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Immunopharmacology and Immunotoxicology

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https://www.readbyqxmd.com/read/28555525/hepatoprotective-effect-of-parthenolide-in-rat-model-of-nonalcoholic-fatty-liver-disease
#1
Majid Bahabadi, Adel Mohammadalipour, Jamshid Karimi, Nasrin Sheikh, Ghasem Solghi, Farjam Goudarzi, Mohammad Hashemnia, Iraj Khodadadi
CONTEXT: The active ingredients of traditional medical herbs have been the focus of scientific interests. OBJECTIVE: This study was designed to explore the mechanisms of actions of parthenolide on nonalcoholic fatty liver disease (NAFLD). MATERIALS AND METHODS: Thirty-five male Wistar rats were fed high-fat diet (HFD) for eight weeks with or without an intraperitoneal injection of parthenolide to develop NAFLD. Liver triacylglycerol (TG), total antioxidant capacity (TAC), total oxidative status (TOS), thiobarbituric acid reactant substances (TBARs), total thiol groups and tumor necrosis factor alpha (TNF-α) and cytochrome P4502E1 (CYP2E1) levels as well as liver ALT, AST and catalase activities were determined...
May 30, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28555524/ellipticine-inhibits-the-proliferation-and-induces-apoptosis-in-rheumatoid-arthritis-fibroblast-like-synoviocytes-via-the-stat3-pathway
#2
Hui-Long Wen, Guang Yang, Qi-Rong Dong
OBJECTIVE: Ellipticine (5,11-dimethyl-6H-pyrido[4,3-b]carbazole) is an alkaloid isolated from Apocyanaceae plants. This study was designed to investigate the effects of ellipticine on the proliferation and apoptosis of fibroblast-like synoviocytes (FLSs) from patients with rheumatoid arthritis (RA). METHODS: RA-FLSs were exposed to different concentrations of ellipticine (i.e., 0.5, 1, 2, 4 and 8 μM) for 24-72h and measured for viability, proliferation and apoptosis...
May 30, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28555511/mitigation-of-inflammation-using-the-intravenous-anesthetic-dexmedetomidine-in-the-mouse-air-pouch-model
#3
Takefumi Inada, Chisato Sumi, Kiichi Hirota, Koh Shingu, Akihisa Okamoto, Yoshiyuki Matsuo, Takahiko Kamibayashi
Dexmedetomidine, an α2-adrenergic/imidazoline receptor agonist, is a widely used intravenous anesthetic. Its primary current usage is for sedation of patients in the intensive care unit. The mouse air pouch model is versatile in studying the anti-inflammatory effect of a drug on a local inflammation, which is induced by a variety of substances. In the present study, using the carrageenan-induced air pouch inflammation model, we tested whether dexmedetomidine mitigates inflammation occurring locally in the mouse air pouch...
May 30, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28555509/inhibitory-effects-of-propofol-on-th17-cell-differentiation
#4
Chi-Chien Lin, Der-Yuan Chen, Kuo-Tung Tang, Ya-Hsuan Chao, Ching-Hui Shen, Ping-Wing Lui
Propofol (2,6-diisopropylphenol) is probably the most widely used intravenous anesthetic agent in daily practice. It has been reported to show immunomodulatory activity. However, the effect of propofol on the differention of T cells remains unclear. In this study, we demonstrated for the first time that propofol inhibited both interleukin (IL)-6 plus transforming growth factor-β (TGF-β)-induced Th17 cell differentiation in vitro and in LPS-challenged mice. Propofol also suppressed the IL-6-induced phosphorylation of Janus kinase-2 (JAK2)/signal transducer and activator of transcription (STAT3) pathway, a cytokine-activated essential transcription factor in Th17 cell development, which occurred concomitantly with the enhancement of suppressor of cytokine signaling-3 (SOCS3) expression involved in the downregulation of STAT3 phosphorylation...
May 30, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28532201/vitamin-d-status-in-algerian-beh%C3%A3-et-s-disease-patients-an-immunomodulatory-effect-on-no-pathway
#5
Zineb Djeraba, Fatiha Benlabidi, Fatma Zohra Djaballah-Ider, Oussama Medjeber, Amina Arroul-Lammali, Houda Belguendouz, Fifi Otmani, Chafia Touil-Boukoffa
Behçet's disease (BD) is an inflammatory multisystemic disorder associated with orogenital ulcers, uveitis and skin lesions with unpredictable episodes of exacerbations and remissions. Even though several immunological and environmental factors contribute to BD progression, its ethiopathogenesis remains uncertain and elusive. Considered as one of the potent environmental factors that can increase prevalence of some autoimmune and inflammatory disorders, vitamin D deficiency has been linked to several diseases as BD...
May 22, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28523957/clinical-case-idelalisib-induced-immunoglobulin-flare
#6
Jan Novak, Martin Havrda, Lubica Gaherova, Jan Spicka, Tomas Kozak
IgM flare is a transient, treatment-induced, increase of monoclonal IgM levels in lymphoplasmacytic lymphoma/Waldenström macroglobulinemia (LPL/WM) patients. Until recently this phenomenon was observed in patients treated with Cladribine and Rituximab. Here we report a case of a heavily pretreated chronic lymphocytic leukemia patient with an atypically high immunoglobulin production who developed clinically significant immunoglobulin flare following Idelalisib treatment.
May 19, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28511573/inhibition-of-pkr-ameliorates-lipopolysaccharide-induced-acute-lung-injury-by-suppressing-nf-%C3%AE%C2%BAb-pathway-in-mice
#7
Yinjiao Li, Jinglei Xiao, Yongchang Tan, Jun Wang, Yan Zhang, Xiaoming Deng, Yan Luo
Acute lung injury (ALI) is characterized by dramatic lung inflammation and alveolar epithelial cell death. Although protein kinase R (PKR) (double-stranded RNA-activated serine/threonine kinase) has been implicated in inflammatory response to bacterial cell wall components, whether it plays roles in lipopolysaccharide (LPS)-induced ALI remains unclear. This study was aimed to reveal whether and how PKR was involved in LPS-induced ALI pathology and the potential effects of its specific inhibitor, C16 (C13H8N4OS)...
May 17, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28472907/ifn-%C3%AE-based-treatment-of-patients-with-chronic-hcv-show-increased-levels-of-cells-with-myeloid-derived-suppressor-cell-phenotype-and-of-ido-and-nos
#8
Mohamed Labib Salem, Abdel-Aziz A Zidan, Mohamed Attia, Randa E El-Naggar, Mohamed Nassef, Abdel Raouf Abou El-Azm, Hasan El-Bate, Mohamed Yussif, Sohaila Galal, Mohamed Abo Senna, Maha El Demellawy
INTRODUCTION: Hepatitis C virus (HCV) infection causes chronic hepatitis, which is often associated with suppressed anti-HCV immune responses. We have recently reported accumulation of myeloid-derived suppressor cells (MDSCs) and suppressed immunity in cancer patients. AIM: The main aim of this study was to determine whether chronic HCV patients harbor high of MDSCs in general and in nonresponders to IFN-based therapy in particular as well as to analyze the immune suppressive molecules...
May 4, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28472897/the-anticancer-effect-of-mebendazole-may-be-due-to-m1-monocyte-macrophage-activation-via-erk1-2-and-tlr8-dependent-inflammasome-activation
#9
Kristin Blom, Wojciech Senkowski, Malin Jarvius, Malin Berglund, Jenny Rubin, Lena Lenhammar, Vendela Parrow, Claes Andersson, Angelica Loskog, Mårten Fryknäs, Peter Nygren, Rolf Larsson
Mebendazole (MBZ), a drug commonly used for helminitic infections, has recently gained substantial attention as a repositioning candidate for cancer treatment. However, the mechanism of action behind its anticancer activity remains unclear. To address this problem, we took advantage of the curated MBZ-induced gene expression signatures in the LINCS Connectivity Map (CMap) database. The analysis revealed strong negative correlation with MEK/ERK1/2 inhibitors. Moreover, several of the most upregulated genes in response to MBZ exposure were related to monocyte/macrophage activation...
May 4, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28463035/inhibition-of-nf-%C3%AE%C2%BAb-tnf-%C3%AE-pathway-may-be-involved-in-the-protective-effect-of-resveratrol-against-cyclophosphamide-induced-multi-organ-toxicity
#10
Azza A El-Sheikh, Mohamed A Morsy, Ahmed M Okasha
CONTEXT: Cyclophosphamide (CyP), an efficient anticancer drug, may damage normal human cells. Resveratrol (RES), a natural polyphenol, has a diverse pharmacological properties. OBJECTIVE: To test possible protective effect of RES on multi-organ damage caused by CyP. MATERIALS AND METHODS: RES (10 mg/kg/day) was administered orally for 8 days. In independent rat groups, CyP toxicity was induced via a single dose of 150 mg/kg i.p. 3 days before the end of experiment, with or without RES treatment...
May 2, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28447503/1-6-o-o-diacetylbritannilactone-suppresses-activation-of-mast-cell-and-airway-hyper-responsiveness
#11
Meihua Jin, Sungun Kim, Nan Qin, Xi Chen, Ning Ji, Sheng-An Tang, Dexin Kong, Eunkyung Lee, Hongquan Duan
Mast cells play critical roles in allergic disorders such as atopic dermatitis and allergic asthma. The aim of this study was to investigate the anti-inflammatory and anti-asthmatic activities of 1,6-O,O-diacetylbritannilactone (OODBL) isolated from Inula japonica Thunb. (I. japonica) in a murine asthma model and bone marrow-derived mast cells (BMMCs). In an ovalbumin-induced asthma model, OODBL administration attenuated the airway hyper-responsiveness induced by aerosolized methacholine and serum IgE level in asthmatic mice...
April 27, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28378599/liposomal-microparticle-injection-can-induce-myeloid-derived-suppressor-cells-mdsc-like-cells-in-vivo
#12
Hiroshi Azuma, Yoichiro Yoshida, Hironori Takahashi, Emi Ishibazawa, Hiroya Kobayashi, Hiromi Sakai, Daisuke Takahashi, Mitsuhiro Fujihara
CONTEXT: Myeloid-derived suppressor cells (MDSCs) are a subset of immature myeloid cells that function as immunosuppressive cells in various pathological conditions. Membrane-derived microvesicles are thought to be involved in MDSC induction. Earlier reports have described that injection of considerable amount of liposome into rat can suppress Con A-induced splenic T-cell proliferation. Liposome-internalized cells expressing CD11b/c suppress T-cell proliferation. Nitric oxide (NO) appears to be involved in the suppression...
April 5, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28367652/astragaloside-iv-inhibits-pma-induced-epcr-shedding-through-mapks-and-pkc-pathway
#13
Yu Ma, Yi Zhao, Ran Zhang, Xiaoxia Liang, Zhongqiong Yin, Yi Geng, Gang Shu, Xu Song, Yuanfeng Zou, Lixia Li, Lizi Yin, Guizhou Yue, Yinglun Li, Gang Ye, Changliang He
Astragaloside IV (AS-IV), a main active substance isolated from Astragalus membranaceus Bunge, has been shown to have multiple pharmacological effects. Endothelial cell protein C receptor (EPCR) is a marker of inflammation, and is also a major member of protein C (PC) anti-coagulation system. EPCR can be cut off from the cell surface by tumor necrosis factor-α converting enzyme (TACE), which is controlled through mitogen-activated protein kinase (MAPK) and protein kinase C (PKC) pathways. To develop novel therapeutic drug for EPCR shedding, the effect of AS-IV was studied in phorbol-12-myristate 13-acetate (PMA)-induced human umbilical vein endothelial cells (HUVECs) and the potential molecular mechanism of AS-IV action was investigated...
April 3, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28418286/external-application-of-nf-%C3%AE%C2%BAb-inhibitor-dhmeq-suppresses-development-of-atopic-dermatitis-like-lesions-induced-with-dncb-ox-in-balb-c-mice
#14
Xiaoxue Jiang, Yi Lan, Bing Wei, Cailing Dai, Yaru Gu, Jun Ma, Xiaoyan Liu, Kazuo Umezawa, Yuyang Zhang
CONTEXT: Dehydroxymethylepoxyquinomicin (DHMEQ) which is originally developed as an analog of antibiotic epoxyquinomicin C is a specific and potent inhibitor of NF-κB and has been shown to possess promising potential as an anti-inflammatory and anti-tumor agent. OBJECTIVE: This study examines DHMEQ's effect on therapeutic potential for atopic dermatitis (AD)-like lesions. MATERIALS AND METHODS: AD lesions were chronically induced by the repetitive and alternative application of 2,4-dinitrochlorobenzene (DNCB) and oxazolone (OX) on ears in BALB/c mice...
June 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28211306/ex-vivo-all-trans-retinoic-acid-modulates-no-production-and-regulates-il-6-effect-during-rheumatoid-arthritis-a-study-in-algerian-patients
#15
Amina Arroul-Lammali, Fadia Rahal, Radia Chetouane, Zineb Djeraba, Oussama Medjeber, Aicha Ladjouze-Rezig, Chafia Touil-Boukoffa
Rheumatoid arthritis (RA) is a chronic autoimmune disease. The pathophysiology of RA implicates several mediators such as nitric oxide (NO) and cytokines such as interleukin-6 (IL-6), which is deeply involved in the main characteristics of RA. Furthermore, all-trans retinoic acid (ATRA) is an active vitamin A derivative well-known to have diverse immunomodulatory actions. In our study, we investigated first, the ex vivo immunomodulatory potential of ATRA on NO pathway by peripheral blood mononuclear cells (PBMCs) from Algerian RA patients...
April 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28211305/helicobacter-pylori-on-portal-hypertension-related-hepatic-encephalopathy
#16
LETTER
Jannis Kountouras, Stergios A Polyzos, Panagiotis Katsinelos, Dimitri Tzivras, Marina Boziki, Emmanuel Gavalas, Christos Zavos, Elizabeth Vardaka, Iordanis Romiopoulos, Sotiris Anastasiadis, Elena Tsiaousi, Constantinos Kountouras, Georgia Xiromerisiou, Georgia Deretzi
No abstract text is available yet for this article.
April 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28211304/granisetron-and-carvedilol-can-protect-experimental-rats-againstadjuvant-induced-arthritis
#17
Yasmin Moustafa Ahmed, Basim Anwar Shehata Messiha, Ali Ahmed Abo-Saif
CONTEXT: Rheumatoid arthritis (RA), a disabling autoimmune disorder of the joints as well as other organs, affects about 1% of population. Unfortunately, all current treatments of RA cause severe gastrointestinal, renal and other complications. OBJECTIVE: We aimed to evaluate the possible antiarthritic effects of a serotonin 5-HT3 receptor blocker, granisetron, and a nonselective adrenergic receptor blocker, carvedilol, on complete Freund's adjuvant-induced RA in adult female albino rats...
April 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28162057/pramipexole-reduces-inflammation-in-the-experimental-animal-models-of-inflammation
#18
Heibatollah Sadeghi, Mohammad Parishani, Mehdi Akbartabar Touri, Mehdi Ghavamzadeh, Mehrzad Jafari Barmak, Vahid Zarezade, Hamdollah Delaviz, Hossein Sadeghi
Pramipexole is a dopamine (DA) agonist (D2 subfamily receptors) that widely use in the treatment of Parkinson's diseases. Some epidemiological and genetic studies propose a role of inflammation in the pathophysiology of Parkinson's disease. To our knowledge, there is no study regarding the anti-inflammatory activity of pramipexol. Therefore, the aim of the study was to investigate anti-inflammatory effect of pramipexol. Anti-inflammatory effects of pramipexole were studied in three well-characterized animal models of inflammation, including carrageenan- or formalin-induced paw inflammation in rats, and 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced ear edema in mice...
April 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28152640/murine-raw-264-7-cell-line-as-an-immune-target-are-we-missing-something
#19
Liza Merly, Sylvia L Smith
The popular murine macrophage cell line, RAW 264.7, is often used to initially screen natural products for bioactivity and to predict their potential effect in vivo or on primary cells. The cell line response is considered to reflect the potential human de novo response, and is used to evaluate the effective bioactivity of the product. Here, we compared the cytokine response of RAW 264.7 cells to shark cartilage (SC) with that of human leukocytes to determine whether the cell line response was a reliable predictor of the cytokine response one can expect from similarly stimulated human primary cells...
April 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28152630/anti-inflammatory-effects-of-physalin-e-from-physalis-angulata-on-lipopolysaccharide-stimulated-raw-264-7-cells-through-inhibition-of-nf-%C3%AE%C2%BAb-pathway
#20
Yan-Jun Yang, Lang Yi, Qing Wang, Bing-Bing Xie, Yan Dong, Cong-Wei Sha
Physalin E is a naturally occurring seco-steroid isolated from the stems and aerial parts of Physalis angulata L. (Solanaceae). This study was aimed to explore the anti-inflammatory effects of physalin E on RAW 264.7 mouse macrophages stimulated by lipopolysaccharide (LPS) and the potential underlying mechanisms. The results showed that physalin E significantly inhibited LPS-induced tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) expression and secretion in a dose-dependent manner. Unlike dexamethasone, these effects could not be blocked by miferstone (RU486)...
April 2017: Immunopharmacology and Immunotoxicology
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