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https://www.readbyqxmd.com/read/29028817/mitochondrial-dysfunction-in-the-gastrointestinal-mucosa-of-children-with-autism-a-blinded-case-control-study
#1
Shannon Rose, Sirish C Bennuri, Katherine F Murray, Timothy Buie, Harland Winter, Richard Eugene Frye
Gastrointestinal (GI) symptoms are prevalent in autism spectrum disorder (ASD) but the pathophysiology is poorly understood. Imbalances in the enteric microbiome have been associated with ASD and can cause GI dysfunction potentially through disruption of mitochondrial function as microbiome metabolites modulate mitochondrial function and mitochondrial dysfunction is highly associated with GI symptoms. In this study, we compared mitochondrial function in rectal and cecum biopsies under the assumption that certain microbiome metabolites, such as butyrate and propionic acid, are more abundant in the cecum as compared to the rectum...
2017: PloS One
https://www.readbyqxmd.com/read/29023853/antibiotics-gut-microbiome-and-obesity
#2
Karen S W Leong, José G B Derraik, Paul L Hofman, Wayne S Cutfield
Antibiotics have been hailed by many as 'miracle drugs' that have been effectively treating infectious diseases for over a century, leading to a marked reduction in morbidity and mortality. However, with the increasing use of antibiotics, we are now faced not only with the increasing threat of antibiotic resistance, but also with a rising concern about potential long-term effects of antibiotics on human health, including the development of obesity. The obesity pandemic continues to increase, a problem that affects both adults and children alike...
October 12, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29023380/the-gut-microbiome-feelings-of-the-brain-a-perspective-for-non-microbiologists
#3
REVIEW
Aaron Lerner, Sandra Neidhöfer, Torsten Matthias
Objectives: To comprehensively review the scientific knowledge on the gut-brain axis. Methods: Various publications on the gut-brain axis, until 31 July 2017, were screened using the Medline, Google, and Cochrane Library databases. The search was performed using the following keywords: "gut-brain axis", "gut-microbiota-brain axis", "nutrition microbiome/microbiota", "enteric nervous system", "enteric glial cells/network", "gut-brain pathways", "microbiome immune system", "microbiome neuroendocrine system" and "intestinal/gut/enteric neuropeptides"...
October 12, 2017: Microorganisms
https://www.readbyqxmd.com/read/28966571/cross-talk-the-microbiota-and-neurodevelopmental-disorders
#4
REVIEW
John R Kelly, Chiara Minuto, John F Cryan, Gerard Clarke, Timothy G Dinan
Humans evolved within a microbial ecosystem resulting in an interlinked physiology. The gut microbiota can signal to the brain via the immune system, the vagus nerve or other host-microbe interactions facilitated by gut hormones, regulation of tryptophan metabolism and microbial metabolites such as short chain fatty acids (SCFA), to influence brain development, function and behavior. Emerging evidence suggests that the gut microbiota may play a role in shaping cognitive networks encompassing emotional and social domains in neurodevelopmental disorders...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28965876/microbiota-related-changes-in-bile-acid-tryptophan-metabolism-are-associated-with-gastrointestinal-dysfunction-in-a-mouse-model-of-autism
#5
Anna V Golubeva, Susan A Joyce, Gerard Moloney, Aurelijus Burokas, Eoin Sherwin, Silvia Arboleya, Ian Flynn, Dmitry Khochanskiy, Angela Moya-Pérez, Veronica Peterson, Kieran Rea, Kiera Murphy, Olga Makarova, Sergey Buravkov, Niall P Hyland, Catherine Stanton, Gerard Clarke, Cormac G M Gahan, Timothy G Dinan, John F Cryan
Autism spectrum disorder (ASD) is one of the most prevalent neurodevelopmental conditions worldwide. There is growing awareness that ASD is highly comorbid with gastrointestinal distress and altered intestinal microbiome, and that host-microbiome interactions may contribute to the disease symptoms. However, the paucity of knowledge on gut-brain axis signaling in autism constitutes an obstacle to the development of precision microbiota-based therapeutics in ASD. To this end, we explored the interactions between intestinal microbiota, gut physiology and social behavior in a BTBR T(+)Itpr3(tf)/J mouse model of ASD...
September 21, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28946927/food-and-the-gut-relevance-to-some-of-the-autisms
#6
Paul Whiteley
Complex, diverse and rarely appearing without comorbidity, the autism spectrum disorders continue to be a source of research interest. With core symptoms variably impacting on social communication skills, the traditional focus of many research efforts has centred on the brain and how genetic and environmental processes impact on brain structure, function and/or connectivity to account for various behavioural presentations. Alongside emerging ideas on autistic traits being present in various clinical states, the autisms, and the overrepresentation of several comorbid conditions impacting on quality of life, other research avenues have opened up...
September 26, 2017: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/28938872/effect-of-vitamin-a-supplementation-on-gut-microbiota-in-children-with-autism-spectrum-disorders-a-pilot-study
#7
Juan Liu, Xiao Liu, Xue-Qin Xiong, Ting Yang, Ting Cui, Na-Li Hou, Xi Lai, Shu Liu, Min Guo, Xiao-Hua Liang, Qian Cheng, Jie Chen, Ting-Yu Li
BACKGROUND: Dysbiosis of gut microbiota are commonly reported in autism spectrum disorder (ASD) and may contribute to behavioral impairment. Vitamin A (VA) plays a role in regulation of gut microbiota. This study was performed to investigate the role of VA in the changes of gut microbiota and changes of autism functions in children with ASD. RESULTS: Sixty four, aged 1 to 8 years old children with ASD completed a 6-month follow-up study with VA intervention. High-performance liquid chromatography was used to assess plasma retinol levels...
September 22, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28925886/the-microbiota-gut-brain-axis-in-neuropsychiatric-disorders-pathophysiological-mechanisms-and-novel-treatments
#8
Yong-Ku Kim, Cheolmin Shin
BACKGROUND: The human gut microbiome comprise a huge number of microorganisms with co-evolutionary associations with humans. It has been repeatedly revealed that bidirectional communication exists between the brain and the gut and involves neural, hormonal, and immunological pathways. Evidences from neuroscience researches over the past few years suggest that microbiota is essential for the development and maturation of brain systems that are associated to stress responses. METHOD: This review provides that the summarization of the communication among microbiota, gut and brain and the results of preclinical and clinical studies on gut microbiota used in treatments for neuropsychiatric disorders...
September 15, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28922251/shank3-regulates-intestinal-barrier-function-through-modulating-zo-1-expression-through-the-pkc%C3%AE%C2%B5-dependent-pathway
#9
Shu-Chen Wei, Hsin-Fang Yang-Yen, Po-Nien Tsao, Meng-Tzu Weng, Chien-Chih Tung, Linda C H Yu, Liang-Chuan Lai, Jen-Hao Hsiao, Eric Y Chuang, Chia-Tung Shun, Yen-Hsuan Ni, Ramnik J Xavier, Daniel K Podolsky, Jeffery J Y Yen, Jau-Min Wong
BACKGROUND: The integrity of the gut barrier in patients with inflammatory bowel disease is known to be impaired but the exact mechanisms remain mostly unknown. SHANK3 mutations are associated with autism, and patients with autism are known to have higher proportions of inflammatory bowel disease. Here, we explore the role of SHANK3 in inflammatory bowel disease, both in vivo and in vitro. METHODS: Dextran sulfate sodium colitis was induced in SHANK3 knockout mice...
August 23, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28906292/shank3-regulates-intestinal-barrier-function-through-modulating-zo-1-expression-through-the-pkc%C3%AE%C2%B5-dependent-pathway
#10
Shu-Chen Wei, Hsin-Fang Yang-Yen, Po-Nien Tsao, Meng-Tzu Weng, Chien-Chih Tung, Linda C H Yu, Liang-Chuan Lai, Jen-Hao Hsiao, Eric Y Chuang, Chia-Tung Shun, Yen-Hsuan Ni, Ramnik J Xavier, Daniel K Podolsky, Jeffery J Y Yen, Jau-Min Wong
BACKGROUND: The integrity of the gut barrier in patients with inflammatory bowel disease is known to be impaired but the exact mechanisms remain mostly unknown. SHANK3 mutations are associated with autism, and patients with autism are known to have higher proportions of inflammatory bowel disease. Here, we explore the role of SHANK3 in inflammatory bowel disease, both in vivo and in vitro. METHODS: Dextran sulfate sodium colitis was induced in SHANK3 knockout mice...
October 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28902840/maternal-gut-bacteria-promote-neurodevelopmental-abnormalities-in-mouse-offspring
#11
Sangdoo Kim, Hyunju Kim, Yeong Shin Yim, Soyoung Ha, Koji Atarashi, Tze Guan Tan, Randy S Longman, Kenya Honda, Dan R Littman, Gloria B Choi, Jun R Huh
Maternal immune activation (MIA) contributes to behavioural abnormalities associated with neurodevelopmental disorders in both primate and rodent offspring. In humans, epidemiological studies suggest that exposure of fetuses to maternal inflammation increases the likelihood of developing autism spectrum disorder. In pregnant mice, interleukin-17a (IL-17a) produced by T helper 17 (TH17) cells (CD4(+) T helper effector cells involved in multiple inflammatory conditions) induces behavioural and cortical abnormalities in the offspring exposed to MIA...
September 13, 2017: Nature
https://www.readbyqxmd.com/read/28852308/influence-of-gut-microbiota-on-neuropsychiatric-disorders
#12
REVIEW
María Carmen Cenit, Yolanda Sanz, Pilar Codoñer-Franch
The last decade has witnessed a growing appreciation of the fundamental role played by an early assembly of a diverse and balanced gut microbiota and its subsequent maintenance for future health of the host. Gut microbiota is currently viewed as a key regulator of a fluent bidirectional dialogue between the gut and the brain (gut-brain axis). A number of preclinical studies have suggested that the microbiota and its genome (microbiome) may play a key role in neurodevelopmental and neurodegenerative disorders...
August 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28805460/case-study-of-homeopathic-bowel-nosode-remedies-for-dysbiotic-japanese-patients
#13
Yoko Uchiyama-Tanaka
BACKGROUND: The composition of intestinal microbiota is very important in human health. Gastrointestinal disturbances are among the symptoms commonly reported by individuals diagnosed with chronic diseases, such as inflammatory bowel disease, autism, and chronic fatigue syndrome. The effects of probiotics and prebiotics for dysbiosis have been reported in many studies. Bowel nosodes are homeopathic remedies made from human gut microbiota. OBJECTIVE: Bowel nosodes made from the intestinal bacteria of European patients from the 1900s were administered to Japanese patients suffering from gastrointestinal disturbances, such as constipation and diarrhea, to determine their therapeutic efficacy...
August 14, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28799778/how-important-is-tryptophan-in-human-health
#14
Joanna Kałużna-Czaplińska, Paulina Gątarek, Salvatore Chirumbolo, Max Stanley Chartrand, Geir Bjørklund
Tryptophan (Trp) is an amino acid and an essential component of the human diet. It plays a crucial role in many metabolic functions. Clinicians can use Trp levels in the course of diagnosing various metabolic disorders and the symptoms associated with those diseases. Furthermore, supplementation with this amino acid is considered in the treatment of depression and sleep disorders, mainly due to the Trp relationship with the synthesis of serotonin (5-HT) and melatonin. It is also used in helping to resolve cognitive disorders, anxiety, or neurodegenerative diseases...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28768369/recent-developments-in-understanding-the-role-of-the-gut-microbiota-in-brain-health-and-disease
#15
REVIEW
Eoin Sherwin, Timothy G Dinan, John F Cryan
There is a growing appreciation of the role of the gut microbiota in all aspects of health and disease, including brain health. Indeed, roles for the bacterial commensals in various psychiatric and neurological conditions, such as depression, autism, stroke, Parkinson's disease, and Alzheimer's disease, are emerging. Microbiota dysregulation has been documented in all of these conditions or in animal models thereof. Moreover, depletion or modulation of the gut microbiota can affect the severity of the central pathology or behavioral deficits observed in a variety of brain disorders...
August 2, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28691768/microbiome-inflammation-epigenetic-alterations-and-mental-diseases
#16
REVIEW
Reza Alam, Hamid M Abdolmaleky, Jin-Rong Zhou
Major mental diseases such as autism, bipolar disorder, schizophrenia, and major depressive disorder are debilitating illnesses with complex etiologies. Recent findings show that the onset and development of these illnesses cannot be well described by the one-gene; one-disease approach. Instead, their clinical presentation is thought to result from the regulative interplay of a large number of genes. Even though the involvement of many genes are likely, up regulating and activation or down regulation and silencing of these genes by the environmental factors play a crucial role in contributing to their pathogenesis...
July 10, 2017: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/28682227/-gut-microbiota-and-efficacy-of-cancer-therapies
#17
Marie Vétizou, Romain Daillère, Laurence Zitvogel
The gut microbiota is known to affect digestion, protection against pathogens infection, immune system maturation and enteric nervous system development, but others links have also been established with diabetes, obesity, autism and cancer. Lately, bacterial species from the gut have been involved in tumor immunosurveillance. Natural or mediated by treatment such as chemotherapy or immunotherapy, anti-tumoral immune responses seem to rely on gut microbiota. The bacteria involved and their mechanisms of action are different according to the treatment of interest...
2017: Biologie Aujourd'hui
https://www.readbyqxmd.com/read/28680792/using-animal-models-to-study-the-role-of-the-gut-brain-axis-in-autism
#18
REVIEW
Jess Nithianantharajah, Gayathri K Balasuriya, Ashley E Franks, Elisa L Hill-Yardin
PURPOSE OF REVIEW: Individuals with autism spectrum disorders (ASD) commonly also suffer from gastrointestinal (GI) dysfunction; however, few animal model studies have systematically examined both ASD and GI dysfunction. In this review, we highlight studies investigating GI dysfunction and alterations in gut microbiota in animal models of ASD with the aim of determining if routinely used microbiology and enteric neurophysiology assays could expand our understanding of the link between the two...
2017: Current Developmental Disorders Reports
https://www.readbyqxmd.com/read/28666895/the-microbiome-and-disorders-of-the-central-nervous-system
#19
Valeria D Felice, Siobhain M O'Mahony
Alterations of the gut microbiota have been associated with stress-related disorders including depression and anxiety and irritable bowel syndrome (IBS). More recently, researchers have started investigating the implication of perturbation of the microbiota composition in neurodevelopmental disorders including autism spectrum disorders and Attention-Deficit Hypersensitivity Disorder (ADHD). In this review we will discuss how the microbiota is established and its functions in maintaining health. We also summarize both pre and post-natal factors that shape the developing neonatal microbiota and how they may impact on health outcomes with relevance to disorders of the central nervous system...
June 27, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28624097/serum-zonulin-gut-permeability-and-the-pathogenesis-of-autism-spectrum-disorders-cause-effect-or-an-epiphenomenon
#20
EDITORIAL
Alessio Fasano, Ivor Hill
No abstract text is available yet for this article.
September 2017: Journal of Pediatrics
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