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Immune metabolism

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https://www.readbyqxmd.com/read/29238351/natural-killer-cell-activity-and-interleukin-12-in-metabolically-healthy-versus-metabolically-unhealthy-overweight-individuals
#1
Minjoo Kim, Minkyung Kim, Hye Jin Yoo, Jong Ho Lee
The purpose of this study was to determine whether the immune system is involved in the different metabolic circumstances in healthy and unhealthy overweight individuals. We examined the metabolic and immune characteristics of 117 overweight individuals. Subjects were classified as metabolically healthy overweight (MHO, n = 72) or metabolically unhealthy overweight (MUO, n = 45). The immune response was measured by circulating levels of natural killer (NK) cell activity and cytokines. Both groups were comparable with regards to age, sex distribution, smoking and drinking status, and body mass index...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29238329/relative-quantitative-proteomic-analysis-of-brucella-abortus-reveals-metabolic-adaptation-to-multiple-environmental-stresses
#2
Xiaodong Zai, Qiaoling Yang, Ying Yin, Ruihua Li, Mengying Qian, Taoran Zhao, Yaohui Li, Jun Zhang, Ling Fu, Junjie Xu, Wei Chen
Brucella spp. are facultative intracellular pathogens that cause chronic brucellosis in humans and animals. The virulence of Brucella primarily depends on its successful survival and replication in host cells. During invasion of the host tissue, Brucella is simultaneously subjected to a variety of harsh conditions, including nutrient limitation, low pH, antimicrobial defenses, and extreme levels of reactive oxygen species (ROS) via the host immune response. This suggests that Brucella may be able to regulate its metabolic adaptation in response to the distinct stresses encountered during its intracellular infection of the host...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29238018/-regulation-of-bone-by-il-17-producing-t-cells
#3
Kazuo Okamoto
  Bone is a component of the skeletal-locomotor system but also functions as an immunological organ that harbors hematopoietic stem and progenitor cells. Since the immune and skeletal systems are closely related through a number of shared regulatory molecules including cytokines and receptors, bone can be affected in various immune disorders. Rheumatoid arthritis is a typical disease in which the immune system affects the bone metabolism. The enhanced activity of osteoclasts by the activation of Th17 cells causes the joint destruction in rheumatoid arthritis...
2017: Nihon Rinshō Men'eki Gakkai Kaishi, Japanese Journal of Clinical Immunology
https://www.readbyqxmd.com/read/29237843/human-parvovirus-b19-utilizes-cellular-dna-replication-machinery-for-viral-dna-replication
#4
Wei Zou, Zekun Wang, Min Xiong, Aaron Yun Chen, Peng Xu, Safder S Ganaie, Yomna Badawi, Steve Kleiboeker, Hiroshi Nishimune, Shui Qing Ye, Jianming Qiu
Human parvovirus B19 (B19V) infection of human erythroid progenitor cells (EPCs) induces a DNA damage response and cell cycle arrest at late S phase, which facilitates viral DNA replication. However, it is not clear exactly which cellular factors are employed by this single-stranded DNA virus. Here, we used microarrays to systematically analyze the dynamic transcriptome of EPCs infected with B19V. We found that DNA metabolism, DNA replication, DNA repair, DNA damage response, cell cycle, and cell cycle arrest pathways were significantly regulated after B19V infection...
December 13, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29237779/estrogen-receptor-%C3%AE-signaling-exacerbates-immune-mediated-nephropathies-through-alteration-of-metabolic-activity
#5
Chelsea Corradetti, Neelakshi R Jog, Matteo Cesaroni, Michael Madaio, Roberto Caricchio
Glomerulonephritis is one of the most serious manifestations of systemic lupus erythematous (SLE). Because SLE is ≥10 times more common in women, a role for estrogens in disease pathogenesis has long been suspected. Estrogen receptor α (ERα) is highly expressed in renal tissue. We asked whether ERα expression contributes to the development of immune-mediated nephropathies like in lupus nephritis. We tested the overall effects of estrogen receptors on the immune response by immunization with OVA and induction of chronic graft-versus-host disease in female ERα-knockout mice...
December 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29237479/birth-delivery-method-affects-expression-of-immune-genes-in-lung-and-jejunum-tissue-of-neonatal-beef-calves
#6
Carla Surlis, Keelan McNamara, Eoin O'Hara, Sinead Waters, Marijke Beltman, Joseph Cassidy, David Kenny
BACKGROUND: Caesarean section is a routine veterinary obstetrical procedure employed to alleviate dystocia in cattle. However, CS, particularly before the onset of labour, is known to negatively affect neonatal respiration and metabolic adaptation in humans, though there is little published information for cattle. The aim of this study was to investigate the effect of elective caesarean section (ECS) or normal trans-vaginal (TV) delivery, on lung and jejunal gene expression profiles of neonatal calves...
December 14, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29236714/non-invasive-identification-of-protein-biomarkers-for-early-pregnancy-diagnosis-in-the-cheetah-acinonyx-jubatus
#7
Diana C Koester, David E Wildt, Morgan Maly, Pierre Comizzoli, Adrienne E Crosier
Approximately 80% of cheetahs living in typical zoological collections never reproduce. In more than 60% of breedings, the female is confirmed to ovulate, but parturition fails to occur. It is unknown if these non-pregnant intervals of elevated progesterone (deemed luteal phases) are conception failures or a pregnancy terminating in embryonic/fetal loss. There have been recent advances in metabolic profiling and proteome analyses in many species with mass spectrometry used to identify 'biomarkers' and mechanisms indicative of specific physiological states (including pregnancy)...
2017: PloS One
https://www.readbyqxmd.com/read/29236358/in-vivo-imaging-the-motility-of-monocyte-macrophage-during-inflammation-in-diabetic-mice
#8
Rui Shi, Wei Feng, Chao Zhang, Tingting Yu, Zhan Fan, Zheng Liu, Zhihong Zhang, Dan Zhu
Diabetes, as a chronic metabolic disease, can impair the immune function of monocytes/macrophages (MMs). However, it is unclear how MMs immune response to inflammation with the development of diabetes, and whether immune response around the inflammatory foci depends on the depth in tissue. Footpad provides a classical physiological site for monitoring cellular behavior during inflammation, but limited to the superficial dermis due to the strong scattering of footpad. Herein, we used confocal microscopy to monitor the motility of MMs in deeper tissue around inflammatory foci with the development of type 1 diabetic (T1D) mice through a swithable footpad skin optical clearing window...
December 13, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/29236298/leptin-a-new-therapeutic-target-for-treatment-of-diabetes-mellitus
#9
Kanwal Rehman, Muhammad Sajid Hamid Akash, Zunaira Alina
Leptin is an endogenous protein having 167 amino acids and is derived from adipocytes. It hass tertiary structure that resembles with that of the pro-inflammatory cytokines family. The fundamental role of leptin is to maintain the energy homeostasis with the aid of its counter hormone called ghrelin, known as the "hunger hormone". Small quantities of leptin are also present in various tissues like ovary, placenta, pituitary gland, mammary gland, skeletal muscle, stomach and lymphoid tissue. Expression of leptin is strongly associated with various inflammatory responses and immune system, and plays crucial role in the pathophysiology of obesity and development of diabetes mellitus (DM) and insulin resistance...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29235464/syk-kinase-mediates-brown-fat-differentiation-and-activation
#10
Marko Knoll, Sally Winther, Anirudh Natarajan, Huan Yang, Mengxi Jiang, Prathapan Thiru, Aliakbar Shahsafaei, Tony E Chavarria, Dudley W Lamming, Lei Sun, Jacob B Hansen, Harvey F Lodish
Brown adipose tissue (BAT) metabolism influences glucose homeostasis and metabolic health in mice and humans. Sympathetic stimulation of β-adrenergic receptors in response to cold induces proliferation, differentiation, and UCP1 expression in pre-adipocytes and mature brown adipocytes. Here we show that spleen tyrosine kinase (SYK) is upregulated during brown adipocyte differentiation and activated by β-adrenergic stimulation. Deletion or inhibition of SYK, a kinase known for its essential roles in the immune system, blocks brown and white pre-adipocyte proliferation and differentiation in vitro, and results in diminished expression of Ucp1 and other genes regulating brown adipocyte function in response to β-adrenergic stimulation...
December 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29234933/micrornas-and-metastasis-small-rnas-play-big-roles
#11
Jongchan Kim, Fan Yao, Zhenna Xiao, Yutong Sun, Li Ma
MicroRNAs (miRNAs) are small non-coding RNAs regulating post-transcriptional gene expression. They play important roles in many biological processes under physiological or pathological conditions, including development, metabolism, tumorigenesis, metastasis, and immune response. Over the past 15 years, significant insights have been gained into the roles of miRNAs in cancer. Depending on the cancer type, miRNAs can act as oncogenes, tumor suppressors, or metastasis regulators. In this review, we focus on the role of miRNAs as components of molecular networks regulating metastasis...
December 12, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/29234908/characterization-of-type-iv-antifreeze-gene-in-nile-tilapia-oreochromis-niloticus-and-influence-of-cold-and-hot-weather-on-its-expression-and-some-immune-related-genes
#12
Asmma Y Ammar, Abeer F El Nahas, Shawky Mahmoud, Mohamed E Barakat, Asmaa M Hassan
The aim of this work is to study the effect of the thermal stress of ambient temperature during winter and summer on the expression of type IV antifreeze gene (ANF IV) in different tissues of Nile tilapia (Oreochromis niloticus) as well as some immune-related genes. At first, genomic ANF IV gene was characterized from one fish; 124 amino acids were identified with 92.7% similarity with that on the gene bank. Expression of ANF IV and immune-related genes were done twice, once at the end of December (winter sample, temperature 14 °C) and the other at August (summer sample, temperature 36 °C)...
December 12, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29234668/a-genome-wide-screen-for-fty720-sensitive-mutants-reveals-genes-required-for-ros-homeostasis
#13
Kanako Hagihara, Kanako Kinoshita, Kouki Ishida, Shihomi Hojo, Yoshinori Kameoka, Ryosuke Satoh, Teruaki Takasaki, Reiko Sugiura
Fingolimod hydrochloride (FTY720), a sphingosine-1-phosphate (S1P) analogue, is an approved immune modulator for the treatment of multiple sclerosis (MS). Notably, in addition to its well-known mode of action as an S1P modulator, accumulating evidence suggests that FTY720 induces apoptosis in various cancer cells via reactive oxygen species (ROS) generation. Although the involvement of multiple signaling molecules, such as JNK (Jun N-terminal kinase), Akt (alpha serine/threonine-protein kinase) and Sphk has been reported, the exact mechanisms how FTY720 induces cell growth inhibition and the functional relationship between FTY720 and these signaling pathways remain elusive...
November 27, 2017: Microbial Cell
https://www.readbyqxmd.com/read/29234285/a-microarray-study-of-carpet-shell-clam-ruditapes-decussatus-shows-common-and-organ-specific-growth-related-gene-expression-differences-in-gills-and-digestive-gland
#14
Carlos Saavedra, Massimo Milan, Ricardo B Leite, David Cordero, Tomaso Patarnello, M Leonor Cancela, Luca Bargelloni
Growth rate is one of the most important traits from the point of view of individual fitness and commercial production in mollusks, but its molecular and physiological basis is poorly known. We have studied differential gene expression related to differences in growth rate in adult individuals of the commercial marine clam Ruditapes decussatus. Gene expression in the gills and the digestive gland was analyzed in 5 fast-growing and five slow-growing animals by means of an oligonucleotide microarray containing 14,003 probes...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29233875/to-be-or-not-to-be-cell-autonomous-autophagy-says-both
#15
REVIEW
Nina Fenouille, Anna Chiara Nascimbeni, Joëlle Botti-Millet, Nicolas Dupont, Etienne Morel, Patrice Codogno
Although cells are a part of the whole organism, classical dogma emphasizes that individual cells function autonomously. Many physiological and pathological conditions, including cancer, and metabolic and neurodegenerative diseases, have been considered mechanistically as cell-autonomous pathologies, meaning those that damage or defect within a selective population of affected cells suffice to produce disease. It is becoming clear, however, that cells and cellular processes cannot be considered in isolation...
December 12, 2017: Essays in Biochemistry
https://www.readbyqxmd.com/read/29233860/pathway-analysis-of-transcriptomic-data-shows-immunometabolic-effects-of-vitamin-d
#16
Amadeo Muñoz Garcia, Martina Kutmon, Lars Eijssen, Martin Hewison, Chris T Evelo, Susan L Coort
Unbiased genomic screening analyses have highlighted novel immunomodulatory properties of the active form of vitamin D, 1,25-dihydroxyvitamin D (1,25(OH)2D). However, clearer interpretation of the resulting gene expression data is limited by cell model specificity. The aim of the current study was to provide a broader perspective on common gene regulatory pathways associated with innate immune responses to 1,25(OH)2D, through systematic re-interrogation of existing gene expression databases from multiple related monocyte models (the THP-1 monocytic cell line (THP-1), monocyte-derived dendritic cells (DCs), and monocytes)...
December 12, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/29232663/serum-leptin-resistin-and-adiponectin-concentrations-in-psoriasis-a-meta-analysis-of-observational-studies
#17
Aikaterini Kyriakou, Aikaterini Patsatsi, Dimitrios Sotiriadis, Dimitrios G Goulis
BACKGROUND: Psoriasis is an immune-mediated, inflammatory disease. Adipokines contribute to the regulation of immune-mediated processes and inflammation. OBJECTIVE: The aim of our study was to systematically review the literature for studies that have evaluated the circulating concentrations of adipokines in patients with psoriasis and controls and to meta-analyze the best evidence available. METHODS: Eligible were studies that have assessed leptin, resistin, or adiponectin concentrations in psoriatic patients and a reference group...
December 13, 2017: Dermatology: International Journal for Clinical and Investigative Dermatology
https://www.readbyqxmd.com/read/29232411/rev-erb-agonist-improves-adverse-cardiac-remodeling-and-survival-in-myocardial-infarction-through-an-anti-inflammatory-mechanism
#18
Endin Nokik Stujanna, Nobuyuki Murakoshi, Kazuko Tajiri, DongZhu Xu, Taizo Kimura, Rujie Qin, Duo Feng, Saori Yonebayashi, Yukino Ogura, Fumi Yamagami, Akira Sato, Akihiko Nogami, Kazutaka Aonuma
Rev-erb α, known as nuclear receptor 1D1 (NR1D1), regulates circadian rhythm, modulates glucose and lipid metabolism, and inflammatory response. However, little is known about the effect of Rev-erb agonist on the progression of myocardial infarction (MI) and heart failure. To investigate it, wild-type male mice underwent sham-operation or permanent ligation of the left anterior descending coronary artery to create MI model. Rev-erb agonist SR9009 (100 mg/kg/day) or vehicle was intraperitoneally administered...
2017: PloS One
https://www.readbyqxmd.com/read/29232311/lithium-colchicine-a-potential-strategy-to-reduce-pro-inflammatory-effects-of-lithium-treatment
#19
John J Mooney, Roscoe O Brady
PURPOSE: Rosenblat and McIntyre (Acta Psychiatr Scand. 2015;132: 180-191) propose that immune disorders are important mediators between bipolar disorders and medical comorbidities. Rosenblat et al (Bipolar Disord. 2016;18:89-101) present a meta-analysis showing that adjunctive anti-inflammatory agents could evoke moderate antidepressant responses in bipolar disorders. We propose using the anti-inflammatory drug colchicine to improve the long-term safety and efficacy of lithium treatment for bipolar disorders...
December 11, 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/29231753/rates-of-insufficiency-and-deficiency-of-vitamin-d-levels-in-elite-professional-male-and-female-skiers-a-chronobiologic-approach
#20
Jacopo Antonino Vitale, Giovanni Lombardi, Luca Cavaleri, Rosa Graziani, Herbert Schoenhuber, Antonio La Torre, Giuseppe Banfi
Vitamin D is essential for the maintenance and promotion of musculoskeletal health, for the functioning of the immune, cardiovascular and reproductive systems, and its main action is to keep calcium and phosphate plasmatic physiological concentrations at intestinal, renal and bony level. Vitamin D affects several parameters related to physical performance too and a particularly high percentage of vitamin D insufficiency and deficiency in professional athletes has been observed. Several variables are able to impair the synthesis of 25(OH)D in athletes, specifically both genetic and environmental factors, but the most probable explanation for the deficient/insufficient vitamin D levels is the insufficient ultraviolet B light (UVB) exposure during winter...
December 12, 2017: Chronobiology International
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