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https://www.readbyqxmd.com/read/28719212/proteochemometrics-based-prediction-of-peptide-binding-to-hla-dp-proteins
#1
Ventsislav Yordanov, Ivan Dimitrov, Irini Doytchinova
Human leukocyte antigens (HLA) class II proteins are involved in the antigen processing in the antigen presenting cells. They form complexes with antigen peptide fragments. The peptide-HLA protein complexes are presented on the cell surface where they are recognized by helper T cells (Th cells). HLA-DP is one of the three HLA class II loci. The HLA-DP proteins are associated with a significant number of autoimmune diseases, as well as with a susceptibility or resistance to a number of infectious agents. In the present study, we apply proteochemometrics - a method for bioactivity modeling of multiple ligands binding to multiple target proteins - to derive and validate a robust model for peptide binding prediction to 7 most frequent HLA-DP proteins...
July 18, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28717319/changes-in-histopathology-and-cytokeratin-ae1-ae3-expression-in-skin-graft-with-different-time-on-indonesian-local-cats
#2
Erwin, Etriwati, Gunanti, Ekowati Handharyani, Deni Noviana
AIM: A good skin graft histopathology is followed by formation of hair follicle, sweat gland, sebaceous gland, blood vessel, lightly dense connective tissue, epidermis, and dermis layer. This research aimed to observe histopathology feature and cytokeratin AE1/AE3 expression on cat skin post skin grafting within a different period of time. MATERIALS AND METHODS: Nine male Indonesian local cats aged 1-2 years old weighing 3-4 kg were separated into three groups. First surgery created defect wound of 2 cm × 2 cm in size to whole groups...
June 2017: Veterinary World
https://www.readbyqxmd.com/read/28716804/type-i-interferon-is-required-for-t-helper-th-2-induction-by-dendritic-cells
#3
Lauren M Webb, Rachel J Lundie, Jessica G Borger, Sheila L Brown, Lisa M Connor, Adam Nr Cartwright, Annette M Dougall, Ruud Hp Wilbers, Peter C Cook, Lucy H Jackson-Jones, Alexander T Phythian-Adams, Cecilia Johansson, Daniel M Davis, Benjamin G Dewals, Franca Ronchese, Andrew S MacDonald
Type 2 inflammation is a defining feature of infection with parasitic worms (helminths), as well as being responsible for widespread suffering in allergies. However, the precise mechanisms involved in T helper (Th) 2 polarization by dendritic cells (DCs) are currently unclear. We have identified a previously unrecognized role for type I IFN (IFN-I) in enabling this process. An IFN-I signature was evident in DCs responding to the helminth Schistosoma mansoni or the allergen house dust mite (HDM). Further, IFN-I signaling was required for optimal DC phenotypic activation in response to helminth antigen (Ag), and efficient migration to, and localization with, T cells in the draining lymph node (dLN)...
July 17, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28713999/elevated-fibrinogen%C3%A2-like-protein-2-in-tnbs%C3%A2-induced-colitis-mice-association-with-th17-and-regulatory-t-cells
#4
Haihua Lin, Renpin Chen, Xuepei Jiang, Xiaoli Wu, Xielin Huang, Xiuli Dong, Xu Yang, Xiuqing Lin, Xin Chen, Xiangrong Chen, Zhiming Huang
The etiology and pathogenesis of inflammatory bowel disease (IBD) is complex and remains to be completely elucidated. Numerous cytokines are associated with the initiation and development of IBD. Fibrinogen‑like protein 2 (FGL2), an immunosuppressive cytokine expressed by regulatory cluster of differentiation (CD)4+ T (Treg) cells, has been identified to be important for immunomodulatory activity in the inflammatory state. Therefore, the present study investigated the expression of FGL2 and interleukin (IL)‑17 in trinitro‑benzene‑sulfonic acid (TNBS)‑induced colitis mice to identify the function of FGL2, based on the effector CD4+ T helper (Th)17/Treg balance, in IBD...
July 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713973/a-dichloromethane-fraction-of-triticum-aestivum-sprouts-reduces-allergic-immune-response-through-inhibiting-th2-differentiation-in-ovalbumin%C3%A2-immunized-mice
#5
Hyeon-Hui Ki, Sung-Woo Hwang, Ji-Hyun Lee, Young-Ho Kim, Dae-Ki Kim, Young-Mi Lee
Triticum aestivum sprouts are small shoots that germinate from seeds and are consumed as a dietary supplement. The present study aimed to determine whether a dichloromethane fraction isolated from Triticum aestivum sprouts (TDF) suppressed the allergic immune response in ovalbumin (OVA)‑sensitized mice. In vivo experiments were performed by administering TDF or vehicle to mice during the sensitization and this was immediately followed by an intradermal injection of OVA into the ears. Splenocytes isolated from OVA‑sensitized mice were pre‑treated with TDF and re‑challenged with OVA for ex vivo evaluation...
July 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713936/epigallocatechin-gallate-attenuates-overload%C3%A2-induced-cardiac-ecm-remodeling-via-restoring-t-cell-homeostasis
#6
Yongsheng Han, Qingtong Wang, Xizhen Fan, Jun Chu, Junfu Peng, Yousheng Zhu, Yan Li, Xiaojing Li, Lei Shen, James Asenso, Shanfeng Li
It has previously been demonstrated that Epigallocatechin gallate (EGCG) has regulatory effects on cellular immunity. The present study explored whether EGCG inhibits the overload‑induced cardiac extracellular matrix (ECM) remodeling through targeting the balance of T cell subpopulations. Sprague‑Dawley rats were subjected to either transverse aortic constriction (TAC) or sham operation. TAC rats were treated with EGCG or valsartan (Val) for 6 weeks. The administration of EGCG or Val ameliorated the overproduction of cardiac collagen, inhibited matrix metalloproteinase (MMP) activity, decreased the expression of tissue inhibitor of MMP‑2, atrial natriuretic peptide and brain natriuretic peptide...
July 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713741/reconstruction-of-drug-induced-cleft-palate-using-bone-marrow-mesenchymal-stem-cell-in-rodents
#7
Julie Christy Amalraj, Manasa Gangothri, Hari Babu
BACKGROUND: Triamcinolone acetonide (TAC) (Kenacort*) is a commonly used synthetic glucocorticoid in today's medical practice. The drug is also a potential agent in inducing cleft palates in rats. This drug has been used to induce cleft palate in the fetus of the pregnant rats to bring out a suitable animal model for human cleft lip and palate. The drug was given intraperitoneally to induce congenital cleft palate in pregnant mother rats. AIM: The aim of this study is to induce congenital cleft palate in pregnant Wister albino rats and reconstruct the defect with bone marrow mesenchymal stem cells (BMSCs) isolated from the same species along with PLGA (poly lactic co glycolic acid) scaffold...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713531/the-effects-of-fasting-during-ramadan-on-the-concentration-of-serotonin-dopamine-brain-derived-neurotrophic-factor-and-nerve-growth-factor
#8
Abdolhossein Bastani, Sadegh Rajabi, Fatemeh Kianimarkani
Neurotransmitters and neurotrophic factors are signaling molecules that play a crucial role in cell proliferation, differentiation, survival and functions of neurons. It is believed that caloric restriction could help the health of the nervous system by affecting the synthesis of neurotrophins and neurotransmitter and oxygen radical metabolism. The objective was to investigate the plasma levels of serotonin, dopamine, brain-derived neurotrophic factor (BDNF), and nerve growth factor (NGF) in 29 healthy fasted subjects (22 women and 7 men) during the month of fasting in Ramadan...
June 23, 2017: Neurology International
https://www.readbyqxmd.com/read/28713483/the-treadmill-exercise-protects-against-dopaminergic-neuron-loss-and-brain-oxidative-stress-in-parkinsonian-rats
#9
Roberta Oliveira da Costa, Carlos Vinicius Jataí Gadelha-Filho, Ayane Edwiges Moura da Costa, Mariana Lima Feitosa, Dayane Pessoa de Araújo, Jalles Dantas de Lucena, Pedro Everson Alexandre de Aquino, Francisco Arnaldo Viana Lima, Kelly Rose Tavares Neves, Glauce Socorro de Barros Viana
Parkinson's disease (PD), a progressive neurological pathology, presents motor and nonmotor impairments. The objectives were to support data on exercise benefits to PD. Male Wistar rats were distributed into sham-operated (SO) and 6-OHDA-lesioned, both groups without and with exercise. The animals were subjected to treadmill exercises (14 days), 24 h after the stereotaxic surgery and striatal 6-OHDA injection. Those from no-exercise groups stayed on the treadmill for the same period and, afterwards, were subjected to behavioral tests and euthanized for neurochemical and immunohistochemical assays...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28711564/role-of-estrogen-and-levodopa-in-1-methyl-4-pheny-l-1-2-3-6-tetrahydropyridine-mptp-induced-cognitive-deficit-in-parkinsonian-ovariectomized-mice-model-a-comparative-study
#10
Satyndra Kumar Yadav, Shivani Pandey, Babita Singh
Parkinson's disease (PD) is one of the most common neurodegenerative disease found in the aging population. Currently, many studies are being conducted to find a suitable and effective cure for PD, with an emphasis on the use of herbal plants. In this study, the neuroprotective effects of estrogen was evaluated in the 1-methyl-4-phe-nyl-1,2,3,6-tetrahydropyridine (MPTP) model of PD with cognitive deficit and compared to Levodopa (LD), a well reported neuroprotective agent used for treating PD. Twenty-four Swiss albino mice were randomly divided into four groups: Control, MPTP, MPTP+LD and MPTP+estrogen...
July 12, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28710773/reciprocal-modulation-of-helper-th1-and-th17-cells-by-the-%C3%AE-2-adrenergic-receptor-agonist-drug-terbutaline
#11
Catalina M Carvajal Gonczi, Mahdieh Tabatabaei Shafiei, Ashley East, Erika Martire, Meagane H I Maurice-Ventouris, Peter J Darlington
Catecholamine hormones are powerful regulators of the immune system produced by the sympathetic nervous system. They regulate the adaptive immune system by altering T cell differentiation into T helper (Th) 1 and Th2 cell subsets, but the effect on Th17 cells is not known. Th17 cells, defined in part by chemokine receptor CCR6 and cytokine IL-17A, are crucial for mediating certain pathogen-specific responses, and are linked with several autoimmune diseases. We demonstrated that a proportion of human Th17 cells express β2-adrenergic receptor, a G protein coupled receptor that responds to catecholamines...
July 15, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28706969/quantitative-analysis-of-immune-cell-subset-infiltration-of-supraspinatus-muscle-after-severe-rotator-cuff-injury
#12
J R Krieger, L E Tellier, M T Ollukaren, J S Temenoff, E A Botchwey
Rotator cuff tears cause muscle degeneration that is characterized by myofiber atrophy, fatty infiltration, and fibrosis and is minimally responsive to current treatment options. The underlying pathogenesis of rotator cuff muscle degeneration remains to be elucidated, and increasing evidence implicates immune cell infiltration as a significant factor. Because immune cells are comprised of highly heterogeneous subpopulations that exert divergent effects on injured tissue, understanding trafficking and accumulation of immune subpopulations may hold the key to more effective therapies...
June 2017: Regenerative Engineering and Translational Medicine
https://www.readbyqxmd.com/read/28704566/development-and-characterization-of-a-human-three-dimensional-chondrosarcoma-culture-for-in-vitro-drug-testing
#13
Aurélien Voissiere, Elodie Jouberton, Elise Maubert, Françoise Degoul, Caroline Peyrode, Jean-Michel Chezal, Élisabeth Miot-Noirault
It has been suggested that chemoresistance of chondrosarcoma (CHS), the cartilage tumor, is caused by the phenotypic microenvironmental features of the tumor tissue, mainly the chondrogenic extracellular matrix (ECM), and hypoxia. We developed and characterized a multicellular tumor spheroid (MCTS) of human chondrosarcoma HEMC-SS cells to gain insight into tumor cell biology and drug response. At Day 7, HEMC-SS spheroids exhibited a homogeneous distribution of proliferative Ki-67 positive cells, whereas in larger spheroids (Day 14 and Day 20), proliferation was mainly localized in the periphery...
2017: PloS One
https://www.readbyqxmd.com/read/28703115/incidental-diagnosis-of-the-tall-cell-variant-of-the-papillary-microcarcinoma-of-the-thyroid-gland-requires-completion-lymphadenectomy-case-report
#14
I Bartella, F Meyer, K Frauenschläger, K Reschke, Th Wallbaum, B Buth, C Bruns, C Chiapponi
Papillary thyroid carcinoma is the most common neoplasm of the thyroid gland which is usually associated with a very good prognosis. The aim of this case report is to present the disease course of a rare tumor of the thyroid gland, which is worthwhile due to its extraordinary appearance and specific management. A 46-year-old patient presented with a pronounced right-sided, but bilateral, multinodular goiter, with a volume of approximately 80 mL, as assessed on ultrasonography. Surgical removal was indicated as scintigraphy showed a 4-cm cold nodule that almost completely took up the right thyroid lobe...
June 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28702462/adoptive-cell-therapy-of-induced-regulatory-t-cells-expanded-by-tolerogenic-dendritic-cells-on-murine-autoimmune-arthritis
#15
Jie Yang, Lidong Liu, Yiming Yang, Ning Kong, Xueyu Jiang, Juan Sun, Rufeng Xie
OBJECTIVE: Tolerogenic dendritic cells (tDCs) can expand TGF-β-induced regulatory T cells (iTregs); however, the therapeutic utility of these expanded iTregs in autoimmune diseases remains unknown. We sought to determine the properties of iTregs expanded by mature tolerogenic dendritic cells (iTregmtDC) in vitro and explore their potential to ameliorate collagen-induced arthritis (CIA) in a mouse model. METHODS: After induction by TGF-β and expansion by mature tDCs (mtDCs), the phenotype and proliferation of iTregmtDC were assessed by flow cytometry...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28701322/functional-and-neurochemical-characterization-of-angiotensin-type-1a-receptor-expressing-neurons-in-the-nucleus-of-the-solitary-tract-of-the-mouse
#16
David A Carter, Yan-Ting Choong, Angela A Connelly, Jaspreet K Bassi, Nicole O Hunter, Nattaya Thongsepee, Ida J Llewellyn-Smith, Angelina Y Fong, Stuart James McDougall, Andrew Mark Allen
Angiotensin II acts via two main receptors within the CNS, with the type 1A receptor (AT1AR) most widely expressed in adult neurons. Activation of the AT1R in the nucleus of the solitary tract (NTS), the principal nucleus receiving central synapses of viscerosensory afferents, modulates cardiovascular reflexes. Expression of the AT1R occurs in high density within the NTS of most mammals, including humans, but the fundamental electrophysiological and neurochemical characteristics of the AT1AR-expressing NTS neurons are not known...
July 12, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28698517/the-plasticity-of-th17-cells-in-the-pathogenesis-of-rheumatoid-arthritis
#17
REVIEW
Shigeru Kotake, Toru Yago, Tsuyoshi Kobashigawa, Yuki Nanke
Helper T (Th) cells play an important role in the pathogenesis of autoimmune diseases, including rheumatoid arthritis (RA). It has been revealed that Th17 cells can shift to Th1 cells (i.e., "nonclassic Th1 cells"), which are reported to be more pathogenic than Th17 cells per se. Thus, the association of Th cells in the pathogenesis of autoimmune disease has become more complicated. We recently reported using peripheral blood from untreated and early-onset RA patients that the ratio of CD161+Th1 cells (i.e...
July 10, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28698262/thyroid-hormone-coordinates-pancreatic-islet-maturation-during-the-zebrafish-larval-to-juvenile-transition-to-maintain-glucose-homeostasis
#18
Hiroki Matsuda, Sri Teja Mullapudi, Yuxi Zhang, Daniel Hesselson, Didier Y R Stainier
Thyroid hormone (TH) signaling promotes tissue maturation and adult organ formation. Developmental transitions alter an organism's metabolic requirements, and it remains unclear how development and metabolic demands are coordinated. We used the zebrafish as a model to test whether and how TH signaling affects pancreatic islet maturation, and consequently glucose homeostasis, during the larval to juvenile transition. We found that exogenous TH precociously activates the β cell differentiation genes pax6b and mnx1, while downregulating arxa, a master regulator of α cell development and function...
July 11, 2017: Diabetes
https://www.readbyqxmd.com/read/28697461/direct-induction-of-functional-neuronal-cells-from-fibroblast-like-cells-derived-from-adult-human-retina
#19
Lili Hao, Zhen Xu, Hui Sun, Wu Luo, Youchen Yan, Jing Wang, Jingyi Guo, Yizhi Liu, Shuyi Chen
Obtaining and manipulating neuronal cells are critical for neural biology basic mechanism studies and translational applications. Recent advances in protocol development and mechanism dissections have made direct induction of neuronal cells from other somatic cells (iN) a promising strategy for such purposes. In this study, we established a protocol to expand a population of fibroblast-like cells from adult human retinal tissues, which can be reprogrammed into iNs by forced expression of neurogenic transcription factors...
June 29, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28696253/the-ox40-ox40-ligand-pathway-promotes-pathogenic-th-cell-responses-plasmablast-accumulation-and-lupus-nephritis-in-nzb-w-f1-mice
#20
Jonathan Sitrin, Eric Suto, Arthur Wuster, Jeffrey Eastham-Anderson, Jeong M Kim, Cary D Austin, Wyne P Lee, Timothy W Behrens
Ox40 ligand (Ox40L) locus genetic variants are associated with the risk for systemic lupus erythematosus (SLE); however, it is unclear how Ox40L contributes to SLE pathogenesis. In this study, we evaluated the contribution of Ox40L and its cognate receptor, Ox40, using in vivo agonist and antagonist approaches in the NZB × NZW (NZB/W) F1 mouse model of SLE. Ox40 was highly expressed on several CD4 Th cell subsets in the spleen and kidney of diseased mice, and expression correlated with disease severity. Treatment of aged NZB/W F1 mice with agonist anti-Ox40 mAbs potently exacerbated renal disease, which was accompanied by activation of kidney-infiltrating T cells and cytokine production...
July 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
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