keyword
MENU ▼
Read by QxMD icon Read
search

Bacteria brain

keyword
https://www.readbyqxmd.com/read/28228622/a-case-of-hyperammonemia-with-obstructive-urinary-tract-infection-by-urease-producing-bacteria
#1
Toshiaki Goda, Kotaro Watanabe, Junya Kobayashi, Yasuharu Nagai, Nobuyuki Ohara, Daisuke Takahashi
A 79-year-old woman was admitted emergently for disturbance of consciousness. Her consciousness level was Japan coma scale 20, and she presented with hypermyotonia. Brain magnetic resonance imaging and cerebrospinal fluid examination showed normal findings. Her blood tests showed an increased ammonia level of 291 μg/dl with normal liver function. We catheterized the bladder for urinary retention. Eight hours after admission, the blood level of ammonia decreased to 57 μg/dl and the patient's consciousness level improved...
February 22, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/28223922/gut-microbiota-a-potential-regulator-of-neurodevelopment
#2
REVIEW
Paola Tognini
During childhood, our brain is exposed to a variety of environmental inputs that can sculpt synaptic connections and neuronal circuits, with subsequent influence on behavior and learning processes. Critical periods of neurodevelopment are windows of opportunity in which the neuronal circuits are extremely plastic and can be easily subjected to remodeling in response to experience. However, the brain is also more susceptible to aberrant stimuli that might lead to altered developmental trajectories. Intriguingly, postnatal brain development is paralleled by the maturation of the gut microbiota: the ecosystem of symbionts populating our gastro-intestinal tract...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28223318/a-drosophila-model-of-fragile-x-syndrome-exhibits-defects-in-phagocytosis-by-innate-immune-cells
#3
Reed M O'Connor, Elizabeth F Stone, Charlotte R Wayne, Emily V Marcinkevicius, Matt Ulgherait, Rebecca Delventhal, Meghan M Pantalia, Vanessa M Hill, Clarice G Zhou, Sophie McAllister, Anna Chen, Jennifer S Ziegenfuss, Wesley B Grueber, Julie C Canman, Mimi M Shirasu-Hiza
Fragile X syndrome, the most common known monogenic cause of autism, results from the loss of FMR1, a conserved, ubiquitously expressed RNA-binding protein. Recent evidence suggests that Fragile X syndrome and other types of autism are associated with immune system defects. We found that Drosophila melanogaster Fmr1 mutants exhibit increased sensitivity to bacterial infection and decreased phagocytosis of bacteria by systemic immune cells. Using tissue-specific RNAi-mediated knockdown, we showed that Fmr1 plays a cell-autonomous role in the phagocytosis of bacteria...
February 21, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28215162/gut-brain-axis-role-of-lipids-in-the-regulation-of-inflammation-pain-and-cns-diseases
#4
Roberto Russo, Claudia Cristiano, Carmen Avagliano, Carmen De Caro, Giovanna La Rana, Giuseppina Mattace Raso, Roberto Berni Canani, Rosaria Meli, Antonio Calignano
The human gut is a composite anaerobic environment with a large, diverse and dynamic enteric microbiota, represented by more than 100 trillion microorganisms, including at least 1000 distinct species. The discovery that a different microbial composition can influence behavior and cognition, and in turn the nervous system can indirectly influence enteric microbiota composition, has significantly contributed to establish the well-accepted concept of gut-brain axis. This hypothesis is supported by several evidence showing mutual mechanisms, which involve the vague nerve, the immune system, the hypothalamic-pituitary-adrenal (HPA) axis modulation and the bacteria-derived metabolites...
February 16, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28204955/inactivation-of-non-canonical-cyclic-nucleotides-hydrolysis-and-transport
#5
Erich H Schneider, Roland Seifert
This chapter addresses cNMP hydrolysis by phosphodiesterases (PDEs) and export by multidrug resistance associated proteins (MRPs). Both mechanisms are well-established for the canonical cNMPs, cAMP, and cGMP. Increasing evidence shows that non-canonical cNMPs (specifically cCMP, cUMP) are also PDE and MRP substrates. Hydrolysis of cUMP is achieved by PDE 3A, 3B, and 9A, which possibly explains the cUMP-degrading activities previously reported for heart, adipose tissue, and brain. Regarding cCMP, the only known "conventional" (class I) PDE that hydrolyzes cCMP is PDE7A...
February 16, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28194099/gut-to-brain-dysbiosis-mechanisms-linking-western-diet-consumption-the-microbiome-and-cognitive-impairment
#6
REVIEW
Emily E Noble, Ted M Hsu, Scott E Kanoski
Consumption of a Western Diet (WD) that is high in saturated fat and added sugars negatively impacts cognitive function, particularly mnemonic processes that rely on the integrity of the hippocampus. Emerging evidence suggests that the gut microbiome influences cognitive function via the gut-brain axis, and that WD factors significantly alter the proportions of commensal bacteria in the gastrointestinal tract. Here we review mechanisms through which consuming a WD negatively impacts neurocognitive function, with a particular focus on recent evidence linking the gut microbiome with dietary- and metabolic-associated hippocampal impairment...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28179108/revisiting-metchnikoff-age-related-alterations-in-microbiota-gut-brain-axis-in-the-mouse
#7
Karen A Scott, Masayuki Ida, Veronica L Peterson, Jack A Prenderville, Gerard M Moloney, Takayuki Izumo, Kiera Murphy, Amy Murphy, R Paul Ross, Catherine Stanton, Timothy G Dinan, John F Cryan
Over the last decade, there has been increased interest in the role of the gut microbiome in health including brain health. This is by no means a new theory; Elie Metchnikoff proposed over a century ago that targeting the gut by consuming lactic acid bacteria such as those in yogurt, could improve or delay the onset of cognitive decline associated with ageing. However, there is limited information characterising the relationship between the behavioural and physiological sequelae of aging and alterations in the gut microbiome...
February 4, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28176617/progressive-multifocal-leukoencephalopathy-in-a-kidney-transplant-recipient
#8
Federico Cicora, Javier Roberti
Progressive multifocal leukoencephalopathy (PML) is a debilitating and often fatal viral disease of the central nervous system. A 39-year-old male kidney transplant recipient presented to our hospital with weakness of the left arm and leg, his immunosuppressive regimen consisted of tacrolimus, mycophenolate sodium, and meprednisone. Magnetic resonance imaging of the brain revealed hypercellularity in neural tissue and a lesion affecting the right ventral and lateral areas of the thalamus and the posterior limb of the internal capsule...
February 7, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28174598/review-on-the-role-of-the-human-polyomavirus-jc-in-the-development-of-tumors
#9
REVIEW
Serena Delbue, Manola Comar, Pasquale Ferrante
Almost one fifth of human cancers worldwide are associated with infectious agents, either bacteria or viruses, and this makes the possible association between infections and tumors a relevant research issue. We focused our attention on the human Polyomavirus JC (JCPyV), that is a small, naked DNA virus, belonging to the Polyomaviridae family. It is the recognized etiological agent of the Progressive Multifocal Leukoencephalopathy (PML), a fatal demyelinating disease, occurring in immunosuppressed individuals...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28164854/the-microbiome-gut-brain-axis-in-health-and-disease
#10
REVIEW
Timothy G Dinan, John F Cryan
Gut microbes are capable of producing most neurotransmitters found in the human brain. Evidence is accumulating to support the view that gut microbes influence central neurochemistry and behavior. Irritable bowel syndrome is regarded as the prototypic disorder of the brain-gut-microbiota axis that can be responsive to probiotic therapy. Translational studies indicate that certain bacteria may have an impact on stress responses and cognitive functioning. Manipulating the gut microbiota with psychobiotics, prebiotics, or even antibiotics offers a novel approach to altering brain function and treating gut-brain axis disorders, such as depression and autism...
March 2017: Gastroenterology Clinics of North America
https://www.readbyqxmd.com/read/28164787/factor-h-specifically-capture-novel-factor-h-binding-proteins-of-streptococcus-suis-and-contribute-to-the-virulence-of-the-bacteria
#11
Quan Li, Caifeng Ma, Yang Fu, Yanan He, Yanfei Yu, Dechao Du, Huochun Yao, Chengping Lu, Wei Zhang
Factor H (FH), a regulatory protein of the complement system, can bind specifically to factor H-binding proteins (FHBPs) of Streptococcus suis serotype 2 (SS2), which contribute to evasion of host innate immune defenses. In the present study, we aimed to identify novel FHBPs and characterize the biological functions of FH in SS2 pathogenesis. Here, a method that combined proteomics and Far-western blotting was developed to identify the surface FHBPs of SS2. With this method, fourteen potential novel FHBPs were identified among SS2 surface proteins...
March 2017: Microbiological Research
https://www.readbyqxmd.com/read/28163966/an-active-principle-of-nigella-sativa-l-thymoquinone-showing-significant-antimicrobial-activity-against-anaerobic-bacteria
#12
Mohammad Akram Randhawa, Awwad Khalaf Alenazy, Majed Gorayan Alrowaili, Jamith Basha
AIM/BACKGROUND: Thymoquinone (TQ) is the major active principle of Nigella sativa seed (black seed) and is known to control many fungi, bacteria, and some viruses. However, the activity of TQ against anaerobic bacteria is not well demonstrated. Anaerobic bacteria can cause severe infections, including diarrhea, aspiration pneumonia, and brain abscess, particularly in immunodeficient individuals. The present study aimed to investigate the in vitro antimicrobial activity of TQ against some anaerobic pathogens in comparison to metronidazole...
January 2017: Journal of Intercultural Ethnopharmacology
https://www.readbyqxmd.com/read/28161446/drunk-bugs-chronic-vapour-alcohol-exposure-induces-marked-changes-in-the-gut-microbiome-in-mice
#13
Veronica L Peterson, Nicholas J Jury, Raúl Cabrera-Rubio, Lorraine A Draper, Fiona Crispie, Paul D Cotter, Timothy G Dinan, Andrew Holmes, John F Cryan
The gut microbiota includes a community of bacteria that play an integral part in host health and biological processes. Pronounced and repeated findings have linked gut microbiome to stress, anxiety, and depression. Currently, however, there remains only a limited set of studies focusing on microbiota change in substance abuse, including alcohol use disorder. To date, no studies have investigated the impact of vapour alcohol administration on the gut microbiome. For research on gut microbiota and addiction to proceed, an understanding of how route of drug administration affects gut microbiota must first be established...
April 14, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28147375/fecal-microbiota-transplantation-in-inflammatory-bowel-disease
#14
REVIEW
Walter Reinisch
The etiology of inflammatory bowel disease (IBD) is unknown, but it is thought to arise from an aberrant immune response to a change in colonic environment in a genetically susceptible individual. The intestinal microbiota are located at the complex interface of the epithelial barrier and are sensitive to changes in environmental factors, such as diets, drugs or smoking and signals derived from the intestinal immune system and the gut-brain axis. In patients with IBD, an imbalance in the structural and/or functional configuration of the intestinal microbiota leading to the disruption of the host-microorganism homeostasis (dysbiosis) has been reproducibly reported...
2017: Digestive Diseases
https://www.readbyqxmd.com/read/28144744/food-matters-how-the-microbiome-and-gut-brain-interaction-might-impact-the-development-and-course-of-anorexia-nervosa
#15
REVIEW
Beate Herpertz-Dahlmann, Jochen Seitz, John Baines
Anorexia nervosa (AN) is one of the most common chronic illnesses in female adolescents and exhibits the highest mortality risk of all psychiatric disorders. Evidence for the effectiveness of psychotherapeutic or psychopharmacological interventions is weak. Mounting data indicate that the gut microbiome interacts with the central nervous system and the immune system by neuroendocrine, neurotransmitter, neurotrophic and neuroinflammatory afferent and efferent pathways. There is growing evidence that the gut microbiota influences weight regulation and psychopathology, such as anxiety and depression...
January 31, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/28139935/systemic-activation-of-toll-like-receptor-2-suppresses-mitochondrial-respiration-and-exacerbates-hypoxic-ischemic-injury-in-the-developing-brain
#16
Amin Mottahedin, Pernilla Svedin, Syam Nair, Carl-Johan Mohn, Xiaoyang Wang, Henrik Hagberg, Joakim Ek, Carina Mallard
Infection and inflammation are known risk factors for neonatal brain injury. Mycoplasma and Gram-positive bacteria, for which Toll-like receptor 2 (TLR2) plays a key role in recognition and inflammatory response, are among the most common pathogens in the perinatal period. Here, we report that systemic activation of TLR2 by Pam3CSK4 (P3C) increases neural tissue loss and demyelination induced by subsequent hypoxia-ischemia (HI) in neonatal mice. High-resolution respirometry of brain isolated mitochondria revealed that P3C suppresses ADP-induced oxidative phosphorylation, the main pathway of cellular energy production...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28135303/microrna-and-mrna-transcriptome-profiling-in-primary-human-astrocytes-infected-with-borrelia-burgdorferi
#17
Timothy Casselli, Humaira Qureshi, Elizabeth Peterson, Danielle Perley, Emily Blake, Bradley Jokinen, Ata Abbas, Sergei Nechaev, John A Watt, Archana Dhasarathy, Catherine A Brissette
Lyme disease is caused by infection with the bacterium Borrelia burgdorferi (Bb), which is transmitted to humans by deer ticks. The infection manifests usually as a rash and minor systemic symptoms; however, the bacteria can spread to other tissues, causing joint pain, carditis, and neurological symptoms. Lyme neuroborreliosis presents itself in several ways, such as Bell's palsy, meningitis, and encephalitis. The molecular basis for neuroborreliosis is poorly understood. Analysis of the changes in the expression levels of messenger RNAs and non-coding RNAs, including microRNAs, following Bb infection could therefore provide vital information on the pathogenesis and clinical symptoms of neuroborreliosis...
2017: PloS One
https://www.readbyqxmd.com/read/28126352/preclinical-evaluation-of-luffa-operculata-cogn-and-its-main-active-principle-in-the-treatment-of-bacterial-rhinosinusitis
#18
Leonardo Silva, Henrique Olival Costa, Flávia Coelho de Souza, Elaine Monteiro Cardoso Lopes, Suely Mitoi Ykko Ueda
INTRODUCTION: The prevalence of rhinosinusitis is quite high. Despite the widespread use of antibiotics for rhinosinusitis, there are other forms of treatment, including phytotherapy. One of the most widely used herbal medicines for treatment of rhinosinusitis is Luffa operculata. OBJECTIVE: This study aimed to evaluate the efficacy of topical nasal solution of the aqueous extract of L. operculata, determining the toxicity to its use and identifying the active principles presented in the aqueous extract...
December 26, 2016: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28114852/cyanide-poisoning-of-a-cooper-s-hawk-accipiter-cooperii
#19
J Christian Franson
A Cooper's hawk ( Accipiter cooperii) was found dead in a ditch leading from a heap leach pad at a gold mine in Nevada. Observations at autopsy included an absence of external lesions, traces of subcutaneous and coronary fat, no food in the upper gastrointestinal tract, and no lesions in the viscera. Cyanide concentrations (µg/g ww) were 5.04 in blood, 3.88 in liver, and 1.79 in brain. No bacteria or viruses were isolated from tissues, and brain cholinesterase activity was within the normal range for a Cooper's hawk...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28110777/streptococcus-suis-small-rna-rss04-contributes-to-the-induction-of-meningitis-by-regulating-capsule-synthesis-and-by-inducing-biofilm-formation-in-a-mouse-infection-model
#20
Genhui Xiao, Huanyu Tang, Shouming Zhang, Haiyan Ren, Jiao Dai, Liying Lai, Chengping Lu, Huochun Yao, Hongjie Fan, Zongfu Wu
Streptococcus suis (SS) is an important pathogen for pigs, and it is also considered as a zoonotic agent for humans. Meningitis is one of the most common features of the infection caused by SS, but little is known about the mechanisms of SS meningitis. Recent studies have revealed that small RNAs (sRNAs) have emerged as key regulators of the virulence in several bacteria. In the previous study, we reported that SS sRNA rss04 was up-regulated in pig cerebrospinal fluid and contributes to SS virulence in a zebrafish infection model...
February 2017: Veterinary Microbiology
keyword
keyword
44816
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"