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https://www.readbyqxmd.com/read/28102910/arabidopsis-phosphoinositide-specific-phospholipase-c-4-negatively-regulates-seedling-salt-tolerance
#1
Keke Xia, Bo Wang, Jiewei Zhang, Yuan Li, Hailian Yang, Dongtao Ren
Previous physiological and pharmacological studies have suggested that the activity of phosphoinositide-specific phospholipase C (PI-PLC) plays an important role in regulating plant salt stress responses by altering the intracellular Ca(2+) concentration. However, the individual members of plant PLCs involved in this process need to be identified. Here, the function of AtPLC4 in the salt stress response of Arabidopsis seedlings was analyzed. plc4 mutant seedlings showed hyposensitivity to salt stress compared with Col-0 wild-type seedlings, and the salt hyposensitive phenotype could be complemented by the expression of native promoter-controlled AtPLC4...
January 19, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28102057/periostin-in-exhaled-breath-condensate-and-in-serum-of-asthmatic-patients-relationship-to-upper-and-lower-airway-disease
#2
Aleksandra Wardzyńska, Joanna S Makowska, Małgorzata Pawełczyk, Aleksandra Piechota-Polańczyk, Marcin Kurowski, Marek L Kowalski
PURPOSE: Periostin is considered a biomarker for eosinophilic airway inflammation and have been associated with NSAID-Exacerbated Respiratory Disease (NERD) and chronic rhinosinusitis (CRS). In this study, we aimed to evaluate periostin in exhaled breath condensate (EBC) and in serum of patients with various asthma phenotypes. METHODS: The study included 40 asthmatic patients (22 with NERD) and 17 healthy controls. All the procedures (questionnaire, spirometry, FeNO, nasal swabs, EBC collecting, and blood sampling) were performed on the same day...
March 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28102055/role-of-regulatory-cells-in-oral-tolerance
#3
REVIEW
Marcin Wawrzyniak, Liam O'Mahony, Mübeccel Akdis
The immune system is continuously exposed to great amounts of different antigens from both food and intestinal microbes. Immune tolerance to these antigens is very important for intestinal and systemic immune homeostasis. Oral tolerance is a specific type of peripheral tolerance induced by exposure to antigen via the oral route. Investigations on the role of intestinal immune system in preventing hypersensitivity reactions to innocuous dietary and microbial antigens have been intensively performed during the last 2 decades...
March 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28101031/alectinib-induced-erythema-multiforme-and-successful-rechallenge-with-alectinib-in-a-patient-with-anaplastic-lymphoma-kinase-rearranged-lung-cancer
#4
Tatsuo Kimura, Junko Sowa-Osako, Toshiyuki Nakai, Ayako Ohyama, Tomoya Kawaguchi, Daisuke Tsuruta, Masahiko Ohsawa, Kazuto Hirata
BACKGROUND: Alectinib is an oral drug developed for the treatment of patients with fusion gene encoding echinoderm microtubule-associated protein-like 4-anaplastic lymphoma kinase (EML4-ALK)-rearranged non-small cell lung cancer (NSCLC). Here, we present the case of a patient treated with alectinib who developed a hypersensitivity reaction with successful rechallenge treatment. CASE PRESENTATION: A 39-year-old woman who was a passive smoker was referred to Osaka City University Hospital for the evaluation of a skin event caused by treatment for NSCLC with the fusion gene EML4-ALK...
September 2016: Case Reports in Oncology
https://www.readbyqxmd.com/read/28100749/promoted-interaction-of-c-ebp%C3%AE-with-demethylated-cxcr3-gene-promoter-contributes-to-neuropathic-pain-in-mice
#5
Bao-Chun Jiang, Li-Na He, Xiao-Bo Wu, Hui Shi, Wen-Wen Zhang, Zhi-Jun Zhang, De-Li Cao, Chun-Hua Li, Jun Gu, Yong-Jing Gao
: DNA methylation has been implicated in the pathogenesis of chronic pain. However, the specific genes regulated by DNA methylation under neuropathic pain condition remain largely unknown. Here we investigated how chemokine receptor CXCR3 is regulated by DNA methylation and how it contributes to neuropathic pain induced by spinal nerve ligation (SNL) in mice. SNL increased Cxcr3 mRNA and protein expression in the neurons of the spinal cord. Meanwhile, the CpG (5'-cytosine-phosphate-guanine-3') island in the Cxcr3 gene promoter region was demethylated, and the expression of DNA methyltransferase 3b (DNMT3b) was decreased...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28100575/atrophic-pityriasis-versicolor-occurring-in-a-patient-with-sj%C3%A3-gren-s-syndrome
#6
Elena Marinello, Stefano Piaserico, Mauro Alaibac
Pityriasis versicolor is one of the most frequent epidermal mycotic infections in the world, but its atrophic variant is rarely described. The aetiology of the atrophy is still unknown, and two main hypotheses have been formulated, one suggesting a correlation with long-term use of topical steroids and the other a delayed type hypersensitivity to epicutaneous antigens derived from components of the fungus. Atrophic pityriasis versicolor is a benign disease, but needs to be distinguished from other more severe skin diseases manifesting with cutaneous atrophy...
January 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28100502/rack1-regulates-angiotensin-ii-induced-contractions-of-shr-preglomerular-vascular-smooth-muscle-cells
#7
Xiao Zhu, Edwin K Jackson
The preglomerular microcirculation of spontaneously hypertensive rats (SHR) is hypersensitive to angiotensin II, and studies show that this is likely due to enhanced convergent signaling between G-protein subunits αq (Gαq; released by angiotensin II) and G-protein subunits βγ (Gβγ; released by Gi-coupled receptors) to active phospholipase C (PLC). Here we investigated the molecular basis for the enhanced convergent signaling between Gβγ and Gαq in SHR preglomerular vascular smooth muscle cells (PGVSMCs)...
January 18, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28099849/cyclic-amp-recruits-a-discrete-intracellular-ca-2-store-by-unmasking-hypersensitive-ip3-receptors
#8
Vera Konieczny, Stephen C Tovey, Stefania Mataragka, David L Prole, Colin W Taylor
Inositol 1,4,5-trisphosphate (IP3) stimulates Ca(2+) release from the endoplasmic reticulum (ER), and the response is potentiated by 3',5'-cyclic AMP (cAMP). We investigated this interaction in HEK293 cells using carbachol and parathyroid hormone (PTH) to stimulate formation of IP3 and cAMP, respectively. PTH alone had no effect on the cytosolic Ca(2+) concentration, but it potentiated the Ca(2+) signals evoked by carbachol. Surprisingly, however, the intracellular Ca(2+) stores that respond to carbachol alone could be both emptied and refilled without affecting the subsequent response to PTH...
January 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/28097691/oilseed-rape-nac56-transcription-factor-modulates-reactive-oxygen-species-accumulation-and-hypersensitive-response-like-cell-death
#9
Qinqin Chen, Fangfang Niu, Jingli Yan, Bisi Chen, Feifei Wu, Xiaohua Guo, Bo Yang, Yuan-Qing Jiang
The NAC (NAM, ATAF1/2, CUC2) transcription factor gene family is plant-specific and plays diverse roles in development and responses to abiotic stresses and pathogen challenge. Oilseed rape (Brassica napus) or canola is an important oil crop worldwide, however, the function of NAC genes in it remains largely elusive. Here, we identified and characterized the NAC56 gene isolated from oilseed rape. Expression of BnaNAC56 was induced by abscisic acid (ABA), jasmonic acid (JA), methyl viologen (MV) and a necrotrophic fungal pathogen Sclerotinia sclerotiorum, but repressed by cold...
January 18, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28096613/immunotoxic-effect-of-thiamethoxam-in-immunized-mice-with-brucella-abortus-cultural-filtrate-antigen
#10
L H Salema, M J Alwan, Afaf Abdulrahman Yousif
AIM: This study was planned for determination the toxic effect of thiamethoxam (TMX) in immunized mice with Brucella abortus culture filtrate antigen (CFBAgs) (as a vaccine) and its role of TMX on decrease activity of B. abortus antigen on eliciting of humoral and cellular immunity. MATERIALS AND METHODS: To achieve these goals 60 female mice were used, 7-8 weeks age, they were divided equally into three groups (20 in each group) and treated as follows: 1(st) group: Mice were immunized with CFBAgs intraperitoneally in two doses, 2 weeks intervals with (protein concentration 2 mg\ml), 2(nd) group: Mice immunized as in the 1(st) group and was administrated orally with 1/10 lethal dose 50% of TMX (83...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28096358/repair-shielding-of-platinum-dna-lesions-in-testicular-germ-cell-tumors-by-high-mobility-group-box-protein-4-imparts-cisplatin-hypersensitivity
#11
Samuel G Awuah, Imogen A Riddell, Stephen J Lippard
Cisplatin is the most commonly used anticancer drug for the treatment of testicular germ cell tumors (TGCTs). The hypersensitivity of TGCTs to cisplatin is a subject of widespread interest. Here, we show that high-mobility group box protein 4 (HMGB4), a protein preferentially expressed in testes, uniquely blocks excision repair of cisplatin-DNA adducts, 1,2-intrastrand cross-links, to potentiate the sensitivity of TGCTs to cisplatin therapy. We used CRISPR/Cas9-mediated gene editing to knockout the HMGB4 gene in a testicular human embryonic carcinoma and examined cellular responses...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096305/epithelial-expression-and-function-of-trypsin-3-in-irritable-bowel-syndrome
#12
Claire Rolland-Fourcade, Alexandre Denadai-Souza, Carla Cirillo, Cintya Lopez, Josue Obed Jaramillo, Cleo Desormeaux, Nicolas Cenac, Jean-Paul Motta, Muriel Larauche, Yvette Taché, Pieter Vanden Berghe, Michel Neunlist, Emmanuel Coron, Sylvain Kirzin, Guillaume Portier, Delphine Bonnet, Laurent Alric, Stephen Vanner, Celine Deraison, Nathalie Vergnolle
OBJECTIVES: Proteases are key mediators of pain and altered enteric neuronal signalling, although the types and sources of these important intestinal mediators are unknown. We hypothesised that intestinal epithelium is a major source of trypsin-like activity in patients with IBS and this activity signals to primary afferent and enteric nerves and induces visceral hypersensitivity. DESIGN: Trypsin-like activity was determined in tissues from patients with IBS and in supernatants of Caco-2 cells stimulated or not...
January 17, 2017: Gut
https://www.readbyqxmd.com/read/28095394/loss-of-cul4a-expression-is-underlying-cisplatin-hypersensitivity-in-colorectal-carcinoma-cells-with-acquired-trabectedin-resistance
#13
B Englinger, M Mair, W Miklos, C Pirker, T Mohr, S van Schoonhoven, D Lötsch, W Körner, F Ferk, S Knasmüller, P Heffeter, B K Keppler, M Grusch, W Berger
BACKGROUND: Colorectal carcinoma (CRC) is the third most common cancer worldwide. Platinum-based anticancer compounds still constitute one mainstay of systemic CRC treatment despite limitations due to adverse effects and resistance development. Trabectedin has shown promising antitumor effects in CRC, however, again resistance development may occur. In this study, we aimed to develop strategies to circumvent or even exploit acquired trabectedin resistance in novel CRC treatment regimens...
January 17, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28095324/formalin-injection-produces-long-lasting-hypersensitivity-with-characteristics-of-neuropathic-pain
#14
Ana Belen Salinas-Abarca, Sabino Hazael Avila-Rojas, Paulino Barragán-Iglesias, Jorge Baruch Pineda-Farias, Vinicio Granados-Soto
The purpose of this study was to investigate whether 1%, 2% or 5% formalin injection produce hypersensitivity with characteristics of the neuropathic pain induced by spinal nerve injury. Formalin injection (1%, 2% and 5%) produced concentration-dependent long-lasting (at least 14 days) mechanical allodynia and hyperalgesia in both paws. Likewise, L5/L6 spinal nerve ligation induced allodynia and hyperalgesia in both paws. The intensity of hypersensitivity was greater in the ipsilateral than in the contralateral paw in all models...
January 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28094581/early-immunopathological-events-in-acute-model-of-mycobacterial-hypersensitivity-pneumonitis-in-mice
#15
Elisabet Johansson, Gregory P Boivin, Jagjit S Yadav
Prolonged exposure to antigens of non-tuberculous mycobacteria species colonizing industrial metalworking fluid (MWF), particularly Mycobacterium immunogenum (MI), has been implicated in chronic forms of hypersensitivity pneumonitis (HP) in machinists based on epidemiology studies and long-term exposure of mouse models. However, a role of short-term acute exposure to these antigens has not been described in the context of acute forms of HP. This study investigated short-term acute exposure of mice to MI cell lysate (or live cell suspension) via oropharyngeal aspiration...
January 17, 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/28094039/cisplatin-can-be-safely-administered-to-ovarian-cancer-patients-with-hypersensitivity-to-carboplatin
#16
A Bergamini, C Pisano, M Di Napoli, L Arenare, C Della Pepa, R Tambaro, G Facchini, P Gargiulo, S Rossetti, G Mangili, S Pignata, S C Cecere
OBJECTIVE: Hypersensitivity reactions (HSR) are frequently reported in patients rechallenged with carboplatin for recurrent ovarian cancer (ROC) and represent a critical issue, since discontinuation of the platinum-based therapy could affect prognosis. Several strategies to allow platinum rechallenge have been described, with controversial outcomes. The aim of this study is to illustrate a 10-year experience with cisplatin in patients with a previous HSR to carboplatin or at risk for allergy...
January 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28093332/chitin-and-chitinase-role-in-pathogenicity-allergenicity-and-health
#17
REVIEW
Seema Patel, Arun Goyal
Chitin, a polysaccharide with particular abundance in fungi, nematodes and arthropods is immunogenic. It acts as a threat to other organisms, to tackle which they have been endowed with chitinase enzyme. Even if this enzyme is not present in all organisms, they possess proteins having chitin-binding domain(s) (ChtBD). Many lethal viruses like Ebola, and HCV (HepatitisC virus) have these domains to manipulate their carriers and target organisms. In keeping with the basic rule of survival, the self-origin (own body component) chitins and chitinases are protective, but that of non-self origin (from other organisms) are detrimental to health...
January 13, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28093114/in-vitro-effects-of-the-toll-like-receptor-agonists-monophosphoryl-lipid-a-and-cpg-rich-oligonucleotides-on-cytokine-production-by-equine-cells
#18
A Ziegler, V Gerber, E Marti
Insect bite hypersensitivity (IBH) is an equine allergic dermatitis to Culicoides spp. antigens. Attempts at using allergen-specific immunotherapy (AIT) as a treatment for IBH have so far proven unsuccessful. Toll-like receptor (TLR) agonists can promote a shift in the immune response from the allergy-promoting T helper cell 2 (Th2) response towards a Th1 and/or regulatory response. The aim of this study was to evaluate two immunomodulatory TLR agonists in vitro as potential vaccine adjuvants for a more efficacious AIT in IBH...
January 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28092402/%C3%AE-%C3%AE-t-cells-are-indispensable-for-il-23-mediated-protection-against-cona-induced-hepatitis-in-hepatitis-b-virus-transgenic-mice
#19
Ziyu Meng, Jingya Wang, Yifang Yuan, Guangchao Cao, Shuobing Fan, Chao Gao, Li Wang, Zheng Li, Xiaoli Wu, Zhenzhou Wu, Liqing Zhao, Zhinan Yin
Hepatitis B virus surface antigen (HBsAg) carriers are highly susceptible to liver injury triggered by environmental biochemical stimulation. Previously, we have reported an inverse correlation between γδT cells and liver damage in patients with HBV. However, whether γδT cells play a role in regulating the hypersensitivity of HBsAg carriers to biochemical stimulation-induced hepatitis is unknown. In this study, using hepatitis B virus transgenic (HBs-Tg) and HBs-Tg-TCRδ(-/-) mice, we found that mice genetically deficient in γδT cells exhibited more severe liver damage upon ConcanavalinA (ConA) treatment, as indicated by substantially higher serum alanine aminotransferase (ALT) levels, further elevated IFN-γ levels and more extensive necrosis...
January 16, 2017: Immunology
https://www.readbyqxmd.com/read/28091877/influence-of-enamel-dentin-thickness-on-the-toxic-and-esthetic-effects-of-experimental-in-office-bleaching-protocols
#20
C C de Oliveira Duque, D G Soares, F G Basso, J Hebling, C A de Souza Costa
OBJECTIVES: This paper aims to assess the whitening effectiveness and toxicity of tooth-bleaching protocols applied to enamel/dentin disks simulating mandibular incisors (ICs) and premolars (PMs). MATERIALS AND METHODS: A 10% hydrogen peroxide (H2O2) gel was applied for 3 × 15, 1 × 15, or 1 × 5 min to enamel/dentin disks simulating mandibular ICs and PMs, and the trans-enamel and trans-dentinal diffusion products were applied to human dental pulp cells (1 h)...
January 14, 2017: Clinical Oral Investigations
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