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International Immunopharmacology

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https://www.readbyqxmd.com/read/28719851/interaction-of-cholera-toxin-b-subunit-with-t-and-b-lymphocytes
#1
Elena V Navolotskaya, Vladimir B Sadovnikov, Dmitry V Zinchenko, Valery M Lipkin, Vladimir P Zav'yalov
We have prepared (125)I-labeled cholera toxin B subunit ((125)I-labeled CT-B, a specific activity of 98Ci/mmol) and found that its binding to T and B lymphocytes from the blood of healthy donors was high-affinity (Kd 2.8 and 3.0nM, respectively). The binding of labeled protein was completely inhibited by unlabeled thymosin-α1 (TM-α1), interferon-α2 (IFN-α2), and the synthetic peptide LKEKK that corresponds to residues 16-20 in TM-α1 and 131-135 in IFN-α2, but was not inhibited by the synthetic peptide KKEKL with inverted amino acid sequence (Ki>10μM)...
July 15, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28711783/%C3%AE-patchoulene-from-patchouli-oil-protects-against-lps-induced-acute-lung-injury-via-suppressing-nf-%C3%AE%C2%BAb-and-activating-nrf2-pathways
#2
Xiao-Ying Chen, Yao-Xing Dou, Dan-Dan Luo, Zhen-Biao Zhang, Cai-Lan Li, Hui-Fang Zeng, Zi-Ren Su, Jian-Hui Xie, Xiao-Ping Lai, Yu-Cui Li
β-Patchoulene (β-PAE), a tricyclic sesquiterpene isolated from the essential oil of the leaves and stems of Pogostemon cablin (Blanco) Benth., has been reported to have potent anti-inflammatory activity. The aim of this study was to evaluate the potential protective effect of β-PAE on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice and to illuminate the underlying mechanisms. ALI was induced by intracheal instillation of LPS into lung, and dexamethasone (DEX) was used as a positive control...
July 12, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28711032/influence-of-the-number-and-interval-of-treatment-cycles-on-cytokine-induced-killer-cells-and-their-adjuvant-therapeutic-effects-in-advanced-non-small-cell-lung-cancer-nsclc
#3
Yuanlong Gu, Huimin Lv, Juan Zhao, Qi Li, Guannan Mu, Jiade Li, Jiazi Wuyang, Ge Lou, Ruitao Wang, Yanqiao Zhang, Xiaoyi Huang
OBJECTIVE: Cytokine-induced killer (CIK) cells have important therapeutic effects in adoptive cell transfer (ACT) for the treatment of various malignancies. In this study, we focused on in vitro expansion of CIK cells and their clinical efficacy in combination with chemotherapy in patients with advanced non-small-cell lung cancer (NSCLC). METHODS: A total of 64 patients with NSCLC (enrolled from 2011 to 2012), including 32 patients who received chemotherapy alone or with sequential radiotherapy (conventional treatment, control group) and 32 patients who received conventional treatment and sequential CIK infusion (study group), were retrospectively analyzed...
July 12, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28711031/the-sinomenine-enteric-coated-microspheres-suppressed-the-tlr-nf-%C3%AE%C2%BAb-signaling-in-dss-induced-experimental-colitis
#4
Huifang Xiong, Liang Tian, Zihan Zhao, Shuping Chen, Qiaoyun Zhao, Junbo Hong, Yong Xie, Nanjin Zhou, Yingjun Fu
Sinomenine is a pure alkaloid with immunosuppressive effects that is extracted from the Chinese medicinal plant Sinomenium acutum. We studied the therapeutic effects of sinomenine on inflammatory bowel disease. In this study, we randomly divided mice into the following ten groups: Control group; DSS-induced colitis group; Salicylazosulfapyridine (SASP)-treated group; Chitosan-treated group; low-, medium-, and high-dose sinomenine-treated and sinomenine enteric-coated microspheres-treated groups. We recorded changes in colon length, disease activity index (DAI), and colon pathology, measured TLR4, MyD88, SIGIRR, NF-κB p65 protein levels and inflammatory serum cytokine levels...
July 12, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28711030/carvedilol-can-attenuate-histamine-induced-paw-edema-and-formaldehyde-induced-arthritis-in-rats-without-risk-of-gastric-irritation
#5
Faf Sayed Osman, Dina Ahmed Labib, Mahmoud M Kamel
BACKGROUND AND AIM: Rheumatoid arthritis treatment aims to control joint damage and any associated complications such as cardiovascular disease. Most anti-inflammatory drugs have a high tendency to cause gastro-intestinal irritation. The present study is designed to investigate the anti-inflammatory effect of carvedilol and to study its effect on gastric mucosa. EXPERIMENTAL APPROACH: Lornoxicam (1.3mg/kg) or carvedilol (10mg/kg) was administrated orally 1h before histamine injection into animals of a histamine-induced paw edema model and orally daily for 11days into animals of a formaldehyde-induced arthritis model...
July 12, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28704798/experimental-studies-on-possible-regulatory-role-of-nitric-oxide-on-the-differential-effects-of-chronic-predictable-and-unpredictable-stress-on-adaptive-immune-responses
#6
Tarun Thakur, Kavita Gulati, Nishant Rai, Arunabha Ray
The present study was designed to investigate the effects of chronic predictable stress (CPS) and chronic unpredictable stress (CUS) on immunological responses in KLH-sensitized rats and involvement of NOergic signaling pathways mediating such responses. Male Wistar rats (200-250g) were exposed to either CPS or CUS for 14days and IgG antibody levels and delayed type hypersensitivity (DTH) response was determined to assess changes in adaptive immunity. To evaluate the role of nitric oxide during such immunomodulation, biochemical estimation of stable metabolite of nitric oxide (NOx) and 3-nitrotyrosine (3-NT, a marker of peroxynitrite formation) were done in both blood and brain...
July 10, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28704797/knockout-of-rage-ameliorates-mainstream-cigarette-smoke-induced-airway-inflammation-in-mice
#7
Mei Chen, Tao Wang, Yongchun Shen, Dan Xu, Xiaoou Li, Jing An, Jiajia Dong, Diandian Li, Fuqiang Wen, Lei Chen
BACKGROUND: The receptor for advanced glycation end products (RAGE), a multiligand receptor, has been proved to be implicated in inflammatory responses in chronic obstructive pulmonary disease (COPD). In this study, we investigated the role of RAGE in cigarette smoke (CS)-induced airway inflammation in COPD. METHODS: Wild-type (WT) and RAGE gene knockout (KO) mice were exposed to mainstream CS or room air for 2h twice daily, 6days per week for consecutive 4weeks...
July 10, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28692879/anti-inflammatory-effects-of-pitavastatin-in-interleukin-1%C3%AE-induced-sw982-human-synovial-cells
#8
Bin-Feng Cheng, Yao-Xin Gao, Jun-Jiang Lian, Dan-Dan Guo, Tong-Tong Liu, Yun-Fei Xie, Lei Wang, Hai-Jie Yang, Mian Wang, Zhi-Wei Feng
The present study shows the basis for the anti-inflammatory effects of pitavastatin in interleukin (IL)-1β-induced human synovial cells. The SW982 cells were pretreated with pitavastatin at different concentrations (5μM and 10μM), followed by IL-1β (10ng/mL) stimulation. The results showed that pitavastatin inhibited the expression of inflammatory mediators IL-6 and IL-8. Furthermore, pitavastatin inhibited the phosphorylation of p38, extracellular signal-related kinase (ERK), c-jun N-terminal kinase (JNK) and protein kinase B (Akt)...
July 7, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28683366/pentanoic-acid-induces-thymic-stromal-lymphopoietin-production-through-gq-11-and-rho-associated-protein-kinase-signaling-pathway-in-keratinocytes
#9
Natsumi Mizuno, Koudai Abe, Yukari Morishita, Saori Yamashita, Ryosuke Segawa, Jiangxu Dong, Takahiro Moriya, Masahiro Hiratsuka, Noriyasu Hirasawa
Thymic stromal lymphopoietin (TSLP) plays an important role in allergic skin inflammation. Short-chain fatty acids (SCFAs), including pentanoic acid, are products of bacterial metabolism and are associated with allergic skin disorders. However, whether SCFAs induce TSLP production is still unclear. In this study, we evaluated the effect of SCFAs on TSLP production and found that pentanoic acid was the most efficacious of the tested SCFAs. The Gq/11 inhibitor YM-254890 and the Rho-associated protein kinase (ROCK) inhibitor Y-27632 inhibited pentanoic acid-induced TSLP production, as did transfection with Gq/11 siRNA...
July 3, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28683365/resveratrol-alleviates-cerebral-ischemia-reperfusion-injury-in-rats-by-inhibiting-nlrp3-inflammasome-activation-through-sirt1-dependent-autophagy-induction
#10
Qi He, Zhenyu Li, Yueting Wang, Yanghao Hou, Lingyu Li, Jing Zhao
Resveratrol has been reported to protect against cerebral ischemia/reperfusion (I/R) injury in rats, but the underlying mechanism is unclear. In the current study, we examined whether resveratrol ameliorates cerebral I/R injury by inhibiting NLRP3 inflammasome-derived inflammation and whether autophagy is involved in this process. In addition, we explored the role of Sirt1 in resveratrol-mediated protective effects. To answer these questions, healthy male Sprague-Dawley rats were exposed to middle cerebral artery occlusion for 1h followed by 24h reperfusion...
July 3, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28675838/therapeutic-application-of-human-leukocyte-antigen-g1-improves-atopic-dermatitis-like-skin-lesions-in-mice
#11
Naoyoshi Maeda, Chisato Yamada, Ami Takahashi, Kimiko Kuroki, Katsumi Maenaka
Human leukocyte antigen (HLA)-G is an immune checkpoint molecule that plays critical roles in immune response and in triggering inhibitory signaling to immune cells such as T cells, natural killer cells, and antigen-presenting cells. Thus, the application of HLA-G can be considered for treating immune response-related inflammatory disorders. We have previously reported that treatment with HLA-G1 and HLA-G2 ameliorates the joint swelling associated with collagen-induced arthritis of DBA/1 mice, an animal model for rheumatoid arthritis...
July 1, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28672215/silymarin-impacts-on-immune-system-as-an-immunomodulator-one-key-for-many-locks
#12
REVIEW
Nafiseh Esmaeil, Sima Balouchi Anaraki, Marjan Gharagozloo, Behjat Moayedi
Silymarin is a flavonoid complex extracted from the Silybum marianum plant. It acts as a strong antioxidant and free radical scavenger by different mechanisms. But in addition to antioxidant effects, silymarin/silybin reveals immunomodulatory affects with both immunostimulatory and immunosuppression activities. Different studies have shown that silymarin has the anti-inflammatory effect through the suppression of NF-κB signaling pathway and TNF-α activation. It also has different immunomodulatory activities in a dose and time-dependent manner...
June 30, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28668488/glycyrrhetinic-acid-prevents-acetaminophen-induced-acute-liver-injury-via-the-inhibition-of-cyp2e1-expression-and-hmgb1-tlr4-signal-activation-in-mice
#13
Genling Yang, Li Zhang, Li Ma, Rong Jiang, Ge Kuang, Ke Li, Hongtao Tie, Bin Wang, Xinyu Chen, Tianjun Xie, Xia Gong, Jingyuan Wan
Acetaminophen (APAP) is a widely used antipyretic and analgesic drug, which is safe and effective at the therapeutic dose. Unfortunately, excessive dosage of APAP could cause severe liver injury due to lack of effective therapy. Successful therapeutic strategies are urgently requested in clinic. Glycyrrhetinic acid (GA), derived from a traditional medicine licorice, has been shown to exert anti-inflammatory and antioxidant actions. In this study, the effect and the underlying mechanism of GA on APAP-induced hepatotoxicity were explored...
June 29, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28667886/direct-effects-of-interleukin-8-on-growth-and-functional-activity-of-t-lymphocytes
#14
Maksim Evgenievich Meniailo, Vladimir Vladimirovich Malashchenko, Viacheslav Anatolievich Shmarov, Natalia Dinislamovna Gazatova, Olga Borisovna Melashchenko, Andrei Gennadievich Goncharov, Galina Victorovna Seledtsova, Victor Ivanovich Seledtsov
CD3(+) T-lymphocytes were isolated from the normal donors by positive magnetic separation. Activation of the T cells with particles conjugated with antibodies to CD3, СD28 and СD2 molecules led to a marked increase in T-cell production of interleukine-8 (IL-8). We present evidence that IL-8 receptor α-chain (CXCR1, CD181) is expressed on the cell surface of 13.3% T cells. Activation of T-lymphocytes resulted in significant enhancement of CD181(+) cells both in naive CD4(+) T cell and terminally differentiated effector CD4(+) T cell compartments with concomitant reduction of CD181(+) cells in effector memory CD4(+) T cell subset...
June 28, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28667885/activation-of-murine-macrophages-by-g1-4a-a-polysaccharide-from-tinospora-cordifolia-in-tlr4-myd88-dependent-manner
#15
Pramod Kumar Gupta, M G R Rajan, Savita Kulkarni
Macrophages are centrally placed in the innate immune system and their activation is crucial to the generation of appropriate immune response in the event of any pathogenic invasion, tumorigenesis or other human diseases. Many plant derived polysaccharides are known to activate macrophages. In the present study, effects of G1-4A, a polysaccharide derived from Tinospora cordifolia, on the activation of macrophages were investigated. Our data demonstrated the up regulation of expression of TNF-α, IL-β, IL-6, IL-12, IL-10 and IFN-γ in RAW 264...
June 28, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28666239/cryptotanshinone-protects-against-il-1%C3%AE-induced-inflammation-in-human-osteoarthritis-chondrocytes-and-ameliorates-the-progression-of-osteoarthritis-in-mice
#16
Zhenhua Feng, Wenhao Zheng, Xiaobin Li, Jian Lin, Chenglong Xie, Hang Li, Liang Cheng, Aimin Wu, Wenfei Ni
Osteoarthritis (OA) is a common degenerative disease characterized by progressive erosion of articular cartilage, subchondral bone sclerosis and synovitis. Cryptotanshinone (CTS), an active component extracted from the root of Salvia miltiorrhiza Bunge, has been shown to have potent anti-inflammatory effects. However, its effects on OA have not been clearly elucidated. This study aimed to assess the effect of CTS on human OA chondrocytes and mice OA models. Human OA chondrocytes were pretreated with CTS (5, 10 and 20μM) for 2h and subsequently stimulated with IL-1β for 24h...
June 27, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28666238/protective-effects-of-paeoniflorin-on-tnbs-induced-ulcerative-colitis-through-inhibiting-nf-kappab-pathway-and-apoptosis-in-mice
#17
Peiqing Gu, Lei Zhu, Yajun Liu, Lu Zhang, Junlou Liu, Hong Shen
Paeoniflorin is traditionally used to treat inflammatory disorders. In our laboratory, we have scientifically validated the anti-inflammatory effect of paeoniflorin. In this study, it has been aimed to evaluate in vivo anti-inflammatory effect of paeoniflorin isolated from the dried peeled root of Paeonia lactiflora Pall. It was further intended to find out the probable mechanism of anti-inflammatory effect of paeoniflorin. The anti-inflammatory effect of paeoniflorin (15, 30 and 45mg/kg) was measured employing TNBS-induced ulcerative colitis model of acute inflammation...
June 27, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28662433/cxcr5-cd8-t-cells-present-elevated-capacity-in-mediating-cytotoxicity-toward-autologous-tumor-cells-through-interleukin-10-in-diffuse-large-b-cell-lymphoma
#18
Jiahong Tang, Jie Zha, Xutao Guo, Pengcheng Shi, Bing Xu
Diffuse large B-cell lymphoma (DLBCL) is a common and aggressive subtype of non-Hodgkin's lymphomas, with limited treatment options in refractory and relapsed patients. Growing evidence supports the notion that CD8(+) T cell immunity could be utilized to eliminate B cell lymphomas. CXCR5(+)CD8(+) T cell is a novel cell subtype and share CXCR5 expression with CD19(+) tumor cells. In this study, we investigated the frequency and function of existing CXCR5(+)CD8(+) T cells in DLBCL patients. We found that DLBCL patients as a group demonstrated significantly higher level of CXCR5(+)CD8(+) T cells than healthy individuals, with huge variability in each patient...
June 26, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28662432/cathelicidin-augments-vdr-dependent-anti-leishmanial-immune-response-in-indian-post-kala-azar-dermal-leishmaniasis
#19
Sushmita Das, Abul Hasan Sardar, Kumar Abhishek, Ajay Kumar, Vidya Nand Rabidas, Pradeep Das
OBJECTIVES: Indian Post kala-azar dermal leishmaniasis (PKDL) is the cutaneous aftermath of visceral leishmaniasis (VL) caused by L. donovani. Vitamin D-regulated cationic antimicrobial peptide cathelicidin (hCAP-18/LL-37) has microbicidal and immunomodulatory role against cutaneous infections, but its role in PKDL remains elusive. METHODS: Skin snips and blood-derived monocytes of PKDL patients (n=46), before (BT) and after (AT) chemotherapy, were used for this study...
June 26, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28654841/exposure-to-particulate-matter-2-5-pm2-5-induced-macrophage-dependent-inflammation-characterized-by-increased-th1-th17-cytokine-secretion-and-cytotoxicity
#20
Qin-Yun Ma, Da-Yu Huang, Hui-Jun Zhang, Shaohua Wang, Xiao-Feng Chen
Particulate matter PM2.5 is a class of airborne particles and droplets with sustained high levels in many developing countries. Epidemiological studies have shown the association between sustained high level of PM2.5 and the risk of many diseases in the respiratory system, including lung cancer. However, the precise mechanisms through which PM2.5 induces respiratory diseases are still unclear. In this study, we demonstrated that CD4(+) and CD8(+) T cells following PM2.5 treatment demonstrated significantly elevated mRNA and protein levels of interferon (IFN)-γ, interleukin (IL)-10, IL-17, and IL-21 production...
June 24, 2017: International Immunopharmacology
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