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https://www.readbyqxmd.com/read/29058703/metabolic-shift-induced-by-systemic-activation-of-t-cells-in-pd-1-deficient-mice-perturbs-brain-monoamines-and-emotional-behavior
#1
Michio Miyajima, Baihao Zhang, Yuki Sugiura, Kazuhiro Sonomura, Matteo M Guerrini, Yumi Tsutsui, Mikako Maruya, Alexis Vogelzang, Kenji Chamoto, Kurara Honda, Takatoshi Hikida, Satomi Ito, Hongyan Qin, Rikako Sanuki, Keiichiro Suzuki, Takahisa Furukawa, Yasushi Ishihama, Fumihiko Matsuda, Makoto Suematsu, Tasuku Honjo, Sidonia Fagarasan
T cells reorganize their metabolic profiles after being activated, but the systemic metabolic effect of sustained activation of the immune system has remained unexplored. Here we report that augmented T cell responses in Pdcd1(-/-) mice, which lack the inhibitory receptor PD-1, induced a metabolic serum signature characterized by depletion of amino acids. We found that the depletion of amino acids in serum was due to the accumulation of amino acids in activated Pdcd1(-/-) T cells in the lymph nodes. A systemic decrease in tryptophan and tyrosine led to substantial deficiency in the neurotransmitters serotonin and dopamine in the brain, which resulted in behavioral changes dominated by anxiety-like behavior and exacerbated fear responses...
October 23, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28943292/enhanced-fear-and-altered-neuronal-activation-in-forebrain-limbic-regions-of-cx3cr1-deficient-mice
#2
Inga Schubert, Rebecca Ahlbrand, Andrew Winter, Lauren Vollmer, Ian Lewkowich, Renu Sah
Mounting evidence supports immune dysfunction in psychiatric conditions such as post-traumatic stress disorder (PTSD). The association of immunomodulatory mechanisms with PTSD-relevant behavior and physiology is not well understood. Communication between neurons and microglia, resident immune cells of the central nervous system, is crucial for optimal regulation of behavior and physiology. In this regard, the fractalkine CX3CL1, secreted from neurons and its target, the microglial CX3CR1 receptor represent a primary neuron-microglia inter-regulatory system important for synaptic plasticity and function...
September 21, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28888955/distinct-roles-of-neuronal-and-microglial-cb2-cannabinoid-receptors-in-the-mouse-hippocampus
#3
Yong Li, Jimok Kim
The effects of cannabinoids are primarily mediated by type-1 cannabinoid receptors in the brain and type-2 cannabinoid receptors (CB2Rs) in the peripheral immune system. However, recent evidence demonstrates that CB2Rs are also expressed in the brain and implicated in neuropsychiatric effects. Diverse types of cells in various regions in the brain express CB2Rs but the cellular loci of CB2Rs that induce specific behavioral effects have not been determined. To manipulate CB2R expression in specific types of cells in the dorsal hippocampus of adult mice, we used Cre-dependent overexpression and CRISPR-Cas9 genome-editing techniques in combination with adeno-associated viruses and transgenic mice...
November 5, 2017: Neuroscience
https://www.readbyqxmd.com/read/28762647/renal-histology-in-indigenous-australians-with-lupus-nephritis
#4
Farshad Ghazanfari, Zulfikar Jabbar, Johannes Nossent
BACKGROUND: Lupus nephritis (LN) is a feared complication of systemic lupus erythematosus (SLE). Renal biopsy is valuable to assess disease severity and prognosis, but no histological data are available for Indigenous Australians (IA). We compared histopathology between IA and non-IA patients (NI) with LN in northern Australia and describe main outcomes. METHODS: Retrospective cohort study of all patients with biopsy evidence of LN at Royal Darwin Hospital over a 10-year period...
August 1, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28758303/the-periodontal-war-microbes-and-immunity
#5
REVIEW
Jeffrey L Ebersole, Dolph Dawson, Pinar Emecen-Huja, Radhakrishnan Nagarajan, Katherine Howard, Martha E Grady, Katherine Thompson, Rebecca Peyyala, Ahmad Al-Attar, Kathryn Lethbridge, Sreenatha Kirakodu, Octavio A Gonzalez
Maintenance of periodontal health or transition to a periodontal lesion reflects the continuous and ongoing battle between the vast microbial ecology in the oral cavity and the array of resident and emigrating inflammatory/immune cells in the periodontium. This war clearly signifies many 'battlefronts' representing the interface of the mucosal-surface cells with the dynamic biofilms composed of commensal and potential pathogenic species, as well as more recent knowledge demonstrating active invasion of cells and tissues of the periodontium leading to skirmishes in connective tissue, the locality of bone and even in the local vasculature...
October 2017: Periodontology 2000
https://www.readbyqxmd.com/read/28734745/why-are-some-people-who-have-received-overdose-education-and-naloxone-reticent-to-call-emergency-medical-services-in-the-event-of-overdose
#6
Stephen Koester, Shane R Mueller, Lisa Raville, Sig Langegger, Ingrid A Binswanger
BACKGROUND: Overdose Education and Naloxone Distribution (OEND) training for persons who inject drugs (PWID) underlines the importance of summoning emergency medical services (EMS). To encourage PWID to do so, Colorado enacted a Good Samaritan law providing limited immunity from prosecution for possession of a controlled substance and/or drug paraphernalia to the overdose victim and the witnesses who in good faith provide emergency assistance. This paper examines the law's influence by describing OEND trained PWIDs' experience reversing overdoses and their decision about calling for EMS support...
October 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28695558/rehabilitation-in-patients-with-pulmonary-arterial-hypertension
#7
Stephan Keusch, Alexander Turk, Stéphanie Saxer, Nicola Ehlken, Ekkehard Grunig, Silvia Ulrich, On Behalf Of The Swiss Society Of Pulmonary Hypertension
Exertional dyspnoea is a leading symptom in patients with pulmonary arterial hypertension (PAH). Patients suffering from PAH report poor quality of life, have skeletal muscle dysfunction and in the absence of advanced medical therapy deteriorate progressively due to right heart failure which can lead to death. For decades, patients with PAH were advised to avoid exercise in fear of exacerbated right heart failure. Recently, it has been shown that a highly supervised rehabilitation programme in expert centres leads to significant improvements in symptoms, quality of life, exercise capacity and may even enhance haemodynamics in selected stable patients treated with advanced regimens of PAH-targeted drugs...
July 11, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28613923/the-era-of-checkpoint-blockade-in-lung-cancer-taking-the-brakes-off-the-immune-system
#8
Edmund K Moon, Corey J Langer, Steven M Albelda
Despite recent advances with targeted kinase inhibitors and better-tolerated chemotherapy, the treatment of metastatic non-small-cell lung cancer remains suboptimal. One recent advance that holds great promise is immunotherapy-an approach that enhances a patient's immune system to better recognize and react to abnormal cells. The most successful immunotherapeutic strategy to date uses antibodies to block inhibitory receptors (also called "checkpoints") that are up-regulated on the T cells that infiltrate the tumor...
August 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28610824/safety-and-perception-what-are-the-greatest-enemies-of-hpv-vaccination-programmes
#9
Paolo Bonanni, Beatrice Zanella, Francesca Santomauro, Chiara Lorini, Angela Bechini, Sara Boccalini
Vaccines stimulate a person's immune system to produce an adequate reaction against a specific infectious agent; i.e. the person is protected from that disease without having to get it first. As vaccines are administrated to healthy subjects, they are held to the highest standards of safety. Regarding human papillomavirus (HPV) vaccines, at present three prophylactic vaccines are licensed (bivalent HPV 16/18, quadrivalent HPV 6/11/16/18 and the nonovalent HPV 6/11/16/18/31/33/45/52/58 vaccine). Pre- and post-licensure studies (i...
June 10, 2017: Vaccine
https://www.readbyqxmd.com/read/28542611/no-molecular-or-serological-evidence-of-zikavirus-infection-among-healthy-blood-donors-living-in-or-travelling-to-regions-where-aedes-albopictus-circulates
#10
Wegene Borena, Tamara Hofer, Karin Stiasny, Stephan W Aberle, Manfred Gaber, Dorothee von Laer, Harald Schennach
BACKGROUND: Previous studies have shown that Zika virus can infect and be transmitted by A. albopictus. The World Health organization (WHO) has raised concerns of autochthonous transmission of the virus in regions where the vector is endemic. The aim of this pilot study was to assess the occurrence of Zika virus (ZIKV) in western Austria (Tyrol) especially after a history of travel to A. albopictus endemic regions. METHODS: The study participants were healthy blood donors at randomly selected donation sites in the west Austrian region Tyrol...
2017: PloS One
https://www.readbyqxmd.com/read/28438208/amelioration-of-amyloid-%C3%AE-induced-deficits-by-dcr3-in-an-alzheimer-s-disease-model
#11
Yi-Ling Liu, Wei-Ting Chen, Yu-Yi Lin, Po-Hung Lu, Shie-Liang Hsieh, Irene Han-Juo Cheng
BACKGROUND: Microglia mediate amyloid-beta peptide (Aβ)-induced neuroinflammation, which is one of the key events in the pathogenesis of Alzheimer's disease (AD). Decoy receptor 3 (DcR3)/TNFRSF6B is a pleiotropic immunomodulator that promotes macrophage differentiation toward the M2 anti-inflammatory phenotype. Based on its role as an immunosupressor, we examined whether DcR3 could alleviate neuroinflammation and AD-like deficits in the central nervous system. METHOD: We crossed human APP transgenic mice (line J20) with human DcR3 transgenic mice to generate wild-type, APP, DcR3, and APP/DcR3 mice for pathological analysis...
April 24, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28360846/stress-and-the-emerging-roles-of-chromatin-remodeling-in-signal-integration-and-stable-transmission-of-reversible-phenotypes
#12
REVIEW
Ian C G Weaver, Austin C Korgan, Kristen Lee, Ryan V Wheeler, Amos S Hundert, Donna Goguen
The influence of early life experience and degree of parental-infant attachment on emotional development in children and adolescents has been comprehensively studied. Structural and mechanistic insight into the biological foundation and maintenance of mammalian defensive systems (metabolic, immune, nervous and behavioral) is slowly advancing through the emerging field of developmental molecular (epi)genetics. Initial evidence revealed that differential nurture early in life generates stable differences in offspring hypothalamic-pituitary-adrenal (HPA) regulation, in part, through chromatin remodeling and changes in DNA methylation of specific genes expressed in the brain, revealing physical, biochemical and molecular paths for the epidemiological concept of gene-environment interactions...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28357376/gonorrhea-an-evolving-disease-of-the-new-millennium
#13
REVIEW
Stuart A Hill, Thao L Masters, Jenny Wachter
Etiology, transmission and protection: Neisseria gonorrhoeae (the gonococcus) is the etiological agent for the strictly human sexually transmitted disease gonorrhea. Infections lead to limited immunity, therefore individuals can become repeatedly infected. Pathology/symptomatology: Gonorrhea is generally a non-complicated mucosal infection with a pustular discharge. More severe sequellae include salpingitis and pelvic inflammatory disease which may lead to sterility and/or ectopic pregnancy. Occasionally, the organism can disseminate as a bloodstream infection...
September 5, 2016: Microbial Cell
https://www.readbyqxmd.com/read/28336553/tlr2-knockout-protects-against-diabetes-mediated-changes-in-cerebral-perfusion-and-cognitive-deficits
#14
Trevor Hardigan, Caterina Hernandez, Rebecca Ward, M Nasrul Hoda, Adviye Ergul
The risk of cognitive decline in diabetes (Type 1 and Type 2) is significantly greater compared with normoglycemic patients, and the risk of developing dementia in diabetic patients is doubled. The etiology for this is likely multifactorial, but one mechanism that has gained increasing attention is decreased cerebral perfusion as a result of cerebrovascular dysfunction. The innate immune system has been shown to play a role in diabetic vascular complications, notably through the Toll-like receptor (TLR)-stimulated release of proinflammatory cytokines and chemokines that lead to vascular damage...
June 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28302434/evaluation-of-low-immunization-coverage-among-the-amish-population-in-rural-ohio
#15
Christine Kettunen, John Nemecek, Olivia Wenger
BACKGROUND: The Centers for Disease Control and Prevention's Morbidity and Mortality Weekly Review included childhood immunizations among the 10 great public health achievements in the United States in the 20th century. Despite this acknowledged success, childhood immunization rates continue to be much lower in select populations. Amish communities have persistently lower immunization rates. Recent outbreaks in Amish communities include a 2014 measles outbreak in Ohio, resulting in 368 cases reported...
March 13, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28300971/culture-versus-the-law-in-the-decision-not-to-vaccinate-children-meanings-assigned-by-middle-class-couples-in-s%C3%A3-o-paulo-brazil
#16
Carolina Luisa Alves Barbieri, Márcia Thereza Couto, Fernando Mussa Abujamra Aith
This study aimed to learn how middle-class parents in the city of São Paulo, Brazil, interpreted the country's prevailing vaccination requirements, based on their experiences with vaccinating, selectively vaccinating, or not vaccinating their children. A qualitative approach was used with in-depth interviews. The analytical process was guided by content analysis and the theoretical framework of the anthropology of the law and morality. For parents that vaccinated, Brazil's culture of immunization outweighed the feeling of compliance with the law; for selective parents, selection of vaccines was not perceived as deviating from the law...
March 9, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28293422/regional-disparities-in-immunization-services-in-ghana-through-a-bottleneck-analysis-approach-implications-for-sustaining-national-gains-in-immunization
#17
A E Yawson, G Bonsu, L K Senaya, A O Yawson, J B Eleeza, J K Awoonor-Williams, H K Banskota, E E A Agongo
BACKGROUND: Immunization is considered one of the most cost effective public health interventions for reducing child morbidity, mortality and disability. The aim of this work is to describe the application of the Bottleneck analysis (BNA) process to assess gaps in immunization services in Ghana and implications for sustaining the gains in Immunization coverage. METHODS: A national assessment was conducted in May 2015, through use of desk reviews, field visits and key informant interviews...
2017: Archives of Public Health, Archives Belges de Santé Publique
https://www.readbyqxmd.com/read/28270757/effectiveness-of-a-novel-qigong-meditative-movement-practice-for-impaired-health-in-flight-attendants-exposed-to-second-hand-cigarette-smoke
#18
Peter Payne, Steven Fiering, James C Leiter, David T Zava, Mardi A Crane-Godreau
This single-arm non-randomized pilot study explores an intervention to improve the health of flight attendants (FA) exposed to second-hand cigarette smoke prior to the smoking ban on commercial airlines. This group exhibits an unusual pattern of long-term pulmonary dysfunction. We report on Phase I of a two-phase clinical trial; the second Phase will be a randomized controlled trial testing digital delivery of the intervention. Subjects were recruited in the Northeastern US; testing and intervention were administered in 4 major cities...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28165878/vaccinations-in-migrants-and-refugees-a-challenge-for-european-health-systems-a-systematic-review-of-current-scientific-evidence
#19
REVIEW
Daniele Mipatrini, Paola Stefanelli, Santino Severoni, Giovanni Rezza
The decline of immunization rates in countries of origin of migrants and refugees, along with risky conditions during the journey to Europe, may threaten migrants' health. We performed a systematic review of the scientific literature in order to assess the frequency of vaccine preventable diseases, and vaccination coverage among migrants and refugees in Europe. To this end, Medline and Cochrane databases were considered. After the screening and the selection process, 58 papers were included in the review. We focused on the following vaccine-preventable diseases: hepatitis B, measles, rubella, mumps, tetanus, poliomyelitis, pertussis, diphtheria, meningitis, and varicella...
March 2017: Pathogens and Global Health
https://www.readbyqxmd.com/read/28068397/burn-injury-leads-to-increased-long-term-susceptibility-to-respiratory-infection-in-both-mouse-models-and-population-studies
#20
Vanessa S Fear, James H Boyd, Suzanne Rea, Fiona M Wood, Janine M Duke, Mark W Fear
BACKGROUND: Burn injury initiates an acute inflammatory response that subsequently drives wound repair. However, acute disruption to the immune response is also common, leading to susceptibility to sepsis and increased morbidity and mortality. Despite increased understanding of the impact of burn injury on the immune system in the acute phase, little is known about long-term consequences of burn injury on immune function. This study was established to determine whether burn injury has long-term clinical impacts on patients' immune responses...
2017: PloS One
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