Gorman, Elizabeth Hisle-Gorman, Christine R Erdie-Lalena, Cade M Nylund
Autism spectrum disorders (ASD) and inflammatory bowel disease (IBD) both have multifactorial pathogenesis with an increasing number of studies demonstrating gut-brain associations. We aim to examine the association between ASD and IBD using strict classification criteria for IBD. We conducted a retrospective case-cohort study using records from the Military Health System database with IBD defined as having one encounter with an ICD-9-CM diagnostic code for IBD and at least one outpatient prescription dispensed for a medication to treat IBD...
November 23, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/29166585/brain-immunity-gut-big-links-between-pregnancy-and-autism
#16
Myka L Estes, A Kimberley McAllister
Although dysregulation of brain, immune, and gut physiology during pregnancy have each been implicated in neuropsychiatric disorders, whether and how these presumably distinct systems are linked to cause disease is unclear. Kim et al. (2017) and Shin Yim et al. (2017) identify a pathway to explain how these aspects of our physiology are deeply and inextricably connected.
November 21, 2017: Immunity
https://www.readbyqxmd.com/read/29124056/microbial-therapeutics-designed-for-infant-health
#17
REVIEW
Claire Watkins, Catherine Stanton, C Anthony Ryan, R Paul Ross
Acknowledgment of the gut microbiome as a vital asset to health has led to multiple studies attempting to elucidate its mechanisms of action. During the first year of life, many factors can cause fluctuation in the developing gut microbiome. Host genetics, maternal health status, mode of delivery, gestational age, feeding regime, and perinatal antibiotic usage, are known factors which can influence the development of the infant gut microbiome. Thus, the microbiome of vaginally born, exclusively breastfed infants at term, with no previous exposure to antibiotics, either directly or indirectly from the mother, is to be considered the "gold standard...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/29122491/inflammation-and-autism-from-maternal-gut-to-fetal-brain
#18
Ivan Osokine, Adrian Erlebacher
Maternal immune activation (MIA) during pregnancy is associated with an increased risk of behavioral disorders in the offspring of affected mothers. Two recent studies highlight how maternal inflammation disrupts inhibitory interneuron networks and suggest that the maternal gut microbiome may be a contributing risk factor for MIA-induced behavioral abnormalities.
November 6, 2017: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/29102384/increased-stool-immunoglobulin-a-level-in-children-with-autism-spectrum-disorders
#19
Jiaxiu Zhou, Fusheng He, Feng Yang, Zheng Yang, Yingjun Xie, Shaoming Zhou, Jingwen Liang, Ruihuan Xu, Yan Wang, Hailiang Guo, Wenhao Zhou, Mingbang Wang
BACKGROUND: There are currently no effective treatments for the core symptoms of autism spectrum disorders (ASDs). However, alleviating gastrointestinal (GI) problems, which are prevalent in ASD patients, can significantly improve the core symptoms of autism. Previous studies have associated GI disorders in ASD patients with abnormal gut microbiota, although few disease-related microorganisms have been identified. Considering that the gut microbiome affects the intestinal immune system and the patient's behavior, and that immunoglobulin A (IgA) is the main antibody secreted by intestinal immune cells, we investigated stool IgA content as a means of understanding the gut immune status of ASD patients...
October 25, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/29093639/rapid-assessment-of-microbiota-changes-in-individuals-with-autism-spectrum-disorder-using-bacteria-derived-membrane-vesicles-in-urine
#20
Yunjin Lee, Jin-Young Park, Eun-Hwa Lee, Jinho Yang, Bo-Ri Jeong, Yoon-Keun Kim, Ju-Young Seoh, SoHyun Lee, Pyung-Lim Han, Eui-Jung Kim
Individuals with autism spectrum disorder (ASD) have altered gut microbiota, which appears to regulate ASD symptoms via gut microbiota-brain interactions. Rapid assessment of gut microbiota profiles in ASD individuals in varying physiological contexts is important to understanding the role of the microbiota in regulating ASD symptoms. Microbiomes secrete extracellular membrane vesicles (EVs) to communicate with host cells and secreted EVs are widely distributed throughout the body including the blood and urine...
October 2017: Experimental Neurobiology
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